fixed building

* Fixed WebHost NRE on adding

.gitignore

@@ -361,5 +361,5 @@ MigrationBackup/
 
 # Fody - auto-generated XML schema
 FodyWeavers.xsd
-/GETTING_STARTED.md
-/ANNOTATION_OVERVIEW.md
+
+.aider*

LICENSE

@@ -1,674 +1,7 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
+Copyright (c) 2026 RikitavTimur
 
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
-                            Preamble
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-  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-
-  16. Limitation of Liability.
-
-  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGES.
-
-  17. Interpretation of Sections 15 and 16.
-
-  If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-state the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper mail.
-
-  If the program does terminal interaction, make it output a short
-notice like this when it starts in an interactive mode:
-
-    <program>  Copyright (C) <year>  <name of author>
-    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, your program's commands
-might be different; for a GUI interface, you would use an "about box".
-
-  You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU GPL, see
-<https://www.gnu.org/licenses/>.
-
-  The GNU General Public License does not permit incorporating your program
-into proprietary programs.  If your program is a subroutine library, you
-may consider it more useful to permit linking proprietary applications with
-the library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.  But first, please read
-<https://www.gnu.org/licenses/why-not-lgpl.html>.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -1,14 +1,14 @@
-# Telegrator
-
 ![Telegrator Banner](https://github.com/Rikitav/Telegrator/blob/master/resources%2FTelegrator_banner.png)
 
-> **A modern reactive framework for Telegram bots in C# with aspect-oriented design, mediator-based dispatching, and flexible architecture.**
-
 ---
 
 ## 🚀 About Telegrator
 
-Telegrator is a next-generation framework for building Telegram bots in C#, inspired by AOP (Aspect-Oriented Programming) and the mediator pattern. It enables decentralized, easily extensible, and maintainable bot logic without traditional state machines or monolithic handlers.
+Telegrator is a modern C# framework for building Telegram bots, inspired by AOP (Aspect-Oriented Programming) and the mediator pattern. It enables decentralized, easily extensible, and maintainable bot logic without traditional state machines or monolithic handlers.
+
+---
+
+The documentation may not be completely transparent, informative or even actual to latest version, so if you have any questions or problems, please write them in the [Telegram.Bot](https://t.me/joinchat/B35YY0QbLfd034CFnvCtCA) group. I am a member of this group and will notice you! If you have any suggestions or want to participate in building documentation, make push requests and open issues on this repository!
 
 ---
 
@@ -55,7 +55,7 @@ using Telegrator.Annotations;
 [MessageHandler]
 public class HelloHandler : MessageHandler
 {
-    public override async Task<Result> Execute(IAbstractHandlerContainer<Message> container, CancellationToken cancellation)
+    public override async Task<Result> Execute(IHandlerContainer<Message> container, CancellationToken cancellation)
     {
         await Reply("Hello, world!", cancellationToken: cancellation);
         return Result.Ok();
@@ -75,10 +75,10 @@ using Telegram.Bot.Types.Enums;
 using Telegrator.Handlers;
 using Telegrator.Annotations;
 
-[CommandHandler, CommandAllias("start", "hello"), ChatType(ChatType.Private)]
+[CommandHandler, CommandAlias("start", "hello"), ChatType(ChatType.Private)]
 public class StartCommandHandler : CommandHandler
 {
-    public override async Task<Result> Execute(IAbstractHandlerContainer<Message> container, CancellationToken cancellation)
+    public override async Task<Result> Execute(IHandlerContainer<Message> container, CancellationToken cancellation)
     {
         await Responce("Welcome!", cancellationToken: cancellation);
         return Result.Ok();
@@ -95,13 +95,12 @@ bot.Handlers.AddHandler<StartCommandHandler>();
 using Telegrator.Handlers;
 using Telegrator.Annotations;
 
-[CommandHandler, CommandAllias("first"), NumericState(SpecialState.NoState)]
+[CommandHandler, CommandAlias("first"), State<SetupWizard>(null)]
 public class StateKeepFirst : CommandHandler
 {
-    public override async Task<Result> Execute(IAbstractHandlerContainer<Message> container, CancellationToken cancellation)
+    public override async Task<Result> Execute(IHandlerContainer<Message> container, CancellationToken cancellation)
     {
-        container.CreateNumericState();
-        container.ForwardNumericState();
+        StateStorage.GetStateMachine<SetupWizard>().BysenderId().Advance();
         await Reply("first state moved (1)", cancellationToken: cancellation);
         return Result.Ok();
     }
@@ -126,7 +125,7 @@ bot.Handlers.AddHandler<StateKeepFirst>();
 ## 📚 Documentation & Examples
 
 - [Documentation](https://github.com/Rikitav/Telegrator/wiki/)
-- [Usage examples (WIP)](https://github.com/Rikitav/Telegrator/tree/master/Examples)
+- [Usage examples (WIP)](https://github.com/Rikitav/Telegrator/tree/master/examples)
 
 ---
 

Telegrator.slnx

@@ -1,5 +1,6 @@
 <Solution>
   <Project Path="dev/Telegrator.RoslynGenerators/Telegrator.RoslynGenerators.csproj" />
+  <Project Path="src/Telegartor.RedisStateStorage/Telegartor.RedisStateStorage.csproj" />
   <Project Path="src/Telegrator.Analyzers/Telegrator.Analyzers.csproj" />
   <Project Path="src/Telegrator.Hosting.Web/Telegrator.Hosting.Web.csproj" />
   <Project Path="src/Telegrator.Hosting/Telegrator.Hosting.csproj" />

dev/Telegrator.RoslynGenerators/ImplicitHandlerBuilderExtensionsGenerator.cs

@@ -5,10 +5,6 @@ using System.Collections.Immutable;
 using System.Text;
 using Telegrator.RoslynGenerators.RoslynExtensions;
 
-#if DEBUG
-using System.Diagnostics;
-#endif
-
 namespace Telegrator.RoslynGenerators;
 
 [Generator(LanguageNames.CSharp)]
@@ -72,6 +68,9 @@ public class ImplicitHandlerBuilderExtensionsGenerator : IIncrementalGenerator
                 if (className == "FilterAnnotation")
                     continue;
 
+                if (className == "StateAttribute")
+                    continue;
+
                 MethodDeclarationSyntax? targeter = classDeclaration.Members.OfType<MethodDeclarationSyntax>().SingleOrDefault(IsTargeterMethod);
                 if (targeter != null)
                 {
@@ -101,7 +100,13 @@ public class ImplicitHandlerBuilderExtensionsGenerator : IIncrementalGenerator
                 continue;
 
             usings.UnionAdd(classDeclaration.FindAncestor<CompilationUnitSyntax>().Usings, UsingEqualityComparer);
-            MethodDeclarationSyntax targeter = FindTargetterMethod(targetters, classDeclaration);
+            MethodDeclarationSyntax? targeter = FindTargetterMethod(targetters, classDeclaration);
+
+            if (targeter == null)
+            {
+                debugExport.AppendLine("Targetter not found");
+                continue;
+            }
 
             if (classDeclaration.ParameterList != null && classDeclaration.BaseList != null)
             {
@@ -140,16 +145,16 @@ public class ImplicitHandlerBuilderExtensionsGenerator : IIncrementalGenerator
         {
             ClassDeclarationSyntax extensionsClass = SyntaxFactory.ClassDeclaration("HandlerBuilderExtensions")
                 .WithModifiers(Modifiers(SyntaxKind.PublicKeyword, SyntaxKind.StaticKeyword, SyntaxKind.PartialKeyword))
-                .AddMembers([.. targetters.Values, .. extensions])
-                .DecorateType(1);
+                .AddMembers([.. targetters.Values, .. extensions]);
 
             NamespaceDeclarationSyntax namespaceDeclaration = SyntaxFactory.NamespaceDeclaration(SyntaxFactory.ParseName("Telegrator"))
-                .WithMembers([extensionsClass])
-                .Decorate();
+                .WithLeadingTrivia(SyntaxFactory.ParseLeadingTrivia("#pragma warning disable CS1591"))
+                .WithMembers([extensionsClass]);
 
             CompilationUnitSyntax compilationUnit = SyntaxFactory.CompilationUnit()
                 .WithUsings([.. usings])
-                .WithMembers([namespaceDeclaration]);
+                .WithMembers([namespaceDeclaration])
+                .NormalizeWhitespace();
 
             context.AddSource("GeneratedHandlerBuilderExtensions.cs", compilationUnit.ToFullString());
         }
@@ -175,7 +180,7 @@ public class ImplicitHandlerBuilderExtensionsGenerator : IIncrementalGenerator
         if (targetterMethod.ExpressionBody != null)
             method = method.WithExpressionBody(targetterMethod.ExpressionBody).WithSemicolonToken(SyntaxFactory.Token(SyntaxKind.SemicolonToken));
 
-        return method.DecorateMember(2);
+        return method;
     }
 
     private static MethodDeclarationSyntax GeneratedExtensionsMethod(ClassDeclarationSyntax classDeclaration, ParameterListSyntax methodParameters, ArgumentListSyntax invokerArguments, MethodDeclarationSyntax targetterMethod)
@@ -204,11 +209,10 @@ public class ImplicitHandlerBuilderExtensionsGenerator : IIncrementalGenerator
 
         MethodDeclarationSyntax method = SyntaxFactory.MethodDeclaration(returnType, identifier)
             .WithParameterList(parameters)
-            .WithBody(body.DecorateBlock(2))
+            .WithBody(body)
             .WithTypeParameterList(typeParameters)
             .WithModifiers(Modifiers(SyntaxKind.PublicKeyword, SyntaxKind.StaticKeyword))
             .WithConstraintClauses([typeParameterConstraint])
-            .DecorateMember(2)
             .WithLeadingTrivia(xmlDoc);
          
         return method;
@@ -230,7 +234,7 @@ public class ImplicitHandlerBuilderExtensionsGenerator : IIncrementalGenerator
     private static IEnumerable<ConstructorDeclarationSyntax> GetConstructors(ClassDeclarationSyntax classDeclaration)
         => classDeclaration.Members.OfType<ConstructorDeclarationSyntax>().Where(ctor => ctor.Modifiers.HasModifiers("public"));
 
-    private static MethodDeclarationSyntax FindTargetterMethod(Dictionary<string, MethodDeclarationSyntax> targeters, ClassDeclarationSyntax classDeclaration)
+    private static MethodDeclarationSyntax? FindTargetterMethod(Dictionary<string, MethodDeclarationSyntax> targeters, ClassDeclarationSyntax classDeclaration)
     {
         if (targeters.TryGetValue(classDeclaration.Identifier.ValueText, out MethodDeclarationSyntax targeter))
             return targeter;
@@ -238,7 +242,7 @@ public class ImplicitHandlerBuilderExtensionsGenerator : IIncrementalGenerator
         if (classDeclaration.BaseList != null && targeters.TryGetValue(classDeclaration.BaseList.Types.ElementAt(0).Type.ToString(), out targeter))
             return targeter;
 
-        throw new TargteterNotFoundException();
+        return null;
     }
 
     private static SyntaxTriviaList BuildExtensionXmlDocTrivia(ClassDeclarationSyntax classDeclaration, ParameterListSyntax methodParameters)

dev/Telegrator.RoslynGenerators/RoslynExtensions/MemberDeclarationSyntaxExtensions.cs

@@ -1,38 +0,0 @@
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.CSharp;
-using Microsoft.CodeAnalysis.CSharp.Syntax;
-
-namespace Telegrator.RoslynGenerators.RoslynExtensions
-{
-    public static class MemberDeclarationSyntaxExtensions
-    {
-        private static SyntaxTrivia TabulationTrivia => SyntaxFactory.SyntaxTrivia(SyntaxKind.WhitespaceTrivia, "\t");
-        private static SyntaxTrivia WhitespaceTrivia => SyntaxFactory.SyntaxTrivia(SyntaxKind.WhitespaceTrivia, " ");
-        private static SyntaxTrivia NewLineTrivia => SyntaxFactory.SyntaxTrivia(SyntaxKind.EndOfLineTrivia, "\n");
-
-        public static SyntaxTokenList Decorate(this SyntaxTokenList tokens)
-            => new SyntaxTokenList(tokens.Select(token => token.WithoutTrivia().WithTrailingTrivia(WhitespaceTrivia)).ToArray());
-
-        public static BlockSyntax DecorateBlock(this BlockSyntax block, int times) => block
-            .WithStatements([.. block.Statements.Select(statement => statement.DecorateStatememnt(times + 1))])
-            .WithOpenBraceToken(SyntaxFactory.Token(SyntaxKind.OpenBraceToken).WithLeadingTrivia(WhitespaceTrivia).WithTrailingTrivia(NewLineTrivia))
-            .WithCloseBraceToken(SyntaxFactory.Token(SyntaxKind.CloseBraceToken).WithLeadingTrivia(TabulationTrivia.Repeat(times)).WithTrailingTrivia(NewLineTrivia));
-
-        public static T DecorateStatememnt<T>(this T statememnt, int times) where T : StatementSyntax => statememnt
-            .WithoutTrivia().WithLeadingTrivia(TabulationTrivia.Repeat(times)).WithTrailingTrivia(NewLineTrivia);
-
-        public static T DecorateMember<T>(this T typeDeclaration, int times) where T : MemberDeclarationSyntax => typeDeclaration
-            .WithoutTrivia().WithLeadingTrivia(TabulationTrivia.Repeat(times)).WithTrailingTrivia(NewLineTrivia);
-
-        public static NamespaceDeclarationSyntax Decorate(this NamespaceDeclarationSyntax namespaceDeclaration) => namespaceDeclaration
-            .WithName(namespaceDeclaration.Name.WithoutTrivia().WithLeadingTrivia(WhitespaceTrivia))
-            .WithOpenBraceToken(SyntaxFactory.Token(SyntaxKind.OpenBraceToken).WithLeadingTrivia(NewLineTrivia).WithTrailingTrivia(NewLineTrivia))
-            .WithCloseBraceToken(SyntaxFactory.Token(SyntaxKind.CloseBraceToken));
-
-        public static T DecorateType<T>(this T typeDeclaration, int times = 1) where T : TypeDeclarationSyntax => (T)typeDeclaration
-            .WithoutTrivia().WithLeadingTrivia(TabulationTrivia.Repeat(times))
-            .WithIdentifier(typeDeclaration.Identifier.WithoutTrivia().WithLeadingTrivia(WhitespaceTrivia).WithTrailingTrivia(NewLineTrivia))
-            .WithOpenBraceToken(SyntaxFactory.Token(SyntaxKind.OpenBraceToken).WithLeadingTrivia(TabulationTrivia.Repeat(times)).WithTrailingTrivia(NewLineTrivia))
-            .WithCloseBraceToken(SyntaxFactory.Token(SyntaxKind.CloseBraceToken).WithLeadingTrivia(TabulationTrivia.Repeat(times)).WithTrailingTrivia(NewLineTrivia));
-    }
-}

docs/Telegartor.RedisStateStorage.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0"?>
+<doc>
+    <assembly>
+        <name>Telegartor.RedisStateStorage</name>
+    </assembly>
+    <members>
+        <member name="T:Telegrator.States.RedisStateStorage">
+            <summary>
+            Provides a Redis-based implementation of the <see cref="T:Telegrator.Core.States.IStateStorage"/> interface.
+            Serializes state objects to JSON format before storing them in the Redis database.
+            </summary>
+        </member>
+        <member name="M:Telegrator.States.RedisStateStorage.#ctor(StackExchange.Redis.IConnectionMultiplexer)">
+            <summary>
+            Provides a Redis-based implementation of the <see cref="T:Telegrator.Core.States.IStateStorage"/> interface.
+            Serializes state objects to JSON format before storing them in the Redis database.
+            </summary>
+        </member>
+        <member name="M:Telegrator.States.RedisStateStorage.SetAsync``1(System.String,``0,System.Threading.CancellationToken)">
+            <inheritdoc/>
+        </member>
+        <member name="M:Telegrator.States.RedisStateStorage.GetAsync``1(System.String,System.Threading.CancellationToken)">
+            <inheritdoc/>
+        </member>
+        <member name="M:Telegrator.States.RedisStateStorage.DeleteAsync(System.String,System.Threading.CancellationToken)">
+            <inheritdoc/>
+        </member>
+    </members>
+</doc>

docs/Telegrator.Hosting.Web.xml

@@ -28,6 +28,9 @@
             This application's logger
             </summary>
         </member>
+        <member name="P:Telegrator.Hosting.Web.TelegramBotWebHost.Properties">
+            <inheritdoc/>
+        </member>
         <member name="M:Telegrator.Hosting.Web.TelegramBotWebHost.#ctor(Microsoft.AspNetCore.Builder.WebApplicationBuilder)">
             <summary>
             Initializes a new instance of the <see cref="T:Microsoft.AspNetCore.Builder.WebApplicationBuilder"/> class.
@@ -81,9 +84,7 @@
             </summary>
         </member>
         <member name="T:Telegrator.Hosting.Web.TelegramBotWebHostBuilder">
-            <summary>
-            Represents a web hosted telegram bots and services builder that helps manage configuration, logging, lifetime, and more.
-            </summary>
+            <inheritdoc/>
         </member>
         <member name="P:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.Handlers">
             <inheritdoc/>
@@ -100,20 +101,24 @@
         <member name="P:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.Environment">
             <inheritdoc/>
         </member>
-        <member name="M:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.#ctor(Microsoft.AspNetCore.Builder.WebApplicationBuilder,Microsoft.AspNetCore.Builder.WebApplicationOptions)">
+        <member name="P:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.Properties">
+            <inheritdoc/>
+        </member>
+        <member name="P:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.Metrics">
+            <inheritdoc/>
+        </member>
+        <member name="M:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.#ctor(Microsoft.AspNetCore.Builder.WebApplicationBuilder)">
             <summary>
             Initializes a new instance of the <see cref="T:Telegrator.Hosting.Web.TelegramBotWebHostBuilder"/> class.
             </summary>
             <param name="webApplicationBuilder"></param>
-            <param name="settings"></param>
         </member>
-        <member name="M:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.#ctor(Microsoft.AspNetCore.Builder.WebApplicationBuilder,Telegrator.Core.IHandlersCollection,Microsoft.AspNetCore.Builder.WebApplicationOptions)">
+        <member name="M:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.#ctor(Microsoft.AspNetCore.Builder.WebApplicationBuilder,Telegrator.Core.IHandlersCollection)">
             <summary>
             Initializes a new instance of the <see cref="T:Telegrator.Hosting.Web.TelegramBotWebHostBuilder"/> class.
             </summary>
             <param name="webApplicationBuilder"></param>
             <param name="handlers"></param>
-            <param name="settings"></param>
         </member>
         <member name="M:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.Build">
             <summary>
@@ -121,6 +126,9 @@
             </summary>
             <returns></returns>
         </member>
+        <member name="M:Telegrator.Hosting.Web.TelegramBotWebHostBuilder.ConfigureContainer``1(Microsoft.Extensions.DependencyInjection.IServiceProviderFactory{``0},System.Action{``0})">
+            <inheritdoc/>
+        </member>
         <member name="T:Telegrator.Hosting.Web.WebhookerOptions">
             <summary>
             Configuration options for Telegram bot behavior and execution settings.
@@ -155,11 +163,10 @@
             Service for receiving updates for Hosted telegram bots via Webhooks
             </summary>
         </member>
-        <member name="M:Telegrator.Mediation.HostedUpdateWebhooker.#ctor(Microsoft.AspNetCore.Routing.IEndpointRouteBuilder,Telegram.Bot.ITelegramBotClient,Telegrator.Core.IUpdateRouter,Microsoft.Extensions.Options.IOptions{Telegrator.Hosting.Web.WebhookerOptions})">
+        <member name="M:Telegrator.Mediation.HostedUpdateWebhooker.#ctor(Telegram.Bot.ITelegramBotClient,Telegrator.Core.IUpdateRouter,Microsoft.Extensions.Options.IOptions{Telegrator.Hosting.Web.WebhookerOptions})">
             <summary>
             Initiallizes new instance of <see cref="T:Telegrator.Mediation.HostedUpdateWebhooker"/>
             </summary>
-            <param name="botHost"></param>
             <param name="botClient"></param>
             <param name="updateRouter"></param>
             <param name="options"></param>
@@ -171,6 +178,22 @@
         <member name="M:Telegrator.Mediation.HostedUpdateWebhooker.StopAsync(System.Threading.CancellationToken)">
             <inheritdoc/>
         </member>
+        <member name="M:Telegrator.Mediation.HostedUpdateWebhooker.RemapWebhook(Microsoft.AspNetCore.Routing.IEndpointRouteBuilder,System.String,System.Threading.CancellationToken)">
+            <summary>
+            Allows to remap receiving webhook endpoint and map new route to webhost.
+            </summary>
+            <param name="routeBuilder"></param>
+            <param name="webhookUri"></param>
+            <param name="cancellationToken"></param>
+            <returns></returns>
+            <exception cref="T:System.ArgumentException"></exception>
+        </member>
+        <member name="M:Telegrator.Mediation.HostedUpdateWebhooker.MapWebhook(Microsoft.AspNetCore.Routing.IEndpointRouteBuilder)">
+            <summary>
+            Maps bot webhook to application builder
+            </summary>
+            <param name="routeBuilder"></param>
+        </member>
         <member name="T:Telegrator.ServicesCollectionExtensions">
             <summary>
             Contains extensions for <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceCollection"/>
@@ -185,17 +208,44 @@
         <member name="M:Telegrator.ServicesCollectionExtensions.get_Handlers(Microsoft.AspNetCore.Builder.WebApplicationBuilder)">
             <inheritdoc cref="P:Telegrator.ServicesCollectionExtensions.&lt;G&gt;$41F16C2D39AF52899E745C9C9F42FF83.Handlers"/>
         </member>
-        <member name="M:Telegrator.ServicesCollectionExtensions.AddTelegratorWeb(Microsoft.Extensions.Hosting.IHostApplicationBuilder,Microsoft.AspNetCore.Builder.WebApplicationOptions,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection)">
+        <member name="M:Telegrator.ServicesCollectionExtensions.AddTelegratorWeb(Telegrator.Hosting.ITelegramBotHostBuilder,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection,System.Action{Telegrator.Hosting.ITelegramBotHostBuilder})">
             <summary>
             Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
             </summary>
         </member>
-        <member name="M:Telegrator.ServicesCollectionExtensions.UseTelegratorWeb(Microsoft.AspNetCore.Builder.WebApplication)">
+        <member name="M:Telegrator.ServicesCollectionExtensions.AddTelegratorWeb(Microsoft.AspNetCore.Builder.WebApplicationBuilder,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection,System.Action{Telegrator.Hosting.ITelegramBotHostBuilder})">
+            <summary>
+            Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
+            </summary>
+        </member>
+        <member name="M:Telegrator.ServicesCollectionExtensions.AddTelegratorWebInternal(Microsoft.Extensions.DependencyInjection.IServiceCollection,Microsoft.Extensions.Configuration.IConfiguration,System.Collections.Generic.IDictionary{System.Object,System.Object},Telegrator.Core.IHandlersCollection@,Telegrator.TelegratorOptions)">
+            <summary>
+            Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
+            </summary>
+        </member>
+        <member name="M:Telegrator.ServicesCollectionExtensions.TryFindWebhooker(System.IServiceProvider,Telegrator.Mediation.HostedUpdateWebhooker@)">
+            <summary>
+            Searchs for <see cref="T:Telegrator.Mediation.HostedUpdateWebhooker"/> hosted service inside hosts services
+            </summary>
+            <param name="services"></param>
+            <param name="webhooker"></param>
+            <returns></returns>
+        </member>
+        <member name="M:Telegrator.ServicesCollectionExtensions.UseTelegratorWeb``1(``0,System.Boolean)">
             <summary>
             Replaces the initialization logic from TelegramBotWebHost constructor. 
             Initializes the bot and logs handlers on application startup.
             </summary>
         </member>
+        <member name="M:Telegrator.ServicesCollectionExtensions.RemapWebhook``1(``0,System.String)">
+            <summary>
+            Allows to remap receiving webhook endpoint and map new route to webhost.
+            </summary>
+            <param name="app"></param>
+            <param name="webhookUri"></param>
+            <returns></returns>
+            <exception cref="T:System.ArgumentException"></exception>
+        </member>
         <member name="M:Telegrator.ServicesCollectionExtensions.AddTelegramWebhook(Microsoft.Extensions.DependencyInjection.IServiceCollection)">
             <summary>
             Registers <see cref="T:Telegram.Bot.ITelegramBotClient"/> service with <see cref="T:Telegrator.Mediation.HostedUpdateWebhooker"/> to receive updates using webhook

docs/Telegrator.Hosting.xml

@@ -13,7 +13,7 @@
             <param name="services"></param>
             <param name="configuration"></param>
         </member>
-        <member name="M:Telegrator.Hosting.HostedTelegramBotInfo.#ctor(Telegram.Bot.ITelegramBotClient,System.IServiceProvider,Microsoft.Extensions.Configuration.IConfigurationManager)">
+        <member name="M:Telegrator.Hosting.HostedTelegramBotInfo.#ctor(Telegram.Bot.ITelegramBotClient,System.IServiceProvider,Microsoft.Extensions.Configuration.IConfiguration)">
             <summary>
             Implementation of <see cref="T:Telegrator.Core.ITelegramBotInfo"/> that provides bot information.
             Contains metadata about the Telegram bot including user details and service provider for wider filterring abilities
@@ -37,23 +37,7 @@
         </member>
         <member name="T:Telegrator.Hosting.ITelegramBotHostBuilder">
             <summary>
-            Interface for building Telegram bot hosts with dependency injection support.
-            Combines host application building capabilities with handler collection functionality.
-            </summary>
-        </member>
-        <member name="P:Telegrator.Hosting.ITelegramBotHostBuilder.Configuration">
-            <summary>
-            Gets the set of key/value configuration properties.
-            </summary>
-        </member>
-        <member name="P:Telegrator.Hosting.ITelegramBotHostBuilder.Logging">
-            <summary>
-            Gets a collection of logging providers for the application to compose. This is useful for adding new logging providers.
-            </summary>
-        </member>
-        <member name="P:Telegrator.Hosting.ITelegramBotHostBuilder.Services">
-            <summary>
-            Gets a collection of services for the application to compose. This is useful for adding user provided or framework provided services.
+            Represents a hosted telegram bots and services builder that helps manage configuration, logging, lifetime, and more.
             </summary>
         </member>
         <member name="T:Telegrator.Hosting.TelegramBotHost">
@@ -114,9 +98,7 @@
             </summary>
         </member>
         <member name="T:Telegrator.Hosting.TelegramBotHostBuilder">
-            <summary>
-            Represents a hosted telegram bots and services builder that helps manage configuration, logging, lifetime, and more.
-            </summary>
+            <inheritdoc/>
         </member>
         <member name="P:Telegrator.Hosting.TelegramBotHostBuilder.Handlers">
             <inheritdoc/>
@@ -133,20 +115,24 @@
         <member name="P:Telegrator.Hosting.TelegramBotHostBuilder.Environment">
             <inheritdoc/>
         </member>
-        <member name="M:Telegrator.Hosting.TelegramBotHostBuilder.#ctor(Microsoft.Extensions.Hosting.HostApplicationBuilder,Microsoft.Extensions.Hosting.HostApplicationBuilderSettings)">
+        <member name="P:Telegrator.Hosting.TelegramBotHostBuilder.Properties">
+            <inheritdoc/>
+        </member>
+        <member name="P:Telegrator.Hosting.TelegramBotHostBuilder.Metrics">
+            <inheritdoc/>
+        </member>
+        <member name="M:Telegrator.Hosting.TelegramBotHostBuilder.#ctor(Microsoft.Extensions.Hosting.HostApplicationBuilder)">
             <summary>
             Initializes a new instance of the <see cref="T:Telegrator.Hosting.TelegramBotHostBuilder"/> class.
             </summary>
             <param name="hostApplicationBuilder"></param>
-            <param name="settings"></param>
         </member>
-        <member name="M:Telegrator.Hosting.TelegramBotHostBuilder.#ctor(Microsoft.Extensions.Hosting.HostApplicationBuilder,Telegrator.Core.IHandlersCollection,Microsoft.Extensions.Hosting.HostApplicationBuilderSettings)">
+        <member name="M:Telegrator.Hosting.TelegramBotHostBuilder.#ctor(Microsoft.Extensions.Hosting.HostApplicationBuilder,Telegrator.Core.IHandlersCollection)">
             <summary>
             Initializes a new instance of the <see cref="T:Telegrator.Hosting.TelegramBotHostBuilder"/> class.
             </summary>
             <param name="hostApplicationBuilder"></param>
             <param name="handlers"></param>
-            <param name="settings"></param>
         </member>
         <member name="M:Telegrator.Hosting.TelegramBotHostBuilder.Build">
             <summary>
@@ -154,6 +140,9 @@
             </summary>
             <returns></returns>
         </member>
+        <member name="M:Telegrator.Hosting.TelegramBotHostBuilder.ConfigureContainer``1(Microsoft.Extensions.DependencyInjection.IServiceProviderFactory{``0},System.Action{``0})">
+            <inheritdoc/>
+        </member>
         <member name="T:Telegrator.Logging.MicrosoftLoggingAdapter">
             <summary>
             Adapter for Microsoft.Extensions.Logging to work with Telegrator logging system.
@@ -190,12 +179,6 @@
         <member name="M:Telegrator.Polling.HostedUpdateReceiver.ExecuteAsync(System.Threading.CancellationToken)">
             <inheritdoc/>
         </member>
-        <member name="T:Telegrator.Polling.HostUpdateHandlersPool">
-            <inheritdoc/>
-        </member>
-        <member name="M:Telegrator.Polling.HostUpdateHandlersPool.#ctor(Telegrator.Core.IUpdateRouter,Microsoft.Extensions.Options.IOptions{Telegrator.TelegratorOptions})">
-            <inheritdoc/>
-        </member>
         <member name="T:Telegrator.Polling.HostUpdateRouter">
             <inheritdoc/>
         </member>
@@ -204,7 +187,7 @@
             <see cref="T:Microsoft.Extensions.Logging.ILogger"/> of this router
             </summary>
         </member>
-        <member name="M:Telegrator.Polling.HostUpdateRouter.#ctor(Telegrator.Core.IHandlersProvider,Telegrator.Core.IAwaitingProvider,Microsoft.Extensions.Options.IOptions{Telegrator.TelegratorOptions},Telegrator.Core.IUpdateHandlersPool,Telegrator.Core.ITelegramBotInfo,Microsoft.Extensions.Logging.ILogger{Telegrator.Polling.HostUpdateRouter})">
+        <member name="M:Telegrator.Polling.HostUpdateRouter.#ctor(Telegrator.Core.IHandlersProvider,Telegrator.Core.IAwaitingProvider,Telegrator.Core.States.IStateStorage,Microsoft.Extensions.Options.IOptions{Telegrator.TelegratorOptions},Telegrator.Core.ITelegramBotInfo,Microsoft.Extensions.Logging.ILogger{Telegrator.Polling.HostUpdateRouter})">
             <inheritdoc/>
         </member>
         <member name="M:Telegrator.Polling.HostUpdateRouter.HandleUpdateAsync(Telegram.Bot.ITelegramBotClient,Telegram.Bot.Types.Update,System.Threading.CancellationToken)">
@@ -222,7 +205,7 @@
         <member name="T:Telegrator.Providers.HostAwaitingProvider">
             <inheritdoc/>
         </member>
-        <member name="M:Telegrator.Providers.HostAwaitingProvider.#ctor(Microsoft.Extensions.Options.IOptions{Telegrator.TelegratorOptions},Microsoft.Extensions.Logging.ILogger{Telegrator.Providers.HostAwaitingProvider})">
+        <member name="M:Telegrator.Providers.HostAwaitingProvider.#ctor(Microsoft.Extensions.Options.IOptions{Telegrator.TelegratorOptions})">
             <inheritdoc/>
         </member>
         <member name="T:Telegrator.Providers.HostHandlersCollection">
@@ -240,7 +223,7 @@
         <member name="T:Telegrator.Providers.HostHandlersProvider">
             <inheritdoc/>
         </member>
-        <member name="M:Telegrator.Providers.HostHandlersProvider.#ctor(Telegrator.Core.IHandlersCollection,Microsoft.Extensions.Options.IOptions{Telegrator.TelegratorOptions},System.IServiceProvider,Microsoft.Extensions.Logging.ILogger{Telegrator.Providers.HostHandlersProvider})">
+        <member name="M:Telegrator.Providers.HostHandlersProvider.#ctor(Telegrator.Core.IHandlersCollection,Microsoft.Extensions.Options.IOptions{Telegrator.TelegratorOptions},System.IServiceProvider)">
             <inheritdoc/>
         </member>
         <member name="M:Telegrator.Providers.HostHandlersProvider.GetHandlerInstance(Telegrator.Core.Descriptors.HandlerDescriptor,System.Threading.CancellationToken)">
@@ -256,17 +239,29 @@
             The key used to store the <see cref="T:Telegrator.Core.IHandlersCollection"/> in the builder properties.
             </summary>
         </member>
-        <member name="M:Telegrator.HostBuilderExtensions.get_Handlers(Microsoft.Extensions.Hosting.IHostApplicationBuilder)">
-            <inheritdoc cref="P:Telegrator.HostBuilderExtensions.&lt;G&gt;$605D8CCF64349EA050C790D67C500BD9.Handlers"/>
-        </member>
-        <member name="M:Telegrator.HostBuilderExtensions.AddTelegrator(Microsoft.Extensions.Hosting.IHostApplicationBuilder,Microsoft.Extensions.Hosting.HostApplicationBuilderSettings,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection)">
+        <member name="M:Telegrator.HostBuilderExtensions.AddTelegrator(Telegrator.Hosting.ITelegramBotHostBuilder,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection,System.Action{Telegrator.Hosting.ITelegramBotHostBuilder})">
             <summary>
-            Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
+            Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
             </summary>
         </member>
-        <member name="P:Telegrator.HostBuilderExtensions.&lt;G&gt;$605D8CCF64349EA050C790D67C500BD9.Handlers">
+        <member name="M:Telegrator.HostBuilderExtensions.AddTelegrator(Microsoft.Extensions.Hosting.HostApplicationBuilder,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection,System.Action{Telegrator.Hosting.ITelegramBotHostBuilder})">
             <summary>
-            Gets the <see cref="T:Telegrator.Core.IHandlersCollection"/> from the builder properties.
+            Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
+            </summary>
+        </member>
+        <member name="M:Telegrator.HostBuilderExtensions.AddTelegrator(Microsoft.Extensions.Hosting.IHostApplicationBuilder,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection)">
+            <summary>
+            Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
+            </summary>
+        </member>
+        <member name="M:Telegrator.HostBuilderExtensions.AddTelegrator(Microsoft.Extensions.Hosting.IHostBuilder,Telegrator.TelegratorOptions,Telegrator.Core.IHandlersCollection)">
+            <summary>
+            Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
+            </summary>
+        </member>
+        <member name="M:Telegrator.HostBuilderExtensions.AddTelegratorInternal(Microsoft.Extensions.DependencyInjection.IServiceCollection,Microsoft.Extensions.Configuration.IConfiguration,System.Collections.Generic.IDictionary{System.Object,System.Object},Telegrator.Core.IHandlersCollection@,Telegrator.TelegratorOptions)">
+            <summary>
+            Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
             </summary>
         </member>
         <member name="T:Telegrator.ServicesCollectionExtensions">
@@ -275,6 +270,14 @@
             Provides method to configure Telegram Bot Host
             </summary>
         </member>
+        <member name="M:Telegrator.ServicesCollectionExtensions.AddStateStorage``1(Microsoft.Extensions.DependencyInjection.IServiceCollection)">
+            <summary>
+            Registers <see cref="T:Telegrator.Core.States.IStateStorage"/> service
+            </summary>
+            <typeparam name="TStorage"></typeparam>
+            <param name="services"></param>
+            <returns></returns>
+        </member>
         <member name="M:Telegrator.ServicesCollectionExtensions.AddTelegramBotHostDefaults(Microsoft.Extensions.DependencyInjection.IServiceCollection)">
             <summary>
             Registers <see cref="T:Telegrator.Hosting.TelegramBotHost"/> default services

examples/EchoBot/EchoBot.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+	<PackageReference Include="Telegrator" Version="1.16.2"/>
+  </ItemGroup>
+</Project>

examples/EchoBot/Program.cs

@@ -0,0 +1,11 @@
+using Telegrator;
+
+namespace Telegrator.Examples;
+
+public class EchoBot
+{
+    public static void Main(string[] args)
+    {
+        var client = new TelegratorClient();
+    }
+}

src/Telegartor.RedisStateStorage/README.md

@@ -0,0 +1,57 @@
+# Telegrator.RedisStateStorage
+
+**Telegrator.RedisStateStorage** is an extension for the Telegrator framework that provides Redis powered IStateStorage implementation.
+
+---
+
+## Requirements
+- .NET standart 2.1 or later
+- [Telegrator](https://github.com/Rikitav/Telegrator)
+
+---
+
+## Installation
+
+```shell
+dotnet add package Telegrator.RedisStateStorage
+```
+
+---
+
+## Quick Start Example
+
+**Program.cs:**
+```csharp
+using Telegrator.Hosting;
+
+// Creating builder
+TelegramBotHostBuilder builder = TelegramBotHost.CreateBuilder(new HostApplicationBuilderSettings()
+{
+    Args = args,
+    ApplicationName = "TelegramBotHost example",
+});
+
+// Registerring handlers
+builder.Handlers.CollectHandlersAssemblyWide();
+
+// Register your services and 
+builder.Services.AddService<IStateStorage, RedisStateStorage>(services =>
+    new RedisStateStorage(ConnectionMultiplexer.Connect("server1:6379, server2:6379")));
+
+// Building and running application
+TelegramBotHost telegramBot = builder.Build();
+telegramBot.SetBotCommands();
+telegramBot.Run();
+```
+
+---
+
+## Documentation
+- [Telegrator Main Docs](https://github.com/Rikitav/Telegrator)
+- [Getting Started Guide](https://github.com/Rikitav/Telegrator/wiki/Getting-started)
+- [Annotation Overview](https://github.com/Rikitav/Telegrator/wiki/Annotation-overview)
+
+---
+
+## License
+GPLv3 

src/Telegartor.RedisStateStorage/States/RedisStateStorage.cs

@@ -0,0 +1,39 @@
+using StackExchange.Redis;
+using System.Text.Json;
+using Telegrator.Core.States;
+
+namespace Telegrator.States;
+
+/// <summary>
+/// Provides a Redis-based implementation of the <see cref="IStateStorage"/> interface.
+/// Serializes state objects to JSON format before storing them in the Redis database.
+/// </summary>
+public class RedisStateStorage(IConnectionMultiplexer redis) : IStateStorage
+{
+    private readonly IDatabase _db = redis.GetDatabase();
+
+    /// <inheritdoc/>
+    public async Task SetAsync<T>(string key, T state, CancellationToken cancellationToken)
+    {
+        string json = JsonSerializer.Serialize(state);
+        await _db.StringSetAsync(key, json);
+    }
+
+    /// <inheritdoc/>
+    public async Task<T?> GetAsync<T>(string key, CancellationToken cancellationToken)
+    {
+        RedisValue json = await _db.StringGetAsync(key);
+        string? jsonStr = json;
+
+        if (jsonStr is null)
+            return default;
+
+        return JsonSerializer.Deserialize<T?>(json: jsonStr);
+    }
+
+    /// <inheritdoc/>
+    public async Task DeleteAsync(string key, CancellationToken cancellationToken = default)
+    {
+        await _db.KeyDeleteAsync(key);
+    }
+}

src/Telegartor.RedisStateStorage/Telegartor.RedisStateStorage.csproj

@@ -0,0 +1,43 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+	<LangVersion>latest</LangVersion>
+	<RootNamespace>Telegrator</RootNamespace>
+	<BaseOutputPath>..\..\bin</BaseOutputPath>
+	<DocumentationFile>..\..\docs\$(AssemblyName).xml</DocumentationFile>
+	  
+    <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
+    <GenerateDocumentationFile>True</GenerateDocumentationFile>
+    <EnableNETAnalyzers>True</EnableNETAnalyzers>
+    <EnforceCodeStyleInBuild>True</EnforceCodeStyleInBuild>
+	  
+    <Title>Telegrator.RedisStateStorage</Title>
+    <Version>1.16.6</Version>
+	<Authors>Rikitav Tim4ik</Authors>
+    <Company>Rikitav Tim4ik</Company>
+    <RepositoryUrl>https://github.com/Rikitav/Telegrator</RepositoryUrl>
+    <PackageTags>telegram;bot;mediator;attributes;aspect;hosting;host;framework;easy;simple;handlers</PackageTags>
+	  
+    <PackageIcon>telegrator_nuget.png</PackageIcon>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <PackageLicenseFile>LICENSE</PackageLicenseFile>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Telegrator\Telegrator.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="StackExchange.Redis" Version="2.12.14" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include=".\README.md" Pack="True" PackagePath="\" />
+    <None Include="..\..\LICENSE" Pack="True" PackagePath="\" />
+    <None Include="..\..\resources\telegrator_nuget.png" Pack="True" PackagePath="\" />
+  </ItemGroup>
+  
+</Project>

src/Telegrator.Hosting.Web/GlobalSuppressions.cs

@@ -9,3 +9,4 @@ using System.Diagnostics.CodeAnalysis;
 [assembly: SuppressMessage("Style", "IDE0090")]
 [assembly: SuppressMessage("Usage", "CA2254")]
 [assembly: SuppressMessage("Maintainability", "CA1510")]
+[assembly: SuppressMessage("Style", "IDE0270")]

src/Telegrator.Hosting.Web/Hosting.Web/TelegramBotWebHost.cs

@@ -7,155 +7,153 @@ using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Telegrator.Core;
 
-namespace Telegrator.Hosting.Web
+namespace Telegrator.Hosting.Web;
+
+/// <summary>
+/// Represents a web hosted telegram bot
+/// </summary>
+public class TelegramBotWebHost : IHost, IApplicationBuilder, IEndpointRouteBuilder, IAsyncDisposable
 {
+    private readonly WebApplication _innerApp;
+    private readonly IUpdateRouter _updateRouter;
+    private readonly ILogger<TelegramBotWebHost> _logger;
+
+    private bool _disposed;
+
+    /// <inheritdoc/>
+    public IServiceProvider Services => _innerApp.Services;
+
+    /// <inheritdoc/>
+    public IUpdateRouter UpdateRouter => _updateRouter;
+
+    /// <inheritdoc/>
+    public ICollection<EndpointDataSource> DataSources => ((IEndpointRouteBuilder)_innerApp).DataSources;
+
     /// <summary>
-    /// Represents a web hosted telegram bot
+    /// Allows consumers to be notified of application lifetime events.
     /// </summary>
-    public class TelegramBotWebHost : IHost, IApplicationBuilder, IEndpointRouteBuilder, IAsyncDisposable
+    public IHostApplicationLifetime Lifetime => _innerApp.Lifetime;
+
+    /// <summary>
+    /// This application's logger
+    /// </summary>
+    public ILogger<TelegramBotWebHost> Logger => _logger;
+
+    /// <inheritdoc/>
+    public IDictionary<string, object?> Properties => ((IApplicationBuilder)_innerApp).Properties;
+
+    // Private interface fields
+    IServiceProvider IEndpointRouteBuilder.ServiceProvider => Services;
+    IServiceProvider IApplicationBuilder.ApplicationServices { get => Services; set => throw new NotImplementedException(); }
+    IFeatureCollection IApplicationBuilder.ServerFeatures => ((IApplicationBuilder)_innerApp).ServerFeatures;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="WebApplicationBuilder"/> class.
+    /// </summary>
+    /// <param name="webApplicationBuilder">The proxied instance of host builder.</param>
+    public TelegramBotWebHost(WebApplicationBuilder webApplicationBuilder)
     {
-        private readonly WebApplication _innerApp;
-        private readonly IUpdateRouter _updateRouter;
-        private readonly ILogger<TelegramBotWebHost> _logger;
+        // Building proxy application
+        _innerApp = webApplicationBuilder.Build();
 
-        private bool _disposed;
+        // Reruesting services for this host
+        _updateRouter = Services.GetRequiredService<IUpdateRouter>();
+        _logger = Services.GetRequiredService<ILogger<TelegramBotWebHost>>();
+    }
 
-        /// <inheritdoc/>
-        public IServiceProvider Services => _innerApp.Services;
+    /// <summary>
+    /// Creates new <see cref="TelegramBotHostBuilder"/> with default services and webhook update receiving scheme
+    /// </summary>
+    /// <returns></returns>
+    public static TelegramBotWebHostBuilder CreateBuilder(WebApplicationOptions? settings)
+    {
+        ArgumentNullException.ThrowIfNull(settings, nameof(settings));
+        WebApplicationBuilder innerApp = WebApplication.CreateBuilder(settings);
+        TelegramBotWebHostBuilder builder = new TelegramBotWebHostBuilder(innerApp);
+        builder.AddTelegratorWeb();
+        return builder;
+    }
 
-        /// <inheritdoc/>
-        public IUpdateRouter UpdateRouter => _updateRouter;
+    /// <summary>
+    /// Creates new SLIM <see cref="TelegramBotHostBuilder"/> with default services and webhook update receiving scheme
+    /// </summary>
+    /// <returns></returns>
+    public static TelegramBotWebHostBuilder CreateSlimBuilder(WebApplicationOptions? settings)
+    {
+        ArgumentNullException.ThrowIfNull(settings, nameof(settings));
+        WebApplicationBuilder innerApp = WebApplication.CreateSlimBuilder(settings);
+        TelegramBotWebHostBuilder builder = new TelegramBotWebHostBuilder(innerApp);
+        builder.AddTelegratorWeb();
+        return builder;
+    }
 
-        /// <inheritdoc/>
-        public ICollection<EndpointDataSource> DataSources => ((IEndpointRouteBuilder)_innerApp).DataSources;
+    /// <summary>
+    /// Creates new EMPTY <see cref="TelegramBotHostBuilder"/> WITHOUT any services or update receiving schemes
+    /// </summary>
+    /// <returns></returns>
+    public static TelegramBotWebHostBuilder CreateEmptyBuilder(WebApplicationOptions? settings)
+    {
+        ArgumentNullException.ThrowIfNull(settings, nameof(settings));
+        WebApplicationBuilder innerApp = WebApplication.CreateEmptyBuilder(settings);
+        TelegramBotWebHostBuilder builder = new TelegramBotWebHostBuilder(innerApp);
+        builder.AddTelegratorWeb();
+        return builder;
+    }
 
-        /// <summary>
-        /// Allows consumers to be notified of application lifetime events.
-        /// </summary>
-        public IHostApplicationLifetime Lifetime => _innerApp.Lifetime;
+    /// <inheritdoc/>
+    public async Task StartAsync(CancellationToken cancellationToken = default)
+    {
+        await _innerApp.StartAsync(cancellationToken);
+    }
 
-        /// <summary>
-        /// This application's logger
-        /// </summary>
-        public ILogger<TelegramBotWebHost> Logger => _logger;
+    /// <inheritdoc/>
+    public async Task StopAsync(CancellationToken cancellationToken = default)
+    {
+        await _innerApp.StopAsync(cancellationToken);
+    }
 
-        // Private interface fields
-        IServiceProvider IEndpointRouteBuilder.ServiceProvider => Services;
-        IServiceProvider IApplicationBuilder.ApplicationServices { get => Services; set => throw new NotImplementedException(); }
-        IFeatureCollection IApplicationBuilder.ServerFeatures => ((IApplicationBuilder)_innerApp).ServerFeatures;
-        IDictionary<string, object?> IApplicationBuilder.Properties => ((IApplicationBuilder)_innerApp).Properties;
+    /// <inheritdoc/>
+    public IApplicationBuilder CreateApplicationBuilder()
+        => ((IEndpointRouteBuilder)_innerApp).CreateApplicationBuilder();
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="WebApplicationBuilder"/> class.
-        /// </summary>
-        /// <param name="webApplicationBuilder">The proxied instance of host builder.</param>
-        public TelegramBotWebHost(WebApplicationBuilder webApplicationBuilder)
-        {
-            // Building proxy application
-            _innerApp = webApplicationBuilder.Build();
-            _innerApp.UseTelegratorWeb();
+    /// <inheritdoc/>
+    public IApplicationBuilder Use(Func<RequestDelegate, RequestDelegate> middleware)
+        => _innerApp.Use(middleware);
 
-            // Reruesting services for this host
-            _updateRouter = Services.GetRequiredService<IUpdateRouter>();
-            _logger = Services.GetRequiredService<ILogger<TelegramBotWebHost>>();
-        }
+    /// <inheritdoc/>
+    public IApplicationBuilder New()
+        => ((IApplicationBuilder)_innerApp).New();
 
-        /// <summary>
-        /// Creates new <see cref="TelegramBotHostBuilder"/> with default services and webhook update receiving scheme
-        /// </summary>
-        /// <returns></returns>
-        public static TelegramBotWebHostBuilder CreateBuilder(WebApplicationOptions settings)
-        {
-            ArgumentNullException.ThrowIfNull(settings, nameof(settings));
-            WebApplicationBuilder innerApp = WebApplication.CreateBuilder(settings);
-            TelegramBotWebHostBuilder builder = new TelegramBotWebHostBuilder(innerApp, settings);
+    /// <inheritdoc/>
+    public RequestDelegate Build()
+        => ((IApplicationBuilder)_innerApp).Build();
 
-            builder.Services.AddTelegramBotHostDefaults();
-            builder.Services.AddTelegramWebhook();
-            return builder;
-        }
+    /// <summary>
+    /// Disposes the host.
+    /// </summary>
+    public async ValueTask DisposeAsync()
+    {
+        if (_disposed)
+            return;
 
-        /// <summary>
-        /// Creates new SLIM <see cref="TelegramBotHostBuilder"/> with default services and webhook update receiving scheme
-        /// </summary>
-        /// <returns></returns>
-        public static TelegramBotWebHostBuilder CreateSlimBuilder(WebApplicationOptions settings)
-        {
-            ArgumentNullException.ThrowIfNull(settings, nameof(settings));
-            WebApplicationBuilder innerApp = WebApplication.CreateSlimBuilder(settings);
-            TelegramBotWebHostBuilder builder = new TelegramBotWebHostBuilder(innerApp, settings);
+        await _innerApp.DisposeAsync();
 
-            builder.Services.AddTelegramBotHostDefaults();
-            builder.Services.AddTelegramWebhook();
-            return builder;
-        }
+        GC.SuppressFinalize(this);
+        _disposed = true;
+    }
 
-        /// <summary>
-        /// Creates new EMPTY <see cref="TelegramBotHostBuilder"/> WITHOUT any services or update receiving schemes
-        /// </summary>
-        /// <returns></returns>
-        public static TelegramBotWebHostBuilder CreateEmptyBuilder(WebApplicationOptions settings)
-        {
-            ArgumentNullException.ThrowIfNull(settings, nameof(settings));
-            WebApplicationBuilder innerApp = WebApplication.CreateEmptyBuilder(settings);
-            return new TelegramBotWebHostBuilder(innerApp, settings);
-        }
+    /// <summary>
+    /// Disposes the host.
+    /// </summary>
+    public void Dispose()
+    {
+        if (_disposed)
+            return;
 
-        /// <inheritdoc/>
-        public async Task StartAsync(CancellationToken cancellationToken = default)
-        {
-            await _innerApp.StartAsync(cancellationToken);
-        }
+        ValueTask disposeTask = _innerApp.DisposeAsync();
+        disposeTask.AsTask().Wait();
 
-        /// <inheritdoc/>
-        public async Task StopAsync(CancellationToken cancellationToken = default)
-        {
-            await _innerApp.StopAsync(cancellationToken);
-        }
-
-        /// <inheritdoc/>
-        public IApplicationBuilder CreateApplicationBuilder()
-            => ((IEndpointRouteBuilder)_innerApp).CreateApplicationBuilder();
-
-        /// <inheritdoc/>
-        public IApplicationBuilder Use(Func<RequestDelegate, RequestDelegate> middleware)
-            => _innerApp.Use(middleware);
-
-        /// <inheritdoc/>
-        public IApplicationBuilder New()
-            => ((IApplicationBuilder)_innerApp).New();
-
-        /// <inheritdoc/>
-        public RequestDelegate Build()
-            => ((IApplicationBuilder)_innerApp).Build();
-
-        /// <summary>
-        /// Disposes the host.
-        /// </summary>
-        public async ValueTask DisposeAsync()
-        {
-            if (_disposed)
-                return;
-
-            await _innerApp.DisposeAsync();
-
-            GC.SuppressFinalize(this);
-            _disposed = true;
-        }
-
-        /// <summary>
-        /// Disposes the host.
-        /// </summary>
-        public void Dispose()
-        {
-            if (_disposed)
-                return;
-
-            ValueTask disposeTask = _innerApp.DisposeAsync();
-            disposeTask.AsTask().Wait();
-
-            GC.SuppressFinalize(this);
-            _disposed = true;
-        }
+        GC.SuppressFinalize(this);
+        _disposed = true;
     }
 }

src/Telegrator.Hosting.Web/Hosting.Web/TelegramBotWebHostBuilder.cs

@@ -1,77 +1,75 @@
 using Microsoft.AspNetCore.Builder;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Diagnostics.Metrics;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
-using Telegram.Bot;
-using Telegrator;
 using Telegrator.Core;
-using Telegrator.Providers;
 
 #pragma warning disable IDE0001
-namespace Telegrator.Hosting.Web
+namespace Telegrator.Hosting.Web;
+
+/// <inheritdoc/>
+public class TelegramBotWebHostBuilder : ITelegramBotHostBuilder
 {
+    private readonly WebApplicationBuilder _innerBuilder;
+    internal IHandlersCollection _handlers = null!;
+
+    /// <inheritdoc/>
+    public IHandlersCollection Handlers => _handlers;
+
+    /// <inheritdoc/>
+    public IConfigurationManager Configuration => _innerBuilder.Configuration;
+
+    /// <inheritdoc/>
+    public ILoggingBuilder Logging => _innerBuilder.Logging;
+
+    /// <inheritdoc/>
+    public IServiceCollection Services => _innerBuilder.Services;
+
+    /// <inheritdoc/>
+    public IHostEnvironment Environment => _innerBuilder.Environment;
+
+    /// <inheritdoc/>
+    public IDictionary<object, object> Properties => ((IHostApplicationBuilder)_innerBuilder).Properties;
+
+    /// <inheritdoc/>
+    public IMetricsBuilder Metrics => _innerBuilder.Metrics;
+
     /// <summary>
-    /// Represents a web hosted telegram bots and services builder that helps manage configuration, logging, lifetime, and more.
+    /// Initializes a new instance of the <see cref="TelegramBotWebHostBuilder"/> class.
     /// </summary>
-    public class TelegramBotWebHostBuilder : ITelegramBotHostBuilder
+    /// <param name="webApplicationBuilder"></param>
+    public TelegramBotWebHostBuilder(WebApplicationBuilder webApplicationBuilder)
     {
-        private readonly WebApplicationBuilder _innerBuilder;
-        private readonly WebApplicationOptions _settings;
-        internal IHandlersCollection _handlers = null!;
+        _innerBuilder = webApplicationBuilder ?? throw new ArgumentNullException(nameof(webApplicationBuilder));
+    }
 
-        /// <inheritdoc/>
-        public IHandlersCollection Handlers => _handlers;
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TelegramBotWebHostBuilder"/> class.
+    /// </summary>
+    /// <param name="webApplicationBuilder"></param>
+    /// <param name="handlers"></param>
+    public TelegramBotWebHostBuilder(WebApplicationBuilder webApplicationBuilder, IHandlersCollection handlers)
+    {
+        _innerBuilder = webApplicationBuilder ?? throw new ArgumentNullException(nameof(webApplicationBuilder));
+        _handlers = handlers ?? throw new ArgumentNullException(nameof(handlers));
+    }
 
-        /// <inheritdoc/>
-        public IConfigurationManager Configuration => _innerBuilder.Configuration;
+    /// <summary>
+    /// Builds the host.
+    /// </summary>
+    /// <returns></returns>
+    public TelegramBotWebHost Build()
+    {
+        TelegramBotWebHost host = new TelegramBotWebHost(_innerBuilder);
+        host.UseTelegratorWeb();
+        return host;
+    }
 
-        /// <inheritdoc/>
-        public ILoggingBuilder Logging => _innerBuilder.Logging;
-
-        /// <inheritdoc/>
-        public IServiceCollection Services => _innerBuilder.Services;
-
-        /// <inheritdoc/>
-        public IHostEnvironment Environment => _innerBuilder.Environment;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="TelegramBotWebHostBuilder"/> class.
-        /// </summary>
-        /// <param name="webApplicationBuilder"></param>
-        /// <param name="settings"></param>
-        public TelegramBotWebHostBuilder(WebApplicationBuilder webApplicationBuilder, WebApplicationOptions settings)
-        {
-            _innerBuilder = webApplicationBuilder ?? throw new ArgumentNullException(nameof(webApplicationBuilder));
-            _settings = settings ?? throw new ArgumentNullException(nameof(settings));
-
-            _innerBuilder.AddTelegratorWeb(settings);
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="TelegramBotWebHostBuilder"/> class.
-        /// </summary>
-        /// <param name="webApplicationBuilder"></param>
-        /// <param name="handlers"></param>
-        /// <param name="settings"></param>
-        public TelegramBotWebHostBuilder(WebApplicationBuilder webApplicationBuilder, IHandlersCollection handlers, WebApplicationOptions settings)
-        {
-            _innerBuilder = webApplicationBuilder ?? throw new ArgumentNullException(nameof(webApplicationBuilder));
-            _settings = settings ?? throw new ArgumentNullException(nameof(settings));
-
-            _innerBuilder.AddTelegratorWeb(settings, null, handlers);
-        }
-
-        /// <summary>
-        /// Builds the host.
-        /// </summary>
-        /// <returns></returns>
-        public TelegramBotWebHost Build()
-        {
-            TelegramBotWebHost host = new TelegramBotWebHost(_innerBuilder);
-            host.UseTelegrator();
-            return host;
-        }
+    /// <inheritdoc/>
+    public void ConfigureContainer<TContainerBuilder>(IServiceProviderFactory<TContainerBuilder> factory, Action<TContainerBuilder>? configure = null) where TContainerBuilder : notnull
+    {
+        ((IHostApplicationBuilder)_innerBuilder).ConfigureContainer(factory, configure);
     }
 }

src/Telegrator.Hosting.Web/Hosting.Web/WebhookerOptions.cs

@@ -1,35 +1,34 @@
 using System.Diagnostics.CodeAnalysis;
 
-namespace Telegrator.Hosting.Web
+namespace Telegrator.Hosting.Web;
+
+/// <summary>
+/// Configuration options for Telegram bot behavior and execution settings.
+/// Controls various aspects of bot operation including concurrency, routing, webhook receiving, and execution policies.
+/// </summary>
+public class WebhookerOptions
 {
     /// <summary>
-    /// Configuration options for Telegram bot behavior and execution settings.
-    /// Controls various aspects of bot operation including concurrency, routing, webhook receiving, and execution policies.
+    /// Gets or sets HTTPS URL to send updates to. Use an empty string to remove webhook integration
     /// </summary>
-    public class WebhookerOptions
-    {
-        /// <summary>
-        /// Gets or sets HTTPS URL to send updates to. Use an empty string to remove webhook integration
-        /// </summary>
-        [StringSyntax(StringSyntaxAttribute.Uri)]
-        public string WebhookUri { get; set; } = string.Empty;
+    [StringSyntax(StringSyntaxAttribute.Uri)]
+    public string WebhookUri { get; set; } = string.Empty;
 
-        /// <summary>
-        /// A secret token to be sent in a header “X-Telegram-Bot-Api-Secret-Token” in every webhook request, 1-256 characters.
-        /// Only characters A-Z, a-z, 0-9, _ and - are allowed.
-        /// The header is useful to ensure that the request comes from a webhook set by you.
-        /// </summary>
-        public string? SecretToken { get; set; } = null;
+    /// <summary>
+    /// A secret token to be sent in a header “X-Telegram-Bot-Api-Secret-Token” in every webhook request, 1-256 characters.
+    /// Only characters A-Z, a-z, 0-9, _ and - are allowed.
+    /// The header is useful to ensure that the request comes from a webhook set by you.
+    /// </summary>
+    public string? SecretToken { get; set; } = null;
 
-        /// <summary>
-        /// The maximum allowed number of simultaneous HTTPS connections to the webhook for update delivery, 1-100. Defaults to 40.
-        /// Use lower values to limit the load on your bot's server, and higher values to increase your bot's throughput.
-        /// </summary>
-        public int MaxConnections { get; set; } = 40;
+    /// <summary>
+    /// The maximum allowed number of simultaneous HTTPS connections to the webhook for update delivery, 1-100. Defaults to 40.
+    /// Use lower values to limit the load on your bot's server, and higher values to increase your bot's throughput.
+    /// </summary>
+    public int MaxConnections { get; set; } = 40;
 
-        /// <summary>
-        /// Pass true to drop all pending updates
-        /// </summary>
-        public bool DropPendingUpdates { get; set; } = false;
-    }
+    /// <summary>
+    /// Pass true to drop all pending updates
+    /// </summary>
+    public bool DropPendingUpdates { get; set; } = false;
 }

src/Telegrator.Hosting.Web/Mediation/HostedUpdateWebhooker.cs

@@ -10,88 +10,114 @@ using Telegram.Bot.Types;
 using Telegrator.Core;
 using Telegrator.Hosting.Web;
 
-namespace Telegrator.Mediation
+namespace Telegrator.Mediation;
+
+/// <summary>
+/// Service for receiving updates for Hosted telegram bots via Webhooks
+/// </summary>
+public class HostedUpdateWebhooker : IHostedService
 {
+    private const string SecretTokenHeader = "X-Telegram-Bot-Api-Secret-Token";
+
+    private readonly ITelegramBotClient _botClient;
+    private readonly IUpdateRouter _updateRouter;
+    private readonly WebhookerOptions _options;
+
     /// <summary>
-    /// Service for receiving updates for Hosted telegram bots via Webhooks
+    /// Initiallizes new instance of <see cref="HostedUpdateWebhooker"/>
     /// </summary>
-    public class HostedUpdateWebhooker : IHostedService
+    /// <param name="botClient"></param>
+    /// <param name="updateRouter"></param>
+    /// <param name="options"></param>
+    /// <exception cref="ArgumentNullException"></exception>
+    public HostedUpdateWebhooker(ITelegramBotClient botClient, IUpdateRouter updateRouter, IOptions<WebhookerOptions> options)
     {
-        private const string SecretTokenHeader = "X-Telegram-Bot-Api-Secret-Token";
+        if (string.IsNullOrEmpty(options.Value.WebhookUri))
+            throw new ArgumentNullException(nameof(options), "Option \"WebhookUrl\" must be set to subscribe for update recieving");
 
-        private readonly IEndpointRouteBuilder _botHost;
-        private readonly ITelegramBotClient _botClient;
-        private readonly IUpdateRouter _updateRouter;
-        private readonly WebhookerOptions _options;
+        _botClient = botClient;
+        _updateRouter = updateRouter;
+        _options = options.Value;
+    }
 
-        /// <summary>
-        /// Initiallizes new instance of <see cref="HostedUpdateWebhooker"/>
-        /// </summary>
-        /// <param name="botHost"></param>
-        /// <param name="botClient"></param>
-        /// <param name="updateRouter"></param>
-        /// <param name="options"></param>
-        /// <exception cref="ArgumentNullException"></exception>
-        public HostedUpdateWebhooker(IEndpointRouteBuilder botHost, ITelegramBotClient botClient, IUpdateRouter updateRouter, IOptions<WebhookerOptions> options)
+    /// <inheritdoc/>
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        StartInternal(cancellationToken);
+        return Task.CompletedTask;
+    }
+
+    /// <inheritdoc/>
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        _botClient.DeleteWebhook(_options.DropPendingUpdates, cancellationToken);
+        return Task.CompletedTask;
+    }
+
+    /// <summary>
+    /// Allows to remap receiving webhook endpoint and map new route to webhost.
+    /// </summary>
+    /// <param name="routeBuilder"></param>
+    /// <param name="webhookUri"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    /// <exception cref="ArgumentException"></exception>
+    public async Task RemapWebhook(IEndpointRouteBuilder routeBuilder, string webhookUri, CancellationToken cancellationToken = default)
+    {
+        if (!Uri.TryCreate(webhookUri, UriKind.Absolute, out Uri? result))
+            throw new ArgumentException("invalid URL");
+
+        _options.WebhookUri = result.ToString();
+        await SetWebhook(cancellationToken);
+        MapWebhook(routeBuilder);
+    }
+
+    /// <summary>
+    /// Maps bot webhook to application builder
+    /// </summary>
+    /// <param name="routeBuilder"></param>
+    internal void MapWebhook(IEndpointRouteBuilder routeBuilder)
+    {
+        string pattern = new UriBuilder(_options.WebhookUri).Path;
+        routeBuilder.MapPost(pattern, (Delegate)ReceiveUpdate);
+    }
+
+    private async void StartInternal(CancellationToken cancellationToken)
+    {
+        await SetWebhook(cancellationToken);
+    }
+
+    private async Task SetWebhook(CancellationToken cancellationToken)
+    {
+        await _botClient.SetWebhook(
+            url: _options.WebhookUri,
+            maxConnections: _options.MaxConnections,
+            allowedUpdates: _updateRouter.HandlersProvider.AllowedTypes,
+            dropPendingUpdates: _options.DropPendingUpdates,
+            secretToken: _options.SecretToken,
+            cancellationToken: cancellationToken);
+    }
+
+    private async Task<IResult> ReceiveUpdate(HttpContext ctx)
+    {
+        if (_options.SecretToken != null)
         {
-            if (string.IsNullOrEmpty(options.Value.WebhookUri))
-                throw new ArgumentNullException(nameof(options), "Option \"WebhookUrl\" must be set to subscribe for update recieving");
-
-            _botHost = botHost;
-            _botClient = botClient;
-            _updateRouter = updateRouter;
-            _options = options.Value;
-        }
-
-        /// <inheritdoc/>
-        public Task StartAsync(CancellationToken cancellationToken)
-        {
-            StartInternal(cancellationToken);
-            return Task.CompletedTask;
-        }
-
-        private async void StartInternal(CancellationToken cancellationToken)
-        {
-            string pattern = new UriBuilder(_options.WebhookUri).Path;
-            _botHost.MapPost(pattern, (Delegate)ReceiveUpdate);
-
-            await _botClient.SetWebhook(
-                url: _options.WebhookUri,
-                maxConnections: _options.MaxConnections,
-                allowedUpdates: _updateRouter.HandlersProvider.AllowedTypes,
-                dropPendingUpdates: _options.DropPendingUpdates,
-                secretToken: _options.SecretToken,
-                cancellationToken: cancellationToken);
-        }
-
-        /// <inheritdoc/>
-        public Task StopAsync(CancellationToken cancellationToken)
-        {
-            _botClient.DeleteWebhook(_options.DropPendingUpdates, cancellationToken);
-            return Task.CompletedTask;
-        }
-
-        private async Task<IResult> ReceiveUpdate(HttpContext ctx)
-        {
-            if (_options.SecretToken != null)
-            {
-                if (!ctx.Request.Headers.TryGetValue(SecretTokenHeader, out StringValues strings))
-                    return Results.BadRequest();
-
-                string? secret = strings.SingleOrDefault();
-                if (secret == null)
-                    return Results.BadRequest();
-
-                if (_options.SecretToken != secret)
-                    return Results.StatusCode(401);
-            }
-
-            Update? update = await JsonSerializer.DeserializeAsync<Update>(ctx.Request.Body, JsonBotAPI.Options, ctx.RequestAborted);
-            if (update is not { Id: > 0 })
+            if (!ctx.Request.Headers.TryGetValue(SecretTokenHeader, out StringValues strings))
                 return Results.BadRequest();
 
-            await _updateRouter.HandleUpdateAsync(_botClient, update, ctx.RequestAborted);
-            return Results.Ok();
+            string? secret = strings.SingleOrDefault();
+            if (secret == null)
+                return Results.BadRequest();
+
+            if (_options.SecretToken != secret)
+                return Results.StatusCode(401);
         }
+
+        Update? update = await JsonSerializer.DeserializeAsync<Update>(ctx.Request.Body, JsonBotAPI.Options, ctx.RequestAborted);
+        if (update is not { Id: > 0 })
+            return Results.BadRequest();
+
+        await _updateRouter.HandleUpdateAsync(_botClient, update, ctx.RequestAborted);
+        return Results.Ok();
     }
 }

src/Telegrator.Hosting.Web/Program.cs

@@ -0,0 +1,85 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
+using Telegrator.Hosting;
+using Telegrator.Hosting.Web;
+
+namespace Telegrator;
+
+internal class Program
+{
+    public static void TelegramBotWebHostBuilder_Example(string[] args)
+    {
+        TelegramBotWebHostBuilder builder = TelegramBotWebHost.CreateBuilder(new WebApplicationOptions()
+        {
+            Args = args,
+            ApplicationName = "TelegramBotWebHost example",
+        });
+
+        builder.Handlers
+            .CollectHandlersAssemblyWide();
+
+        builder.Build()
+            .AddLoggingAdapter()
+            .SetBotCommands()
+            .Run();
+    }
+
+    public static void WebApplicationBuilder_Example(string[] args)
+    {
+        WebApplicationBuilder builder = WebApplication.CreateBuilder(new WebApplicationOptions()
+        {
+            Args = args,
+            ApplicationName = "WebApplication example",
+        });
+
+        builder.AddTelegratorWeb(action: builder => builder.Handlers
+            .CollectHandlersAssemblyWide());
+        
+        builder.Build()
+            .UseTelegratorWeb(dontMap: true)
+            .RemapWebhook("https://awesome-butt-sex.cloudpub.ru/")
+            .AddLoggingAdapter()
+            .SetBotCommands()
+            .Run();
+    }
+
+    public static void TelegramBotHostBuilder_Example(string[] args)
+    {
+        ConfigurationManager configuration = new ConfigurationManager();
+        configuration.AddJsonFile("appsettings.json");
+
+        TelegramBotHostBuilder builder = TelegramBotHost.CreateBuilder(new HostApplicationBuilderSettings()
+        {
+            Args = args,
+            ApplicationName = "TelegramBotHost example",
+            Configuration = configuration
+        });
+
+        builder.Handlers
+            .CollectHandlersAssemblyWide();
+
+        builder.Build()
+            .AddLoggingAdapter()
+            .SetBotCommands()
+            .Run();
+    }
+
+    public static void HostApplicationBuilder_Example(string[] args)
+    {
+        HostApplicationBuilder builder = Host.CreateApplicationBuilder(new HostApplicationBuilderSettings()
+        {
+            Args = args,
+            ApplicationName = "Host example",
+        });
+
+        builder.AddTelegrator(action: builder => builder.Handlers
+            .CollectHandlersAssemblyWide());
+
+        builder.Build()
+            .UseTelegrator()
+            .AddLoggingAdapter()
+            .SetBotCommands()
+            .Run();
+    }
+}

src/Telegrator.Hosting.Web/README.md

@@ -16,8 +16,9 @@
 ---
 
 ## Requirements
-- .NET 8.0 or later
+- .NET 10.0 or later
 - ASP.NET Core
+- [Telegrator.Hosting](https://github.com/Rikitav/Telegrator)
 
 ---
 
@@ -37,10 +38,10 @@ using Telegrator.Hosting;
 using Telegrator.Hosting.Web;
 
 // Creating builder
-TelegramBotWebHostBuilder builder = TelegramBotWebHost.CreateBuilder(new TelegramBotWebOptions()
+TelegramBotWebHostBuilder builder = TelegramBotWebHost.CreateBuilder(new WebApplicationOptions()
 {
     Args = args,
-    ExceptIntersectingCommandAliases = true
+    ApplicationName = "TelegramBotWebHost example",
 });
 
 // Register handlers
@@ -57,27 +58,59 @@ telegramBot.Run();
 
 ---
 
+## Application integration Example
+
+**Program.cs (ASP.NET Core):**
+```csharp
+using Telegrator.Hosting;
+using Telegrator.Hosting.Web;
+
+// Creating builder
+WebApplicationBuilder builder = WebApplication.CreateBuilder(new WebApplicationOptions()
+{
+    Args = args,
+    ApplicationName = "WebApplication example",
+});
+
+// Adding Telegrator
+builder.AddTelegratorWeb();
+
+// Register handlers
+builder.Handlers.CollectHandlersAssemblyWide();
+
+// Register your services
+builder.Services.AddSingleton<IMyService, MyService>();
+
+// Building and running application
+builder.Build()
+    .UseTelegratorWeb()
+    .SetBotCommands();
+    .Run();
+```
+
+---
+
 ## Configuration (appsettings.json)
 
 ```json
 {
-  "TelegramBotClientOptions": {
-    "Token": "YOUR_BOT_TOKEN"
+  "TelegratorOptions": {
+    "Token": "YOUR_BOT_TOKEN",
+    "ExceptIntersectingCommandAliases": true
   }
 
-  "TelegratorWebOptions": {
+  "WebhookerOptioons": {
     "WebhookUri" = "https://you-public-host.ru/bot",
+    "SecretToken": "MEDIC_GAMING"
     "DropPendingUpdates": true
   }
 }
 ```
 
-- `TelegramBotClientOptions`: Bot token and client settings
-
 ---
 
 ## Documentation
-- [Telegrator Main Docs](https://github.com/Rikitav/Telegrator)
+- [Telegrator Main Repository](https://github.com/Rikitav/Telegrator)
 - [Getting Started Guide](https://github.com/Rikitav/Telegrator/wiki/Getting-started)
 - [Annotation Overview](https://github.com/Rikitav/Telegrator/wiki/Annotation-overview)
 

src/Telegrator.Hosting.Web/Telegrator.Hosting.Web.csproj

@@ -15,7 +15,7 @@
     <EnforceCodeStyleInBuild>True</EnforceCodeStyleInBuild>
 	  
     <Title>Telegrator.Hosting.Web</Title>
-    <Version>1.16.0</Version>
+    <Version>1.16.9</Version>
 	<Authors>Rikitav Tim4ik</Authors>
     <Company>Rikitav Tim4ik</Company>
     <RepositoryUrl>https://github.com/Rikitav/Telegrator</RepositoryUrl>
@@ -25,22 +25,19 @@
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
   </PropertyGroup>
-
-  <ItemGroup>
-    <None Include="..\..\LICENSE" Pack="True" PackagePath="\" />
-    <None Include="..\..\README.md" Pack="True" PackagePath="\" />
-    <None Include="..\..\resources\telegrator_nuget.png" Pack="True" PackagePath="\" />
-  </ItemGroup>
   
   <ItemGroup>
     <ProjectReference Include="..\Telegrator.Hosting\Telegrator.Hosting.csproj" />
   </ItemGroup>
-
+	
   <ItemGroup>
 	<FrameworkReference Include="Microsoft.AspNetCore.App" />
+	<PackageReference Include="Telegram.Bot.AspNetCore" Version="22.5.0" />
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Telegram.Bot.AspNetCore" Version="22.5.0" />
+    <None Include=".\README.md" Pack="True" PackagePath="\" />
+    <None Include="..\..\LICENSE" Pack="True" PackagePath="\" />
+    <None Include="..\..\resources\telegrator_nuget.png" Pack="True" PackagePath="\" />
   </ItemGroup>
 </Project>

src/Telegrator.Hosting.Web/TypesExtensions.cs

@@ -1,12 +1,15 @@
 using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Routing;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using System.Diagnostics.CodeAnalysis;
 using Telegram.Bot;
 using Telegrator.Core;
+using Telegrator.Hosting;
 using Telegrator.Hosting.Web;
 using Telegrator.Mediation;
 using Telegrator.Providers;
@@ -24,31 +27,34 @@ namespace Telegrator
         /// </summary>
         public const string HandlersCollectionPropertyKey = nameof(IHandlersCollection);
 
-        extension(WebApplicationBuilder builder)
+        /// <summary>
+        /// Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
+        /// </summary>
+        public static ITelegramBotHostBuilder AddTelegratorWeb(this ITelegramBotHostBuilder builder, TelegratorOptions? options = null, IHandlersCollection? handlers = null, Action<ITelegramBotHostBuilder>? action = null)
         {
-            /// <summary>
-            /// Gets the <see cref="IHandlersCollection"/> from the builder properties.
-            /// </summary>
-            public IHandlersCollection Handlers
-            {
-                get
-                {
-                    return (IHandlersCollection)builder.Host.Properties[HandlersCollectionPropertyKey];
-                }
-            }
+            AddTelegratorWebInternal(builder.Services, builder.Configuration, builder.Properties, ref handlers, options);
+            if (builder is TelegramBotWebHostBuilder telegramBotHostBuilder)
+                telegramBotHostBuilder._handlers = handlers;
+
+            action?.Invoke(builder);
+            return builder;
         }
 
         /// <summary>
         /// Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
         /// </summary>
-        public static IHostApplicationBuilder AddTelegratorWeb(this IHostApplicationBuilder builder, WebApplicationOptions settings, TelegratorOptions? options = null, IHandlersCollection? handlers = null)
+        public static IHostApplicationBuilder AddTelegratorWeb(this WebApplicationBuilder builder, TelegratorOptions? options = null, IHandlersCollection? handlers = null, Action<ITelegramBotHostBuilder>? action = null)
         {
-            if (settings is null)
-                throw new ArgumentNullException(nameof(settings));
-
-            IServiceCollection services = builder.Services;
-            IConfigurationManager configuration = builder.Configuration;
+            AddTelegratorWebInternal(builder.Services, builder.Configuration, ((IHostApplicationBuilder)builder).Properties, ref handlers, options);
+            action?.Invoke(new TelegramBotWebHostBuilder(builder, handlers));
+            return builder;
+        }
 
+        /// <summary>
+        /// Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
+        /// </summary>
+        internal static void AddTelegratorWebInternal(IServiceCollection services, IConfiguration configuration, IDictionary<object, object> properties, [NotNull] ref IHandlersCollection? handlers, TelegratorOptions? options = null)
+        {
             if (options == null)
             {
                 options = configuration.GetSection(nameof(TelegratorOptions)).Get<TelegratorOptions>();
@@ -73,10 +79,7 @@ namespace Telegrator
 
             handlers ??= new HostHandlersCollection(services, options);
             services.AddSingleton(handlers);
-
-            builder.Properties.Add(HandlersCollectionPropertyKey, handlers);
-            if (builder is TelegramBotWebHostBuilder botHostBuilder)
-                botHostBuilder._handlers = handlers;
+            properties.Add(HandlersCollectionPropertyKey, handlers);
 
             if (!services.Any(srvc => srvc.ImplementationType == typeof(IOptions<WebhookerOptions>)))
             {
@@ -98,18 +101,32 @@ namespace Telegrator
 
             services.AddTelegramBotHostDefaults();
             services.AddTelegramWebhook();
-            return builder;
+        }
+
+        /// <summary>
+        /// Searchs for <see cref="HostedUpdateWebhooker"/> hosted service inside hosts services
+        /// </summary>
+        /// <param name="services"></param>
+        /// <param name="webhooker"></param>
+        /// <returns></returns>
+        public static bool TryFindWebhooker(this IServiceProvider services, [NotNullWhen(true)] out HostedUpdateWebhooker? webhooker)
+        {
+            webhooker = services.GetServices<IHostedService>().FirstOrDefault(s => s is HostedUpdateWebhooker) as HostedUpdateWebhooker;
+            return webhooker != null;
         }
 
         /// <summary>
         /// Replaces the initialization logic from TelegramBotWebHost constructor. 
         /// Initializes the bot and logs handlers on application startup.
         /// </summary>
-        public static WebApplication UseTelegratorWeb(this WebApplication app)
+        public static T UseTelegratorWeb<T>(this T app, bool dontMap = false) where T : IEndpointRouteBuilder, IHost
         {
-            ITelegramBotInfo info = app.Services.GetRequiredService<ITelegramBotInfo>();
-            IHandlersCollection handlers = app.Services.GetRequiredService<IHandlersCollection>();
-            ILoggerFactory loggerFactory = app.Services.GetRequiredService<ILoggerFactory>();
+            if (!app.ServiceProvider.TryFindWebhooker(out HostedUpdateWebhooker? webhooker))
+                throw new InvalidOperationException("No service for type 'Telegrator.Mediation.HostedUpdateWebhooker' has been registered.");
+
+            ITelegramBotInfo info = app.ServiceProvider.GetRequiredService<ITelegramBotInfo>();
+            IHandlersCollection handlers = app.ServiceProvider.GetRequiredService<IHandlersCollection>();
+            ILoggerFactory loggerFactory = app.ServiceProvider.GetRequiredService<ILoggerFactory>();
             ILogger logger = loggerFactory.CreateLogger("Telegrator.Hosting.Web.TelegratorHost");
 
             if (logger.IsEnabled(LogLevel.Information))
@@ -119,6 +136,25 @@ namespace Telegrator
                 logger.LogHandlers(handlers);
             }
 
+            if (!dontMap)
+                webhooker.MapWebhook(app);
+            
+            return app;
+        }
+
+        /// <summary>
+        /// Allows to remap receiving webhook endpoint and map new route to webhost.
+        /// </summary>
+        /// <param name="app"></param>
+        /// <param name="webhookUri"></param>
+        /// <returns></returns>
+        /// <exception cref="ArgumentException"></exception>
+        public static T RemapWebhook<T>(this T app, string webhookUri) where T : IEndpointRouteBuilder, IHost
+        {
+            if (!app.ServiceProvider.TryFindWebhooker(out HostedUpdateWebhooker? webhooker))
+                throw new InvalidOperationException("No service for type 'Telegrator.Mediation.HostedUpdateWebhooker' has been registered.");
+
+            webhooker.RemapWebhook(app, webhookUri, default).GetAwaiter().GetResult();
             return app;
         }
 

src/Telegrator.Hosting/GlobalSuppressions.cs

@@ -9,3 +9,4 @@ using System.Diagnostics.CodeAnalysis;
 [assembly: SuppressMessage("Style", "IDE0090")]
 [assembly: SuppressMessage("Usage", "CA2254")]
 [assembly: SuppressMessage("Maintainability", "CA1510")]
+[assembly: SuppressMessage("Style", "IDE0270")]

src/Telegrator.Hosting/Hosting/HostedTelegramBotInfo.cs

@@ -3,28 +3,27 @@ using Telegram.Bot;
 using Telegram.Bot.Types;
 using Telegrator.Core;
 
-namespace Telegrator.Hosting
-{
-    /// <summary>
-    /// Implementation of <see cref="ITelegramBotInfo"/> that provides bot information.
-    /// Contains metadata about the Telegram bot including user details and service provider for wider filterring abilities
-    /// </summary>
-    /// <param name="client"></param>
-    /// <param name="services"></param>
-    /// <param name="configuration"></param>
-    public class HostedTelegramBotInfo(ITelegramBotClient client, IServiceProvider services, IConfigurationManager configuration) : ITelegramBotInfo
-    {
-        /// <inheritdoc/>
-        public User User { get; } = client.GetMe().Result;
-        
-        /// <summary>
-        /// Provides access to services of this Hosted telegram bot
-        /// </summary>
-        public IServiceProvider Services { get; } = services;
+namespace Telegrator.Hosting;
 
-        /// <summary>
-        /// Provides access to configuration of this Hosted telegram bot
-        /// </summary>
-        public IConfigurationManager Configuration { get; } = configuration;
-    }
+/// <summary>
+/// Implementation of <see cref="ITelegramBotInfo"/> that provides bot information.
+/// Contains metadata about the Telegram bot including user details and service provider for wider filterring abilities
+/// </summary>
+/// <param name="client"></param>
+/// <param name="services"></param>
+/// <param name="configuration"></param>
+public class HostedTelegramBotInfo(ITelegramBotClient client, IServiceProvider services, IConfiguration configuration) : ITelegramBotInfo
+{
+    /// <inheritdoc/>
+    public User User { get; } = client.GetMe().Result;
+    
+    /// <summary>
+    /// Provides access to services of this Hosted telegram bot
+    /// </summary>
+    public IServiceProvider Services { get; } = services;
+
+    /// <summary>
+    /// Provides access to configuration of this Hosted telegram bot
+    /// </summary>
+    public IConfiguration Configuration { get; } = configuration;
 }

src/Telegrator.Hosting/Hosting/ITelegramBotHostBuilder.cs

@@ -1,29 +1,12 @@
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Hosting;
 using Telegrator.Core;
 
-namespace Telegrator.Hosting
+namespace Telegrator.Hosting;
+
+/// <summary>
+/// Represents a hosted telegram bots and services builder that helps manage configuration, logging, lifetime, and more.
+/// </summary>
+public interface ITelegramBotHostBuilder : IHostApplicationBuilder, ICollectingProvider
 {
-    /// <summary>
-    /// Interface for building Telegram bot hosts with dependency injection support.
-    /// Combines host application building capabilities with handler collection functionality.
-    /// </summary>
-    public interface ITelegramBotHostBuilder : ICollectingProvider
-    {
-        /// <summary>
-        /// Gets the set of key/value configuration properties.
-        /// </summary>
-        IConfigurationManager Configuration { get; }
 
-        /// <summary>
-        /// Gets a collection of logging providers for the application to compose. This is useful for adding new logging providers.
-        /// </summary>
-        ILoggingBuilder Logging { get; }
-
-        /// <summary>
-        /// Gets a collection of services for the application to compose. This is useful for adding user provided or framework provided services.
-        /// </summary>
-        IServiceCollection Services { get; }
-    }
 }

src/Telegrator.Hosting/Hosting/TelegramBotHost.cs

@@ -1,125 +1,114 @@
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Telegrator.Core;
 
-namespace Telegrator.Hosting
+namespace Telegrator.Hosting;
+
+/// <summary>
+/// Represents a hosted telegram bot
+/// </summary>
+public class TelegramBotHost : IHost, ITelegratorBot
 {
+    private readonly IHost _innerHost;
+    private readonly IUpdateRouter _updateRouter;
+    private readonly ILogger<TelegramBotHost> _logger;
+
+    private bool _disposed;
+
+    /// <inheritdoc/>
+    public IServiceProvider Services => _innerHost.Services;
+
+    /// <inheritdoc/>
+    public IUpdateRouter UpdateRouter => _updateRouter;
+
     /// <summary>
-    /// Represents a hosted telegram bot
+    /// This application's logger
     /// </summary>
-    public class TelegramBotHost : IHost, ITelegratorBot
+    public ILogger<TelegramBotHost> Logger => _logger;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TelegramBotHost"/> class.
+    /// </summary>
+    /// <param name="hostApplicationBuilder">The proxied instance of host builder.</param>
+    public TelegramBotHost(HostApplicationBuilder hostApplicationBuilder)
     {
-        private readonly IHost _innerHost;
-        private readonly IServiceProvider _serviceProvider;
-        private readonly IUpdateRouter _updateRouter;
-        private readonly ILogger<TelegramBotHost> _logger;
+        // Registering this host in services for easy access
+        hostApplicationBuilder.Services.AddSingleton<ITelegratorBot>(this);
 
-        private bool _disposed;
+        // Building proxy hoster
+        _innerHost = hostApplicationBuilder.Build();
 
-        /// <inheritdoc/>
-        public IServiceProvider Services => _serviceProvider;
+        // Reruesting services for this host
+        _updateRouter = Services.GetRequiredService<IUpdateRouter>();
+        _logger = Services.GetRequiredService<ILogger<TelegramBotHost>>();
+    }
 
-        /// <inheritdoc/>
-        public IUpdateRouter UpdateRouter => _updateRouter;
+    /// <summary>
+    /// Creates new <see cref="TelegramBotHostBuilder"/> with default configuration, services and long-polling update receiving scheme
+    /// </summary>
+    /// <returns></returns>
+    public static TelegramBotHostBuilder CreateBuilder()
+    {
+        HostApplicationBuilder innerBuilder = new HostApplicationBuilder(settings: null);
+        TelegramBotHostBuilder builder = new TelegramBotHostBuilder(innerBuilder);
+        return builder;
+    }
 
-        /// <summary>
-        /// This application's logger
-        /// </summary>
-        public ILogger<TelegramBotHost> Logger => _logger;
+    /// <summary>
+    /// Creates new <see cref="TelegramBotHostBuilder"/> with default services and long-polling update receiving scheme
+    /// </summary>
+    /// <returns></returns>
+    public static TelegramBotHostBuilder CreateBuilder(HostApplicationBuilderSettings? settings)
+    {
+        HostApplicationBuilder innerBuilder = new HostApplicationBuilder(settings);
+        TelegramBotHostBuilder builder = new TelegramBotHostBuilder(innerBuilder);
+        return builder;
+    }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="TelegramBotHost"/> class.
-        /// </summary>
-        /// <param name="hostApplicationBuilder">The proxied instance of host builder.</param>
-        public TelegramBotHost(HostApplicationBuilder hostApplicationBuilder)
-        {
-            // Registering this host in services for easy access
-            hostApplicationBuilder.Services.AddSingleton<ITelegratorBot>(this);
+    /// <summary>
+    /// Creates new EMPTY <see cref="TelegramBotHostBuilder"/> WITHOUT any services or update receiving schemes
+    /// </summary>
+    /// <returns></returns>
+    public static TelegramBotHostBuilder CreateEmptyBuilder()
+    {
+        HostApplicationBuilder innerBuilder = Host.CreateEmptyApplicationBuilder(null);
+        return new TelegramBotHostBuilder(innerBuilder);
+    }
 
-            // Building proxy hoster
-            _innerHost = hostApplicationBuilder.Build();
-            _serviceProvider = _innerHost.Services;
-            _innerHost.UseTelegrator();
+    /// <summary>
+    /// Creates new EMPTY <see cref="TelegramBotHostBuilder"/> WITHOUT any services or update receiving schemes
+    /// </summary>
+    /// <returns></returns>
+    public static TelegramBotHostBuilder CreateEmptyBuilder(HostApplicationBuilderSettings? settings)
+    {
+        HostApplicationBuilder innerBuilder = Host.CreateEmptyApplicationBuilder(settings);
+        return new TelegramBotHostBuilder(innerBuilder);
+    }
 
-            // Reruesting services for this host
-            _updateRouter = Services.GetRequiredService<IUpdateRouter>();
-            _logger = Services.GetRequiredService<ILogger<TelegramBotHost>>();
-        }
+    /// <inheritdoc/>
+    public async Task StartAsync(CancellationToken cancellationToken = default)
+    {
+        await _innerHost.StartAsync(cancellationToken);
+    }
 
-        /// <summary>
-        /// Creates new <see cref="TelegramBotHostBuilder"/> with default configuration, services and long-polling update receiving scheme
-        /// </summary>
-        /// <returns></returns>
-        public static TelegramBotHostBuilder CreateBuilder()
-        {
-            HostApplicationBuilder innerBuilder = new HostApplicationBuilder(settings: null);
-            TelegramBotHostBuilder builder = new TelegramBotHostBuilder(innerBuilder, null);
+    /// <inheritdoc/>
+    public async Task StopAsync(CancellationToken cancellationToken = default)
+    {
+        await _innerHost.StopAsync(cancellationToken);
+    }
 
-            builder.Services.AddTelegramBotHostDefaults();
-            builder.Services.AddTelegramReceiver();
-            return builder;
-        }
+    /// <summary>
+    /// Disposes the host.
+    /// </summary>
+    public void Dispose()
+    {
+        if (_disposed)
+            return;
 
-        /// <summary>
-        /// Creates new <see cref="TelegramBotHostBuilder"/> with default services and long-polling update receiving scheme
-        /// </summary>
-        /// <returns></returns>
-        public static TelegramBotHostBuilder CreateBuilder(HostApplicationBuilderSettings? settings)
-        {
-            HostApplicationBuilder innerBuilder = new HostApplicationBuilder(settings);
-            TelegramBotHostBuilder builder = new TelegramBotHostBuilder(innerBuilder, settings);
+        _innerHost.Dispose();
 
-            builder.Services.AddTelegramBotHostDefaults();
-            builder.Services.AddTelegramReceiver();
-            return builder;
-        }
-
-        /// <summary>
-        /// Creates new EMPTY <see cref="TelegramBotHostBuilder"/> WITHOUT any services or update receiving schemes
-        /// </summary>
-        /// <returns></returns>
-        public static TelegramBotHostBuilder CreateEmptyBuilder()
-        {
-            HostApplicationBuilder innerBuilder = Host.CreateEmptyApplicationBuilder(null);
-            return new TelegramBotHostBuilder(innerBuilder, null);
-        }
-
-        /// <summary>
-        /// Creates new EMPTY <see cref="TelegramBotHostBuilder"/> WITHOUT any services or update receiving schemes
-        /// </summary>
-        /// <returns></returns>
-        public static TelegramBotHostBuilder CreateEmptyBuilder(HostApplicationBuilderSettings? settings)
-        {
-            HostApplicationBuilder innerBuilder = Host.CreateEmptyApplicationBuilder(null);
-            return new TelegramBotHostBuilder(innerBuilder, settings);
-        }
-
-        /// <inheritdoc/>
-        public async Task StartAsync(CancellationToken cancellationToken = default)
-        {
-            await _innerHost.StartAsync(cancellationToken);
-        }
-
-        /// <inheritdoc/>
-        public async Task StopAsync(CancellationToken cancellationToken = default)
-        {
-            await _innerHost.StopAsync(cancellationToken);
-        }
-
-        /// <summary>
-        /// Disposes the host.
-        /// </summary>
-        public void Dispose()
-        {
-            if (_disposed)
-                return;
-
-            _innerHost.Dispose();
-
-            GC.SuppressFinalize(this);
-            _disposed = true;
-        }
+        GC.SuppressFinalize(this);
+        _disposed = true;
     }
 }

src/Telegrator.Hosting/Hosting/TelegramBotHostBuilder.cs

@@ -1,75 +1,74 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Diagnostics.Metrics;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Telegrator.Core;
-using Telegrator.Providers;
 
 #pragma warning disable IDE0001
-namespace Telegrator.Hosting
+namespace Telegrator.Hosting;
+
+/// <inheritdoc/>
+public class TelegramBotHostBuilder : ITelegramBotHostBuilder
 {
+    private readonly HostApplicationBuilder _innerBuilder;
+    internal IHandlersCollection _handlers = null!;
+
+    /// <inheritdoc/>
+    public IHandlersCollection Handlers => _handlers;
+
+    /// <inheritdoc/>
+    public IServiceCollection Services => _innerBuilder.Services;
+
+    /// <inheritdoc/>
+    public IConfigurationManager Configuration => _innerBuilder.Configuration;
+
+    /// <inheritdoc/>
+    public ILoggingBuilder Logging => _innerBuilder.Logging;
+
+    /// <inheritdoc/>
+    public IHostEnvironment Environment => _innerBuilder.Environment;
+
+    /// <inheritdoc/>
+    public IDictionary<object, object> Properties => ((IHostApplicationBuilder)_innerBuilder).Properties;
+
+    /// <inheritdoc/>
+    public IMetricsBuilder Metrics => _innerBuilder.Metrics;
+
     /// <summary>
-    /// Represents a hosted telegram bots and services builder that helps manage configuration, logging, lifetime, and more.
+    /// Initializes a new instance of the <see cref="TelegramBotHostBuilder"/> class.
     /// </summary>
-    public class TelegramBotHostBuilder : ICollectingProvider
+    /// <param name="hostApplicationBuilder"></param>
+    public TelegramBotHostBuilder(HostApplicationBuilder hostApplicationBuilder)
     {
-        private readonly HostApplicationBuilder _innerBuilder;
-        private readonly HostApplicationBuilderSettings _settings;
-        internal IHandlersCollection _handlers = null!;
+        _innerBuilder = hostApplicationBuilder ?? throw new ArgumentNullException(nameof(hostApplicationBuilder));
+    }
 
-        /// <inheritdoc/>
-        public IHandlersCollection Handlers => _handlers;
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TelegramBotHostBuilder"/> class.
+    /// </summary>
+    /// <param name="hostApplicationBuilder"></param>
+    /// <param name="handlers"></param>
+    public TelegramBotHostBuilder(HostApplicationBuilder hostApplicationBuilder, IHandlersCollection handlers)
+    {
+        _innerBuilder = hostApplicationBuilder ?? throw new ArgumentNullException(nameof(hostApplicationBuilder));
+        _handlers = handlers ?? throw new ArgumentNullException(nameof(handlers));
+    }
 
-        /// <inheritdoc/>
-        public IServiceCollection Services => _innerBuilder.Services;
+    /// <summary>
+    /// Builds the host.
+    /// </summary>
+    /// <returns></returns>
+    public TelegramBotHost Build()
+    {
+        TelegramBotHost host = new TelegramBotHost(_innerBuilder);
+        host.UseTelegrator();
+        return host;
+    }
 
-        /// <inheritdoc/>
-        public IConfigurationManager Configuration => _innerBuilder.Configuration;
-
-        /// <inheritdoc/>
-        public ILoggingBuilder Logging => _innerBuilder.Logging;
-
-        /// <inheritdoc/>
-        public IHostEnvironment Environment => _innerBuilder.Environment;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="TelegramBotHostBuilder"/> class.
-        /// </summary>
-        /// <param name="hostApplicationBuilder"></param>
-        /// <param name="settings"></param>
-        public TelegramBotHostBuilder(HostApplicationBuilder hostApplicationBuilder, HostApplicationBuilderSettings? settings = null)
-        {
-            _innerBuilder = hostApplicationBuilder ?? throw new ArgumentNullException(nameof(hostApplicationBuilder));
-            _settings = settings ?? new HostApplicationBuilderSettings();
-
-            _innerBuilder.AddTelegrator(_settings);
-            _innerBuilder.Logging.ClearProviders();
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="TelegramBotHostBuilder"/> class.
-        /// </summary>
-        /// <param name="hostApplicationBuilder"></param>
-        /// <param name="handlers"></param>
-        /// <param name="settings"></param>
-        public TelegramBotHostBuilder(HostApplicationBuilder hostApplicationBuilder, IHandlersCollection handlers, HostApplicationBuilderSettings? settings = null)
-        {
-            _innerBuilder = hostApplicationBuilder ?? throw new ArgumentNullException(nameof(hostApplicationBuilder));
-            _settings = settings ?? new HostApplicationBuilderSettings();
-
-            _innerBuilder.AddTelegrator(_settings, null, handlers);
-            _innerBuilder.Logging.ClearProviders();
-        }
-
-        /// <summary>
-        /// Builds the host.
-        /// </summary>
-        /// <returns></returns>
-        public TelegramBotHost Build()
-        {
-            TelegramBotHost host = new TelegramBotHost(_innerBuilder);
-            host.UseTelegrator();
-            return host;
-        }
+    /// <inheritdoc/>
+    public void ConfigureContainer<TContainerBuilder>(IServiceProviderFactory<TContainerBuilder> factory, Action<TContainerBuilder>? configure = null) where TContainerBuilder : notnull
+    {
+        _innerBuilder.ConfigureContainer(factory, configure);
     }
 }

src/Telegrator.Hosting/Logging/MicrosoftLoggingAdapter.cs

@@ -1,45 +1,42 @@
-using Microsoft.Extensions.Logging;
+namespace Telegrator.Logging;
 
-namespace Telegrator.Logging
+/// <summary>
+/// Adapter for Microsoft.Extensions.Logging to work with Telegrator logging system.
+/// This allows seamless integration with ASP.NET Core logging infrastructure.
+/// </summary>
+public class MicrosoftLoggingAdapter : ITelegratorLogger
 {
+    private readonly Microsoft.Extensions.Logging.ILogger _logger;
+
     /// <summary>
-    /// Adapter for Microsoft.Extensions.Logging to work with Telegrator logging system.
-    /// This allows seamless integration with ASP.NET Core logging infrastructure.
+    /// Initializes a new instance of MicrosoftLoggingAdapter.
     /// </summary>
-    public class MicrosoftLoggingAdapter : ITelegratorLogger
+    /// <param name="logger">The Microsoft.Extensions.Logging logger instance.</param>
+    public MicrosoftLoggingAdapter(Microsoft.Extensions.Logging.ILogger logger)
     {
-        private readonly ILogger _logger;
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
 
-        /// <summary>
-        /// Initializes a new instance of MicrosoftLoggingAdapter.
-        /// </summary>
-        /// <param name="logger">The Microsoft.Extensions.Logging logger instance.</param>
-        public MicrosoftLoggingAdapter(ILogger logger)
+    /// <inheritdoc/>
+    public void Log(LogLevel level, string message, Exception? exception = null)
+    {
+        var msLogLevel = level switch
         {
-            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+            LogLevel.Trace => Microsoft.Extensions.Logging.LogLevel.Trace,
+            LogLevel.Debug => Microsoft.Extensions.Logging.LogLevel.Debug,
+            LogLevel.Information => Microsoft.Extensions.Logging.LogLevel.Information,
+            LogLevel.Warning => Microsoft.Extensions.Logging.LogLevel.Warning,
+            LogLevel.Error => Microsoft.Extensions.Logging.LogLevel.Error,
+            _ => Microsoft.Extensions.Logging.LogLevel.Information
+        };
+
+        if (exception != null)
+        {
+            _logger.Log(msLogLevel, default, message, exception, (str, exc) => string.Format("{0} : {1}", str, exc));
         }
-
-        /// <inheritdoc/>
-        public void Log(LogLevel level, string message, Exception? exception = null)
+        else
         {
-            var msLogLevel = level switch
-            {
-                Telegrator.Logging.LogLevel.Trace => Microsoft.Extensions.Logging.LogLevel.Trace,
-                Telegrator.Logging.LogLevel.Debug => Microsoft.Extensions.Logging.LogLevel.Debug,
-                Telegrator.Logging.LogLevel.Information => Microsoft.Extensions.Logging.LogLevel.Information,
-                Telegrator.Logging.LogLevel.Warning => Microsoft.Extensions.Logging.LogLevel.Warning,
-                Telegrator.Logging.LogLevel.Error => Microsoft.Extensions.Logging.LogLevel.Error,
-                _ => Microsoft.Extensions.Logging.LogLevel.Information
-            };
-
-            if (exception != null)
-            {
-                _logger.Log(msLogLevel, default, message, exception, (str, exc) => string.Format("{0} : {1}", str, exc));
-            }
-            else
-            {
-                _logger.Log(msLogLevel, default, message, null, (str, _) => str);
-            }
+            _logger.Log(msLogLevel, default, message, null, (str, _) => str);
         }
     }
-} 
+}

src/Telegrator.Hosting/Polling/HostUpdateHandlersPool.cs

@@ -1,13 +0,0 @@
-using Microsoft.Extensions.Options;
-using Telegrator.Core;
-using Telegrator.Mediation;
-
-namespace Telegrator.Polling
-{
-    /// <inheritdoc/>
-    public class HostUpdateHandlersPool(IUpdateRouter router, IOptions<TelegratorOptions> options)
-        : UpdateHandlersPool(router, options.Value, options.Value.GlobalCancellationToken)
-    {
-
-    }
-}

src/Telegrator.Hosting/Polling/HostUpdateRouter.cs

@@ -4,56 +4,56 @@ using Telegram.Bot;
 using Telegram.Bot.Polling;
 using Telegram.Bot.Types;
 using Telegrator.Core;
+using Telegrator.Core.States;
 using Telegrator.Mediation;
 
-namespace Telegrator.Polling
+namespace Telegrator.Polling;
+
+/// <inheritdoc/>
+public class HostUpdateRouter : UpdateRouter
 {
+    /// <summary>
+    /// <see cref="ILogger"/> of this router
+    /// </summary>
+    protected readonly ILogger<HostUpdateRouter> Logger;
+
     /// <inheritdoc/>
-    public class HostUpdateRouter : UpdateRouter
+    public HostUpdateRouter(
+        IHandlersProvider handlersProvider,
+        IAwaitingProvider awaitingProvider,
+        IStateStorage stateStorage,
+        IOptions<TelegratorOptions> options,
+        ITelegramBotInfo botInfo,
+        ILogger<HostUpdateRouter> logger) : base(handlersProvider, awaitingProvider, stateStorage, options.Value, botInfo)
     {
-        /// <summary>
-        /// <see cref="ILogger"/> of this router
-        /// </summary>
-        protected readonly ILogger<HostUpdateRouter> Logger;
+        Logger = logger;
+        ExceptionHandler = new DefaultRouterExceptionHandler(HandleException);
+    }
 
-        /// <inheritdoc/>
-        public HostUpdateRouter(
-            IHandlersProvider handlersProvider,
-            IAwaitingProvider awaitingProvider,
-            IOptions<TelegratorOptions> options,
-            IUpdateHandlersPool handlersPool,
-            ITelegramBotInfo botInfo,
-            ILogger<HostUpdateRouter> logger) : base(handlersProvider, awaitingProvider, options.Value, handlersPool, botInfo)
+    /// <inheritdoc/>
+    public override Task HandleUpdateAsync(ITelegramBotClient botClient, Update update, CancellationToken cancellationToken)
+    {
+        //Logger.LogInformation("Received update of type \"{type}\"", update.Type);
+        return base.HandleUpdateAsync(botClient, update, cancellationToken);
+    }
+
+    /// <summary>
+    /// Default exception handler of this router
+    /// </summary>
+    /// <param name="botClient"></param>
+    /// <param name="exception"></param>
+    /// <param name="source"></param>
+    /// <param name="cancellationToken"></param>
+    public void HandleException(ITelegramBotClient botClient, Exception exception, HandleErrorSource source, CancellationToken cancellationToken)
+    {
+        if (exception is HandlerFaultedException handlerFaultedException)
         {
-            Logger = logger;
-            ExceptionHandler = new DefaultRouterExceptionHandler(HandleException);
+            Logger.LogError("\"{handler}\" handler's execution was faulted :\n{exception}",
+                handlerFaultedException.HandlerInfo.ToString(),
+                handlerFaultedException.InnerException?.ToString() ?? "No inner exception");
+            return;
         }
 
-        /// <inheritdoc/>
-        public override Task HandleUpdateAsync(ITelegramBotClient botClient, Update update, CancellationToken cancellationToken)
-        {
-            //Logger.LogInformation("Received update of type \"{type}\"", update.Type);
-            return base.HandleUpdateAsync(botClient, update, cancellationToken);
-        }
-
-        /// <summary>
-        /// Default exception handler of this router
-        /// </summary>
-        /// <param name="botClient"></param>
-        /// <param name="exception"></param>
-        /// <param name="source"></param>
-        /// <param name="cancellationToken"></param>
-        public void HandleException(ITelegramBotClient botClient, Exception exception, HandleErrorSource source, CancellationToken cancellationToken)
-        {
-            if (exception is HandlerFaultedException handlerFaultedException)
-            {
-                Logger.LogError("\"{handler}\" handler's execution was faulted :\n{exception}",
-                    handlerFaultedException.HandlerInfo.ToString(),
-                    handlerFaultedException.InnerException?.ToString() ?? "No inner exception");
-                return;
-            }
-
-            Logger.LogError("Exception was thrown during update routing faulted :\n{exception}", exception.ToString());
-        }
+        Logger.LogError("Exception was thrown during update routing faulted :\n{exception}", exception.ToString());
     }
 }

src/Telegrator.Hosting/Polling/HostedUpdateReceiver.cs

@@ -6,27 +6,29 @@ using Telegram.Bot.Polling;
 using Telegrator.Core;
 using Telegrator.Mediation;
 
-namespace Telegrator.Polling
-{
-    /// <summary>
-    /// Service for receiving updates for Hosted telegram bots
-    /// </summary>
-    /// <param name="botClient"></param>
-    /// <param name="updateRouter"></param>
-    /// <param name="options"></param>
-    /// <param name="logger"></param>
-    public class HostedUpdateReceiver(ITelegramBotClient botClient, IUpdateRouter updateRouter, IOptions<ReceiverOptions> options, ILogger<HostedUpdateReceiver> logger) : BackgroundService
-    {
-        private readonly ReceiverOptions _receiverOptions = options.Value;
-        private readonly IUpdateRouter _updateRouter = updateRouter;
+namespace Telegrator.Polling;
 
-        /// <inheritdoc/>
-        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
-        {
-            logger.LogInformation("Starting receiving updates via long-polling");
-            _receiverOptions.AllowedUpdates = _updateRouter.HandlersProvider.AllowedTypes.ToArray();
-            DefaultUpdateReceiver updateReceiver = new DefaultUpdateReceiver(botClient, _receiverOptions);
-            await updateReceiver.ReceiveAsync(_updateRouter, stoppingToken).ConfigureAwait(false);
-        }
+/// <summary>
+/// Service for receiving updates for Hosted telegram bots
+/// </summary>
+/// <param name="botClient"></param>
+/// <param name="updateRouter"></param>
+/// <param name="options"></param>
+/// <param name="logger"></param>
+public class HostedUpdateReceiver(ITelegramBotClient botClient, IUpdateRouter updateRouter, IOptions<ReceiverOptions> options, ILogger<HostedUpdateReceiver> logger) : BackgroundService
+{
+    private readonly ReceiverOptions _receiverOptions = options.Value;
+    private readonly IUpdateRouter _updateRouter = updateRouter;
+
+    /// <inheritdoc/>
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        logger.LogInformation("Starting receiving updates via long-polling");
+        _receiverOptions.AllowedUpdates = _updateRouter.HandlersProvider.AllowedTypes.ToArray();
+
+        botClient.DeleteWebhook(options.Value.DropPendingUpdates).Wait();
+
+        DefaultUpdateReceiver updateReceiver = new DefaultUpdateReceiver(botClient, _receiverOptions);
+        await updateReceiver.ReceiveAsync(_updateRouter, stoppingToken).ConfigureAwait(false);
     }
 }

src/Telegrator.Hosting/Providers/HostAwaitingProvider.cs

@@ -1,11 +1,9 @@
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
+using Microsoft.Extensions.Options;
 
-namespace Telegrator.Providers
+namespace Telegrator.Providers;
+
+/// <inheritdoc/>
+public class HostAwaitingProvider(IOptions<TelegratorOptions> options) : AwaitingProvider(options.Value)
 {
-    /// <inheritdoc/>
-    public class HostAwaitingProvider(IOptions<TelegratorOptions> options, ILogger<HostAwaitingProvider> logger) : AwaitingProvider(options.Value)
-    {
-        private readonly ILogger<HostAwaitingProvider> _logger = logger;
-    }
+
 }

src/Telegrator.Hosting/Providers/HostHandlersCollection.cs

@@ -2,61 +2,60 @@
 using Telegrator.Core;
 using Telegrator.Core.Descriptors;
 
-namespace Telegrator.Providers
+namespace Telegrator.Providers;
+
+/// <inheritdoc/>
+public class HostHandlersCollection(IServiceCollection hostServiceColletion, TelegratorOptions options) : HandlersCollection(options)
 {
+    private readonly IServiceCollection Services = hostServiceColletion;
+
     /// <inheritdoc/>
-    public class HostHandlersCollection(IServiceCollection hostServiceColletion, TelegratorOptions options) : HandlersCollection(options)
+    protected override bool MustHaveParameterlessCtor => false;
+
+    /// <inheritdoc/>
+    public override IHandlersCollection AddDescriptor(HandlerDescriptor descriptor)
     {
-        private readonly IServiceCollection Services = hostServiceColletion;
-
-        /// <inheritdoc/>
-        protected override bool MustHaveParameterlessCtor => false;
-
-        /// <inheritdoc/>
-        public override IHandlersCollection AddDescriptor(HandlerDescriptor descriptor)
+        switch (descriptor.Type)
         {
-            switch (descriptor.Type)
-            {
-                case DescriptorType.General:
-                    {
-                        if (descriptor.InstanceFactory != null)
-                            Services.AddScoped(descriptor.HandlerType, _ => descriptor.InstanceFactory.Invoke());
-                        else
-                            Services.AddScoped(descriptor.HandlerType);
+            case DescriptorType.General:
+                {
+                    if (descriptor.InstanceFactory != null)
+                        Services.AddScoped(descriptor.HandlerType, _ => descriptor.InstanceFactory.Invoke());
+                    else
+                        Services.AddScoped(descriptor.HandlerType);
 
-                        break;
-                    }
+                    break;
+                }
 
-                case DescriptorType.Keyed:
-                    {
-                        if (descriptor.InstanceFactory != null)
-                            Services.AddKeyedScoped(descriptor.HandlerType, descriptor.ServiceKey, (_, _) => descriptor.InstanceFactory.Invoke());
-                        else
-                            Services.AddKeyedScoped(descriptor.HandlerType, descriptor.ServiceKey);
+            case DescriptorType.Keyed:
+                {
+                    if (descriptor.InstanceFactory != null)
+                        Services.AddKeyedScoped(descriptor.HandlerType, descriptor.ServiceKey, (_, _) => descriptor.InstanceFactory.Invoke());
+                    else
+                        Services.AddKeyedScoped(descriptor.HandlerType, descriptor.ServiceKey);
 
-                        break;
-                    }
+                    break;
+                }
 
-                case DescriptorType.Singleton:
-                    {
-                        Services.AddSingleton(descriptor.HandlerType, descriptor.SingletonInstance ?? (descriptor.InstanceFactory != null
-                            ? descriptor.InstanceFactory.Invoke()
-                            : throw new Exception()));
+            case DescriptorType.Singleton:
+                {
+                    Services.AddSingleton(descriptor.HandlerType, descriptor.SingletonInstance ?? (descriptor.InstanceFactory != null
+                        ? descriptor.InstanceFactory.Invoke()
+                        : throw new Exception()));
 
-                        break;
-                    }
+                    break;
+                }
 
-                case DescriptorType.Implicit:
-                    {
-                        Services.AddKeyedSingleton(descriptor.HandlerType, descriptor.ServiceKey, descriptor.SingletonInstance ?? (descriptor.InstanceFactory != null
-                            ? descriptor.InstanceFactory.Invoke()
-                            : throw new Exception()));
-                        
-                        break;
-                    }
-            }
-
-            return base.AddDescriptor(descriptor);
+            case DescriptorType.Implicit:
+                {
+                    Services.AddKeyedSingleton(descriptor.HandlerType, descriptor.ServiceKey, descriptor.SingletonInstance ?? (descriptor.InstanceFactory != null
+                        ? descriptor.InstanceFactory.Invoke()
+                        : throw new Exception()));
+                    
+                    break;
+                }
         }
+
+        return base.AddDescriptor(descriptor);
     }
 }

src/Telegrator.Hosting/Providers/HostHandlersProvider.cs

@@ -1,45 +1,40 @@
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using Telegrator.Core;
 using Telegrator.Core.Descriptors;
 using Telegrator.Core.Handlers;
 
-namespace Telegrator.Providers
+namespace Telegrator.Providers;
+
+/// <inheritdoc/>
+public class HostHandlersProvider : HandlersProvider
 {
+    private readonly IServiceProvider Services;
+
     /// <inheritdoc/>
-    public class HostHandlersProvider : HandlersProvider
+    public HostHandlersProvider(
+        IHandlersCollection handlers,
+        IOptions<TelegratorOptions> options,
+        IServiceProvider serviceProvider) : base(handlers, options.Value)
     {
-        private readonly IServiceProvider Services;
-        private readonly ILogger<HostHandlersProvider> Logger;
+        Services = serviceProvider;
+    }
 
-        /// <inheritdoc/>
-        public HostHandlersProvider(
-            IHandlersCollection handlers,
-            IOptions<TelegratorOptions> options,
-            IServiceProvider serviceProvider,
-            ILogger<HostHandlersProvider> logger) : base(handlers, options.Value)
-        {
-            Services = serviceProvider;
-            Logger = logger;
-        }
+    /// <inheritdoc/>
+    public override UpdateHandlerBase GetHandlerInstance(HandlerDescriptor descriptor, CancellationToken cancellationToken = default)
+    {
+        cancellationToken.ThrowIfCancellationRequested();
+        IServiceScope scope = Services.CreateScope();
 
-        /// <inheritdoc/>
-        public override UpdateHandlerBase GetHandlerInstance(HandlerDescriptor descriptor, CancellationToken cancellationToken = default)
-        {
-            cancellationToken.ThrowIfCancellationRequested();
-            IServiceScope scope = Services.CreateScope();
+        object handlerInstance = descriptor.ServiceKey == null
+            ? scope.ServiceProvider.GetRequiredService(descriptor.HandlerType)
+            : scope.ServiceProvider.GetRequiredKeyedService(descriptor.HandlerType, descriptor.ServiceKey);
 
-            object handlerInstance = descriptor.ServiceKey == null
-                ? scope.ServiceProvider.GetRequiredService(descriptor.HandlerType)
-                : scope.ServiceProvider.GetRequiredKeyedService(descriptor.HandlerType, descriptor.ServiceKey);
+        if (handlerInstance is not UpdateHandlerBase updateHandler)
+            throw new InvalidOperationException("Failed to resolve " + descriptor.HandlerType + " as UpdateHandlerBase");
 
-            if (handlerInstance is not UpdateHandlerBase updateHandler)
-                throw new InvalidOperationException("Failed to resolve " + descriptor.HandlerType + " as UpdateHandlerBase");
-
-            descriptor.LazyInitialization?.Invoke(updateHandler);
-            updateHandler.LifetimeToken.OnLifetimeEnded += _ => scope.Dispose();
-            return updateHandler;
-        }
+        descriptor.LazyInitialization?.Invoke(updateHandler);
+        updateHandler.LifetimeToken.OnLifetimeEnded += _ => scope.Dispose();
+        return updateHandler;
     }
 }

src/Telegrator.Hosting/README.md

@@ -15,7 +15,7 @@
 ---
 
 ## Requirements
-- .NET 8.0 or later
+- .NET 10.0 or later
 - [Telegrator](https://github.com/Rikitav/Telegrator)
 
 ---
@@ -35,10 +35,10 @@ dotnet add package Telegrator.Hosting
 using Telegrator.Hosting;
 
 // Creating builder
-TelegramBotHostBuilder builder = TelegramBotHost.CreateBuilder(new TelegramBotHostBuilderSettings()
+TelegramBotHostBuilder builder = TelegramBotHost.CreateBuilder(new HostApplicationBuilderSettings()
 {
     Args = args,
-    ExceptIntersectingCommandAliases = true
+    ApplicationName = "TelegramBotHost example",
 });
 
 // Registerring handlers
@@ -55,12 +55,42 @@ telegramBot.Run();
 
 ---
 
+## Application integration Example
+
+**Program.cs:**
+```csharp
+using Telegrator.Hosting;
+
+// Creating builder
+HostApplicationBuilder builder = Host.CreateApplicationBuilder(new HostApplicationBuilderSettings()
+{
+    Args = args,
+    ApplicationName = "Host example",
+});
+
+// Adding Telegrator
+builder.AddTelegrator();
+
+// Registerring handlers (extension)
+builder.Handlers.CollectHandlersAssemblyWide();
+
+// Building and running application
+builder.Build()
+    .UseTelegrator()
+    .SetBotCommands()
+    .Run();
+
+```
+
+---
+
 ## Configuration (appsettings.json)
 
 ```json
 {
-  "TelegramBotClientOptions": {
-    "Token": "YOUR_BOT_TOKEN"
+  "TelegratorOptions": {
+    "Token": "YOUR_BOT_TOKEN",
+    "ExceptIntersectingCommandAliases": true
   },
 
   "HostOptions": {

src/Telegrator.Hosting/Telegrator.Hosting.csproj

@@ -15,7 +15,7 @@
     <EnforceCodeStyleInBuild>True</EnforceCodeStyleInBuild>
 	  
     <Title>Telegrator.Hosting</Title>
-    <Version>1.16.0</Version>
+    <Version>1.16.9</Version>
 	<Authors>Rikitav Tim4ik</Authors>
     <Company>Rikitav Tim4ik</Company>
     <RepositoryUrl>https://github.com/Rikitav/Telegrator</RepositoryUrl>
@@ -26,19 +26,19 @@
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.3" />
-    <PackageReference Include="Microsoft.Extensions.Http" Version="10.0.3" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <None Include="..\..\LICENSE" Pack="True" PackagePath="\" />
-    <None Include="..\..\README.md" Pack="True" PackagePath="\" />
-    <None Include="..\..\resources\telegrator_nuget.png" Pack="True" PackagePath="\" />
-  </ItemGroup>
-  
   <ItemGroup>
     <ProjectReference Include="..\Telegrator\Telegrator.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.7" />
+    <PackageReference Include="Microsoft.Extensions.Http" Version="10.0.7" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include=".\README.md" Pack="True" PackagePath="\" />
+    <None Include="..\..\LICENSE" Pack="True" PackagePath="\" />
+    <None Include="..\..\resources\telegrator_nuget.png" Pack="True" PackagePath="\" />
+  </ItemGroup>
+  
 </Project>

src/Telegrator.Hosting/TypesExtensions.cs

@@ -4,6 +4,7 @@ using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using System.Diagnostics.CodeAnalysis;
 using System.Text;
 using Telegram.Bot;
 using Telegram.Bot.Polling;
@@ -11,10 +12,12 @@ using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
 using Telegrator.Core;
 using Telegrator.Core.Descriptors;
+using Telegrator.Core.States;
 using Telegrator.Hosting;
 using Telegrator.Logging;
 using Telegrator.Polling;
 using Telegrator.Providers;
+using Telegrator.States;
 
 namespace Telegrator;
 
@@ -28,34 +31,52 @@ public static class HostBuilderExtensions
     /// </summary>
     public const string HandlersCollectionPropertyKey = nameof(IHandlersCollection);
 
-    extension (IHostApplicationBuilder builder)
+    /// <summary>
+    /// Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
+    /// </summary>
+    public static ITelegramBotHostBuilder AddTelegrator(this ITelegramBotHostBuilder builder, TelegratorOptions? options = null, IHandlersCollection? handlers = null, Action<ITelegramBotHostBuilder>? action = null)
     {
-        /// <summary>
-        /// Gets the <see cref="IHandlersCollection"/> from the builder properties.
-        /// </summary>
-        public IHandlersCollection Handlers
-        {
-            get
-            {
-                if (builder is TelegramBotHostBuilder botHostBuilder)
-                    return botHostBuilder.Handlers;
+        AddTelegratorInternal(builder.Services, builder.Configuration, builder.Properties, ref handlers, options);
+        if (builder is TelegramBotHostBuilder telegramBotHostBuilder)
+            telegramBotHostBuilder._handlers = handlers;
 
-                return (IHandlersCollection)builder.Properties[HandlersCollectionPropertyKey];
-            }
-        }
+        action?.Invoke(builder);
+        return builder;
     }
 
     /// <summary>
-    /// Replaces TelegramBotWebHostBuilder. Configures DI, options, and handlers.
+    /// Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
     /// </summary>
-    public static IHostApplicationBuilder AddTelegrator(this IHostApplicationBuilder builder, HostApplicationBuilderSettings settings, TelegratorOptions? options = null, IHandlersCollection? handlers = null)
+    public static IHostApplicationBuilder AddTelegrator(this HostApplicationBuilder builder, TelegratorOptions? options = null, IHandlersCollection? handlers = null, Action<ITelegramBotHostBuilder>? action = null)
     {
-        if (settings is null)
-            throw new ArgumentNullException(nameof(settings));
+        AddTelegratorInternal(builder.Services, builder.Configuration, ((IHostApplicationBuilder)builder).Properties, ref handlers, options);
+        action?.Invoke(new TelegramBotHostBuilder(builder, handlers));
+        return builder;
+    }
 
-        IServiceCollection services = builder.Services;
-        IConfigurationManager configuration = builder.Configuration;
+    /// <summary>
+    /// Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
+    /// </summary>
+    public static IHostApplicationBuilder AddTelegrator(this IHostApplicationBuilder builder, TelegratorOptions? options = null, IHandlersCollection? handlers = null)
+    {
+        AddTelegratorInternal(builder.Services, builder.Configuration, builder.Properties, ref handlers, options);
+        return builder;
+    }
 
+    /// <summary>
+    /// Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
+    /// </summary>
+    public static IHostBuilder AddTelegrator(this IHostBuilder builder, TelegratorOptions? options = null, IHandlersCollection? handlers = null)
+    {
+        builder.ConfigureServices((ctx, sp) => AddTelegratorInternal(sp, ctx.Configuration, builder.Properties, ref handlers, options));
+        return builder;
+    }
+
+    /// <summary>
+    /// Replaces TelegramBotHostBuilder. Configures DI, options, and handlers.
+    /// </summary>
+    internal static void AddTelegratorInternal(IServiceCollection services, IConfiguration configuration, IDictionary<object, object> properties, [NotNull] ref IHandlersCollection? handlers, TelegratorOptions? options = null)
+    {
         if (options == null)
         {
             options = configuration.GetSection(nameof(TelegratorOptions)).Get<TelegratorOptions>();
@@ -80,10 +101,7 @@ public static class HostBuilderExtensions
 
         handlers ??= new HostHandlersCollection(services, options);
         services.AddSingleton(handlers);
-
-        builder.Properties.Add(HandlersCollectionPropertyKey, handlers);
-        if (builder is TelegramBotHostBuilder botHostBuilder)
-            botHostBuilder._handlers = handlers;
+        properties.Add(HandlersCollectionPropertyKey, handlers);
 
         if (!services.Any(srvc => srvc.ImplementationType == typeof(IOptions<ReceiverOptions>)))
         {
@@ -103,9 +121,8 @@ public static class HostBuilderExtensions
             }));
         }
 
-        services.AddTelegramReceiver();
         services.AddTelegramBotHostDefaults();
-        return builder;
+        services.AddTelegramReceiver();
     }
 }
 
@@ -115,6 +132,18 @@ public static class HostBuilderExtensions
 /// </summary>
 public static class ServicesCollectionExtensions
 {
+    /// <summary>
+    /// Registers <see cref="IStateStorage"/> service
+    /// </summary>
+    /// <typeparam name="TStorage"></typeparam>
+    /// <param name="services"></param>
+    /// <returns></returns>
+    public static IServiceCollection AddStateStorage<TStorage>(this IServiceCollection services) where TStorage : IStateStorage
+    {
+        services.Replace(new ServiceDescriptor(typeof(IStateStorage), typeof(TStorage), ServiceLifetime.Singleton));
+        return services;
+    }
+
     /// <summary>
     /// Registers <see cref="TelegramBotHost"/> default services
     /// </summary>
@@ -122,12 +151,11 @@ public static class ServicesCollectionExtensions
     /// <returns></returns>
     public static IServiceCollection AddTelegramBotHostDefaults(this IServiceCollection services)
     {
-        services.AddLogging(builder => builder.AddConsole().AddDebug());
-        services.AddSingleton<IUpdateHandlersPool, HostUpdateHandlersPool>();
         services.AddSingleton<IAwaitingProvider, HostAwaitingProvider>();
         services.AddSingleton<IHandlersProvider, HostHandlersProvider>();
         services.AddSingleton<IUpdateRouter, HostUpdateRouter>();
         services.AddSingleton<ITelegramBotInfo, HostedTelegramBotInfo>();
+        services.AddSingleton<IStateStorage, DefaultStateStorage>();
 
         return services;
     }

src/Telegrator.Localized/LocalizedMessageHandlerExtensions.cs

@@ -4,14 +4,13 @@ using System.Threading.Tasks;
 using Telegram.Bot.Types;
 using Telegrator.Handlers;
 
-namespace Telegrator.Localized
+namespace Telegrator.Localized;
+
+public static class LocalizedMessageHandlerExtensions
 {
-    public static class LocalizedMessageHandlerExtensions
+    public static async Task<Message> ResponseLocalized(this ILocalizedHandler<Message> localizedHandler, string localizedReplyIdentifier, params IEnumerable<string> formatArgs)
     {
-        public static async Task<Message> ResponseLocalized(this ILocalizedHandler<Message> localizedHandler, string localizedReplyIdentifier, params IEnumerable<string> formatArgs)
-        {
-            LocalizedString localizedString = localizedHandler.LocalizationProvider[localizedReplyIdentifier, formatArgs];
-            return await localizedHandler.Container.Responce(localizedString.Value);
-        }
+        LocalizedString localizedString = localizedHandler.LocalizationProvider[localizedReplyIdentifier, formatArgs];
+        return await localizedHandler.Container.Responce(localizedString.Value);
     }
 }

src/Telegrator.Localized/Telegrator.Localized.csproj

@@ -1,12 +1,12 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFramework>netstandard2.1</TargetFramework>
 	<LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="10.0.2" />
+    <PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="10.0.7" />
   </ItemGroup>
 
   <ItemGroup>

src/Telegrator/Annotations/CallbackQueryAttributes.cs

@@ -4,41 +4,40 @@ using Telegrator.Attributes;
 using Telegrator.Core.Filters;
 using Telegrator.Filters;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Abstract base attribute for filtering callback-based updates.
+/// Supports various message types including regular messages, edited messages, channel posts, and business messages.
+/// </summary>
+/// <param name="filters">The filters to apply to messages</param>
+public abstract class CallbackQueryAttribute(params IFilter<CallbackQuery>[] filters) : UpdateFilterAttribute<CallbackQuery>(filters)
 {
     /// <summary>
-    /// Abstract base attribute for filtering callback-based updates.
-    /// Supports various message types including regular messages, edited messages, channel posts, and business messages.
+    /// Gets the allowed update types that this filter can process.
     /// </summary>
-    /// <param name="filters">The filters to apply to messages</param>
-    public abstract class CallbackQueryAttribute(params IFilter<CallbackQuery>[] filters) : UpdateFilterAttribute<CallbackQuery>(filters)
-    {
-        /// <summary>
-        /// Gets the allowed update types that this filter can process.
-        /// </summary>
-        public override UpdateType[] AllowedTypes => [UpdateType.CallbackQuery];
-
-        /// <summary>
-        /// Extracts the message from various types of updates.
-        /// </summary>
-        /// <param name="update">The Telegram update</param>
-        /// <returns>The message from the update, or null if not present</returns>
-        public override CallbackQuery? GetFilterringTarget(Update update)
-            => update.CallbackQuery;
-    }
+    public override UpdateType[] AllowedTypes => [UpdateType.CallbackQuery];
 
     /// <summary>
-    /// Attribute for filtering <see cref="CallbackQuery"/>'s data
+    /// Extracts the message from various types of updates.
     /// </summary>
-    /// <param name="data"></param>
-    public class CallbackDataAttribute(string data)
-        : CallbackQueryAttribute(new CallbackDataFilter(data))
-    { }
-
-    /// <summary>
-    /// Attribute to check if <see cref="CallbackQuery"/> belongs to a specific message by its ID
-    /// </summary>
-    public class CallbackInlineIdAttribute(string inlineMessageId)
-        : CallbackQueryAttribute(new CallbackInlineIdFilter(inlineMessageId))
-    { }
+    /// <param name="update">The Telegram update</param>
+    /// <returns>The message from the update, or null if not present</returns>
+    public override CallbackQuery? GetFilterringTarget(Update update)
+        => update.CallbackQuery;
 }
+
+/// <summary>
+/// Attribute for filtering <see cref="CallbackQuery"/>'s data
+/// </summary>
+/// <param name="data"></param>
+public class CallbackDataAttribute(string data)
+    : CallbackQueryAttribute(new CallbackDataFilter(data))
+{ }
+
+/// <summary>
+/// Attribute to check if <see cref="CallbackQuery"/> belongs to a specific message by its ID
+/// </summary>
+public class CallbackInlineIdAttribute(string inlineMessageId)
+    : CallbackQueryAttribute(new CallbackInlineIdFilter(inlineMessageId))
+{ }

src/Telegrator/Annotations/CommandAlliasAttribute.cs

@@ -3,58 +3,57 @@ using Telegram.Bot.Types.Enums;
 using Telegrator.Filters;
 using Telegrator.Attributes;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute for filtering messages based on command aliases.
+/// Allows handlers to respond to multiple command variations using a single attribute.
+/// </summary>
+public class CommandAlliasAttribute : UpdateFilterAttribute<Message>
 {
     /// <summary>
-    /// Attribute for filtering messages based on command aliases.
-    /// Allows handlers to respond to multiple command variations using a single attribute.
+    /// Gets the allowed update types for this filter.
     /// </summary>
-    public class CommandAlliasAttribute : UpdateFilterAttribute<Message>
+    public override UpdateType[] AllowedTypes => [UpdateType.Message];
+    
+    /// <summary>
+    /// The description of the command (defaults to "no description provided").
+    /// </summary>
+    private string _description = "no description provided";
+    
+    /// <summary>
+    /// Gets the array of command aliases that this filter will match.
+    /// </summary>
+    public string[] Alliases
     {
-        /// <summary>
-        /// Gets the allowed update types for this filter.
-        /// </summary>
-        public override UpdateType[] AllowedTypes => [UpdateType.Message];
-        
-        /// <summary>
-        /// The description of the command (defaults to "no description provided").
-        /// </summary>
-        private string _description = "no description provided";
-        
-        /// <summary>
-        /// Gets the array of command aliases that this filter will match.
-        /// </summary>
-        public string[] Alliases
-        {
-            get;
-            private set;
-        }
-
-        /// <summary>
-        /// Gets or sets the description of the command.
-        /// Must be between 0 and 256 characters in length.
-        /// </summary>
-        /// <exception cref="ArgumentOutOfRangeException">Thrown when the description length is outside the allowed range.</exception>
-        public string Description
-        {
-            get => _description;
-            set => _description = value is { Length: <= 256 and >= 0 }
-                ? value : throw new ArgumentOutOfRangeException(nameof(value));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the CommandAlliasAttribute with the specified command aliases.
-        /// </summary>
-        /// <param name="alliases">The command aliases to match against.</param>
-        public CommandAlliasAttribute(params string[] alliases)
-            : base(new CommandAlliasFilter(alliases.Select(c => c.TrimStart('/')).ToArray()))
-            => Alliases = alliases.Select(c => c.TrimStart('/')).ToArray();
-
-        /// <summary>
-        /// Gets the filtering target (Message) from the update.
-        /// </summary>
-        /// <param name="update">The Telegram update.</param>
-        /// <returns>The message from the update, or null if not present.</returns>
-        public override Message? GetFilterringTarget(Update update) => update.Message;
+        get;
+        private set;
     }
+
+    /// <summary>
+    /// Gets or sets the description of the command.
+    /// Must be between 0 and 256 characters in length.
+    /// </summary>
+    /// <exception cref="ArgumentOutOfRangeException">Thrown when the description length is outside the allowed range.</exception>
+    public string Description
+    {
+        get => _description;
+        set => _description = value is { Length: <= 256 and >= 0 }
+            ? value : throw new ArgumentOutOfRangeException(nameof(value));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the CommandAlliasAttribute with the specified command aliases.
+    /// </summary>
+    /// <param name="alliases">The command aliases to match against.</param>
+    public CommandAlliasAttribute(params string[] alliases)
+        : base(new CommandAlliasFilter(alliases.Select(c => c.TrimStart('/')).ToArray()))
+        => Alliases = alliases.Select(c => c.TrimStart('/')).ToArray();
+
+    /// <summary>
+    /// Gets the filtering target (Message) from the update.
+    /// </summary>
+    /// <param name="update">The Telegram update.</param>
+    /// <returns>The message from the update, or null if not present.</returns>
+    public override Message? GetFilterringTarget(Update update) => update.Message;
 }

src/Telegrator/Annotations/CommandArgumentAttributes.cs

@@ -1,63 +1,62 @@
 using System.Text.RegularExpressions;
 using Telegrator.Filters;
 
-namespace Telegrator.Annotations
-{
-    /// <summary>
-    /// Attribute for filtering messages where a command has arguments count >= <paramref name="count"/>.
-    /// </summary>
-    /// <param name="count"></param>
-    public class ArgumentCountAttribute(int count)
-        : MessageFilterAttribute(new ArgumentCountFilter(count))
-    { }
+namespace Telegrator.Annotations;
 
-    /// <summary>
-    /// Attribute for filtering messages where a command argument starts with the specified content.
-    /// </summary>
-    /// <param name="content">The content that the command argument should start with.</param>
-    /// <param name="comparison">The string comparison type to use for the check.</param>
-    /// <param name="index">The index of the argument to check (0-based).</param>
-    public class ArgumentStartsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
-        : MessageFilterAttribute(new ArgumentStartsWithFilter(content, comparison, index))
-    { }
+/// <summary>
+/// Attribute for filtering messages where a command has arguments count >= <paramref name="count"/>.
+/// </summary>
+/// <param name="count"></param>
+public class ArgumentCountAttribute(int count)
+    : MessageFilterAttribute(new ArgumentCountFilter(count))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages where a command argument ends with the specified content.
-    /// </summary>
-    /// <param name="content">The content that the command argument should end with.</param>
-    /// <param name="comparison">The string comparison type to use for the check.</param>
-    /// <param name="index">The index of the argument to check (0-based).</param>
-    public class ArgumentEndsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
-        : MessageFilterAttribute(new ArgumentEndsWithFilter(content, comparison, index))
-    { }
+/// <summary>
+/// Attribute for filtering messages where a command argument starts with the specified content.
+/// </summary>
+/// <param name="content">The content that the command argument should start with.</param>
+/// <param name="comparison">The string comparison type to use for the check.</param>
+/// <param name="index">The index of the argument to check (0-based).</param>
+public class ArgumentStartsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
+    : MessageFilterAttribute(new ArgumentStartsWithFilter(content, comparison, index))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages where a command argument contains the specified content.
-    /// </summary>
-    /// <param name="content">The content that the command argument should contain.</param>
-    /// <param name="comparison">The string comparison type to use for the check.</param>
-    /// <param name="index">The index of the argument to check (0-based).</param>
-    public class ArgumentContainsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
-        : MessageFilterAttribute(new ArgumentContainsFilter(content, comparison, index))
-    { }
+/// <summary>
+/// Attribute for filtering messages where a command argument ends with the specified content.
+/// </summary>
+/// <param name="content">The content that the command argument should end with.</param>
+/// <param name="comparison">The string comparison type to use for the check.</param>
+/// <param name="index">The index of the argument to check (0-based).</param>
+public class ArgumentEndsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
+    : MessageFilterAttribute(new ArgumentEndsWithFilter(content, comparison, index))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages where a command argument equals the specified content.
-    /// </summary>
-    /// <param name="content">The content that the command argument should equal.</param>
-    /// <param name="comparison">The string comparison type to use for the check.</param>
-    /// <param name="index">The index of the argument to check (0-based).</param>
-    public class ArgumentEqualsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
-        : MessageFilterAttribute(new ArgumentEqualsFilter(content, comparison, index))
-    { }
+/// <summary>
+/// Attribute for filtering messages where a command argument contains the specified content.
+/// </summary>
+/// <param name="content">The content that the command argument should contain.</param>
+/// <param name="comparison">The string comparison type to use for the check.</param>
+/// <param name="index">The index of the argument to check (0-based).</param>
+public class ArgumentContainsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
+    : MessageFilterAttribute(new ArgumentContainsFilter(content, comparison, index))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages where a command argument matches a regular expression pattern.
-    /// </summary>
-    /// <param name="pattern">The regular expression pattern to match against the command argument.</param>
-    /// <param name="options">The regex options to use for the pattern matching.</param>
-    /// <param name="index">The index of the argument to check (0-based).</param>
-    public class ArgumentRegexAttribute(string pattern, RegexOptions options = RegexOptions.None, int index = 0)
-        : MessageFilterAttribute(new ArgumentRegexFilter(pattern, options, index: index))
-    { }
-}
+/// <summary>
+/// Attribute for filtering messages where a command argument equals the specified content.
+/// </summary>
+/// <param name="content">The content that the command argument should equal.</param>
+/// <param name="comparison">The string comparison type to use for the check.</param>
+/// <param name="index">The index of the argument to check (0-based).</param>
+public class ArgumentEqualsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture, int index = 0)
+    : MessageFilterAttribute(new ArgumentEqualsFilter(content, comparison, index))
+{ }
+
+/// <summary>
+/// Attribute for filtering messages where a command argument matches a regular expression pattern.
+/// </summary>
+/// <param name="pattern">The regular expression pattern to match against the command argument.</param>
+/// <param name="options">The regex options to use for the pattern matching.</param>
+/// <param name="index">The index of the argument to check (0-based).</param>
+public class ArgumentRegexAttribute(string pattern, RegexOptions options = RegexOptions.None, int index = 0)
+    : MessageFilterAttribute(new ArgumentRegexFilter(pattern, options, index: index))
+{ }

src/Telegrator/Annotations/DontCollectAttribute.cs

@@ -1,12 +1,11 @@
-namespace Telegrator.Annotations
-{
-    /// <summary>
-    /// Attribute that prevents a class from being automatically collected by the handler collection system.
-    /// When applied to a class, it will be excluded from domain-wide handler collection operations.
-    /// </summary>
-    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
-    public class DontCollectAttribute : Attribute
-    {
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute that prevents a class from being automatically collected by the handler collection system.
+/// When applied to a class, it will be excluded from domain-wide handler collection operations.
+/// </summary>
+[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
+public class DontCollectAttribute : Attribute
+{
 
-    }
 }

src/Telegrator/Annotations/EnvironmentFilterAttributes.cs

@@ -4,82 +4,81 @@ using Telegrator.Filters;
 using Telegrator.Attributes;
 using Telegrator.Core.Filters;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Abstract base attribute for filtering updates based on environment conditions.
+/// Can process all types of updates and provides environment-specific filtering logic.
+/// </summary>
+/// <param name="filters">The environment filters to apply</param>
+public abstract class EnvironmentFilterAttribute(params IFilter<Update>[] filters) : UpdateFilterAttribute<Update>(filters)
 {
     /// <summary>
-    /// Abstract base attribute for filtering updates based on environment conditions.
-    /// Can process all types of updates and provides environment-specific filtering logic.
+    /// Gets the allowed update types that this filter can process.
+    /// Environment filters can process all update types.
     /// </summary>
-    /// <param name="filters">The environment filters to apply</param>
-    public abstract class EnvironmentFilterAttribute(params IFilter<Update>[] filters) : UpdateFilterAttribute<Update>(filters)
-    {
-        /// <summary>
-        /// Gets the allowed update types that this filter can process.
-        /// Environment filters can process all update types.
-        /// </summary>
-        public override UpdateType[] AllowedTypes => Update.AllTypes;
-
-        /// <summary>
-        /// Gets the update as the filtering target.
-        /// Environment filters work with the entire update object.
-        /// </summary>
-        /// <param name="update">The Telegram update</param>
-        /// <returns>The update object itself</returns>
-        public override Update? GetFilterringTarget(Update update)
-            => update;
-    }
+    public override UpdateType[] AllowedTypes => Update.AllTypes;
 
     /// <summary>
-    /// Attribute for filtering updates that occur in debug environment.
-    /// Only allows updates when the application is running in debug mode.
+    /// Gets the update as the filtering target.
+    /// Environment filters work with the entire update object.
     /// </summary>
-    public class IsDebugEnvironmentAttribute()
-        : EnvironmentFilterAttribute(new IsDebugEnvironmentFilter())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering updates that occur in release environment.
-    /// Only allows updates when the application is running in release mode.
-    /// </summary>
-    public class IsReleaseEnvironmentAttribute()
-        : EnvironmentFilterAttribute(new IsReleaseEnvironmentFilter())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering updates based on environment variable values.
-    /// </summary>
-    public class EnvironmentVariableAttribute : EnvironmentFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter based on an environment variable with a specific value and comparison method.
-        /// </summary>
-        /// <param name="variable">The name of the environment variable</param>
-        /// <param name="value">The expected value of the environment variable</param>
-        /// <param name="comparison">The string comparison method</param>
-        public EnvironmentVariableAttribute(string variable, string? value, StringComparison comparison)
-            : base(new EnvironmentVariableFilter(variable, value, comparison)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter based on an environment variable with a specific value.
-        /// </summary>
-        /// <param name="variable">The name of the environment variable</param>
-        /// <param name="value">The expected value of the environment variable</param>
-        public EnvironmentVariableAttribute(string variable, string? value)
-            : base(new EnvironmentVariableFilter(variable, value)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter based on the existence of an environment variable.
-        /// </summary>
-        /// <param name="variable">The name of the environment variable</param>
-        public EnvironmentVariableAttribute(string variable)
-            : base(new EnvironmentVariableFilter(variable)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter based on an environment variable with a specific comparison method.
-        /// </summary>
-        /// <param name="variable">The name of the environment variable</param>
-        /// <param name="comparison">The string comparison method</param>
-        public EnvironmentVariableAttribute(string variable, StringComparison comparison)
-            : base(new EnvironmentVariableFilter(variable, comparison)) { }
-    }
+    /// <param name="update">The Telegram update</param>
+    /// <returns>The update object itself</returns>
+    public override Update? GetFilterringTarget(Update update)
+        => update;
+}
+
+/// <summary>
+/// Attribute for filtering updates that occur in debug environment.
+/// Only allows updates when the application is running in debug mode.
+/// </summary>
+public class IsDebugEnvironmentAttribute()
+    : EnvironmentFilterAttribute(new IsDebugEnvironmentFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering updates that occur in release environment.
+/// Only allows updates when the application is running in release mode.
+/// </summary>
+public class IsReleaseEnvironmentAttribute()
+    : EnvironmentFilterAttribute(new IsReleaseEnvironmentFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering updates based on environment variable values.
+/// </summary>
+public class EnvironmentVariableAttribute : EnvironmentFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute to filter based on an environment variable with a specific value and comparison method.
+    /// </summary>
+    /// <param name="variable">The name of the environment variable</param>
+    /// <param name="value">The expected value of the environment variable</param>
+    /// <param name="comparison">The string comparison method</param>
+    public EnvironmentVariableAttribute(string variable, string? value, StringComparison comparison)
+        : base(new EnvironmentVariableFilter(variable, value, comparison)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter based on an environment variable with a specific value.
+    /// </summary>
+    /// <param name="variable">The name of the environment variable</param>
+    /// <param name="value">The expected value of the environment variable</param>
+    public EnvironmentVariableAttribute(string variable, string? value)
+        : base(new EnvironmentVariableFilter(variable, value)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter based on the existence of an environment variable.
+    /// </summary>
+    /// <param name="variable">The name of the environment variable</param>
+    public EnvironmentVariableAttribute(string variable)
+        : base(new EnvironmentVariableFilter(variable)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter based on an environment variable with a specific comparison method.
+    /// </summary>
+    /// <param name="variable">The name of the environment variable</param>
+    /// <param name="comparison">The string comparison method</param>
+    public EnvironmentVariableAttribute(string variable, StringComparison comparison)
+        : base(new EnvironmentVariableFilter(variable, comparison)) { }
 }

src/Telegrator/Annotations/MentionedAttribute.cs

@@ -1,40 +1,39 @@
 using Telegram.Bot.Types.Enums;
 using Telegrator.Filters;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute for filtering messages that contain mentions.
+/// Allows handlers to respond only to messages that mention the bot or specific users.
+/// </summary>
+public class MentionedAttribute : MessageFilterAttribute
 {
     /// <summary>
-    /// Attribute for filtering messages that contain mentions.
-    /// Allows handlers to respond only to messages that mention the bot or specific users.
+    /// Initializes a new instance of the MentionedAttribute that matches any mention.
     /// </summary>
-    public class MentionedAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes a new instance of the MentionedAttribute that matches any mention.
-        /// </summary>
-        public MentionedAttribute()
-            : base(new MessageHasEntityFilter(MessageEntityType.Mention, null, null), new MentionedFilter()) { }
+    public MentionedAttribute()
+        : base(new MessageHasEntityFilter(MessageEntityType.Mention, null, null), new MentionedFilter()) { }
 
-        /// <summary>
-        /// Initializes a new instance of the MentionedAttribute that matches mentions at a specific offset.
-        /// </summary>
-        /// <param name="offset">The offset position where the mention should occur.</param>
-        public MentionedAttribute(int offset)
-            : base(new MessageHasEntityFilter(MessageEntityType.Mention, offset, null), new MentionedFilter()) { }
+    /// <summary>
+    /// Initializes a new instance of the MentionedAttribute that matches mentions at a specific offset.
+    /// </summary>
+    /// <param name="offset">The offset position where the mention should occur.</param>
+    public MentionedAttribute(int offset)
+        : base(new MessageHasEntityFilter(MessageEntityType.Mention, offset, null), new MentionedFilter()) { }
 
-        /// <summary>
-        /// Initializes a new instance of the MentionedAttribute that matches a specific mention.
-        /// </summary>
-        /// <param name="mention">The specific mention text to match.</param>
-        public MentionedAttribute(string mention)
-            : base(new MessageHasEntityFilter(MessageEntityType.Mention), new MentionedFilter(mention)) { }
+    /// <summary>
+    /// Initializes a new instance of the MentionedAttribute that matches a specific mention.
+    /// </summary>
+    /// <param name="mention">The specific mention text to match.</param>
+    public MentionedAttribute(string mention)
+        : base(new MessageHasEntityFilter(MessageEntityType.Mention), new MentionedFilter(mention)) { }
 
-        /// <summary>
-        /// Initializes a new instance of the MentionedAttribute that matches a specific mention at a specific offset.
-        /// </summary>
-        /// <param name="mention">The specific mention text to match.</param>
-        /// <param name="offset">The offset position where the mention should occur.</param>
-        public MentionedAttribute(string mention, int offset)
-            : base(new MessageHasEntityFilter(MessageEntityType.Mention, offset, null), new MentionedFilter(mention)) { }
-    }
+    /// <summary>
+    /// Initializes a new instance of the MentionedAttribute that matches a specific mention at a specific offset.
+    /// </summary>
+    /// <param name="mention">The specific mention text to match.</param>
+    /// <param name="offset">The offset position where the mention should occur.</param>
+    public MentionedAttribute(string mention, int offset)
+        : base(new MessageHasEntityFilter(MessageEntityType.Mention, offset, null), new MentionedFilter(mention)) { }
 }

src/Telegrator/Annotations/MessageChatFilterAttributes.cs

@@ -1,105 +1,104 @@
 using Telegram.Bot.Types.Enums;
 using Telegrator.Filters;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute for filtering messages sent in forum chats.
+/// </summary>
+public class ChatIsForumAttribute()
+    : MessageFilterAttribute(new MessageChatIsForumFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering messages sent in a specific chat by ID.
+/// </summary>
+/// <param name="id">The chat ID to match</param>
+public class ChatIdAttribute(long id)
+    : MessageFilterAttribute(new MessageChatIdFilter(id))
+{ }
+
+/// <summary>
+/// Attribute for filtering messages sent in chats of a specific type.
+/// </summary>
+public class ChatTypeAttribute : MessageFilterAttribute
 {
     /// <summary>
-    /// Attribute for filtering messages sent in forum chats.
+    /// Initialize new instance of <see cref="ChatTypeAttribute"/> to filter messages from chat from specific chats
     /// </summary>
-    public class ChatIsForumAttribute()
-        : MessageFilterAttribute(new MessageChatIsForumFilter())
-    { }
+    /// <param name="type"></param>
+    public ChatTypeAttribute(ChatType type)
+        : base(new MessageChatTypeFilter(type)) { }
 
     /// <summary>
-    /// Attribute for filtering messages sent in a specific chat by ID.
+    /// Initialize new instance of <see cref="ChatTypeAttribute"/> to filter messages from chat from specific chats (with flags)
     /// </summary>
-    /// <param name="id">The chat ID to match</param>
-    public class ChatIdAttribute(long id)
-        : MessageFilterAttribute(new MessageChatIdFilter(id))
-    { }
-
-    /// <summary>
-    /// Attribute for filtering messages sent in chats of a specific type.
-    /// </summary>
-    public class ChatTypeAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initialize new instance of <see cref="ChatTypeAttribute"/> to filter messages from chat from specific chats
-        /// </summary>
-        /// <param name="type"></param>
-        public ChatTypeAttribute(ChatType type)
-            : base(new MessageChatTypeFilter(type)) { }
-
-        /// <summary>
-        /// Initialize new instance of <see cref="ChatTypeAttribute"/> to filter messages from chat from specific chats (with flags)
-        /// </summary>
-        /// <param name="flags"></param>
-        public ChatTypeAttribute(ChatTypeFlags flags)
-            : base(new MessageChatTypeFilter(flags)) { }
-    }
-
-    /// <summary>
-    /// Attribute for filtering messages based on the chat title.
-    /// </summary>
-    public class ChatTitleAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter messages from chats with a specific title and comparison method.
-        /// </summary>
-        /// <param name="title">The chat title to match</param>
-        /// <param name="comparison">The string comparison method</param>
-        public ChatTitleAttribute(string? title, StringComparison comparison)
-            : base(new MessageChatTitleFilter(title, comparison)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages from chats with a specific title.
-        /// </summary>
-        /// <param name="title">The chat title to match</param>
-        public ChatTitleAttribute(string? title)
-            : base(new MessageChatTitleFilter(title)) { }
-    }
-
-    /// <summary>
-    /// Attribute for filtering messages based on the chat username.
-    /// </summary>
-    public class ChatUsernameAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter messages from chats with a specific username and comparison method.
-        /// </summary>
-        /// <param name="userName">The chat username to match</param>
-        /// <param name="comparison">The string comparison method</param>
-        public ChatUsernameAttribute(string? userName, StringComparison comparison)
-            : base(new MessageChatUsernameFilter(userName, comparison)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages from chats with a specific username.
-        /// </summary>
-        /// <param name="userName">The chat username to match</param>
-        public ChatUsernameAttribute(string? userName)
-            : base(new MessageChatUsernameFilter(userName, StringComparison.InvariantCulture)) { }
-    }
-
-    /// <summary>
-    /// Attribute for filtering messages based on the chat name (first name and optionally last name).
-    /// </summary>
-    public class ChatNameAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter messages from chats with specific first and last names.
-        /// </summary>
-        /// <param name="firstName">The first name to match</param>
-        /// <param name="lastName">The last name to match (optional)</param>
-        /// <param name="comparison">The string comparison method</param>
-        public ChatNameAttribute(string? firstName, string? lastName, StringComparison comparison)
-            : base(new MessageChatNameFilter(firstName, lastName, comparison)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages from chats with specific first and last names.
-        /// </summary>
-        /// <param name="firstName">The first name to match</param>
-        /// <param name="lastName">The last name to match (optional)</param>
-        public ChatNameAttribute(string? firstName, string? lastName)
-            : base(new MessageChatNameFilter(firstName, lastName)) { }
-    }
+    /// <param name="flags"></param>
+    public ChatTypeAttribute(ChatTypeFlags flags)
+        : base(new MessageChatTypeFilter(flags)) { }
+}
+
+/// <summary>
+/// Attribute for filtering messages based on the chat title.
+/// </summary>
+public class ChatTitleAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute to filter messages from chats with a specific title and comparison method.
+    /// </summary>
+    /// <param name="title">The chat title to match</param>
+    /// <param name="comparison">The string comparison method</param>
+    public ChatTitleAttribute(string? title, StringComparison comparison)
+        : base(new MessageChatTitleFilter(title, comparison)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages from chats with a specific title.
+    /// </summary>
+    /// <param name="title">The chat title to match</param>
+    public ChatTitleAttribute(string? title)
+        : base(new MessageChatTitleFilter(title)) { }
+}
+
+/// <summary>
+/// Attribute for filtering messages based on the chat username.
+/// </summary>
+public class ChatUsernameAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute to filter messages from chats with a specific username and comparison method.
+    /// </summary>
+    /// <param name="userName">The chat username to match</param>
+    /// <param name="comparison">The string comparison method</param>
+    public ChatUsernameAttribute(string? userName, StringComparison comparison)
+        : base(new MessageChatUsernameFilter(userName, comparison)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages from chats with a specific username.
+    /// </summary>
+    /// <param name="userName">The chat username to match</param>
+    public ChatUsernameAttribute(string? userName)
+        : base(new MessageChatUsernameFilter(userName, StringComparison.InvariantCulture)) { }
+}
+
+/// <summary>
+/// Attribute for filtering messages based on the chat name (first name and optionally last name).
+/// </summary>
+public class ChatNameAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute to filter messages from chats with specific first and last names.
+    /// </summary>
+    /// <param name="firstName">The first name to match</param>
+    /// <param name="lastName">The last name to match (optional)</param>
+    /// <param name="comparison">The string comparison method</param>
+    public ChatNameAttribute(string? firstName, string? lastName, StringComparison comparison)
+        : base(new MessageChatNameFilter(firstName, lastName, comparison)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages from chats with specific first and last names.
+    /// </summary>
+    /// <param name="firstName">The first name to match</param>
+    /// <param name="lastName">The last name to match (optional)</param>
+    public ChatNameAttribute(string? firstName, string? lastName)
+        : base(new MessageChatNameFilter(firstName, lastName)) { }
 }

src/Telegrator/Annotations/MessageFilterAttributes.cs

@@ -5,157 +5,156 @@ using Telegrator.Filters;
 using Telegrator.Attributes;
 using Telegrator.Core.Filters;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Abstract base attribute for filtering message-based updates.
+/// Supports various message types including regular messages, edited messages, channel posts, and business messages.
+/// </summary>
+/// <param name="filters">The filters to apply to messages</param>
+public abstract class MessageFilterAttribute(params IFilter<Message>[] filters) : UpdateFilterAttribute<Message>(filters)
 {
     /// <summary>
-    /// Abstract base attribute for filtering message-based updates.
-    /// Supports various message types including regular messages, edited messages, channel posts, and business messages.
+    /// Gets the allowed update types that this filter can process.
     /// </summary>
-    /// <param name="filters">The filters to apply to messages</param>
-    public abstract class MessageFilterAttribute(params IFilter<Message>[] filters) : UpdateFilterAttribute<Message>(filters)
-    {
-        /// <summary>
-        /// Gets the allowed update types that this filter can process.
-        /// </summary>
-        public override UpdateType[] AllowedTypes =>
-        [
-            UpdateType.Message,
-            UpdateType.EditedMessage,
-            UpdateType.ChannelPost,
-            UpdateType.EditedChannelPost,
-            UpdateType.BusinessMessage,
-            UpdateType.EditedBusinessMessage
-        ];
+    public override UpdateType[] AllowedTypes =>
+    [
+        UpdateType.Message,
+        UpdateType.EditedMessage,
+        UpdateType.ChannelPost,
+        UpdateType.EditedChannelPost,
+        UpdateType.BusinessMessage,
+        UpdateType.EditedBusinessMessage
+    ];
 
-        /// <summary>
-        /// Extracts the message from various types of updates.
-        /// </summary>
-        /// <param name="update">The Telegram update</param>
-        /// <returns>The message from the update, or null if not present</returns>
-        public override Message? GetFilterringTarget(Update update)
+    /// <summary>
+    /// Extracts the message from various types of updates.
+    /// </summary>
+    /// <param name="update">The Telegram update</param>
+    /// <returns>The message from the update, or null if not present</returns>
+    public override Message? GetFilterringTarget(Update update)
+    {
+        return update switch
         {
-            return update switch
-            {
-                { Message: { } message } => message,
-                { EditedMessage: { } message } => message,
-                { ChannelPost: { } message } => message,
-                { EditedChannelPost: { } message } => message,
-                { BusinessMessage: { } message } => message,
-                { EditedBusinessMessage: { } message } => message,
-                _ => null
-            };
-        }
-    }
-
-    /// <summary>
-    /// Attribute for filtering messages based on regular expression patterns.
-    /// </summary>
-    public class MessageRegexAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute with a regex pattern and options.
-        /// </summary>
-        /// <param name="pattern">The regular expression pattern to match</param>
-        /// <param name="regexOptions">The regex options for matching</param>
-        public MessageRegexAttribute(string pattern, RegexOptions regexOptions = default)
-            : base(new MessageRegexFilter(pattern, regexOptions)) { }
-
-        /// <summary>
-        /// Initializes the attribute with a precompiled regex.
-        /// </summary>
-        /// <param name="regex">The precompiled regular expression</param>
-        public MessageRegexAttribute(Regex regex)
-            : base(new MessageRegexFilter(regex)) { }
-    }
-
-    /// <summary>
-    /// Attribute for filtering messages that contain dice throws with specific values.
-    /// </summary>
-    public class DiceThrowedAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter dice throws with a specific value.
-        /// </summary>
-        /// <param name="value">The dice value to match</param>
-        public DiceThrowedAttribute(int value)
-            : base(new DiceThrowedFilter(value)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter dice throws with a specific type and value.
-        /// </summary>
-        /// <param name="diceType">The type of dice</param>
-        /// <param name="value">The dice value to match</param>
-        public DiceThrowedAttribute(DiceType diceType, int value)
-            : base(new DiceThrowedFilter(diceType, value)) { }
-    }
-
-    /// <summary>
-    /// Attribute for filtering messages that are automatically forwarded.
-    /// </summary>
-    public class IsAutomaticFormwardMessageAttribute()
-        : MessageFilterAttribute(new IsAutomaticFormwardMessageFilter())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering messages sent while the user was offline.
-    /// </summary>
-    public class IsFromOfflineMessageAttribute()
-        : MessageFilterAttribute(new IsFromOfflineMessageFilter())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering service messages (e.g., user joined, left, etc.).
-    /// </summary>
-    public class IsServiceMessageMessageAttribute()
-        : MessageFilterAttribute(new IsServiceMessageMessageFilter())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering topic messages in forum chats.
-    /// </summary>
-    public class IsTopicMessageMessageAttribute()
-        : MessageFilterAttribute(new IsServiceMessageMessageFilter())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering messages based on their entities (mentions, links, etc.).
-    /// </summary>
-    public class MessageHasEntityAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter messages with a specific entity type.
-        /// </summary>
-        /// <param name="type">The entity type to match</param>
-        public MessageHasEntityAttribute(MessageEntityType type)
-            : base(new MessageHasEntityFilter(type)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages with a specific entity type at a specific position.
-        /// </summary>
-        /// <param name="type">The entity type to match</param>
-        /// <param name="offset">The starting position of the entity</param>
-        /// <param name="length">The length of the entity (optional)</param>
-        public MessageHasEntityAttribute(MessageEntityType type, int offset, int? length)
-            : base(new MessageHasEntityFilter(type, offset, length)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages with a specific entity type and content.
-        /// </summary>
-        /// <param name="type">The entity type to match</param>
-        /// <param name="content">The content that the entity should contain</param>
-        /// <param name="stringComparison">The string comparison method</param>
-        public MessageHasEntityAttribute(MessageEntityType type, string content, StringComparison stringComparison = StringComparison.CurrentCulture)
-            : base(new MessageHasEntityFilter(type, content, stringComparison)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages with a specific entity type, position, and content.
-        /// </summary>
-        /// <param name="type">The entity type to match</param>
-        /// <param name="offset">The starting position of the entity</param>
-        /// <param name="length">The length of the entity (optional)</param>
-        /// <param name="content">The content that the entity should contain</param>
-        /// <param name="stringComparison">The string comparison method</param>
-        public MessageHasEntityAttribute(MessageEntityType type, int offset, int? length, string content, StringComparison stringComparison = StringComparison.CurrentCulture)
-            : base(new MessageHasEntityFilter(type, offset, length, content, stringComparison)) { }
+            { Message: { } message } => message,
+            { EditedMessage: { } message } => message,
+            { ChannelPost: { } message } => message,
+            { EditedChannelPost: { } message } => message,
+            { BusinessMessage: { } message } => message,
+            { EditedBusinessMessage: { } message } => message,
+            _ => null
+        };
     }
 }
+
+/// <summary>
+/// Attribute for filtering messages based on regular expression patterns.
+/// </summary>
+public class MessageRegexAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute with a regex pattern and options.
+    /// </summary>
+    /// <param name="pattern">The regular expression pattern to match</param>
+    /// <param name="regexOptions">The regex options for matching</param>
+    public MessageRegexAttribute(string pattern, RegexOptions regexOptions = default)
+        : base(new MessageRegexFilter(pattern, regexOptions)) { }
+
+    /// <summary>
+    /// Initializes the attribute with a precompiled regex.
+    /// </summary>
+    /// <param name="regex">The precompiled regular expression</param>
+    public MessageRegexAttribute(Regex regex)
+        : base(new MessageRegexFilter(regex)) { }
+}
+
+/// <summary>
+/// Attribute for filtering messages that contain dice throws with specific values.
+/// </summary>
+public class DiceThrowedAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute to filter dice throws with a specific value.
+    /// </summary>
+    /// <param name="value">The dice value to match</param>
+    public DiceThrowedAttribute(int value)
+        : base(new DiceThrowedFilter(value)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter dice throws with a specific type and value.
+    /// </summary>
+    /// <param name="diceType">The type of dice</param>
+    /// <param name="value">The dice value to match</param>
+    public DiceThrowedAttribute(DiceType diceType, int value)
+        : base(new DiceThrowedFilter(diceType, value)) { }
+}
+
+/// <summary>
+/// Attribute for filtering messages that are automatically forwarded.
+/// </summary>
+public class IsAutomaticFormwardMessageAttribute()
+    : MessageFilterAttribute(new IsAutomaticFormwardMessageFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering messages sent while the user was offline.
+/// </summary>
+public class IsFromOfflineMessageAttribute()
+    : MessageFilterAttribute(new IsFromOfflineMessageFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering service messages (e.g., user joined, left, etc.).
+/// </summary>
+public class IsServiceMessageMessageAttribute()
+    : MessageFilterAttribute(new IsServiceMessageMessageFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering topic messages in forum chats.
+/// </summary>
+public class IsTopicMessageMessageAttribute()
+    : MessageFilterAttribute(new IsServiceMessageMessageFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering messages based on their entities (mentions, links, etc.).
+/// </summary>
+public class MessageHasEntityAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute to filter messages with a specific entity type.
+    /// </summary>
+    /// <param name="type">The entity type to match</param>
+    public MessageHasEntityAttribute(MessageEntityType type)
+        : base(new MessageHasEntityFilter(type)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages with a specific entity type at a specific position.
+    /// </summary>
+    /// <param name="type">The entity type to match</param>
+    /// <param name="offset">The starting position of the entity</param>
+    /// <param name="length">The length of the entity (optional)</param>
+    public MessageHasEntityAttribute(MessageEntityType type, int offset, int? length)
+        : base(new MessageHasEntityFilter(type, offset, length)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages with a specific entity type and content.
+    /// </summary>
+    /// <param name="type">The entity type to match</param>
+    /// <param name="content">The content that the entity should contain</param>
+    /// <param name="stringComparison">The string comparison method</param>
+    public MessageHasEntityAttribute(MessageEntityType type, string content, StringComparison stringComparison = StringComparison.CurrentCulture)
+        : base(new MessageHasEntityFilter(type, content, stringComparison)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages with a specific entity type, position, and content.
+    /// </summary>
+    /// <param name="type">The entity type to match</param>
+    /// <param name="offset">The starting position of the entity</param>
+    /// <param name="length">The length of the entity (optional)</param>
+    /// <param name="content">The content that the entity should contain</param>
+    /// <param name="stringComparison">The string comparison method</param>
+    public MessageHasEntityAttribute(MessageEntityType type, int offset, int? length, string content, StringComparison stringComparison = StringComparison.CurrentCulture)
+        : base(new MessageHasEntityFilter(type, offset, length, content, stringComparison)) { }
+}

src/Telegrator/Annotations/MessageRepliedAttributes.cs

@@ -1,27 +1,26 @@
 using Telegrator.Filters;
 
-namespace Telegrator.Annotations
-{
-    /// <summary>
-    /// Attribute for filtering messages with reply to messages of this bot.
-    /// </summary>
-    public class MeRepliedAttribute()
-        : MessageFilterAttribute(new MeRepliedFilter())
-    { }
+namespace Telegrator.Annotations;
 
-    /// <summary>
-    /// Attribute for checking message's reply chain.
-    /// </summary>
-    public class HasReplyAttribute(int replyDepth = 1)
-        : MessageFilterAttribute(new MessageHasReplyFilter(replyDepth))
-    { }
+/// <summary>
+/// Attribute for filtering messages with reply to messages of this bot.
+/// </summary>
+public class MeRepliedAttribute()
+    : MessageFilterAttribute(new MeRepliedFilter())
+{ }
 
-    /// <summary>
-    /// Helper filter class for filters that operate on replied messages.
-    /// Provides functionality to traverse reply chains and access replied message content.
-    /// </summary>
-    /// <param name="replyDepth"></param>
-    public class FromReplyChainAttribute(int replyDepth = 1)
-        : MessageFilterAttribute(new FromReplyChainFilter(replyDepth))
-    { }
-}
+/// <summary>
+/// Attribute for checking message's reply chain.
+/// </summary>
+public class HasReplyAttribute(int replyDepth = 1)
+    : MessageFilterAttribute(new MessageHasReplyFilter(replyDepth))
+{ }
+
+/// <summary>
+/// Helper filter class for filters that operate on replied messages.
+/// Provides functionality to traverse reply chains and access replied message content.
+/// </summary>
+/// <param name="replyDepth"></param>
+public class FromReplyChainAttribute(int replyDepth = 1)
+    : MessageFilterAttribute(new FromReplyChainFilter(replyDepth))
+{ }

src/Telegrator/Annotations/MessageSenderFilterAttributes.cs

@@ -1,92 +1,91 @@
 using Telegrator.Filters;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute for filtering messages based on the sender's username.
+/// </summary>
+public class FromUsernameAttribute : MessageFilterAttribute
 {
     /// <summary>
-    /// Attribute for filtering messages based on the sender's username.
+    /// Initializes the attribute to filter messages from a specific username.
     /// </summary>
-    public class FromUsernameAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter messages from a specific username.
-        /// </summary>
-        /// <param name="username">The username to match</param>
-        public FromUsernameAttribute(string username)
-            : base(new FromUsernameFilter(username)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages from a specific username with custom comparison.
-        /// </summary>
-        /// <param name="username">The username to match</param>
-        /// <param name="comparison">The string comparison method</param>
-        public FromUsernameAttribute(string username, StringComparison comparison)
-            : base(new FromUsernameFilter(username, comparison)) { }
-    }
+    /// <param name="username">The username to match</param>
+    public FromUsernameAttribute(string username)
+        : base(new FromUsernameFilter(username)) { }
 
     /// <summary>
-    /// Attribute for filtering messages based on the sender's name (first name and optionally last name).
+    /// Initializes the attribute to filter messages from a specific username with custom comparison.
     /// </summary>
-    public class FromUserAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Initializes the attribute to filter messages from a user with specific first and last names.
-        /// </summary>
-        /// <param name="firstName">The first name to match</param>
-        /// <param name="lastName">The last name to match (optional)</param>
-        /// <param name="comparison">The string comparison method</param>
-        public FromUserAttribute(string firstName, string? lastName, StringComparison comparison)
-            : base(new FromUserFilter(firstName, lastName, comparison)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages from a user with specific first and last names.
-        /// </summary>
-        /// <param name="firstName">The first name to match</param>
-        /// <param name="lastName">The last name to match</param>
-        public FromUserAttribute(string firstName, string? lastName)
-            : base(new FromUserFilter(firstName, lastName, StringComparison.InvariantCulture)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages from a user with a specific first name.
-        /// </summary>
-        /// <param name="firstName">The first name to match</param>
-        public FromUserAttribute(string firstName)
-            : base(new FromUserFilter(firstName, null, StringComparison.InvariantCulture)) { }
-
-        /// <summary>
-        /// Initializes the attribute to filter messages from a user with a specific first name and custom comparison.
-        /// </summary>
-        /// <param name="firstName">The first name to match</param>
-        /// <param name="comparison">The string comparison method</param>
-        public FromUserAttribute(string firstName, StringComparison comparison)
-            : base(new FromUserFilter(firstName, null, comparison)) { }
-    }
-
-    /// <summary>
-    /// Attribute for filtering messages from a specific user ID.
-    /// </summary>
-    /// <param name="userId">The user ID to match</param>
-    public class FromUserIdAttribute(long userId)
-        : MessageFilterAttribute(new FromUserIdFilter(userId))
-    { }
-
-    /// <summary>
-    /// Attribute for filtering messages sent by not bots (users).
-    /// </summary>
-    public class NotFromBotAttribute()
-        : MessageFilterAttribute(new FromBotFilter().Not())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering messages sent by bots.
-    /// </summary>
-    public class FromBotAttribute()
-        : MessageFilterAttribute(new FromBotFilter())
-    { }
-
-    /// <summary>
-    /// Attribute for filtering messages sent by premium users.
-    /// </summary>
-    public class FromPremiumUserAttribute()
-        : MessageFilterAttribute(new FromPremiumUserFilter())
-    { }
+    /// <param name="username">The username to match</param>
+    /// <param name="comparison">The string comparison method</param>
+    public FromUsernameAttribute(string username, StringComparison comparison)
+        : base(new FromUsernameFilter(username, comparison)) { }
 }
+
+/// <summary>
+/// Attribute for filtering messages based on the sender's name (first name and optionally last name).
+/// </summary>
+public class FromUserAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Initializes the attribute to filter messages from a user with specific first and last names.
+    /// </summary>
+    /// <param name="firstName">The first name to match</param>
+    /// <param name="lastName">The last name to match (optional)</param>
+    /// <param name="comparison">The string comparison method</param>
+    public FromUserAttribute(string firstName, string? lastName, StringComparison comparison)
+        : base(new FromUserFilter(firstName, lastName, comparison)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages from a user with specific first and last names.
+    /// </summary>
+    /// <param name="firstName">The first name to match</param>
+    /// <param name="lastName">The last name to match</param>
+    public FromUserAttribute(string firstName, string? lastName)
+        : base(new FromUserFilter(firstName, lastName, StringComparison.InvariantCulture)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages from a user with a specific first name.
+    /// </summary>
+    /// <param name="firstName">The first name to match</param>
+    public FromUserAttribute(string firstName)
+        : base(new FromUserFilter(firstName, null, StringComparison.InvariantCulture)) { }
+
+    /// <summary>
+    /// Initializes the attribute to filter messages from a user with a specific first name and custom comparison.
+    /// </summary>
+    /// <param name="firstName">The first name to match</param>
+    /// <param name="comparison">The string comparison method</param>
+    public FromUserAttribute(string firstName, StringComparison comparison)
+        : base(new FromUserFilter(firstName, null, comparison)) { }
+}
+
+/// <summary>
+/// Attribute for filtering messages from a specific user ID.
+/// </summary>
+/// <param name="userId">The user ID to match</param>
+public class FromUserIdAttribute(long userId)
+    : MessageFilterAttribute(new FromUserIdFilter(userId))
+{ }
+
+/// <summary>
+/// Attribute for filtering messages sent by not bots (users).
+/// </summary>
+public class NotFromBotAttribute()
+    : MessageFilterAttribute(new FromBotFilter().Not())
+{ }
+
+/// <summary>
+/// Attribute for filtering messages sent by bots.
+/// </summary>
+public class FromBotAttribute()
+    : MessageFilterAttribute(new FromBotFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering messages sent by premium users.
+/// </summary>
+public class FromPremiumUserAttribute()
+    : MessageFilterAttribute(new FromPremiumUserFilter())
+{ }

src/Telegrator/Annotations/MessageTextFilterAttributes.cs

@@ -1,58 +1,57 @@
 using Telegrator.Filters;
 
-namespace Telegrator.Annotations
-{
-    /// <summary>
-    /// Attribute for filtering messages where the text starts with the specified content.
-    /// </summary>
-    /// <param name="content">The string that the message text should start with</param>
-    /// <param name="comparison">The string comparison type</param>
-    public class TextStartsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
-        : MessageFilterAttribute(new TextStartsWithFilter(content, comparison))
-    { }
+namespace Telegrator.Annotations;
 
-    /// <summary>
-    /// Attribute for filtering messages where the text ends with the specified content.
-    /// </summary>
-    /// <param name="content">The string that the message text should end with</param>
-    /// <param name="comparison">The string comparison type</param>
-    public class TextEndsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
-        : MessageFilterAttribute(new TextEndsWithFilter(content, comparison))
-    { }
+/// <summary>
+/// Attribute for filtering messages where the text starts with the specified content.
+/// </summary>
+/// <param name="content">The string that the message text should start with</param>
+/// <param name="comparison">The string comparison type</param>
+public class TextStartsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
+    : MessageFilterAttribute(new TextStartsWithFilter(content, comparison))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages where the text contains the specified content.
-    /// </summary>
-    /// <param name="content">The string that the message text should contain</param>
-    /// <param name="comparison">The string comparison type</param>
-    public class TextContainsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
-        : MessageFilterAttribute(new TextContainsFilter(content, comparison))
-    { }
+/// <summary>
+/// Attribute for filtering messages where the text ends with the specified content.
+/// </summary>
+/// <param name="content">The string that the message text should end with</param>
+/// <param name="comparison">The string comparison type</param>
+public class TextEndsWithAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
+    : MessageFilterAttribute(new TextEndsWithFilter(content, comparison))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages where the text equals the specified content.
-    /// </summary>
-    /// <param name="content">The string that the message text should equal</param>
-    /// <param name="comparison">The string comparison type</param>
-    public class TextEqualsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
-        : MessageFilterAttribute(new TextEqualsFilter(content, comparison))
-    { }
+/// <summary>
+/// Attribute for filtering messages where the text contains the specified content.
+/// </summary>
+/// <param name="content">The string that the message text should contain</param>
+/// <param name="comparison">The string comparison type</param>
+public class TextContainsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
+    : MessageFilterAttribute(new TextContainsFilter(content, comparison))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages that contain any non-empty text.
-    /// </summary>
-    public class HasTextAttribute()
-        : MessageFilterAttribute(new TextNotNullOrEmptyFilter())
-    { }
+/// <summary>
+/// Attribute for filtering messages where the text equals the specified content.
+/// </summary>
+/// <param name="content">The string that the message text should equal</param>
+/// <param name="comparison">The string comparison type</param>
+public class TextEqualsAttribute(string content, StringComparison comparison = StringComparison.InvariantCulture)
+    : MessageFilterAttribute(new TextEqualsFilter(content, comparison))
+{ }
 
-    /// <summary>
-    /// Attribute for filtering messages where the text contains a 'word'.
-    /// 'Word' must be a separate member of the text, and not have any alphabetic characters next to it.
-    /// </summary>
-    /// <param name="word"></param>
-    /// <param name="comparison"></param>
-    /// <param name="startIndex"></param>
-    public class TextContainsWordAttribute(string word, StringComparison comparison = StringComparison.InvariantCulture, int startIndex = 0)
-        : MessageFilterAttribute(new TextContainsWordFilter(word, comparison, startIndex))
-    { }
-}
+/// <summary>
+/// Attribute for filtering messages that contain any non-empty text.
+/// </summary>
+public class HasTextAttribute()
+    : MessageFilterAttribute(new TextNotNullOrEmptyFilter())
+{ }
+
+/// <summary>
+/// Attribute for filtering messages where the text contains a 'word'.
+/// 'Word' must be a separate member of the text, and not have any alphabetic characters next to it.
+/// </summary>
+/// <param name="word"></param>
+/// <param name="comparison"></param>
+/// <param name="startIndex"></param>
+public class TextContainsWordAttribute(string word, StringComparison comparison = StringComparison.InvariantCulture, int startIndex = 0)
+    : MessageFilterAttribute(new TextContainsWordFilter(word, comparison, startIndex))
+{ }

src/Telegrator/Annotations/MightAwaitAttribute.cs

@@ -1,27 +1,26 @@
 using Telegram.Bot.Types.Enums;
 
-namespace Telegrator.Annotations
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute that says if this handler can await some of await types, that is not listed by its handler base.
+/// Used for automatic collecting allowed to receiving <see cref="UpdateType"/>'s.
+/// If you don't use it, you won't be able to await the updates inside handler.
+/// </summary>
+[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
+public class MightAwaitAttribute : Attribute
 {
+    private readonly UpdateType[] _updateTypes;
+
     /// <summary>
-    /// Attribute that says if this handler can await some of await types, that is not listed by its handler base.
-    /// Used for automatic collecting allowed to receiving <see cref="UpdateType"/>'s.
-    /// If you don't use it, you won't be able to await the updates inside handler.
+    /// Update types that may be awaited
     /// </summary>
-    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
-    public class MightAwaitAttribute : Attribute
-    {
-        private readonly UpdateType[] _updateTypes;
+    public UpdateType[] UpdateTypes => _updateTypes;
 
-        /// <summary>
-        /// Update types that may be awaited
-        /// </summary>
-        public UpdateType[] UpdateTypes => _updateTypes;
-
-        /// <summary>
-        /// main ctor of <see cref="MightAwaitAttribute"/>
-        /// </summary>
-        /// <param name="updateTypes"></param>
-        public MightAwaitAttribute(params UpdateType[] updateTypes)
-            => _updateTypes = updateTypes;
-    }
+    /// <summary>
+    /// main ctor of <see cref="MightAwaitAttribute"/>
+    /// </summary>
+    /// <param name="updateTypes"></param>
+    public MightAwaitAttribute(params UpdateType[] updateTypes)
+        => _updateTypes = updateTypes;
 }

src/Telegrator/Annotations/StateAttribute.cs

@@ -0,0 +1,32 @@
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+using Telegrator.Attributes;
+using Telegrator.Core.States;
+using Telegrator.Filters;
+
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute for filtering updates where resolved state matches target value.
+/// </summary>
+/// <typeparam name="TKey"></typeparam>
+/// <typeparam name="TValue"></typeparam>
+/// <param name="value"></param>
+public class StateAttribute<TKey, TValue>(TValue? value) : UpdateFilterAttribute<Update>(new StateKeyFilter<TKey, TValue>(value))
+    where TKey : IStateKeyResolver, new()
+    where TValue : IEquatable<TValue>
+{
+    /// <summary>
+    /// The targetting state value.
+    /// </summary>
+    public TValue? Value => value;
+
+    /// <inheritdoc/>
+    public override UpdateType[] AllowedTypes => Update.AllTypes;
+
+    /// <inheritdoc/>
+    public override Update? GetFilterringTarget(Update update)
+    {
+        return update;
+    }
+}

src/Telegrator/Annotations/StateKeeping/EnumStateAttribute.cs

@@ -1,44 +0,0 @@
-using Telegrator.StateKeeping;
-using Telegrator.Attributes;
-using Telegrator.Core.StateKeeping;
-
-namespace Telegrator.Annotations.StateKeeping
-{
-    /// <summary>
-    /// Attribute for managing enum-based states in Telegram bot handlers.
-    /// Provides a convenient way to associate enum values with state management functionality.
-    /// </summary>
-    /// <typeparam name="TEnum">The enum type to be used for state management.</typeparam>
-    public class EnumStateAttribute<TEnum> : StateKeeperAttribute<long, TEnum, EnumStateKeeper<TEnum>> where TEnum : Enum
-    {
-        /// <summary>
-        /// Initializes a new instance of the EnumStateAttribute with a special state and custom key resolver.
-        /// </summary>
-        /// <param name="specialState">The special state to be managed.</param>
-        /// <param name="keyResolver">The resolver for extracting keys from updates.</param>
-        public EnumStateAttribute(SpecialState specialState, IStateKeyResolver<long> keyResolver)
-            : base(specialState, keyResolver) { }
-
-        /// <summary>
-        /// Initializes a new instance of the EnumStateAttribute with a specific enum state and custom key resolver.
-        /// </summary>
-        /// <param name="myState">The specific enum state to be managed.</param>
-        /// <param name="keyResolver">The resolver for extracting keys from updates.</param>
-        public EnumStateAttribute(TEnum myState, IStateKeyResolver<long> keyResolver)
-            : base(myState, keyResolver) { }
-
-        /// <summary>
-        /// Initializes a new instance of the EnumStateAttribute with a special state and default sender ID resolver.
-        /// </summary>
-        /// <param name="specialState">The special state to be managed.</param>
-        public EnumStateAttribute(SpecialState specialState)
-            : base(specialState, new SenderIdResolver()) { }
-
-        /// <summary>
-        /// Initializes a new instance of the EnumStateAttribute with a specific enum state and default sender ID resolver.
-        /// </summary>
-        /// <param name="myState">The specific enum state to be managed.</param>
-        public EnumStateAttribute(TEnum myState)
-            : this(myState, new SenderIdResolver()) { }
-    }
-}

src/Telegrator/Annotations/StateKeeping/NumericStateAttribute.cs

@@ -1,43 +0,0 @@
-using Telegrator.StateKeeping;
-using Telegrator.Attributes;
-using Telegrator.Core.StateKeeping;
-
-namespace Telegrator.Annotations.StateKeeping
-{
-    /// <summary>
-    /// Attribute for associating a handler or method with a numeric (integer) state keeper.
-    /// Provides constructors for flexible state and key resolver configuration.
-    /// </summary>
-    public class NumericStateAttribute : StateKeeperAttribute<long, int, NumericStateKeeper>
-    {
-        /// <summary>
-        /// Initializes the attribute with a special state and a custom key resolver.
-        /// </summary>
-        /// <param name="specialState">The special state to associate</param>
-        /// <param name="keyResolver">The key resolver for state keeping</param>
-        public NumericStateAttribute(SpecialState specialState, IStateKeyResolver<long> keyResolver)
-            : base(specialState, keyResolver) { }
-
-        /// <summary>
-        /// Initializes the attribute with a specific numeric state and a custom key resolver.
-        /// </summary>
-        /// <param name="myState">The integer state to associate</param>
-        /// <param name="keyResolver">The key resolver for state keeping</param>
-        public NumericStateAttribute(int myState, IStateKeyResolver<long> keyResolver)
-            : base(myState, keyResolver) { }
-
-        /// <summary>
-        /// Initializes the attribute with a special state and the default sender ID resolver.
-        /// </summary>
-        /// <param name="specialState">The special state to associate</param>
-        public NumericStateAttribute(SpecialState specialState)
-            : base(specialState, new SenderIdResolver()) { }
-
-        /// <summary>
-        /// Initializes the attribute with a specific numeric state and the default sender ID resolver.
-        /// </summary>
-        /// <param name="myState">The integer state to associate</param>
-        public NumericStateAttribute(int myState)
-            : this(myState, new SenderIdResolver()) { }
-    }
-}

src/Telegrator/Annotations/StateKeeping/SpecialState.cs

@@ -1,21 +0,0 @@
-namespace Telegrator.Annotations.StateKeeping
-{
-    /// <summary>
-    /// Represents special states for state keeping logic.
-    /// </summary>
-    public enum SpecialState
-    {
-        /// <summary>
-        /// No special state.
-        /// </summary>
-        None,
-        /// <summary>
-        /// Indicates that no state is present.
-        /// </summary>
-        NoState,
-        /// <summary>
-        /// Indicates that any state is acceptable.
-        /// </summary>
-        AnyState
-    }
-}

src/Telegrator/Annotations/StateKeeping/StringStateAttribute.cs

@@ -1,43 +0,0 @@
-using Telegrator.StateKeeping;
-using Telegrator.Attributes;
-using Telegrator.Core.StateKeeping;
-
-namespace Telegrator.Annotations.StateKeeping
-{
-    /// <summary>
-    /// Attribute for associating a handler or method with a string-based state keeper.
-    /// Provides various constructors for flexible state and key resolver configuration.
-    /// </summary>
-    public class StringStateAttribute : StateKeeperAttribute<long, string, StringStateKeeper>
-    {
-        /// <summary>
-        /// Initializes the attribute with a special state and a custom key resolver.
-        /// </summary>
-        /// <param name="specialState">The special state to associate</param>
-        /// <param name="keyResolver">The key resolver for state keeping</param>
-        public StringStateAttribute(SpecialState specialState, IStateKeyResolver<long> keyResolver)
-            : base(specialState, keyResolver) { }
-
-        /// <summary>
-        /// Initializes the attribute with a specific state and a custom key resolver.
-        /// </summary>
-        /// <param name="myState">The string state to associate</param>
-        /// <param name="keyResolver">The key resolver for state keeping</param>
-        public StringStateAttribute(string myState, IStateKeyResolver<long> keyResolver)
-            : base(myState, keyResolver) { }
-
-        /// <summary>
-        /// Initializes the attribute with a special state and the default sender ID resolver.
-        /// </summary>
-        /// <param name="specialState">The special state to associate</param>
-        public StringStateAttribute(SpecialState specialState)
-            : base(specialState, new SenderIdResolver()) { }
-
-        /// <summary>
-        /// Initializes the attribute with a specific state and the default sender ID resolver.
-        /// </summary>
-        /// <param name="myState">The string state to associate</param>
-        public StringStateAttribute(string myState)
-            : base(myState, new SenderIdResolver()) { }
-    }
-}

src/Telegrator/Annotations/Targetted/WelcomeAttribute.cs

@@ -1,23 +0,0 @@
-using Telegram.Bot.Types;
-using Telegram.Bot.Types.Enums;
-using Telegrator.Filters;
-
-namespace Telegrator.Annotations.Targetted
-{
-    /// <summary>
-    /// Attribute for filtering message with command "start" in bot's private chats.
-    /// Allows handlers to respond to "welcome" bot commands.
-    /// </summary>
-    public class WelcomeAttribute : MessageFilterAttribute
-    {
-        /// <summary>
-        /// Creates new instance of <see cref="WelcomeAttribute"/>
-        /// </summary>
-        /// <param name="onlyFirst"></param>
-        public WelcomeAttribute(bool onlyFirst = false) : base(
-            new MessageChatTypeFilter(ChatType.Private),
-            new CommandAlliasFilter("start"),
-            Filter<Message>.If(ctx => !onlyFirst || ctx.Input.Id == 0))
-        { }
-    }
-}

src/Telegrator/Annotations/WelcomeAttribute.cs

@@ -0,0 +1,22 @@
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+using Telegrator.Filters;
+
+namespace Telegrator.Annotations;
+
+/// <summary>
+/// Attribute for filtering message with command "start" in bot's private chats.
+/// Allows handlers to respond to "welcome" bot commands.
+/// </summary>
+public class WelcomeAttribute : MessageFilterAttribute
+{
+    /// <summary>
+    /// Creates new instance of <see cref="WelcomeAttribute"/>
+    /// </summary>
+    /// <param name="onlyFirst"></param>
+    public WelcomeAttribute(bool onlyFirst = false) : base(
+        new MessageChatTypeFilter(ChatType.Private),
+        new CommandAlliasFilter("start"),
+        Filter<Message>.If(ctx => !onlyFirst || ctx.Input.Id == 0))
+    { }
+}

src/Telegrator/Aspects/AfterExecutionAttribute.cs

@@ -1,16 +1,15 @@
-namespace Telegrator.Aspects
+namespace Telegrator.Aspects;
+
+/// <summary>
+/// Attribute that specifies a post-execution processor to be executed after the handler.
+/// The processor type must implement <see cref="IPostProcessor"/> interface.
+/// </summary>
+/// <typeparam name="T">The type of the post-processor that implements <see cref="IPostProcessor"/>.</typeparam>
+[AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
+public class AfterExecutionAttribute<T> : Attribute where T : IPostProcessor
 {
     /// <summary>
-    /// Attribute that specifies a post-execution processor to be executed after the handler.
-    /// The processor type must implement <see cref="IPostProcessor"/> interface.
+    /// Gets the type of the post-processor.
     /// </summary>
-    /// <typeparam name="T">The type of the post-processor that implements <see cref="IPostProcessor"/>.</typeparam>
-    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
-    public class AfterExecutionAttribute<T> : Attribute where T : IPostProcessor
-    {
-        /// <summary>
-        /// Gets the type of the post-processor.
-        /// </summary>
-        public Type ProcessorType => typeof(T);
-    }
+    public Type ProcessorType => typeof(T);
 }

src/Telegrator/Aspects/BeforeExecutionAttribute.cs

@@ -1,16 +1,15 @@
-namespace Telegrator.Aspects
+namespace Telegrator.Aspects;
+
+/// <summary>
+/// Attribute that specifies a pre-execution processor to be executed before the handler.
+/// The processor type must implement <see cref="IPreProcessor"/> interface.
+/// </summary>
+/// <typeparam name="T">The type of the pre-processor that implements <see cref="IPreProcessor"/>.</typeparam>
+[AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
+public class BeforeExecutionAttribute<T> : Attribute where T : IPreProcessor
 {
     /// <summary>
-    /// Attribute that specifies a pre-execution processor to be executed before the handler.
-    /// The processor type must implement <see cref="IPreProcessor"/> interface.
+    /// Gets the type of the pre-processor.
     /// </summary>
-    /// <typeparam name="T">The type of the pre-processor that implements <see cref="IPreProcessor"/>.</typeparam>
-    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
-    public class BeforeExecutionAttribute<T> : Attribute where T : IPreProcessor
-    {
-        /// <summary>
-        /// Gets the type of the pre-processor.
-        /// </summary>
-        public Type ProcessorType => typeof(T);
-    }
+    public Type ProcessorType => typeof(T);
 }

src/Telegrator/Aspects/IPostProcessor.cs.cs

@@ -1,19 +1,18 @@
 using Telegrator.Core.Handlers;
 
-namespace Telegrator.Aspects
+namespace Telegrator.Aspects;
+
+/// <summary>
+/// Interface for post-execution processors that are executed after handler execution.
+/// Implement this interface to add cross-cutting concerns like logging, cleanup, or metrics collection.
+/// </summary>
+public interface IPostProcessor
 {
     /// <summary>
-    /// Interface for post-execution processors that are executed after handler execution.
-    /// Implement this interface to add cross-cutting concerns like logging, cleanup, or metrics collection.
+    /// Executes after the handler's main execution logic.
     /// </summary>
-    public interface IPostProcessor
-    {
-        /// <summary>
-        /// Executes after the handler's main execution logic.
-        /// </summary>
-        /// <param name="container">The handler container containing the current update and context.</param>
-        /// <param name="cancellationToken"></param>
-        /// <returns>A <see cref="Result"/> indicating the final execution result.</returns>
-        public Task<Result> AfterExecution(IHandlerContainer container, CancellationToken cancellationToken);
-    }
+    /// <param name="container">The handler container containing the current update and context.</param>
+    /// <param name="cancellationToken"></param>
+    /// <returns>A <see cref="Result"/> indicating the final execution result.</returns>
+    public Task<Result> AfterExecution(IHandlerContainer container, CancellationToken cancellationToken);
 }

src/Telegrator/Aspects/IPreProcessor.cs

@@ -1,19 +1,18 @@
 using Telegrator.Core.Handlers;
 
-namespace Telegrator.Aspects
+namespace Telegrator.Aspects;
+
+/// <summary>
+/// Interface for pre-execution processors that are executed before handler execution.
+/// Implement this interface to add cross-cutting concerns like validation, logging, or authorization.
+/// </summary>
+public interface IPreProcessor
 {
     /// <summary>
-    /// Interface for pre-execution processors that are executed before handler execution.
-    /// Implement this interface to add cross-cutting concerns like validation, logging, or authorization.
+    /// Executes before the handler's main execution logic.
     /// </summary>
-    public interface IPreProcessor
-    {
-        /// <summary>
-        /// Executes before the handler's main execution logic.
-        /// </summary>
-        /// <param name="container">The handler container containing the current update and context.</param>
-        /// <param name="cancellationToken"></param>
-        /// <returns>A <see cref="Result"/> indicating whether execution should continue or be stopped.</returns>
-        public Task<Result> BeforeExecution(IHandlerContainer container, CancellationToken cancellationToken = default);
-    }
+    /// <param name="container">The handler container containing the current update and context.</param>
+    /// <param name="cancellationToken"></param>
+    /// <returns>A <see cref="Result"/> indicating whether execution should continue or be stopped.</returns>
+    public Task<Result> BeforeExecution(IHandlerContainer container, CancellationToken cancellationToken = default);
 }

src/Telegrator/Attributes/FilterAnnotation.cs

@@ -3,37 +3,36 @@ using Telegram.Bot.Types.Enums;
 using Telegrator.Core.Filters;
 using Telegrator.Filters;
 
-namespace Telegrator.Attributes
+namespace Telegrator.Attributes;
+
+/// <summary>
+/// Reactive way to implement a new <see cref="UpdateFilterAttribute{T}"/> of type <typeparamref name="T"/>
+/// </summary>
+/// <typeparam name="T"></typeparam>
+public abstract class FilterAnnotation<T> : UpdateFilterAttribute<T>, IFilter<T>, INamedFilter where T : class
 {
+    /// <inheritdoc/>
+    public virtual bool IsCollectible { get; } = false;
+
+    /// <inheritdoc/>
+    public override UpdateType[] AllowedTypes { get; } = typeof(T).GetAllowedUpdateTypes();
+
+    /// <inheritdoc/>
+    public string Name => GetType().Name;
+
     /// <summary>
-    /// Reactive way to implement a new <see cref="UpdateFilterAttribute{T}"/> of type <typeparamref name="T"/>
+    /// Initializes new instance of <see cref="FilterAnnotation{T}"/>
     /// </summary>
-    /// <typeparam name="T"></typeparam>
-    public abstract class FilterAnnotation<T> : UpdateFilterAttribute<T>, IFilter<T>, INamedFilter where T : class
+    public FilterAnnotation() : base()
     {
-        /// <inheritdoc/>
-        public virtual bool IsCollectible { get; } = false;
-
-        /// <inheritdoc/>
-        public override UpdateType[] AllowedTypes { get; } = typeof(T).GetAllowedUpdateTypes();
-
-        /// <inheritdoc/>
-        public string Name => GetType().Name;
-
-        /// <summary>
-        /// Initializes new instance of <see cref="FilterAnnotation{T}"/>
-        /// </summary>
-        public FilterAnnotation() : base()
-        {
-            UpdateFilter = Filter<T>.If(CanPass);
-            AnonymousFilter = AnonymousTypeFilter.Compile(UpdateFilter, GetFilterringTarget);
-        }
-
-        /// <inheritdoc/>
-        public override T? GetFilterringTarget(Update update)
-            => update.GetActualUpdateObject<T>();
-
-        /// <inheritdoc/>
-        public abstract bool CanPass(FilterExecutionContext<T> context);
+        UpdateFilter = Filter<T>.If(CanPass);
+        AnonymousFilter = AnonymousTypeFilter.Compile(UpdateFilter, GetFilterringTarget);
     }
+
+    /// <inheritdoc/>
+    public override T? GetFilterringTarget(Update update)
+        => update.GetActualUpdateObject<T>();
+
+    /// <inheritdoc/>
+    public abstract bool CanPass(FilterExecutionContext<T> context);
 }

src/Telegrator/Attributes/FilterModifier.cs

@@ -1,25 +1,24 @@
-namespace Telegrator.Attributes
+namespace Telegrator.Attributes;
+
+/// <summary>
+/// Enumeration of filter modifiers that can be applied to update filters.
+/// Defines how filters should be combined and applied in filter chains.
+/// </summary>
+[Flags]
+public enum FilterModifier
 {
     /// <summary>
-    /// Enumeration of filter modifiers that can be applied to update filters.
-    /// Defines how filters should be combined and applied in filter chains.
+    /// No modifier applied. Filter is applied as-is.
     /// </summary>
-    [Flags]
-    public enum FilterModifier
-    {
-        /// <summary>
-        /// No modifier applied. Filter is applied as-is.
-        /// </summary>
-        None = 1,
-        
-        /// <summary>
-        /// OR modifier. This filter or the next filter in the chain should match.
-        /// </summary>
-        OrNext = 2,
-        
-        /// <summary>
-        /// NOT modifier. The inverse of this filter should match.
-        /// </summary>
-        Not = 4,
-    }
+    None = 1,
+    
+    /// <summary>
+    /// OR modifier. This filter or the next filter in the chain should match.
+    /// </summary>
+    OrNext = 2,
+    
+    /// <summary>
+    /// NOT modifier. The inverse of this filter should match.
+    /// </summary>
+    Not = 4,
 }

src/Telegrator/Attributes/StateKeeperAttribute.cs

@@ -1,86 +0,0 @@
-using Telegram.Bot.Types;
-using Telegrator.Annotations.StateKeeping;
-using Telegrator.Core.Attributes;
-using Telegrator.Core.Filters;
-using Telegrator.Core.StateKeeping;
-
-namespace Telegrator.Attributes
-{
-    /// <summary>
-    /// Abstract attribute for associating a handler or method with a state keeper.
-    /// Provides logic for state-based filtering and state management.
-    /// </summary>
-    /// <typeparam name="TKey">The type of the key used for state keeping (e.g., chat ID).</typeparam>
-    /// <typeparam name="TState">The type of the state value (e.g., string, int).</typeparam>
-    /// <typeparam name="TKeeper">The type of the state keeper implementation.</typeparam>
-    public abstract class StateKeeperAttribute<TKey, TState, TKeeper> : StateKeeperAttributeBase where TKey : notnull where TState : notnull where TKeeper : StateKeeperBase<TKey, TState>, new()
-    {
-        /*
-        private static readonly TKeeper _shared = new TKeeper();
-        private static readonly Dictionary<TKey, TKeeper> _keyed = [];
-        */
-
-        /// <summary>
-        /// Gets or sets the singleton instance of the state keeper for this attribute type.
-        /// </summary>
-        public static TKeeper Shared { get; } = new TKeeper();
-
-        /// <summary>
-        /// Gets the default state value of this statekeeper.
-        /// </summary>
-        public static TState DefaultState => Shared.DefaultState;
-
-        /// <summary>
-        /// Gets the state value associated with this attribute instance.
-        /// </summary>
-        public TState MyState { get; private set; }
-
-        /// <summary>
-        /// Gets the special state mode for this attribute instance.
-        /// </summary>
-        public SpecialState SpecialState { get; private set; }
-
-        /// <summary>
-        /// Initializes the attribute with a specific state and a custom key resolver.
-        /// </summary>
-        /// <param name="myState">The state value to associate</param>
-        /// <param name="keyResolver">The key resolver for state keeping</param>
-        protected StateKeeperAttribute(TState myState, IStateKeyResolver<TKey> keyResolver) : base(typeof(TKeeper))
-        {
-            Shared.KeyResolver = keyResolver;
-            MyState = myState;
-            SpecialState = SpecialState.None;
-        }
-
-        /// <summary>
-        /// Initializes the attribute with a special state and a custom key resolver.
-        /// </summary>
-        /// <param name="specialState">The special state mode</param>
-        /// <param name="keyResolver">The key resolver for state keeping</param>
-        protected StateKeeperAttribute(SpecialState specialState, IStateKeyResolver<TKey> keyResolver) : base(typeof(TKeeper))
-        {
-            Shared.KeyResolver = keyResolver;
-            MyState = Shared.DefaultState;
-            SpecialState = specialState;
-        }
-
-        /// <summary>
-        /// Determines whether the current update context passes the state filter.
-        /// </summary>
-        /// <param name="context">The filter execution context</param>
-        /// <returns>True if the state matches the filter; otherwise, false.</returns>
-        public override bool CanPass(FilterExecutionContext<Update> context)
-        {
-            if (SpecialState == SpecialState.AnyState)
-                return true;
-
-            if (!Shared.TryGetState(context.Input, out TState? state))
-                return SpecialState == SpecialState.NoState;
-
-            if (state == null)
-                return false;
-
-            return MyState.Equals(state);
-        }
-    }
-}

src/Telegrator/Attributes/UpdateFilterAttribute.cs

@@ -3,83 +3,82 @@ using Telegrator.Core.Attributes;
 using Telegrator.Core.Filters;
 using Telegrator.Filters;
 
-namespace Telegrator.Attributes
+namespace Telegrator.Attributes;
+
+/// <summary>
+/// Abstract base attribute for defining update filters for a specific type of update target.
+/// Provides logic for filter composition, modifier processing, and target extraction.
+/// </summary>
+/// <typeparam name="T">The type of the update target to filter (e.g., Message, Update).</typeparam>
+public abstract class UpdateFilterAttribute<T> : UpdateFilterAttributeBase where T : class
 {
     /// <summary>
-    /// Abstract base attribute for defining update filters for a specific type of update target.
-    /// Provides logic for filter composition, modifier processing, and target extraction.
+    /// Gets the compiled anonymous filter for this attribute.
     /// </summary>
-    /// <typeparam name="T">The type of the update target to filter (e.g., Message, Update).</typeparam>
-    public abstract class UpdateFilterAttribute<T> : UpdateFilterAttributeBase where T : class
+    public override IFilter<Update> AnonymousFilter { get; protected set; }
+
+    /// <summary>
+    /// Gets the compiled filter logic for the update target.
+    /// </summary>
+    public IFilter<T> UpdateFilter { get; protected set; }
+
+    /// <summary>
+    /// Empty constructor for internal using
+    /// </summary>
+    internal UpdateFilterAttribute()
     {
-        /// <summary>
-        /// Gets the compiled anonymous filter for this attribute.
-        /// </summary>
-        public override IFilter<Update> AnonymousFilter { get; protected set; }
-
-        /// <summary>
-        /// Gets the compiled filter logic for the update target.
-        /// </summary>
-        public IFilter<T> UpdateFilter { get; protected set; }
-
-        /// <summary>
-        /// Empty constructor for internal using
-        /// </summary>
-        internal UpdateFilterAttribute()
-        {
-            AnonymousFilter = null!;
-            UpdateFilter = null!;
-            _ = 0xBAD + 0xC0DE;
-        }
-
-        /// <summary>
-        /// Initializes the attribute with one or more filters for the update target.
-        /// </summary>
-        /// <param name="filters">The filters to compose</param>
-        protected UpdateFilterAttribute(params IFilter<T>[] filters)
-        {
-            string name = GetType().Name;
-            UpdateFilter = new CompiledFilter<T>(name, filters);
-            AnonymousFilter = AnonymousTypeFilter.Compile(name, UpdateFilter, GetFilterringTarget);
-        }
-
-        /// <summary>
-        /// Initializes the attribute with a precompiled filter for the update target.
-        /// </summary>
-        /// <param name="updateFilter">The compiled filter</param>
-        protected UpdateFilterAttribute(IFilter<T> updateFilter)
-        {
-            string name = GetType().Name;
-            UpdateFilter = updateFilter;
-            AnonymousFilter = AnonymousTypeFilter.Compile(name, UpdateFilter, GetFilterringTarget);
-        }
-
-        /// <summary>
-        /// Processes filter modifiers and combines this filter with the previous one if needed.
-        /// </summary>
-        /// <param name="previous">The previous filter attribute in the chain</param>
-        /// <returns>True if the OrNext modifier is set; otherwise, false.</returns>
-        public override sealed bool ProcessModifiers(UpdateFilterAttributeBase? previous)
-        {
-            if (Modifiers.HasFlag(FilterModifier.Not))
-                AnonymousFilter = Filter<T>.Not(AnonymousFilter);
-
-            if (previous is not null)
-            {
-                if (previous.Modifiers.HasFlag(FilterModifier.OrNext))
-                {
-                    AnonymousFilter = Filter<Update>.Or(previous.AnonymousFilter, AnonymousFilter);
-                }
-            }
-
-            return Modifiers.HasFlag(FilterModifier.OrNext);
-        }
-
-        /// <summary>
-        /// Extracts the filtering target of type <typeparamref name="T"/> from the given update.
-        /// </summary>
-        /// <param name="update">The Telegram update</param>
-        /// <returns>The target object to filter, or null if not applicable</returns>
-        public abstract T? GetFilterringTarget(Update update);
+        AnonymousFilter = null!;
+        UpdateFilter = null!;
+        _ = 0xBAD + 0xC0DE;
     }
+
+    /// <summary>
+    /// Initializes the attribute with one or more filters for the update target.
+    /// </summary>
+    /// <param name="filters">The filters to compose</param>
+    protected UpdateFilterAttribute(params IFilter<T>[] filters)
+    {
+        string name = GetType().Name;
+        UpdateFilter = new CompiledFilter<T>(name, filters);
+        AnonymousFilter = AnonymousTypeFilter.Compile(name, UpdateFilter, GetFilterringTarget);
+    }
+
+    /// <summary>
+    /// Initializes the attribute with a precompiled filter for the update target.
+    /// </summary>
+    /// <param name="updateFilter">The compiled filter</param>
+    protected UpdateFilterAttribute(IFilter<T> updateFilter)
+    {
+        string name = GetType().Name;
+        UpdateFilter = updateFilter;
+        AnonymousFilter = AnonymousTypeFilter.Compile(name, UpdateFilter, GetFilterringTarget);
+    }
+
+    /// <summary>
+    /// Processes filter modifiers and combines this filter with the previous one if needed.
+    /// </summary>
+    /// <param name="previous">The previous filter attribute in the chain</param>
+    /// <returns>True if the OrNext modifier is set; otherwise, false.</returns>
+    public override sealed bool ProcessModifiers(UpdateFilterAttributeBase? previous)
+    {
+        if (Modifiers.HasFlag(FilterModifier.Not))
+            AnonymousFilter = Filter<T>.Not(AnonymousFilter);
+
+        if (previous is not null)
+        {
+            if (previous.Modifiers.HasFlag(FilterModifier.OrNext))
+            {
+                AnonymousFilter = Filter<Update>.Or(previous.AnonymousFilter, AnonymousFilter);
+            }
+        }
+
+        return Modifiers.HasFlag(FilterModifier.OrNext);
+    }
+
+    /// <summary>
+    /// Extracts the filtering target of type <typeparamref name="T"/> from the given update.
+    /// </summary>
+    /// <param name="update">The Telegram update</param>
+    /// <returns>The target object to filter, or null if not applicable</returns>
+    public abstract T? GetFilterringTarget(Update update);
 }

src/Telegrator/Attributes/UpdateHandlerAttribute.cs

@@ -2,45 +2,44 @@
 using Telegrator.Core.Attributes;
 using Telegrator.Core.Handlers;
 
-namespace Telegrator.Attributes
+namespace Telegrator.Attributes;
+
+/// <summary>
+/// Abstract base attribute for marking update handler classes.
+/// Provides a type-safe way to associate handler types with specific update types and importance settings.
+/// </summary>
+/// <typeparam name="T">The type of the update handler that this attribute is applied to.</typeparam>
+public abstract class UpdateHandlerAttribute<T> : UpdateHandlerAttributeBase where T : UpdateHandlerBase
 {
     /// <summary>
-    /// Abstract base attribute for marking update handler classes.
-    /// Provides a type-safe way to associate handler types with specific update types and importance settings.
+    /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
     /// </summary>
-    /// <typeparam name="T">The type of the update handler that this attribute is applied to.</typeparam>
-    public abstract class UpdateHandlerAttribute<T> : UpdateHandlerAttributeBase where T : UpdateHandlerBase
-    {
-        /// <summary>
-        /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
-        /// </summary>
-        /// <param name="updateType">The type of update that this handler can process.</param>
-        protected UpdateHandlerAttribute(UpdateType updateType)
-            : base([typeof(T)], updateType, 0) { }
+    /// <param name="updateType">The type of update that this handler can process.</param>
+    protected UpdateHandlerAttribute(UpdateType updateType)
+        : base([typeof(T)], updateType, 0) { }
 
-        /// <summary>
-        /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
-        /// </summary>
-        /// <param name="updateType">The type of update that this handler can process.</param>
-        /// <param name="importance">The importance level for this handler</param>
-        protected UpdateHandlerAttribute(UpdateType updateType, int importance)
-            : base([typeof(T)], updateType, importance) { }
+    /// <summary>
+    /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
+    /// </summary>
+    /// <param name="updateType">The type of update that this handler can process.</param>
+    /// <param name="importance">The importance level for this handler</param>
+    protected UpdateHandlerAttribute(UpdateType updateType, int importance)
+        : base([typeof(T)], updateType, importance) { }
 
-        /// <summary>
-        /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
-        /// </summary>
-        /// <param name="types">Additional suported types.</param>
-        /// <param name="updateType">The type of update that this handler can process.</param>
-        protected UpdateHandlerAttribute(Type[] types, UpdateType updateType)
-            : base([..types, typeof(T)], updateType, 0) { }
+    /// <summary>
+    /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
+    /// </summary>
+    /// <param name="types">Additional suported types.</param>
+    /// <param name="updateType">The type of update that this handler can process.</param>
+    protected UpdateHandlerAttribute(Type[] types, UpdateType updateType)
+        : base([..types, typeof(T)], updateType, 0) { }
 
-        /// <summary>
-        /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
-        /// </summary>
-        /// <param name="types">Additional suported types.</param>
-        /// <param name="updateType">The type of update that this handler can process.</param>
-        /// <param name="importance">The importance level for this handler</param>
-        protected UpdateHandlerAttribute(Type[] types, UpdateType updateType, int importance)
-            : base([.. types, typeof(T)], updateType, importance) { }
-    }
+    /// <summary>
+    /// Initializes new instance of <see cref="UpdateHandlerAttribute{T}"/>
+    /// </summary>
+    /// <param name="types">Additional suported types.</param>
+    /// <param name="updateType">The type of update that this handler can process.</param>
+    /// <param name="importance">The importance level for this handler</param>
+    protected UpdateHandlerAttribute(Type[] types, UpdateType updateType, int importance)
+        : base([.. types, typeof(T)], updateType, importance) { }
 }

src/Telegrator/Core/Attributes/StateKeeperAttributeBase.cs

@@ -1,35 +0,0 @@
-using Telegram.Bot.Types;
-using Telegrator.Core.Filters;
-using Telegrator.Core.Handlers;
-using Telegrator.Core.StateKeeping;
-
-namespace Telegrator.Core.Attributes
-{
-    /// <summary>
-    /// Sets the state in which the <see cref="UpdateHandlerBase"/> can be executed
-    /// </summary>
-    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
-    public abstract class StateKeeperAttributeBase : Attribute, IFilter<Update>
-    {
-        /// <inheritdoc/>
-        public bool IsCollectible => GetType().HasPublicProperties();
-
-        /// <summary>
-        /// Creates a new instance <see cref="StateKeeperBase{TKey, TState}"/>
-        /// </summary>
-        /// <param name="stateKeeperType"></param>
-        /// <exception cref="ArgumentException"></exception>
-        protected StateKeeperAttributeBase(Type stateKeeperType)
-        {
-            if (!stateKeeperType.IsAssignableToGenericType(typeof(StateKeeperBase<,>)))
-                throw new ArgumentException(stateKeeperType + " is not a StateKeeperBase", nameof(stateKeeperType));
-        }
-
-        /// <summary>
-        /// Realizes a <see cref="IFilter{T}"/> for validation of the current <see cref="StateKeeperBase{TKey, TState}"/> in the polling routing
-        /// </summary>
-        /// <param name="context"></param>
-        /// <returns></returns>
-        public abstract bool CanPass(FilterExecutionContext<Update> context);
-    }
-}

src/Telegrator/Core/Attributes/UpdateFilterAttributeBase.cs

@@ -5,43 +5,42 @@ using Telegrator.Core.Filters;
 using Telegrator.Core.Handlers;
 using Telegrator.Filters;
 
-namespace Telegrator.Core.Attributes
+namespace Telegrator.Core.Attributes;
+
+/// <summary>
+/// Defines the <see cref="IFilter{T}"/> to <see cref="Update"/> validation for entry into execution of the <see cref="UpdateHandlerBase"/>
+/// </summary>
+[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
+public abstract class UpdateFilterAttributeBase : Attribute
 {
     /// <summary>
-    /// Defines the <see cref="IFilter{T}"/> to <see cref="Update"/> validation for entry into execution of the <see cref="UpdateHandlerBase"/>
+    /// Gets the <see cref="UpdateType"/>'s that <see cref="UpdateHandlerBase"/> processing
     /// </summary>
-    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
-    public abstract class UpdateFilterAttributeBase : Attribute
+    public abstract UpdateType[] AllowedTypes { get; }
+
+    /// <summary>
+    /// Gets the <see cref="IFilter{T}"/> that <see cref="UpdateHandlerBase"/> processing
+    /// </summary>
+    public abstract IFilter<Update> AnonymousFilter { get; protected set; }
+
+    /// <summary>
+    /// Gets or sets the filter modifiers that affect how this filter is combined with others.
+    /// </summary>
+    public FilterModifier Modifiers { get; set; }
+
+    /// <summary>
+    /// Creates a new instance of <see cref="UpdateHandlerAttributeBase"/>
+    /// </summary>
+    /// <exception cref="ArgumentException"></exception>
+    protected internal UpdateFilterAttributeBase()
     {
-        /// <summary>
-        /// Gets the <see cref="UpdateType"/>'s that <see cref="UpdateHandlerBase"/> processing
-        /// </summary>
-        public abstract UpdateType[] AllowedTypes { get; }
-
-        /// <summary>
-        /// Gets the <see cref="IFilter{T}"/> that <see cref="UpdateHandlerBase"/> processing
-        /// </summary>
-        public abstract IFilter<Update> AnonymousFilter { get; protected set; }
-
-        /// <summary>
-        /// Gets or sets the filter modifiers that affect how this filter is combined with others.
-        /// </summary>
-        public FilterModifier Modifiers { get; set; }
-
-        /// <summary>
-        /// Creates a new instance of <see cref="UpdateHandlerAttributeBase"/>
-        /// </summary>
-        /// <exception cref="ArgumentException"></exception>
-        protected internal UpdateFilterAttributeBase()
-        {
-            if (AllowedTypes.Length == 0)
-                throw new ArgumentException();
-        }
-
-        /// <summary>
-        /// Determines the logic of filter modifiers. Exceptionally internal implementation</summary>
-        /// <param name="previous"></param>
-        /// <returns></returns>
-        public abstract bool ProcessModifiers(UpdateFilterAttributeBase? previous);
+        if (AllowedTypes.Length == 0)
+            throw new ArgumentException();
     }
+
+    /// <summary>
+    /// Determines the logic of filter modifiers. Exceptionally internal implementation</summary>
+    /// <param name="previous"></param>
+    /// <returns></returns>
+    public abstract bool ProcessModifiers(UpdateFilterAttributeBase? previous);
 }

src/Telegrator/Core/Attributes/UpdateHandlerAttributeBase.cs

@@ -4,79 +4,78 @@ using Telegrator.Core.Descriptors;
 using Telegrator.Core.Filters;
 using Telegrator.Core.Handlers;
 
-namespace Telegrator.Core.Attributes
+namespace Telegrator.Core.Attributes;
+
+/// <summary>
+/// Defines the <see cref="UpdateType"/>'s and validator (<see cref="IFilter{T}"/>) of the <see cref="Update"/> that <see cref="UpdateHandlerBase"/> will process
+/// </summary>
+[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
+public abstract class UpdateHandlerAttributeBase : Attribute, IFilter<Update>
 {
+    /// <inheritdoc/>
+    public bool IsCollectible => GetType().HasPublicProperties();
+
     /// <summary>
-    /// Defines the <see cref="UpdateType"/>'s and validator (<see cref="IFilter{T}"/>) of the <see cref="Update"/> that <see cref="UpdateHandlerBase"/> will process
+    /// Gets an array of <see cref="UpdateHandlerBase"/> that this attribute can be attached to
     /// </summary>
-    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
-    public abstract class UpdateHandlerAttributeBase : Attribute, IFilter<Update>
+    public Type[] ExpectingHandlerType { get; private set; }
+    
+    /// <summary>
+    /// Gets an <see cref="UpdateType"/> that handlers processes
+    /// </summary>
+    public UpdateType Type { get; private set; }
+    
+    /// <summary>
+    /// Gets or sets importance of this <see cref="UpdateHandlerBase"/> in same <see cref="UpdateType"/> pool
+    /// </summary>
+    public int Importance { get; set; }
+
+    /// <summary>
+    /// Gets or sets priority of this <see cref="UpdateHandlerBase"/> in same type handlers pool
+    /// </summary>
+    public int Priority { get; set; }
+    
+    /// <summary>
+    /// Gets or sets a value indicating whether to form a fallback report.
+    /// </summary>
+    public bool FormReport { get; set; }
+
+    /// <summary>
+    /// Creates a new instance of <see cref="UpdateHandlerAttributeBase"/>
+    /// </summary>
+    /// <param name="expectingHandlerType">The types of handlers that this attribute can be applied to.</param>
+    /// <param name="updateType">The type of update that this handler processes.</param>
+    /// <param name="importance">The importance level of this handler (default: 0).</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="expectingHandlerType"/> is null.</exception>
+    /// <exception cref="ArgumentException">Thrown when one of the handler types is not a valid handler type.</exception>
+    /// <exception cref="Exception">Thrown when <paramref name="updateType"/> is <see cref="UpdateType.Unknown"/>.</exception>
+    protected internal UpdateHandlerAttributeBase(Type[] expectingHandlerType, UpdateType updateType, int importance = 0)
     {
-        /// <inheritdoc/>
-        public bool IsCollectible => GetType().HasPublicProperties();
-
-        /// <summary>
-        /// Gets an array of <see cref="UpdateHandlerBase"/> that this attribute can be attached to
-        /// </summary>
-        public Type[] ExpectingHandlerType { get; private set; }
+        if (expectingHandlerType == null)
+            throw new ArgumentNullException(nameof(expectingHandlerType));
         
-        /// <summary>
-        /// Gets an <see cref="UpdateType"/> that handlers processes
-        /// </summary>
-        public UpdateType Type { get; private set; }
-        
-        /// <summary>
-        /// Gets or sets importance of this <see cref="UpdateHandlerBase"/> in same <see cref="UpdateType"/> pool
-        /// </summary>
-        public int Importance { get; set; }
+        if (expectingHandlerType.Any(type => !type.IsHandlerAbstract()))
+            throw new ArgumentException("One of expectingHandlerType is not a handler type", nameof(expectingHandlerType));
 
-        /// <summary>
-        /// Gets or sets priority of this <see cref="UpdateHandlerBase"/> in same type handlers pool
-        /// </summary>
-        public int Priority { get; set; }
-        
-        /// <summary>
-        /// Gets or sets a value indicating whether to form a fallback report.
-        /// </summary>
-        public bool FormReport { get; set; }
+        if (updateType == UpdateType.Unknown)
+            throw new Exception();
 
-        /// <summary>
-        /// Creates a new instance of <see cref="UpdateHandlerAttributeBase"/>
-        /// </summary>
-        /// <param name="expectingHandlerType">The types of handlers that this attribute can be applied to.</param>
-        /// <param name="updateType">The type of update that this handler processes.</param>
-        /// <param name="importance">The importance level of this handler (default: 0).</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="expectingHandlerType"/> is null.</exception>
-        /// <exception cref="ArgumentException">Thrown when one of the handler types is not a valid handler type.</exception>
-        /// <exception cref="Exception">Thrown when <paramref name="updateType"/> is <see cref="UpdateType.Unknown"/>.</exception>
-        protected internal UpdateHandlerAttributeBase(Type[] expectingHandlerType, UpdateType updateType, int importance = 0)
-        {
-            if (expectingHandlerType == null)
-                throw new ArgumentNullException(nameof(expectingHandlerType));
-            
-            if (expectingHandlerType.Any(type => !type.IsHandlerAbstract()))
-                throw new ArgumentException("One of expectingHandlerType is not a handler type", nameof(expectingHandlerType));
-
-            if (updateType == UpdateType.Unknown)
-                throw new Exception();
-
-            ExpectingHandlerType = expectingHandlerType;
-            Type = updateType;
-            Importance = importance;
-        }
-
-        /// <summary>
-        /// Gets an <see cref="DescriptorIndexer"/> of this <see cref="UpdateHandlerAttributeBase"/> from <see cref="Importance"/> and <see cref="Priority"/>
-        /// </summary>
-        /// <returns>A descriptor indexer for this handler attribute.</returns>
-        public DescriptorIndexer GetIndexer()
-            => new DescriptorIndexer(0, this);
-
-        /// <summary>
-        /// Validator (<see cref="IFilter{T}"/>) of the <see cref="Update"/> that <see cref="UpdateHandlerBase"/> will process
-        /// </summary>
-        /// <param name="context">The filter execution context containing the update to validate.</param>
-        /// <returns>True if the update passes validation; otherwise, false.</returns>
-        public abstract bool CanPass(FilterExecutionContext<Update> context);
+        ExpectingHandlerType = expectingHandlerType;
+        Type = updateType;
+        Importance = importance;
     }
+
+    /// <summary>
+    /// Gets an <see cref="DescriptorIndexer"/> of this <see cref="UpdateHandlerAttributeBase"/> from <see cref="Importance"/> and <see cref="Priority"/>
+    /// </summary>
+    /// <returns>A descriptor indexer for this handler attribute.</returns>
+    public DescriptorIndexer GetIndexer()
+        => new DescriptorIndexer(0, this);
+
+    /// <summary>
+    /// Validator (<see cref="IFilter{T}"/>) of the <see cref="Update"/> that <see cref="UpdateHandlerBase"/> will process
+    /// </summary>
+    /// <param name="context">The filter execution context containing the update to validate.</param>
+    /// <returns>True if the update passes validation; otherwise, false.</returns>
+    public abstract bool CanPass(FilterExecutionContext<Update> context);
 }

src/Telegrator/Core/Descriptors/DefaultCustomDescriptors.cs

@@ -7,63 +7,62 @@ using Telegrator.Core.Handlers;
 using Telegrator.Handlers;
 using Telegrator.Handlers.Building;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// Descriptor for creating handlers from methods
+/// </summary>
+/// <typeparam name="TUpdate"></typeparam>
+public class MethodHandlerDescriptor<TUpdate> : HandlerDescriptor where TUpdate : class
 {
+    private readonly MethodInfo Method;
+
     /// <summary>
-    /// Descriptor for creating handlers from methods
+    /// Initializes new instance of <see cref="MethodHandlerDescriptor{TUpdate}"/>
     /// </summary>
-    /// <typeparam name="TUpdate"></typeparam>
-    public class MethodHandlerDescriptor<TUpdate> : HandlerDescriptor where TUpdate : class
+    /// <param name="action"></param>
+    public MethodHandlerDescriptor(AbstractHandlerAction<TUpdate> action) : base(DescriptorType.General, typeof(MethodHandler), true)
     {
-        private readonly MethodInfo Method;
+        UpdateHandlerAttributeBase handlerAttribute = HandlerInspector.GetHandlerAttribute(action.Method);
+        IFilter<Update>? stateKeeperAttribute = HandlerInspector.GetStateKeeperAttribute(action.Method);
+        IFilter<Update>[] filters = HandlerInspector.GetFilterAttributes(action.Method, handlerAttribute.Type).ToArray();
 
-        /// <summary>
-        /// Initializes new instance of <see cref="MethodHandlerDescriptor{TUpdate}"/>
-        /// </summary>
-        /// <param name="action"></param>
-        public MethodHandlerDescriptor(AbstractHandlerAction<TUpdate> action) : base(DescriptorType.General, typeof(MethodHandler), true)
+        UpdateType = handlerAttribute.Type;
+        Indexer = handlerAttribute.GetIndexer();
+        Filters = new DescriptorFiltersSet(handlerAttribute, stateKeeperAttribute, filters);
+        DisplayString = HandlerInspector.GetDisplayName(action.Method) ?? action.Method.Name;
+        Method = action.Method;
+        InstanceFactory = () => new MethodHandler(UpdateType);
+        LazyInitialization = handler =>
         {
-            UpdateHandlerAttributeBase handlerAttribute = HandlerInspector.GetHandlerAttribute(action.Method);
-            StateKeeperAttributeBase? stateKeeperAttribute = HandlerInspector.GetStateKeeperAttribute(action.Method);
-            IFilter<Update>[] filters = HandlerInspector.GetFilterAttributes(action.Method, handlerAttribute.Type).ToArray();
+            if (handler is not MethodHandler methodHandler)
+                throw new InvalidDataException();
 
-            UpdateType = handlerAttribute.Type;
-            Indexer = handlerAttribute.GetIndexer();
-            Filters = new DescriptorFiltersSet(handlerAttribute, stateKeeperAttribute, filters);
-            DisplayString = HandlerInspector.GetDisplayName(action.Method) ?? action.Method.Name;
-            Method = action.Method;
-            InstanceFactory = () => new MethodHandler(UpdateType);
-            LazyInitialization = handler =>
-            {
-                if (handler is not MethodHandler methodHandler)
-                    throw new InvalidDataException();
+            methodHandler.Method = Method;
+        };
+    }
 
-                methodHandler.Method = Method;
-            };
-        }
+    private class MethodHandler(UpdateType updateType) : AbstractUpdateHandler<TUpdate>(updateType)
+    {
+        internal MethodInfo Method = null!;
 
-        private class MethodHandler(UpdateType updateType) : AbstractUpdateHandler<TUpdate>(updateType)
+        public override async Task<Result> Execute(IHandlerContainer<TUpdate> container, CancellationToken cancellation)
         {
-            internal MethodInfo Method = null!;
+            if (Method is null)
+                throw new Exception();
 
-            public override async Task<Result> Execute(IHandlerContainer<TUpdate> container, CancellationToken cancellation)
+            if (Method.ReturnType == typeof(void))
             {
-                if (Method is null)
-                    throw new Exception();
+                Method.Invoke(this, [container, cancellation]);
+                return Result.Ok();
+            }
+            else
+            {
+                object branchReturn = Method.Invoke(this, [container, cancellation]);
+                if (branchReturn is not Task<Result> branchTask)
+                    throw new InvalidOperationException();
 
-                if (Method.ReturnType == typeof(void))
-                {
-                    Method.Invoke(this, [container, cancellation]);
-                    return Result.Ok();
-                }
-                else
-                {
-                    object branchReturn = Method.Invoke(this, [container, cancellation]);
-                    if (branchReturn is not Task<Result> branchTask)
-                        throw new InvalidOperationException();
-
-                    return await branchTask;
-                }
+                return await branchTask;
             }
         }
     }

src/Telegrator/Core/Descriptors/DescribedHandlerDescriptor.cs

@@ -1,129 +1,136 @@
 using Telegram.Bot;
 using Telegram.Bot.Types;
-using Telegrator.Core;
 using Telegrator.Core.Filters;
 using Telegrator.Core.Handlers;
+using Telegrator.Core.States;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// Contains information about a described handler, including its context, client, and execution logic.
+/// </summary>
+public class DescribedHandlerDescriptor
 {
+    private readonly ManualResetEventSlim ResetEvent = new ManualResetEventSlim(false);
+
     /// <summary>
-    /// Contains information about a described handler, including its context, client, and execution logic.
+    /// Descriptor from that handler was described from.
     /// </summary>
-    public class DescribedHandlerDescriptor
+    public HandlerDescriptor From { get; }
+
+    /// <summary>
+    /// The update router associated with this handler.
+    /// </summary>
+    public IUpdateRouter UpdateRouter { get; }
+
+    /// <summary>
+    /// The awaiting provider to fetch new updates inside handler
+    /// </summary>
+    public IAwaitingProvider AwaitingProvider { get; }
+    
+    /// <summary>
+    /// The state storage to handling state machines
+    /// </summary>
+    public IStateStorage StateStorage { get; }
+
+    /// <summary>
+    /// The Telegram bot client used for this handler.
+    /// </summary>
+    public ITelegramBotClient Client { get; }
+
+    /// <summary>
+    /// The handler instance being described.
+    /// </summary>
+    public UpdateHandlerBase HandlerInstance { get; }
+
+    /// <summary>
+    /// Extra data associated with the handler execution.
+    /// </summary>
+    public Dictionary<string, object> ExtraData { get; }
+
+    /// <summary>
+    /// List of completed filters for this handler.
+    /// </summary>
+    public CompletedFiltersList CompletedFilters { get; }
+
+    /// <summary>
+    /// The update being handled.
+    /// </summary>
+    public Update HandlingUpdate { get; }
+
+    /// <summary>
+    /// Lifetime token for the handler instance.
+    /// </summary>
+    public HandlerLifetimeToken HandlerLifetime => HandlerInstance.LifetimeToken;
+
+    /// <summary>
+    /// Display string for the handler (for debugging or logging).
+    /// </summary>
+    public string DisplayString { get; set; }
+
+    /// <summary>
+    /// The final execution result.
+    /// </summary>
+    public Result? Result { get; private set; }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DescribedHandlerDescriptor"/> class.
+    /// </summary>
+    /// <param name="fromDescriptor">The descriptor from which this handler was described.</param>
+    /// <param name="updateRouter">The update router.</param>
+    /// <param name="awaitingProvider">The awaiting provider.</param>
+    /// <param name="stateStorage">The state storage.</param>
+    /// <param name="client">The Telegram bot client.</param>
+    /// <param name="handlerInstance">The handler instance.</param>
+    /// <param name="filterContext">The filter execution context.</param>
+    /// <param name="displayString">Optional display string.</param>
+    public DescribedHandlerDescriptor(
+        HandlerDescriptor fromDescriptor,
+        IUpdateRouter updateRouter,
+        IAwaitingProvider awaitingProvider,
+        IStateStorage stateStorage,
+        ITelegramBotClient client,
+        UpdateHandlerBase handlerInstance,
+        FilterExecutionContext<Update> filterContext,
+        string? displayString)
     {
-        private readonly ManualResetEventSlim ResetEvent = new ManualResetEventSlim(false);
-
-        /// <summary>
-        /// Descriptor from that handler was described from.
-        /// </summary>
-        public HandlerDescriptor From { get; }
-
-        /// <summary>
-        /// The update router associated with this handler.
-        /// </summary>
-        public IUpdateRouter UpdateRouter { get; }
-
-        /// <summary>
-        /// The awaiting provider to fetch new updates inside handler
-        /// </summary>
-        public IAwaitingProvider AwaitingProvider { get; }
-
-        /// <summary>
-        /// The Telegram bot client used for this handler.
-        /// </summary>
-        public ITelegramBotClient Client { get; }
-
-        /// <summary>
-        /// The handler instance being described.
-        /// </summary>
-        public UpdateHandlerBase HandlerInstance { get; }
-
-        /// <summary>
-        /// Extra data associated with the handler execution.
-        /// </summary>
-        public Dictionary<string, object> ExtraData { get; }
-
-        /// <summary>
-        /// List of completed filters for this handler.
-        /// </summary>
-        public CompletedFiltersList CompletedFilters { get; }
-
-        /// <summary>
-        /// The update being handled.
-        /// </summary>
-        public Update HandlingUpdate { get; }
-
-        /// <summary>
-        /// Lifetime token for the handler instance.
-        /// </summary>
-        public HandlerLifetimeToken HandlerLifetime => HandlerInstance.LifetimeToken;
-
-        /// <summary>
-        /// Display string for the handler (for debugging or logging).
-        /// </summary>
-        public string DisplayString { get; set; }
-
-        /// <summary>
-        /// The final execution result.
-        /// </summary>
-        public Result? Result { get; private set; }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="DescribedHandlerDescriptor"/> class.
-        /// </summary>
-        /// <param name="fromDescriptor">The descriptor from which this handler was described.</param>
-        /// <param name="updateRouter">The update router.</param>
-        /// <param name="awaitingProvider">The awaiting provider.</param>
-        /// <param name="client">The Telegram bot client.</param>
-        /// <param name="handlerInstance">The handler instance.</param>
-        /// <param name="filterContext">The filter execution context.</param>
-        /// <param name="displayString">Optional display string.</param>
-        public DescribedHandlerDescriptor(
-            HandlerDescriptor fromDescriptor,
-            IUpdateRouter updateRouter,
-            IAwaitingProvider awaitingProvider,
-            ITelegramBotClient client,
-            UpdateHandlerBase handlerInstance,
-            FilterExecutionContext<Update> filterContext,
-            string? displayString)
-        {
-            From = fromDescriptor;
-            UpdateRouter = updateRouter;
-            AwaitingProvider = awaitingProvider;
-            Client = client;
-            HandlerInstance = handlerInstance;
-            ExtraData = filterContext.Data;
-            CompletedFilters = filterContext.CompletedFilters;
-            HandlingUpdate = filterContext.Update;
-            DisplayString = displayString ?? fromDescriptor.HandlerType.Name;
-        }
-
-        /// <summary>
-        /// Waits for the handler execution result.
-        /// </summary>
-        /// <param name="cancellationToken">The cancellation token.</param>
-        public async Task AwaitResult(CancellationToken cancellationToken)
-        {
-            await Task.Yield();
-            ResetEvent.Reset();
-            ResetEvent.Wait(cancellationToken);
-        }
-
-        /// <summary>
-        /// Reports the execution result and signals completion.
-        /// </summary>
-        /// <param name="result">The execution result.</param>
-        public void ReportResult(Result? result)
-        {
-            if (result != null)
-                throw new InvalidOperationException("Result already reported");
-
-            Result = result;
-            ResetEvent.Set();
-        }
-
-        /// <inheritdoc/>
-        public override string ToString()
-            => DisplayString ?? From.HandlerType.Name;
+        From = fromDescriptor;
+        UpdateRouter = updateRouter;
+        AwaitingProvider = awaitingProvider;
+        StateStorage = stateStorage;
+        Client = client;
+        HandlerInstance = handlerInstance;
+        ExtraData = filterContext.Data;
+        CompletedFilters = filterContext.CompletedFilters;
+        HandlingUpdate = filterContext.Update;
+        DisplayString = displayString ?? fromDescriptor.HandlerType.Name;
     }
+
+    /// <summary>
+    /// Waits for the handler execution result.
+    /// </summary>
+    /// <param name="cancellationToken">The cancellation token.</param>
+    public async Task AwaitResult(CancellationToken cancellationToken)
+    {
+        await Task.Yield();
+        ResetEvent.Reset();
+        ResetEvent.Wait(cancellationToken);
+    }
+
+    /// <summary>
+    /// Reports the execution result and signals completion.
+    /// </summary>
+    /// <param name="result">The execution result.</param>
+    public void ReportResult(Result? result)
+    {
+        if (Result != null)
+            throw new InvalidOperationException("Result already reported");
+
+        Result = result;
+        ResetEvent.Set();
+    }
+
+    /// <inheritdoc/>
+    public override string ToString()
+        => DisplayString ?? From.HandlerType.Name;
 }

src/Telegrator/Core/Descriptors/DescriptorAspectsSet.cs

@@ -1,80 +1,79 @@
 using Telegrator.Aspects;
 using Telegrator.Core.Handlers;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// Manages the execution of pre and post-execution aspects for a handler.
+/// This class coordinates between self-processing (handler implements interfaces) 
+/// and typed processing (external processor classes).
+/// </summary>
+public sealed class DescriptorAspectsSet
 {
     /// <summary>
-    /// Manages the execution of pre and post-execution aspects for a handler.
-    /// This class coordinates between self-processing (handler implements interfaces) 
-    /// and typed processing (external processor classes).
+    /// Gets the type of the external pre-processor, if specified via <see cref="BeforeExecutionAttribute{T}"/>.
     /// </summary>
-    public sealed class DescriptorAspectsSet
+    public Type? TypedPre { get; private set; }
+
+    /// <summary>
+    /// Gets the type of the external post-processor, if specified via <see cref="AfterExecutionAttribute{T}"/>.
+    /// </summary>
+    public Type? TypedPost { get; private set; }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DescriptorAspectsSet"/> class.
+    /// </summary>
+    /// <param name="typedPre">The type of external pre-processor, if any.</param>
+    /// <param name="typedPost">The type of external post-processor, if any.</param>
+    public DescriptorAspectsSet(Type? typedPre, Type? typedPost)
     {
-        /// <summary>
-        /// Gets the type of the external pre-processor, if specified via <see cref="BeforeExecutionAttribute{T}"/>.
-        /// </summary>
-        public Type? TypedPre { get; private set; }
+        TypedPre = typedPre;
+        TypedPost = typedPost;
+    }
 
-        /// <summary>
-        /// Gets the type of the external post-processor, if specified via <see cref="AfterExecutionAttribute{T}"/>.
-        /// </summary>
-        public Type? TypedPost { get; private set; }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="DescriptorAspectsSet"/> class.
-        /// </summary>
-        /// <param name="typedPre">The type of external pre-processor, if any.</param>
-        /// <param name="typedPost">The type of external post-processor, if any.</param>
-        public DescriptorAspectsSet(Type? typedPre, Type? typedPost)
+    /// <summary>
+    /// Executes the pre-execution aspect for the handler.
+    /// </summary>
+    /// <param name="handler">The handler instance.</param>
+    /// <param name="container">The handler container with update context.</param>
+    /// <param name="cancellationToken"></param>
+    /// <returns>A <see cref="Result"/> indicating whether execution should continue.</returns>
+    /// <exception cref="InvalidOperationException">Thrown when handler claims to implement <see cref="IPreProcessor"/> but doesn't.</exception>
+    public async Task<Result> ExecutePre(UpdateHandlerBase handler, IHandlerContainer container, CancellationToken cancellationToken)
+    {
+        if (handler is  IPreProcessor preProcessor)
         {
-            TypedPre = typedPre;
-            TypedPost = typedPost;
+            return await preProcessor.BeforeExecution(container, cancellationToken).ConfigureAwait(false);
+        }
+        else if (TypedPre != null)
+        {
+            preProcessor = (IPreProcessor)Activator.CreateInstance(TypedPre);
+            return await preProcessor.BeforeExecution(container, cancellationToken).ConfigureAwait(false);
         }
 
-        /// <summary>
-        /// Executes the pre-execution aspect for the handler.
-        /// </summary>
-        /// <param name="handler">The handler instance.</param>
-        /// <param name="container">The handler container with update context.</param>
-        /// <param name="cancellationToken"></param>
-        /// <returns>A <see cref="Result"/> indicating whether execution should continue.</returns>
-        /// <exception cref="InvalidOperationException">Thrown when handler claims to implement <see cref="IPreProcessor"/> but doesn't.</exception>
-        public async Task<Result> ExecutePre(UpdateHandlerBase handler, IHandlerContainer container, CancellationToken cancellationToken)
-        {
-            if (handler is  IPreProcessor preProcessor)
-            {
-                return await preProcessor.BeforeExecution(container, cancellationToken).ConfigureAwait(false);
-            }
-            else if (TypedPre != null)
-            {
-                preProcessor = (IPreProcessor)Activator.CreateInstance(TypedPre);
-                return await preProcessor.BeforeExecution(container, cancellationToken).ConfigureAwait(false);
-            }
+        return Result.Ok();
+    }
 
-            return Result.Ok();
+    /// <summary>
+    /// Executes the post-execution aspect for the handler.
+    /// </summary>
+    /// <param name="handler">The handler instance.</param>
+    /// <param name="container">The handler container with update context.</param>
+    /// <param name="cancellationToken"></param>
+    /// <returns>A <see cref="Result"/> indicating the final execution result.</returns>
+    /// <exception cref="InvalidOperationException">Thrown when handler claims to implement <see cref="IPostProcessor"/> but doesn't.</exception>
+    public async Task<Result> ExecutePost(UpdateHandlerBase handler, IHandlerContainer container, CancellationToken cancellationToken)
+    {
+        if (handler is IPostProcessor postProcessor)
+        {
+            return await postProcessor.AfterExecution(container, cancellationToken).ConfigureAwait(false);
+        }
+        else if (TypedPost != null)
+        {
+            postProcessor = (IPostProcessor)Activator.CreateInstance(TypedPost);
+            return await postProcessor.AfterExecution(container, cancellationToken).ConfigureAwait(false);
         }
 
-        /// <summary>
-        /// Executes the post-execution aspect for the handler.
-        /// </summary>
-        /// <param name="handler">The handler instance.</param>
-        /// <param name="container">The handler container with update context.</param>
-        /// <param name="cancellationToken"></param>
-        /// <returns>A <see cref="Result"/> indicating the final execution result.</returns>
-        /// <exception cref="InvalidOperationException">Thrown when handler claims to implement <see cref="IPostProcessor"/> but doesn't.</exception>
-        public async Task<Result> ExecutePost(UpdateHandlerBase handler, IHandlerContainer container, CancellationToken cancellationToken)
-        {
-            if (handler is IPostProcessor postProcessor)
-            {
-                return await postProcessor.AfterExecution(container, cancellationToken).ConfigureAwait(false);
-            }
-            else if (TypedPost != null)
-            {
-                postProcessor = (IPostProcessor)Activator.CreateInstance(TypedPost);
-                return await postProcessor.AfterExecution(container, cancellationToken).ConfigureAwait(false);
-            }
-
-            return Result.Ok();
-        }
+        return Result.Ok();
     }
 }

src/Telegrator/Core/Descriptors/DescriptorFiltersSet.cs

@@ -3,143 +3,142 @@ using Telegrator.Core.Filters;
 using Telegrator.Handlers.Diagnostics;
 using Telegrator.Logging;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// Represents a set of filters for a handler descriptor, including update and state keeper validators.
+/// </summary>
+public sealed class DescriptorFiltersSet
 {
     /// <summary>
-    /// Represents a set of filters for a handler descriptor, including update and state keeper validators.
+    /// Validator for the update object.
     /// </summary>
-    public sealed class DescriptorFiltersSet
+    public IFilter<Update>? UpdateValidator { get; set; }
+
+    /// <summary>
+    /// Validator for the state keeper.
+    /// </summary>
+    public IFilter<Update>? StateKeeperValidator { get; set; }
+
+    /// <summary>
+    /// Array of update filters.
+    /// </summary>
+    public IFilter<Update>[]? UpdateFilters { get; set; }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DescriptorFiltersSet"/> class.
+    /// </summary>
+    /// <param name="updateValidator">Validator for the update object.</param>
+    /// <param name="stateKeeperValidator">Validator for the state keeper.</param>
+    /// <param name="updateFilters">Array of update filters.</param>
+    public DescriptorFiltersSet(IFilter<Update>? updateValidator, IFilter<Update>? stateKeeperValidator, IFilter<Update>[]? updateFilters)
     {
-        /// <summary>
-        /// Validator for the update object.
-        /// </summary>
-        public IFilter<Update>? UpdateValidator { get; set; }
+        UpdateValidator = updateValidator;
+        StateKeeperValidator = stateKeeperValidator;
+        UpdateFilters = updateFilters;
+    }
 
-        /// <summary>
-        /// Validator for the state keeper.
-        /// </summary>
-        public IFilter<Update>? StateKeeperValidator { get; set; }
+    /// <summary>
+    /// Validates the filter context using all filters in the set.
+    /// </summary>
+    /// <param name="filterContext">The filter execution context.</param>
+    /// <param name="formReport"></param>
+    /// <param name="report"></param>
+    /// <returns>True if all filters pass; otherwise, false.</returns>
+    public Result Validate(FilterExecutionContext<Update> filterContext, bool formReport, ref FiltersFallbackReport report)
+    {
+        bool anyErrors = false;
 
-        /// <summary>
-        /// Array of update filters.
-        /// </summary>
-        public IFilter<Update>[]? UpdateFilters { get; set; }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="DescriptorFiltersSet"/> class.
-        /// </summary>
-        /// <param name="updateValidator">Validator for the update object.</param>
-        /// <param name="stateKeeperValidator">Validator for the state keeper.</param>
-        /// <param name="updateFilters">Array of update filters.</param>
-        public DescriptorFiltersSet(IFilter<Update>? updateValidator, IFilter<Update>? stateKeeperValidator, IFilter<Update>[]? updateFilters)
+        if (UpdateValidator != null)
         {
-            UpdateValidator = updateValidator;
-            StateKeeperValidator = stateKeeperValidator;
-            UpdateFilters = updateFilters;
+            bool result = ExecuteFilter(UpdateValidator, filterContext, out Exception? exc);
+
+            if (formReport)
+            {
+                report.UpdateValidator = new FilterFallbackInfo("Validator", UpdateValidator, !result, exc);
+            }
+
+            if (!result)
+            {
+                anyErrors = true;
+                TelegratorLogging.LogTrace("(E) UpdateValidator filter of '{0}' for Update ({1}) didnt pass!", filterContext.Data["handler_name"], filterContext.Update.Id);
+
+                if (!formReport)
+                    return Result.Fault();
+            }
+            else
+            {
+                filterContext.CompletedFilters.Add(UpdateValidator);
+            }
         }
 
-        /// <summary>
-        /// Validates the filter context using all filters in the set.
-        /// </summary>
-        /// <param name="filterContext">The filter execution context.</param>
-        /// <param name="formReport"></param>
-        /// <param name="report"></param>
-        /// <returns>True if all filters pass; otherwise, false.</returns>
-        public Result Validate(FilterExecutionContext<Update> filterContext, bool formReport, ref FiltersFallbackReport report)
+        if (StateKeeperValidator != null)
         {
-            bool anyErrors = false;
+            bool result = ExecuteFilter(StateKeeperValidator, filterContext, out Exception? exc);
 
-            if (UpdateValidator != null)
+            if (formReport)
             {
-                bool result = ExecuteFilter(UpdateValidator, filterContext, out Exception? exc);
+                report.StateKeeperValidator = new FilterFallbackInfo("State", StateKeeperValidator, !result, exc);
+            }
+
+            if (!result)
+            {
+                anyErrors = true;
+                TelegratorLogging.LogTrace("(E) StateKeeperValidator filter of '{0}' for Update ({1}) didnt pass!", filterContext.Data["handler_name"], filterContext.Update.Id);
+
+                if (!formReport)
+                    return Result.Fault();
+            }
+            else
+            {
+                filterContext.CompletedFilters.Add(StateKeeperValidator);
+            }
+        }
+
+        if (UpdateFilters != null)
+        {
+            foreach (IFilter<Update> filter in UpdateFilters)
+            {
+                bool result = ExecuteFilter(filter, filterContext, out Exception? exc);
+                string filterName = filter is INamedFilter named ? named.Name : filter.GetType().Name;
 
                 if (formReport)
                 {
-                    report.UpdateValidator = new FilterFallbackInfo("Validator", UpdateValidator, !result, exc);
+                    report.UpdateFilters.Add(new FilterFallbackInfo(filterName, filter, !result, exc));
                 }
 
                 if (!result)
                 {
                     anyErrors = true;
-                    TelegratorLogging.LogTrace("(E) UpdateValidator filter of '{0}' for Update ({1}) didnt pass!", filterContext.Data["handler_name"], filterContext.Update.Id);
+                    TelegratorLogging.LogTrace("(E) '{0}' filter of '{1}' for Update ({2}) didnt pass!", filterName, filterContext.Data["handler_name"], filterContext.Update.Id);
 
                     if (!formReport)
                         return Result.Fault();
                 }
                 else
                 {
-                    filterContext.CompletedFilters.Add(UpdateValidator);
+                    filterContext.CompletedFilters.Add(filter);
                 }
             }
-
-            if (StateKeeperValidator != null)
-            {
-                bool result = ExecuteFilter(StateKeeperValidator, filterContext, out Exception? exc);
-
-                if (formReport)
-                {
-                    report.StateKeeperValidator = new FilterFallbackInfo("State", StateKeeperValidator, !result, exc);
-                }
-
-                if (!result)
-                {
-                    anyErrors = true;
-                    TelegratorLogging.LogTrace("(E) StateKeeperValidator filter of '{0}' for Update ({1}) didnt pass!", filterContext.Data["handler_name"], filterContext.Update.Id);
-
-                    if (!formReport)
-                        return Result.Fault();
-                }
-                else
-                {
-                    filterContext.CompletedFilters.Add(StateKeeperValidator);
-                }
-            }
-
-            if (UpdateFilters != null)
-            {
-                foreach (IFilter<Update> filter in UpdateFilters)
-                {
-                    bool result = ExecuteFilter(filter, filterContext, out Exception? exc);
-                    string filterName = filter is INamedFilter named ? named.Name : filter.GetType().Name;
-
-                    if (formReport)
-                    {
-                        report.UpdateFilters.Add(new FilterFallbackInfo(filterName, filter, !result, exc));
-                    }
-
-                    if (!result)
-                    {
-                        anyErrors = true;
-                        TelegratorLogging.LogTrace("(E) '{0}' filter of '{1}' for Update ({2}) didnt pass!", filterName, filterContext.Data["handler_name"], filterContext.Update.Id);
-
-                        if (!formReport)
-                            return Result.Fault();
-                    }
-                    else
-                    {
-                        filterContext.CompletedFilters.Add(filter);
-                    }
-                }
-            }
-
-            if (!anyErrors)
-                return Result.Ok();
-
-            return formReport ? Result.Next() : Result.Fault();
         }
 
-        private static bool ExecuteFilter<T>(IFilter<T> filter, FilterExecutionContext<T> context, out Exception? exception) where T : class
+        if (!anyErrors)
+            return Result.Ok();
+
+        return formReport ? Result.Next() : Result.Fault();
+    }
+
+    private static bool ExecuteFilter<T>(IFilter<T> filter, FilterExecutionContext<T> context, out Exception? exception) where T : class
+    {
+        try
         {
-            try
-            {
-                exception = null;
-                return filter.CanPass(context);
-            }
-            catch (Exception ex)
-            {
-                exception = ex;
-                return false;
-            }
+            exception = null;
+            return filter.CanPass(context);
+        }
+        catch (Exception ex)
+        {
+            exception = ex;
+            return false;
         }
     }
 }

src/Telegrator/Core/Descriptors/DescriptorIndexer.cs

@@ -1,88 +1,87 @@
 using Telegrator.Core.Attributes;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// Represents an indexer for handler descriptors, containing importance and priority information.
+/// </summary>
+public readonly struct DescriptorIndexer(int routerIndex, int importance, int priority) : IComparable<DescriptorIndexer>
 {
     /// <summary>
-    /// Represents an indexer for handler descriptors, containing importance and priority information.
+    /// Index of this descriptor when it was added to router
     /// </summary>
-    public readonly struct DescriptorIndexer(int routerIndex, int importance, int priority) : IComparable<DescriptorIndexer>
+    public readonly int RouterIndex = routerIndex;
+
+    /// <summary>
+    /// Of this handlert type
+    /// </summary>
+    public readonly int Importance = importance;
+
+    /// <summary>
+    /// The priority of the handler.
+    /// </summary>
+    public readonly int Priority = priority;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DescriptorIndexer"/> struct from a handler attribute.
+    /// </summary>
+    /// <param name="routerIndex"></param>
+    /// <param name="pollingHandler">The handler attribute.</param>
+    public DescriptorIndexer(int routerIndex, UpdateHandlerAttributeBase pollingHandler)
+        : this(routerIndex, pollingHandler.Importance, pollingHandler.Priority) { }
+
+    /// <summary>
+    /// Returns a new <see cref="DescriptorIndexer"/> with updated priority.
+    /// </summary>
+    /// <param name="priority">The new priority value.</param>
+    /// <returns>A new <see cref="DescriptorIndexer"/> instance.</returns>
+    public DescriptorIndexer UpdatePriority(int priority)
+        => new DescriptorIndexer(RouterIndex, Importance, priority);
+
+    /// <summary>
+    /// Returns a new <see cref="DescriptorIndexer"/> with updated importance.
+    /// </summary>
+    /// <param name="importance">The new importance value.</param>
+    /// <returns>A new <see cref="DescriptorIndexer"/> instance.</returns>
+    public DescriptorIndexer UpdateImportance(int importance)
+        => new DescriptorIndexer(RouterIndex, importance, Priority);
+
+    /// <summary>
+    /// Returns a new <see cref="DescriptorIndexer"/> with updated RouterIndex.
+    /// </summary>
+    /// <param name="routerIndex"></param>
+    /// <returns>A new <see cref="DescriptorIndexer"/> instance.</returns>
+    public DescriptorIndexer UpdateIndex(int routerIndex)
+        => new DescriptorIndexer(routerIndex, Importance, Priority);
+
+    /// <summary>
+    /// Compares this instance to another <see cref="DescriptorIndexer"/>.
+    /// </summary>
+    /// <param name="other">The other indexer to compare to.</param>
+    /// <returns>An integer indicating the relative order.</returns>
+    public int CompareTo(DescriptorIndexer other)
     {
-        /// <summary>
-        /// Index of this descriptor when it was added to router
-        /// </summary>
-        public readonly int RouterIndex = routerIndex;
+        int importanceCmp = Importance.CompareTo(other.Importance);
+        if (importanceCmp != 0)
+            return importanceCmp;
 
-        /// <summary>
-        /// Of this handlert type
-        /// </summary>
-        public readonly int Importance = importance;
+        int priorityCmp = Priority.CompareTo(other.Priority);
+        if (priorityCmp != 0)
+            return priorityCmp;
 
-        /// <summary>
-        /// The priority of the handler.
-        /// </summary>
-        public readonly int Priority = priority;
+        int routerIndexCmp = RouterIndex.CompareTo(other.RouterIndex);
+        if (routerIndexCmp != 0)
+            return routerIndexCmp;
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="DescriptorIndexer"/> struct from a handler attribute.
-        /// </summary>
-        /// <param name="routerIndex"></param>
-        /// <param name="pollingHandler">The handler attribute.</param>
-        public DescriptorIndexer(int routerIndex, UpdateHandlerAttributeBase pollingHandler)
-            : this(routerIndex, pollingHandler.Importance, pollingHandler.Priority) { }
+        return 0;
+    }
 
-        /// <summary>
-        /// Returns a new <see cref="DescriptorIndexer"/> with updated priority.
-        /// </summary>
-        /// <param name="priority">The new priority value.</param>
-        /// <returns>A new <see cref="DescriptorIndexer"/> instance.</returns>
-        public DescriptorIndexer UpdatePriority(int priority)
-            => new DescriptorIndexer(RouterIndex, Importance, priority);
-
-        /// <summary>
-        /// Returns a new <see cref="DescriptorIndexer"/> with updated importance.
-        /// </summary>
-        /// <param name="importance">The new importance value.</param>
-        /// <returns>A new <see cref="DescriptorIndexer"/> instance.</returns>
-        public DescriptorIndexer UpdateImportance(int importance)
-            => new DescriptorIndexer(RouterIndex, importance, Priority);
-
-        /// <summary>
-        /// Returns a new <see cref="DescriptorIndexer"/> with updated RouterIndex.
-        /// </summary>
-        /// <param name="routerIndex"></param>
-        /// <returns>A new <see cref="DescriptorIndexer"/> instance.</returns>
-        public DescriptorIndexer UpdateIndex(int routerIndex)
-            => new DescriptorIndexer(routerIndex, Importance, Priority);
-
-        /// <summary>
-        /// Compares this instance to another <see cref="DescriptorIndexer"/>.
-        /// </summary>
-        /// <param name="other">The other indexer to compare to.</param>
-        /// <returns>An integer indicating the relative order.</returns>
-        public int CompareTo(DescriptorIndexer other)
-        {
-            int importanceCmp = Importance.CompareTo(other.Importance);
-            if (importanceCmp != 0)
-                return importanceCmp;
-
-            int priorityCmp = Priority.CompareTo(other.Priority);
-            if (priorityCmp != 0)
-                return priorityCmp;
-
-            int routerIndexCmp = RouterIndex.CompareTo(other.RouterIndex);
-            if (routerIndexCmp != 0)
-                return routerIndexCmp;
-
-            return 0;
-        }
-
-        /// <summary>
-        /// Returns a string representation of the indexer.
-        /// </summary>
-        /// <returns>A string in the format (C:importance, P:priority).</returns>
-        public override string ToString()
-        {
-            return string.Format("(Ix: {0,2}, Im: {1,2}, Pr: {2,2})", RouterIndex, Importance, Priority);
-        }
+    /// <summary>
+    /// Returns a string representation of the indexer.
+    /// </summary>
+    /// <returns>A string in the format (C:importance, P:priority).</returns>
+    public override string ToString()
+    {
+        return string.Format("(Ix: {0,2}, Im: {1,2}, Pr: {2,2})", RouterIndex, Importance, Priority);
     }
 }

src/Telegrator/Core/Descriptors/HandlerDescriptor.cs

@@ -4,472 +4,469 @@ using Telegrator.Core.Attributes;
 using Telegrator.Core.Filters;
 using Telegrator.Core.Handlers;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// Specifies the type of handler descriptor.
+/// </summary>
+public enum DescriptorType
 {
     /// <summary>
-    /// Specifies the type of handler descriptor.
+    /// General handler descriptor.
     /// </summary>
-    public enum DescriptorType
+    General,
+
+    /// <summary>
+    /// Keyed handler descriptor (uses a service key).
+    /// </summary>
+    Keyed,
+
+    /// <summary>
+    /// Implicit handler descriptor.
+    /// </summary>
+    Implicit,
+
+    /// <summary>
+    /// Singleton handler descriptor (single instance).
+    /// </summary>
+    Singleton
+}
+
+/// <summary>
+/// Describes a handler, its type, filters, and instantiation logic.
+/// </summary>
+public class HandlerDescriptor
+{
+    /// <summary>
+    /// The type of the descriptor.
+    /// </summary>
+    public DescriptorType Type
     {
-        /// <summary>
-        /// General handler descriptor.
-        /// </summary>
-        General,
-
-        /// <summary>
-        /// Keyed handler descriptor (uses a service key).
-        /// </summary>
-        Keyed,
-
-        /// <summary>
-        /// Implicit handler descriptor.
-        /// </summary>
-        Implicit,
-
-        /// <summary>
-        /// Singleton handler descriptor (single instance).
-        /// </summary>
-        Singleton
+        get;
     }
 
     /// <summary>
-    /// Describes a handler, its type, filters, and instantiation logic.
+    /// The type of the handler.
     /// </summary>
-    public class HandlerDescriptor
+    public Type HandlerType
     {
-        /// <summary>
-        /// The type of the descriptor.
-        /// </summary>
-        public DescriptorType Type
-        {
-            get;
-            private set;
-        }
-
-        /// <summary>
-        /// The type of the handler.
-        /// </summary>
-        public Type HandlerType
-        {
-            get;
-            private set;
-        }
-
-        /// <summary>
-        /// The update type handled by this handler.
-        /// </summary>
-        public UpdateType UpdateType
-        {
-            get;
-            protected set;
-        }
-
-        /// <summary>
-        /// The indexer for handler concurrency and priority.
-        /// </summary>
-        public DescriptorIndexer Indexer
-        {
-            get;
-            set;
-        }
-
-        /// <summary>
-        /// Gets or sets a value indicating whether to form a fallback report.
-        /// </summary>
-        public bool FormReport
-        {
-            get;
-            set;
-        }
-
-        /// <summary>
-        /// The set of filters associated with this handler.
-        /// </summary>
-        public DescriptorFiltersSet? Filters
-        {
-            get;
-            protected set;
-        }
-
-        /// <summary>
-        /// Gets or sets the aspects configuration for this handler.
-        /// Contains pre and post-execution processors if the handler uses the aspect system.
-        /// </summary>
-        public DescriptorAspectsSet? Aspects
-        {
-            get;
-            protected set;
-        }
-
-        /// <summary>
-        /// The service key for keyed handlers.
-        /// </summary>
-        public object? ServiceKey
-        {
-            get;
-            protected set;
-        }
-
-        /// <summary>
-        /// Factory for creating handler instances.
-        /// </summary>
-        public Func<UpdateHandlerBase>? InstanceFactory
-        {
-            get;
-            protected set;
-        }
-
-        /// <summary>
-        /// Singleton instance of the handler, if applicable.
-        /// </summary>
-        public UpdateHandlerBase? SingletonInstance
-        {
-            get;
-            protected set;
-        }
-
-        /// <summary>
-        /// Display string for the handler (for debugging or logging).
-        /// </summary>
-        public string? DisplayString
-        {
-            get;
-            set;
-        }
-
-        /// <summary>
-        /// Gets or sets a function for 'lazy' handlers initialization
-        /// </summary>
-        public Action<UpdateHandlerBase>? LazyInitialization
-        {
-            get;
-            set;
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with the specified descriptor type and handler type.
-        /// Automatically inspects the handler type to extract attributes, filters, and configuration.
-        /// </summary>
-        /// <param name="descriptorType">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler to describe</param>
-        /// <param name="dontInspect"></param>
-        /// <exception cref="ArgumentException">Thrown when the handler type is not compatible with the expected handler type</exception>
-        public HandlerDescriptor(DescriptorType descriptorType, Type handlerType, bool dontInspect = false)
-        {
-            Type = descriptorType;
-            HandlerType = handlerType;
-            Filters = new DescriptorFiltersSet(null, null, null);
-
-            if (dontInspect)
-                return;
-
-            UpdateHandlerAttributeBase handlerAttribute = HandlerInspector.GetHandlerAttribute(handlerType);
-            if (handlerAttribute.ExpectingHandlerType != null && !handlerAttribute.ExpectingHandlerType.Contains(handlerType.BaseType))
-                throw new ArgumentException(string.Format("This handler attribute cannot be attached to this class. Attribute can be attached on next handlers : {0}", string.Join(", ", handlerAttribute.ExpectingHandlerType.AsEnumerable())));
-
-            StateKeeperAttributeBase? stateKeeperAttribute = HandlerInspector.GetStateKeeperAttribute(handlerType);
-            IFilter<Update>[] filters = HandlerInspector.GetFilterAttributes(handlerType, handlerAttribute.Type).ToArray();
-
-            UpdateType = handlerAttribute.Type;
-            Indexer = handlerAttribute.GetIndexer();
-            FormReport = handlerAttribute.FormReport;
-            Filters = new DescriptorFiltersSet(handlerAttribute, stateKeeperAttribute, filters);
-            Aspects = HandlerInspector.GetAspects(handlerType);
-            DisplayString = HandlerInspector.GetDisplayName(handlerType);
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class as a keyed handler with the specified service key.
-        /// </summary>
-        /// <param name="handlerType">The type of the handler to describe</param>
-        /// <param name="serviceKey">The service key for dependency injection</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> is null</exception>
-        public HandlerDescriptor(Type handlerType, object serviceKey) : this(DescriptorType.Keyed, handlerType)
-        {
-            ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with all basic properties.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="filters">The set of filters associated with this handler</param>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = filters;
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with singleton instance support.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="filters">The set of filters associated with this handler</param>
-        /// <param name="serviceKey">The service key for dependency injection</param>
-        /// <param name="singletonInstance">The singleton instance of the handler</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="singletonInstance"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters, object serviceKey, UpdateHandlerBase singletonInstance)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = filters;
-            ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
-            SingletonInstance = singletonInstance ?? throw new ArgumentNullException(nameof(singletonInstance));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with instance factory support.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="filters">The set of filters associated with this handler</param>
-        /// <param name="instanceFactory">Factory for creating handler instances</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="instanceFactory"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters, Func<UpdateHandlerBase> instanceFactory)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = filters;
-            InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with service key and instance factory support.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="filters">The set of filters associated with this handler</param>
-        /// <param name="serviceKey">The service key for dependency injection</param>
-        /// <param name="instanceFactory">Factory for creating handler instances</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="instanceFactory"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters, object serviceKey, Func<UpdateHandlerBase> instanceFactory)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = filters;
-            ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
-            InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute and filters.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = pollingHandlerAttribute.Type;
-            Indexer = pollingHandlerAttribute.GetIndexer();
-            Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute, filters, and singleton instance.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        /// <param name="serviceKey">The service key for dependency injection</param>
-        /// <param name="singletonInstance">The singleton instance of the handler</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="singletonInstance"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, UpdateHandlerBase singletonInstance)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = pollingHandlerAttribute.Type;
-            Indexer = pollingHandlerAttribute.GetIndexer();
-            Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
-            ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
-            SingletonInstance = singletonInstance ?? throw new ArgumentNullException(nameof(singletonInstance));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute, filters, and instance factory.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        /// <param name="instanceFactory">Factory for creating handler instances</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="instanceFactory"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, Func<UpdateHandlerBase> instanceFactory)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = pollingHandlerAttribute.Type;
-            Indexer = pollingHandlerAttribute.GetIndexer();
-            Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
-            InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute, filters, service key, and instance factory.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        /// <param name="serviceKey">The service key for dependency injection</param>
-        /// <param name="instanceFactory">Factory for creating handler instances</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="instanceFactory"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, Func<UpdateHandlerBase> instanceFactory)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = pollingHandlerAttribute.Type;
-            Indexer = pollingHandlerAttribute.GetIndexer();
-            Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
-            ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
-            InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter support.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="validateFilter">Optional validation filter</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter and singleton instance support.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="validateFilter">Optional validation filter</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        /// <param name="serviceKey">The service key for dependency injection</param>
-        /// <param name="singletonInstance">The singleton instance of the handler</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="singletonInstance"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, UpdateHandlerBase singletonInstance)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
-            ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
-            SingletonInstance = singletonInstance ?? throw new ArgumentNullException(nameof(singletonInstance));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter and instance factory support.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="validateFilter">Optional validation filter</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        /// <param name="instanceFactory">Factory for creating handler instances</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="instanceFactory"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, Func<UpdateHandlerBase> instanceFactory)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
-            InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter, service key, and instance factory support.
-        /// </summary>
-        /// <param name="type">The type of the descriptor</param>
-        /// <param name="handlerType">The type of the handler</param>
-        /// <param name="updateType">The type of update this handler processes</param>
-        /// <param name="indexer">The indexer for handler concurrency and priority</param>
-        /// <param name="validateFilter">Optional validation filter</param>
-        /// <param name="filters">Optional array of filters to apply</param>
-        /// <param name="stateKeepFilter">Optional state keeping filter</param>
-        /// <param name="serviceKey">The service key for dependency injection</param>
-        /// <param name="instanceFactory">Factory for creating handler instances</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="instanceFactory"/> is null</exception>
-        public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, Func<UpdateHandlerBase> instanceFactory)
-        {
-            Type = type;
-            HandlerType = handlerType;
-            UpdateType = updateType;
-            Indexer = indexer;
-            Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
-            ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
-            InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
-        }
-
-        /// <summary>
-        /// Sets singleton instance of this descriptor
-        /// Throws exception if instance already set
-        /// </summary>
-        /// <param name="instance"></param>
-        /// <exception cref="Exception"></exception>
-        public void SetInstance(UpdateHandlerBase instance)
-        {
-            if (SingletonInstance != null)
-                throw new Exception();
-
-            SingletonInstance = instance;
-        }
-
-        /// <summary>
-        /// Tries to set singleton instance of this descriptor
-        /// </summary>
-        /// <param name="instance"></param>
-        /// <returns></returns>
-        public bool TrySetInstance(UpdateHandlerBase instance)
-        {
-            if (SingletonInstance != null)
-                return false;
-
-            SingletonInstance = instance;
-            return true;
-        }
-
-        /// <inheritdoc/>
-        public override string ToString()
-            => DisplayString ?? HandlerType.Name;
+        get;
     }
+
+    /// <summary>
+    /// The update type handled by this handler.
+    /// </summary>
+    public UpdateType UpdateType
+    {
+        get;
+        protected set;
+    }
+
+    /// <summary>
+    /// The indexer for handler concurrency and priority.
+    /// </summary>
+    public DescriptorIndexer Indexer
+    {
+        get;
+        set;
+    }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether to form a fallback report.
+    /// </summary>
+    public bool FormReport
+    {
+        get;
+        set;
+    }
+
+    /// <summary>
+    /// The set of filters associated with this handler.
+    /// </summary>
+    public DescriptorFiltersSet? Filters
+    {
+        get;
+        protected set;
+    }
+
+    /// <summary>
+    /// Gets or sets the aspects configuration for this handler.
+    /// Contains pre and post-execution processors if the handler uses the aspect system.
+    /// </summary>
+    public DescriptorAspectsSet? Aspects
+    {
+        get;
+        protected set;
+    }
+
+    /// <summary>
+    /// The service key for keyed handlers.
+    /// </summary>
+    public object? ServiceKey
+    {
+        get;
+        protected set;
+    }
+
+    /// <summary>
+    /// Factory for creating handler instances.
+    /// </summary>
+    public Func<UpdateHandlerBase>? InstanceFactory
+    {
+        get;
+        protected set;
+    }
+
+    /// <summary>
+    /// Singleton instance of the handler, if applicable.
+    /// </summary>
+    public UpdateHandlerBase? SingletonInstance
+    {
+        get;
+        protected set;
+    }
+
+    /// <summary>
+    /// Display string for the handler (for debugging or logging).
+    /// </summary>
+    public string? DisplayString
+    {
+        get;
+        set;
+    }
+
+    /// <summary>
+    /// Gets or sets a function for 'lazy' handlers initialization
+    /// </summary>
+    public Action<UpdateHandlerBase>? LazyInitialization
+    {
+        get;
+        set;
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with the specified descriptor type and handler type.
+    /// Automatically inspects the handler type to extract attributes, filters, and configuration.
+    /// </summary>
+    /// <param name="descriptorType">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler to describe</param>
+    /// <param name="dontInspect"></param>
+    /// <exception cref="ArgumentException">Thrown when the handler type is not compatible with the expected handler type</exception>
+    public HandlerDescriptor(DescriptorType descriptorType, Type handlerType, bool dontInspect = false)
+    {
+        Type = descriptorType;
+        HandlerType = handlerType;
+        Filters = new DescriptorFiltersSet(null, null, null);
+
+        if (dontInspect)
+            return;
+
+        UpdateHandlerAttributeBase handlerAttribute = HandlerInspector.GetHandlerAttribute(handlerType);
+        if (handlerAttribute.ExpectingHandlerType?.Contains(handlerType.BaseType) == false)
+            throw new ArgumentException(string.Format("This handler attribute cannot be attached to this class. Attribute can be attached on next handlers : {0}", string.Join(", ", handlerAttribute.ExpectingHandlerType.AsEnumerable())));
+
+        IFilter<Update>? stateKeeperAttribute = HandlerInspector.GetStateKeeperAttribute(handlerType);
+        IFilter<Update>[] filters = HandlerInspector.GetFilterAttributes(handlerType, handlerAttribute.Type).ToArray();
+
+        UpdateType = handlerAttribute.Type;
+        Indexer = handlerAttribute.GetIndexer();
+        FormReport = handlerAttribute.FormReport;
+        Filters = new DescriptorFiltersSet(handlerAttribute, stateKeeperAttribute, filters);
+        Aspects = HandlerInspector.GetAspects(handlerType);
+        DisplayString = HandlerInspector.GetDisplayName(handlerType);
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class as a keyed handler with the specified service key.
+    /// </summary>
+    /// <param name="handlerType">The type of the handler to describe</param>
+    /// <param name="serviceKey">The service key for dependency injection</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> is null</exception>
+    public HandlerDescriptor(Type handlerType, object serviceKey) : this(DescriptorType.Keyed, handlerType)
+    {
+        ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with all basic properties.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="filters">The set of filters associated with this handler</param>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = filters;
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with singleton instance support.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="filters">The set of filters associated with this handler</param>
+    /// <param name="serviceKey">The service key for dependency injection</param>
+    /// <param name="singletonInstance">The singleton instance of the handler</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="singletonInstance"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters, object serviceKey, UpdateHandlerBase singletonInstance)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = filters;
+        ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
+        SingletonInstance = singletonInstance ?? throw new ArgumentNullException(nameof(singletonInstance));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with instance factory support.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="filters">The set of filters associated with this handler</param>
+    /// <param name="instanceFactory">Factory for creating handler instances</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="instanceFactory"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters, Func<UpdateHandlerBase> instanceFactory)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = filters;
+        InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with service key and instance factory support.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="filters">The set of filters associated with this handler</param>
+    /// <param name="serviceKey">The service key for dependency injection</param>
+    /// <param name="instanceFactory">Factory for creating handler instances</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="instanceFactory"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters, object serviceKey, Func<UpdateHandlerBase> instanceFactory)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = filters;
+        ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
+        InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute and filters.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = pollingHandlerAttribute.Type;
+        Indexer = pollingHandlerAttribute.GetIndexer();
+        Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute, filters, and singleton instance.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    /// <param name="serviceKey">The service key for dependency injection</param>
+    /// <param name="singletonInstance">The singleton instance of the handler</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="singletonInstance"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, UpdateHandlerBase singletonInstance)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = pollingHandlerAttribute.Type;
+        Indexer = pollingHandlerAttribute.GetIndexer();
+        Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
+        ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
+        SingletonInstance = singletonInstance ?? throw new ArgumentNullException(nameof(singletonInstance));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute, filters, and instance factory.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    /// <param name="instanceFactory">Factory for creating handler instances</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="instanceFactory"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, Func<UpdateHandlerBase> instanceFactory)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = pollingHandlerAttribute.Type;
+        Indexer = pollingHandlerAttribute.GetIndexer();
+        Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
+        InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with polling handler attribute, filters, service key, and instance factory.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="pollingHandlerAttribute">The polling handler attribute containing configuration</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    /// <param name="serviceKey">The service key for dependency injection</param>
+    /// <param name="instanceFactory">Factory for creating handler instances</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="instanceFactory"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateHandlerAttributeBase pollingHandlerAttribute, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, Func<UpdateHandlerBase> instanceFactory)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = pollingHandlerAttribute.Type;
+        Indexer = pollingHandlerAttribute.GetIndexer();
+        Filters = new DescriptorFiltersSet(pollingHandlerAttribute, stateKeepFilter, filters);
+        ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
+        InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter support.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="validateFilter">Optional validation filter</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter and singleton instance support.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="validateFilter">Optional validation filter</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    /// <param name="serviceKey">The service key for dependency injection</param>
+    /// <param name="singletonInstance">The singleton instance of the handler</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="singletonInstance"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, UpdateHandlerBase singletonInstance)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
+        ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
+        SingletonInstance = singletonInstance ?? throw new ArgumentNullException(nameof(singletonInstance));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter and instance factory support.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="validateFilter">Optional validation filter</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    /// <param name="instanceFactory">Factory for creating handler instances</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="instanceFactory"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, Func<UpdateHandlerBase> instanceFactory)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
+        InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptor"/> class with validation filter, service key, and instance factory support.
+    /// </summary>
+    /// <param name="type">The type of the descriptor</param>
+    /// <param name="handlerType">The type of the handler</param>
+    /// <param name="updateType">The type of update this handler processes</param>
+    /// <param name="indexer">The indexer for handler concurrency and priority</param>
+    /// <param name="validateFilter">Optional validation filter</param>
+    /// <param name="filters">Optional array of filters to apply</param>
+    /// <param name="stateKeepFilter">Optional state keeping filter</param>
+    /// <param name="serviceKey">The service key for dependency injection</param>
+    /// <param name="instanceFactory">Factory for creating handler instances</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="serviceKey"/> or <paramref name="instanceFactory"/> is null</exception>
+    public HandlerDescriptor(DescriptorType type, Type handlerType, UpdateType updateType, DescriptorIndexer indexer, IFilter<Update>? validateFilter, IFilter<Update>[]? filters, IFilter<Update>? stateKeepFilter, object serviceKey, Func<UpdateHandlerBase> instanceFactory)
+    {
+        Type = type;
+        HandlerType = handlerType;
+        UpdateType = updateType;
+        Indexer = indexer;
+        Filters = new DescriptorFiltersSet(validateFilter, stateKeepFilter, filters);
+        ServiceKey = serviceKey ?? throw new ArgumentNullException(nameof(serviceKey));
+        InstanceFactory = instanceFactory ?? throw new ArgumentNullException(nameof(instanceFactory));
+    }
+
+    /// <summary>
+    /// Sets singleton instance of this descriptor
+    /// Throws exception if instance already set
+    /// </summary>
+    /// <param name="instance"></param>
+    /// <exception cref="Exception"></exception>
+    public void SetInstance(UpdateHandlerBase instance)
+    {
+        if (SingletonInstance != null)
+            throw new Exception();
+
+        SingletonInstance = instance;
+    }
+
+    /// <summary>
+    /// Tries to set singleton instance of this descriptor
+    /// </summary>
+    /// <param name="instance"></param>
+    /// <returns></returns>
+    public bool TrySetInstance(UpdateHandlerBase instance)
+    {
+        if (SingletonInstance != null)
+            return false;
+
+        SingletonInstance = instance;
+        return true;
+    }
+
+    /// <inheritdoc/>
+    public override string ToString()
+        => DisplayString ?? HandlerType.Name;
 }

src/Telegrator/Core/Descriptors/HandlerDescriptorList.cs

@@ -2,158 +2,157 @@
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// The collection containing the <see cref="HandlerDescriptor"/>'s. Used to route <see cref="Update"/>'s in <see cref="IHandlersProvider"/>
+/// </summary>
+public sealed class HandlerDescriptorList : IEnumerable<HandlerDescriptor>
 {
+    private readonly object _lock = new object();
+    private readonly SortedList<DescriptorIndexer, HandlerDescriptor> _innerCollection;
+    private readonly TelegratorOptions? _options;
+    private readonly UpdateType _handlingType;
+
+    private int count;
+
     /// <summary>
-    /// The collection containing the <see cref="HandlerDescriptor"/>'s. Used to route <see cref="Update"/>'s in <see cref="IHandlersProvider"/>
+    /// Gets a value indicating whether the collection is read-only.
     /// </summary>
-    public sealed class HandlerDescriptorList : IEnumerable<HandlerDescriptor>
+    public bool IsReadOnly { get; private set; } = false;
+
+    /// <summary>
+    /// Gets the <see cref="UpdateType"/> of handlers in this collection.
+    /// </summary>
+    public UpdateType HandlingType => _handlingType;
+
+    /// <summary>
+    /// Gets count of registered handlers in list
+    /// </summary>
+    public int Count => _innerCollection.Count;
+
+    /// <summary>
+    /// Gets or sets the <see cref="HandlerDescriptor"/> at the specified index.
+    /// </summary>
+    /// <param name="index"></param>
+    /// <returns></returns>
+    public HandlerDescriptor this[int index]
     {
-        private readonly object _lock = new object();
-        private readonly SortedList<DescriptorIndexer, HandlerDescriptor> _innerCollection;
-        private readonly TelegratorOptions? _options;
-        private readonly UpdateType _handlingType;
+        get => _innerCollection.Values[index];
+        set => _innerCollection.Values[index] = value;
+    }
 
-        private int count;
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptorList"/> class without a specific <see cref="UpdateType"/>.
+    /// </summary>
+    public HandlerDescriptorList()
+        : this(UpdateType.Unknown, default) { }
 
-        /// <summary>
-        /// Gets a value indicating whether the collection is read-only.
-        /// </summary>
-        public bool IsReadOnly { get; private set; } = false;
+    /// <summary>
+    /// Initializes a new instance of the <see cref="HandlerDescriptorList"/> class.
+    /// </summary>
+    /// <param name="updateType">The update type for the handlers.</param>
+    /// <param name="options">The collecting options.</param>
+    public HandlerDescriptorList(UpdateType updateType, TelegratorOptions? options)
+    {
+        _innerCollection = [];
+        _handlingType = updateType;
+        _options = options;
+    }
 
-        /// <summary>
-        /// Gets the <see cref="UpdateType"/> of handlers in this collection.
-        /// </summary>
-        public UpdateType HandlingType => _handlingType;
-
-        /// <summary>
-        /// Gets count of registered handlers in list
-        /// </summary>
-        public int Count => _innerCollection.Count;
-
-        /// <summary>
-        /// Gets or sets the <see cref="HandlerDescriptor"/> at the specified index.
-        /// </summary>
-        /// <param name="index"></param>
-        /// <returns></returns>
-        public HandlerDescriptor this[int index]
+    /// <summary>
+    /// Adds a new <see cref="HandlerDescriptor"/> to the collection.
+    /// </summary>
+    /// <param name="descriptor">The handler descriptor to add.</param>
+    /// <exception cref="CollectionFrozenException">Thrown if the collection is frozen.</exception>
+    /// <exception cref="InvalidOperationException">Thrown if the update type does not match.</exception>
+    public void Add(HandlerDescriptor descriptor)
+    {
+        lock (_lock)
         {
-            get => _innerCollection.Values[index];
-            set => _innerCollection.Values[index] = value;
-        }
+            if (IsReadOnly)
+                throw new CollectionFrozenException();
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptorList"/> class without a specific <see cref="UpdateType"/>.
-        /// </summary>
-        public HandlerDescriptorList()
-            : this(UpdateType.Unknown, default) { }
+            if (_handlingType != UpdateType.Unknown && descriptor.UpdateType != _handlingType)
+                throw new InvalidOperationException();
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="HandlerDescriptorList"/> class.
-        /// </summary>
-        /// <param name="updateType">The update type for the handlers.</param>
-        /// <param name="options">The collecting options.</param>
-        public HandlerDescriptorList(UpdateType updateType, TelegratorOptions? options)
-        {
-            _innerCollection = [];
-            _handlingType = updateType;
-            _options = options;
-        }
+            descriptor.Indexer = descriptor.Indexer.UpdateIndex(count++);
+            _innerCollection.Add(descriptor.Indexer, descriptor);
 
-        /// <summary>
-        /// Adds a new <see cref="HandlerDescriptor"/> to the collection.
-        /// </summary>
-        /// <param name="descriptor">The handler descriptor to add.</param>
-        /// <exception cref="CollectionFrozenException">Thrown if the collection is frozen.</exception>
-        /// <exception cref="InvalidOperationException">Thrown if the update type does not match.</exception>
-        public void Add(HandlerDescriptor descriptor)
-        {
-            lock (_lock)
-            {
-                if (IsReadOnly)
-                    throw new CollectionFrozenException();
-
-                if (_handlingType != UpdateType.Unknown && descriptor.UpdateType != _handlingType)
-                    throw new InvalidOperationException();
-
-                descriptor.Indexer = descriptor.Indexer.UpdateIndex(count++);
-                _innerCollection.Add(descriptor.Indexer, descriptor);
-
-                if (_handlingType == UpdateType.InlineQuery)
-                    IsReadOnly = true;
-            }
-        }
-
-        /// <summary>
-        /// Checks if the collection contains a <see cref="HandlerDescriptor"/> with the specified <see cref="DescriptorIndexer"/>.
-        /// </summary>
-        /// <param name="indexer">The descriptor indexer.</param>
-        /// <returns>True if the descriptor exists; otherwise, false.</returns>
-        public bool ContainsKey(DescriptorIndexer indexer)
-        {
-            return _innerCollection.ContainsKey(indexer);
-        }
-
-        /// <summary>
-        /// Removes the <see cref="HandlerDescriptor"/> with the specified <see cref="DescriptorIndexer"/> from the collection.
-        /// </summary>
-        /// <param name="indexer">The descriptor indexer.</param>
-        /// <returns>True if the descriptor was removed; otherwise, false.</returns>
-        public bool Remove(DescriptorIndexer indexer)
-        {
-            lock (_lock)
-            {
-                return _innerCollection.Remove(indexer);
-            }
-        }
-
-        /// <summary>
-        /// Removes the <see cref="HandlerDescriptor"/> from the collection.
-        /// </summary>
-        /// <param name="descriptor"></param>
-        /// <returns></returns>
-        public bool Remove(HandlerDescriptor descriptor)
-        {
-            lock (_lock)
-            {
-                int index = _innerCollection.IndexOfValue(descriptor);
-                if (index == -1)
-                    return false;
-
-                _innerCollection.RemoveAt(index);
-                return true;
-            }
-        }
-
-        /// <summary>
-        /// Removes all descriptos from the <see cref="HandlerDescriptorList"/>
-        /// </summary>
-        public void Clear()
-        {
-            lock (_lock)
-            {
-                _innerCollection.Clear();
-            }
-        }
-
-        /// <summary>
-        /// Freezes the <see cref="HandlerDescriptorList"/> and prohibits adding new elements to it.
-        /// </summary>
-        public void Freeze()
-        {
-            IsReadOnly = true;
-        }
-
-        /// <inheritdoc/>
-        public IEnumerator<HandlerDescriptor> GetEnumerator()
-        {
-            return _innerCollection.Values.GetEnumerator();
-        }
-
-        /// <inheritdoc/>
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            return _innerCollection.Values.GetEnumerator();
+            if (_handlingType == UpdateType.InlineQuery)
+                IsReadOnly = true;
         }
     }
+
+    /// <summary>
+    /// Checks if the collection contains a <see cref="HandlerDescriptor"/> with the specified <see cref="DescriptorIndexer"/>.
+    /// </summary>
+    /// <param name="indexer">The descriptor indexer.</param>
+    /// <returns>True if the descriptor exists; otherwise, false.</returns>
+    public bool ContainsKey(DescriptorIndexer indexer)
+    {
+        return _innerCollection.ContainsKey(indexer);
+    }
+
+    /// <summary>
+    /// Removes the <see cref="HandlerDescriptor"/> with the specified <see cref="DescriptorIndexer"/> from the collection.
+    /// </summary>
+    /// <param name="indexer">The descriptor indexer.</param>
+    /// <returns>True if the descriptor was removed; otherwise, false.</returns>
+    public bool Remove(DescriptorIndexer indexer)
+    {
+        lock (_lock)
+        {
+            return _innerCollection.Remove(indexer);
+        }
+    }
+
+    /// <summary>
+    /// Removes the <see cref="HandlerDescriptor"/> from the collection.
+    /// </summary>
+    /// <param name="descriptor"></param>
+    /// <returns></returns>
+    public bool Remove(HandlerDescriptor descriptor)
+    {
+        lock (_lock)
+        {
+            int index = _innerCollection.IndexOfValue(descriptor);
+            if (index == -1)
+                return false;
+
+            _innerCollection.RemoveAt(index);
+            return true;
+        }
+    }
+
+    /// <summary>
+    /// Removes all descriptos from the <see cref="HandlerDescriptorList"/>
+    /// </summary>
+    public void Clear()
+    {
+        lock (_lock)
+        {
+            _innerCollection.Clear();
+        }
+    }
+
+    /// <summary>
+    /// Freezes the <see cref="HandlerDescriptorList"/> and prohibits adding new elements to it.
+    /// </summary>
+    public void Freeze()
+    {
+        IsReadOnly = true;
+    }
+
+    /// <inheritdoc/>
+    public IEnumerator<HandlerDescriptor> GetEnumerator()
+    {
+        return _innerCollection.Values.GetEnumerator();
+    }
+
+    /// <inheritdoc/>
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+        return _innerCollection.Values.GetEnumerator();
+    }
 }

src/Telegrator/Core/Descriptors/HandlerInspector.cs

@@ -2,97 +2,97 @@
 using System.Reflection;
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
+using Telegrator.Annotations;
 using Telegrator.Aspects;
 using Telegrator.Core.Attributes;
 using Telegrator.Core.Filters;
 
-namespace Telegrator.Core.Descriptors
+namespace Telegrator.Core.Descriptors;
+
+/// <summary>
+/// Provides methods for inspecting handler types and retrieving their attributes and filters.
+/// </summary>
+public static class HandlerInspector
 {
     /// <summary>
-    /// Provides methods for inspecting handler types and retrieving their attributes and filters.
+    /// Gets handler's display name
     /// </summary>
-    public static class HandlerInspector
+    /// <param name="handlerType"></param>
+    /// <returns></returns>
+    public static string? GetDisplayName(MemberInfo handlerType)
     {
-        /// <summary>
-        /// Gets handler's display name
-        /// </summary>
-        /// <param name="handlerType"></param>
-        /// <returns></returns>
-        public static string? GetDisplayName(MemberInfo handlerType)
+        return handlerType.GetCustomAttribute<DisplayNameAttribute>()?.DisplayName;
+    }
+
+    /// <summary>
+    /// Gets the handler attribute from the specified member info.
+    /// </summary>
+    /// <param name="handlerType">The member info representing the handler type.</param>
+    /// <returns>The handler attribute.</returns>
+    public static UpdateHandlerAttributeBase GetHandlerAttribute(MemberInfo handlerType)
+    {
+        // Getting polling handler attribute
+        IEnumerable<UpdateHandlerAttributeBase> handlerAttrs = handlerType.GetCustomAttributes<UpdateHandlerAttributeBase>();
+
+        //
+        return handlerAttrs.Single();
+    }
+
+    /// <summary>
+    /// Gets the state keeper attribute from the specified member info, if present.
+    /// </summary>
+    /// <param name="handlerType">The member info representing the handler type.</param>
+    /// <returns>The state keeper attribute, or null if not present.</returns>
+    public static IFilter<Update>? GetStateKeeperAttribute(MemberInfo handlerType)
+    {
+        // Getting polling handler attribute
+        Attribute stateAttr = handlerType.GetCustomAttribute(typeof(StateAttribute<,>));
+
+        //
+        return stateAttr as IFilter<Update>;
+    }
+
+    /// <summary>
+    /// Gets all filter attributes for the specified handler type and update type.
+    /// </summary>
+    /// <param name="handlerType">The member info representing the handler type.</param>
+    /// <param name="validUpdType">The valid update type.</param>
+    /// <returns>An enumerable of filter attributes.</returns>
+    public static IEnumerable<IFilter<Update>> GetFilterAttributes(MemberInfo handlerType, UpdateType validUpdType)
+    {
+        //
+        IEnumerable<UpdateFilterAttributeBase> filters = handlerType.GetCustomAttributes<UpdateFilterAttributeBase>();
+
+        //
+        if (filters.Any(filterAttr => !filterAttr.AllowedTypes.Contains(validUpdType)))
+            throw new InvalidOperationException();
+
+        UpdateFilterAttributeBase? lastFilterAttribute = null;
+        foreach (UpdateFilterAttributeBase filterAttribute in filters)
         {
-            return handlerType.GetCustomAttribute<DisplayNameAttribute>()?.DisplayName;
-        }
-
-        /// <summary>
-        /// Gets the handler attribute from the specified member info.
-        /// </summary>
-        /// <param name="handlerType">The member info representing the handler type.</param>
-        /// <returns>The handler attribute.</returns>
-        public static UpdateHandlerAttributeBase GetHandlerAttribute(MemberInfo handlerType)
-        {
-            // Getting polling handler attribute
-            IEnumerable<UpdateHandlerAttributeBase> handlerAttrs = handlerType.GetCustomAttributes<UpdateHandlerAttributeBase>();
-
-            //
-            return handlerAttrs.Single();
-        }
-
-        /// <summary>
-        /// Gets the state keeper attribute from the specified member info, if present.
-        /// </summary>
-        /// <param name="handlerType">The member info representing the handler type.</param>
-        /// <returns>The state keeper attribute, or null if not present.</returns>
-        public static StateKeeperAttributeBase? GetStateKeeperAttribute(MemberInfo handlerType)
-        {
-            // Getting polling handler attribute
-            IEnumerable<StateKeeperAttributeBase> handlerAttrs = handlerType.GetCustomAttributes<StateKeeperAttributeBase>();
-
-            //
-            return handlerAttrs.Any() ? handlerAttrs.Single() : null;
-        }
-
-        /// <summary>
-        /// Gets all filter attributes for the specified handler type and update type.
-        /// </summary>
-        /// <param name="handlerType">The member info representing the handler type.</param>
-        /// <param name="validUpdType">The valid update type.</param>
-        /// <returns>An enumerable of filter attributes.</returns>
-        public static IEnumerable<IFilter<Update>> GetFilterAttributes(MemberInfo handlerType, UpdateType validUpdType)
-        {
-            //
-            IEnumerable<UpdateFilterAttributeBase> filters = handlerType.GetCustomAttributes<UpdateFilterAttributeBase>();
-
-            //
-            if (filters.Any(filterAttr => !filterAttr.AllowedTypes.Contains(validUpdType)))
-                throw new InvalidOperationException();
-
-            UpdateFilterAttributeBase? lastFilterAttribute = null;
-            foreach (UpdateFilterAttributeBase filterAttribute in filters)
+            if (!filterAttribute.ProcessModifiers(lastFilterAttribute))
             {
-                if (!filterAttribute.ProcessModifiers(lastFilterAttribute))
-                {
-                    lastFilterAttribute = null;
-                    yield return filterAttribute.AnonymousFilter;
-                }
-                else
-                {
-                    lastFilterAttribute = filterAttribute;
-                    continue;
-                }
+                lastFilterAttribute = null;
+                yield return filterAttribute.AnonymousFilter;
+            }
+            else
+            {
+                lastFilterAttribute = filterAttribute;
+                continue;
             }
         }
+    }
 
-        /// <summary>
-        /// Gets the aspects configuration for the specified handler type.
-        /// Inspects the handler for both self-processing (implements interfaces) and typed processing (uses attributes).
-        /// </summary>
-        /// <param name="handlerType">The type of the handler to inspect.</param>
-        /// <returns>A <see cref="DescriptorAspectsSet"/> containing the aspects configuration.</returns>
-        public static DescriptorAspectsSet GetAspects(Type handlerType)
-        {
-            Type? typedPre = handlerType.GetCustomAttribute(typeof(BeforeExecutionAttribute<>))?.GetType().GetGenericArguments()[0];
-            Type? typedPost = handlerType.GetCustomAttribute(typeof(AfterExecutionAttribute<>))?.GetType().GetGenericArguments()[0];
-            return new DescriptorAspectsSet(typedPre, typedPost);
-        }
+    /// <summary>
+    /// Gets the aspects configuration for the specified handler type.
+    /// Inspects the handler for both self-processing (implements interfaces) and typed processing (uses attributes).
+    /// </summary>
+    /// <param name="handlerType">The type of the handler to inspect.</param>
+    /// <returns>A <see cref="DescriptorAspectsSet"/> containing the aspects configuration.</returns>
+    public static DescriptorAspectsSet GetAspects(Type handlerType)
+    {
+        Type? typedPre = handlerType.GetCustomAttribute(typeof(BeforeExecutionAttribute<>))?.GetType().GetGenericArguments()[0];
+        Type? typedPost = handlerType.GetCustomAttribute(typeof(AfterExecutionAttribute<>))?.GetType().GetGenericArguments()[0];
+        return new DescriptorAspectsSet(typedPre, typedPost);
     }
 }

src/Telegrator/Core/Filters/AnonymousCompiledFilter.cs

@@ -2,108 +2,107 @@
 using Telegrator.Filters;
 using Telegrator.Logging;
 
-namespace Telegrator.Core.Filters
+namespace Telegrator.Core.Filters;
+
+/// <summary>
+/// Represents a compiled filter that applies a set of filters to an anonymous target type.
+/// </summary>
+public class AnonymousCompiledFilter : Filter<Update>, INamedFilter
 {
+    private readonly Func<FilterExecutionContext<Update>, object, bool> FilterAction;
+    private readonly Func<Update, object?> GetFilterringTarget;
+    private readonly string _name;
+
     /// <summary>
-    /// Represents a compiled filter that applies a set of filters to an anonymous target type.
+    /// Gets the name of this compiled filter.
     /// </summary>
-    public class AnonymousCompiledFilter : Filter<Update>, INamedFilter
+    public virtual string Name => _name;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="AnonymousCompiledFilter"/> class.
+    /// </summary>
+    /// <param name="name">The name of the compiled filter.</param>
+    /// <param name="filterAction">The filter action delegate.</param>
+    /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
+    private AnonymousCompiledFilter(string name, Func<Update, object?> getFilterringTarget, Func<FilterExecutionContext<Update>, object, bool> filterAction)
     {
-        private readonly Func<FilterExecutionContext<Update>, object, bool> FilterAction;
-        private readonly Func<Update, object?> GetFilterringTarget;
-        private readonly string _name;
+        FilterAction = filterAction;
+        GetFilterringTarget = getFilterringTarget;
+        _name = name;
+    }
 
-        /// <summary>
-        /// Gets the name of this compiled filter.
-        /// </summary>
-        public virtual string Name => _name;
+    /// <summary>
+    /// Compiles a set of filters into an <see cref="AnonymousCompiledFilter"/> for a specific target type.
+    /// </summary>
+    /// <typeparam name="T">The type of the filtering target.</typeparam>
+    /// <param name="filters">The list of filters to compile.</param>
+    /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
+    /// <returns>The compiled filter.</returns>
+    public static AnonymousCompiledFilter Compile<T>(IEnumerable<IFilter<T>> filters, Func<Update, object?> getFilterringTarget) where T : class
+    {
+        return new AnonymousCompiledFilter(
+            string.Join("+", filters.Select(fltr => fltr.GetType().Name)),
+            getFilterringTarget,
+            (context, filterringTarget) => CanPassInternal(context, filters, filterringTarget));
+    }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="AnonymousCompiledFilter"/> class.
-        /// </summary>
-        /// <param name="name">The name of the compiled filter.</param>
-        /// <param name="filterAction">The filter action delegate.</param>
-        /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
-        private AnonymousCompiledFilter(string name, Func<Update, object?> getFilterringTarget, Func<FilterExecutionContext<Update>, object, bool> filterAction)
+    /// <summary>
+    /// Compiles a set of filters into an <see cref="AnonymousCompiledFilter"/> for a specific target type with a custom name.
+    /// </summary>
+    /// <typeparam name="T">The type of the filtering target.</typeparam>
+    /// <param name="name">The custom name for the compiled filter.</param>
+    /// <param name="filters">The list of filters to compile.</param>
+    /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
+    /// <returns>The compiled filter.</returns>
+    public static AnonymousCompiledFilter Compile<T>(string name, IEnumerable<IFilter<T>> filters, Func<Update, object?> getFilterringTarget) where T : class
+    {
+        return new AnonymousCompiledFilter(
+            name,
+            getFilterringTarget,
+            (context, filterringTarget) => CanPassInternal(context, filters, filterringTarget));
+    }
+
+    /// <summary>
+    /// Determines whether all filters can pass for the given context and filtering target.
+    /// </summary>
+    /// <typeparam name="T">The type of the filtering target.</typeparam>
+    /// <param name="filters">The list of filters.</param>
+    /// <param name="updateContext">The filter execution context.</param>
+    /// <param name="filterringTarget">The filtering target.</param>
+    /// <returns>True if all filters pass; otherwise, false.</returns>
+    private static bool CanPassInternal<T>(FilterExecutionContext<Update> updateContext, IEnumerable<IFilter<T>> filters, object filterringTarget) where T : class
+    {
+        FilterExecutionContext<T> context = updateContext.CreateChild((T)filterringTarget);
+        foreach (IFilter<T> filter in filters)
         {
-            FilterAction = filterAction;
-            GetFilterringTarget = getFilterringTarget;
-            _name = name;
-        }
-
-        /// <summary>
-        /// Compiles a set of filters into an <see cref="AnonymousCompiledFilter"/> for a specific target type.
-        /// </summary>
-        /// <typeparam name="T">The type of the filtering target.</typeparam>
-        /// <param name="filters">The list of filters to compile.</param>
-        /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
-        /// <returns>The compiled filter.</returns>
-        public static AnonymousCompiledFilter Compile<T>(IEnumerable<IFilter<T>> filters, Func<Update, object?> getFilterringTarget) where T : class
-        {
-            return new AnonymousCompiledFilter(
-                string.Join("+", filters.Select(fltr => fltr.GetType().Name)),
-                getFilterringTarget,
-                (context, filterringTarget) => CanPassInternal(context, filters, filterringTarget));
-        }
-
-        /// <summary>
-        /// Compiles a set of filters into an <see cref="AnonymousCompiledFilter"/> for a specific target type with a custom name.
-        /// </summary>
-        /// <typeparam name="T">The type of the filtering target.</typeparam>
-        /// <param name="name">The custom name for the compiled filter.</param>
-        /// <param name="filters">The list of filters to compile.</param>
-        /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
-        /// <returns>The compiled filter.</returns>
-        public static AnonymousCompiledFilter Compile<T>(string name, IEnumerable<IFilter<T>> filters, Func<Update, object?> getFilterringTarget) where T : class
-        {
-            return new AnonymousCompiledFilter(
-                name,
-                getFilterringTarget,
-                (context, filterringTarget) => CanPassInternal(context, filters, filterringTarget));
-        }
-
-        /// <summary>
-        /// Determines whether all filters can pass for the given context and filtering target.
-        /// </summary>
-        /// <typeparam name="T">The type of the filtering target.</typeparam>
-        /// <param name="filters">The list of filters.</param>
-        /// <param name="updateContext">The filter execution context.</param>
-        /// <param name="filterringTarget">The filtering target.</param>
-        /// <returns>True if all filters pass; otherwise, false.</returns>
-        private static bool CanPassInternal<T>(FilterExecutionContext<Update> updateContext, IEnumerable<IFilter<T>> filters, object filterringTarget) where T : class
-        {
-            FilterExecutionContext<T> context = updateContext.CreateChild((T)filterringTarget);
-            foreach (IFilter<T> filter in filters)
-            {
-                if (!filter.CanPass(context))
-                {
-                    if (filter is not AnonymousCompiledFilter && filter is not AnonymousTypeFilter)
-                        TelegratorLogging.LogDebug("{0} filter of {1} didnt pass! (Compiled anonymous)", filter.GetType().Name, context.Data["handler_name"]);
-                
-                    return false;
-                }
-
-                context.CompletedFilters.Add(filter);
-            }
-
-            return true;
-        }
-
-        /// <inheritdoc/>
-        public override bool CanPass(FilterExecutionContext<Update> context)
-        {
-            try
-            {
-                object? filterringTarget = GetFilterringTarget.Invoke(context.Input);
-                if (filterringTarget == null)
-                    return false;
-
-                return FilterAction.Invoke(context, filterringTarget);
-            }
-            catch
+            if (!filter.CanPass(context))
             {
+                if (filter is not AnonymousCompiledFilter && filter is not AnonymousTypeFilter)
+                    TelegratorLogging.LogDebug("{0} filter of {1} didnt pass! (Compiled anonymous)", filter.GetType().Name, context.Data["handler_name"]);
+            
                 return false;
             }
+
+            context.CompletedFilters.Add(filter);
+        }
+
+        return true;
+    }
+
+    /// <inheritdoc/>
+    public override bool CanPass(FilterExecutionContext<Update> context)
+    {
+        try
+        {
+            object? filterringTarget = GetFilterringTarget.Invoke(context.Input);
+            if (filterringTarget == null)
+                return false;
+
+            return FilterAction.Invoke(context, filterringTarget);
+        }
+        catch
+        {
+            return false;
         }
     }
 }

src/Telegrator/Core/Filters/AnonymousTypeFilter.cs

@@ -2,109 +2,108 @@
 using Telegrator.Filters;
 using Telegrator.Logging;
 
-namespace Telegrator.Core.Filters
+namespace Telegrator.Core.Filters;
+
+/// <summary>
+/// Represents a filter that applies a filter action to an anonymous target type extracted from an update.
+/// </summary>
+public class AnonymousTypeFilter : Filter<Update>, INamedFilter
 {
+    private static readonly Type[] IgnoreLog = [typeof(CompiledFilter<>), typeof(AnonymousCompiledFilter), typeof(AnonymousTypeFilter)];
+
+    private readonly Func<FilterExecutionContext<Update>, object, bool> FilterAction;
+    private readonly Func<Update, object?> GetFilterringTarget;
+    private readonly string _name;
+
     /// <summary>
-    /// Represents a filter that applies a filter action to an anonymous target type extracted from an update.
+    /// Gets the name of this filter.
     /// </summary>
-    public class AnonymousTypeFilter : Filter<Update>, INamedFilter
+    public virtual string Name => _name;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="AnonymousTypeFilter"/> class.
+    /// </summary>
+    /// <param name="name">The name of the filter.</param>
+    /// <param name="filterAction">The filter action delegate.</param>
+    /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
+    public AnonymousTypeFilter(string name, Func<Update, object?> getFilterringTarget, Func<FilterExecutionContext<Update>, object, bool> filterAction)
     {
-        private static readonly Type[] IgnoreLog = [typeof(CompiledFilter<>), typeof(AnonymousCompiledFilter), typeof(AnonymousTypeFilter)];
+        FilterAction = filterAction;
+        GetFilterringTarget = getFilterringTarget;
+        _name = name;
+    }
 
-        private readonly Func<FilterExecutionContext<Update>, object, bool> FilterAction;
-        private readonly Func<Update, object?> GetFilterringTarget;
-        private readonly string _name;
+    /// <summary>
+    /// Compiles a filter for a specific target type.
+    /// </summary>
+    /// <typeparam name="T">The type of the filtering target.</typeparam>
+    /// <param name="filter">The filter to apply.</param>
+    /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
+    /// <returns>The compiled filter.</returns>
+    public static AnonymousTypeFilter Compile<T>(IFilter<T> filter, Func<Update, T?> getFilterringTarget) where T : class
+    {
+        return new AnonymousTypeFilter(
+            filter.GetType().Name, getFilterringTarget,
+            (context, filterringTarget) => CanPassInternal(context, filter, filterringTarget));
+    }
 
-        /// <summary>
-        /// Gets the name of this filter.
-        /// </summary>
-        public virtual string Name => _name;
+    /// <summary>
+    /// Compiles a filter for a specific target type with a custom name.
+    /// </summary>
+    /// <typeparam name="T">The type of the filtering target.</typeparam>
+    /// <param name="name">The custom name for the compiled filter.</param>
+    /// <param name="filter">The filter to apply.</param>
+    /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
+    /// <returns>The compiled filter.</returns>
+    public static AnonymousTypeFilter Compile<T>(string name, IFilter<T> filter, Func<Update, T?> getFilterringTarget) where T : class
+    {
+        return new AnonymousTypeFilter(
+            name,
+            getFilterringTarget,
+            (context, filterringTarget) => CanPassInternal(context, filter, filterringTarget));
+    }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="AnonymousTypeFilter"/> class.
-        /// </summary>
-        /// <param name="name">The name of the filter.</param>
-        /// <param name="filterAction">The filter action delegate.</param>
-        /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
-        public AnonymousTypeFilter(string name, Func<Update, object?> getFilterringTarget, Func<FilterExecutionContext<Update>, object, bool> filterAction)
+    /// <summary>
+    /// Determines whether the filter can pass for the given context and filtering target.
+    /// </summary>
+    /// <typeparam name="T">The type of the filtering target.</typeparam>
+    /// <param name="updateContext">The filter execution context.</param>
+    /// <param name="filter">The filter to apply.</param>
+    /// <param name="filterringTarget">The filtering target.</param>
+    /// <returns>True if the filter passes; otherwise, false.</returns>
+    private static bool CanPassInternal<T>(FilterExecutionContext<Update> updateContext, IFilter<T> filter, object filterringTarget) where T : class
+    {
+        FilterExecutionContext<T> context = updateContext.CreateChild((T)filterringTarget);
+        if (!filter.CanPass(context))
         {
-            FilterAction = filterAction;
-            GetFilterringTarget = getFilterringTarget;
-            _name = name;
+            if (IgnoreLog.Contains(filter.GetType().MakeGenericType()))
+                TelegratorLogging.LogDebug("{0} filter of {1} didnt pass!", filter.GetType().Name, context.Data["handler_name"]);
+
+            return false;
         }
 
-        /// <summary>
-        /// Compiles a filter for a specific target type.
-        /// </summary>
-        /// <typeparam name="T">The type of the filtering target.</typeparam>
-        /// <param name="filter">The filter to apply.</param>
-        /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
-        /// <returns>The compiled filter.</returns>
-        public static AnonymousTypeFilter Compile<T>(IFilter<T> filter, Func<Update, T?> getFilterringTarget) where T : class
-        {
-            return new AnonymousTypeFilter(
-                filter.GetType().Name, getFilterringTarget,
-                (context, filterringTarget) => CanPassInternal(context, filter, filterringTarget));
-        }
+        context.CompletedFilters.Add(filter);
+        return true;
+    }
 
-        /// <summary>
-        /// Compiles a filter for a specific target type with a custom name.
-        /// </summary>
-        /// <typeparam name="T">The type of the filtering target.</typeparam>
-        /// <param name="name">The custom name for the compiled filter.</param>
-        /// <param name="filter">The filter to apply.</param>
-        /// <param name="getFilterringTarget">The function to get the filtering target from an update.</param>
-        /// <returns>The compiled filter.</returns>
-        public static AnonymousTypeFilter Compile<T>(string name, IFilter<T> filter, Func<Update, T?> getFilterringTarget) where T : class
+    /// <summary>
+    /// Determines whether the filter can pass for the given context by extracting the filtering target and applying the filter action.
+    /// </summary>
+    /// <param name="context">The filter execution context.</param>
+    /// <returns>True if the filter passes; otherwise, false.</returns>
+    public override bool CanPass(FilterExecutionContext<Update> context)
+    {
+        try
         {
-            return new AnonymousTypeFilter(
-                name,
-                getFilterringTarget,
-                (context, filterringTarget) => CanPassInternal(context, filter, filterringTarget));
-        }
-
-        /// <summary>
-        /// Determines whether the filter can pass for the given context and filtering target.
-        /// </summary>
-        /// <typeparam name="T">The type of the filtering target.</typeparam>
-        /// <param name="updateContext">The filter execution context.</param>
-        /// <param name="filter">The filter to apply.</param>
-        /// <param name="filterringTarget">The filtering target.</param>
-        /// <returns>True if the filter passes; otherwise, false.</returns>
-        private static bool CanPassInternal<T>(FilterExecutionContext<Update> updateContext, IFilter<T> filter, object filterringTarget) where T : class
-        {
-            FilterExecutionContext<T> context = updateContext.CreateChild((T)filterringTarget);
-            if (!filter.CanPass(context))
-            {
-                if (IgnoreLog.Contains(filter.GetType().MakeGenericType()))
-                    TelegratorLogging.LogDebug("{0} filter of {1} didnt pass!", filter.GetType().Name, context.Data["handler_name"]);
-
+            object? filterringTarget = GetFilterringTarget.Invoke(context.Input);
+            if (filterringTarget == null)
                 return false;
-            }
 
-            context.CompletedFilters.Add(filter);
-            return true;
+            return FilterAction.Invoke(context, filterringTarget);
         }
-
-        /// <summary>
-        /// Determines whether the filter can pass for the given context by extracting the filtering target and applying the filter action.
-        /// </summary>
-        /// <param name="context">The filter execution context.</param>
-        /// <returns>True if the filter passes; otherwise, false.</returns>
-        public override bool CanPass(FilterExecutionContext<Update> context)
+        catch
         {
-            try
-            {
-                object? filterringTarget = GetFilterringTarget.Invoke(context.Input);
-                if (filterringTarget == null)
-                    return false;
-
-                return FilterAction.Invoke(context, filterringTarget);
-            }
-            catch
-            {
-                return false;
-            }
+            return false;
         }
     }
 }

src/Telegrator/Core/Filters/CompiledFilter.cs

@@ -1,64 +1,63 @@
 using Telegrator.Filters;
 using Telegrator.Logging;
 
-namespace Telegrator.Core.Filters
+namespace Telegrator.Core.Filters;
+
+/// <summary>
+/// Represents a filter that composes multiple filters and passes only if all of them pass.
+/// </summary>
+/// <typeparam name="T">The type of the input for the filter.</typeparam>
+public class CompiledFilter<T> : Filter<T>, INamedFilter where T : class
 {
+    private readonly IFilter<T>[] Filters;
+    private readonly string _name;
+
     /// <summary>
-    /// Represents a filter that composes multiple filters and passes only if all of them pass.
+    /// Gets the name of this compiled filter.
     /// </summary>
-    /// <typeparam name="T">The type of the input for the filter.</typeparam>
-    public class CompiledFilter<T> : Filter<T>, INamedFilter where T : class
+    public virtual string Name => _name;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="CompiledFilter{T}"/> class.
+    /// </summary>
+    /// <param name="filters">The filters to compose.</param>
+    public CompiledFilter(params IFilter<T>[] filters)
     {
-        private readonly IFilter<T>[] Filters;
-        private readonly string _name;
+        _name = string.Join("+", filters.Select(fltr => fltr.GetType().Name));
+        Filters = filters;
+    }
 
-        /// <summary>
-        /// Gets the name of this compiled filter.
-        /// </summary>
-        public virtual string Name => _name;
+    /// <summary>
+    /// Initializes a new instance of the <see cref="CompiledFilter{T}"/> class with a custom name.
+    /// </summary>
+    /// <param name="name">The custom name for the compiled filter.</param>
+    /// <param name="filters">The filters to compose.</param>
+    public CompiledFilter(string name, params IFilter<T>[] filters)
+    {
+        _name = name;
+        Filters = filters;
+    }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="CompiledFilter{T}"/> class.
-        /// </summary>
-        /// <param name="filters">The filters to compose.</param>
-        public CompiledFilter(params IFilter<T>[] filters)
+    /// <summary>
+    /// Determines whether all composed filters pass for the given context.
+    /// </summary>
+    /// <param name="context">The filter execution context.</param>
+    /// <returns>True if all filters pass; otherwise, false.</returns>
+    public override bool CanPass(FilterExecutionContext<T> context)
+    {
+        foreach (IFilter<T> filter in Filters)
         {
-            _name = string.Join("+", filters.Select(fltr => fltr.GetType().Name));
-            Filters = filters;
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="CompiledFilter{T}"/> class with a custom name.
-        /// </summary>
-        /// <param name="name">The custom name for the compiled filter.</param>
-        /// <param name="filters">The filters to compose.</param>
-        public CompiledFilter(string name, params IFilter<T>[] filters)
-        {
-            _name = name;
-            Filters = filters;
-        }
-
-        /// <summary>
-        /// Determines whether all composed filters pass for the given context.
-        /// </summary>
-        /// <param name="context">The filter execution context.</param>
-        /// <returns>True if all filters pass; otherwise, false.</returns>
-        public override bool CanPass(FilterExecutionContext<T> context)
-        {
-            foreach (IFilter<T> filter in Filters)
+            if (!filter.CanPass(context))
             {
-                if (!filter.CanPass(context))
-                {
-                    if (filter is not AnonymousCompiledFilter && filter is not AnonymousTypeFilter)
-                        TelegratorLogging.LogTrace("{0} filter of {1} didnt pass! (Compiled)", filter.GetType().Name, context.Data["handler_name"]);
+                if (filter is not AnonymousCompiledFilter && filter is not AnonymousTypeFilter)
+                    TelegratorLogging.LogTrace("{0} filter of {1} didnt pass! (Compiled)", filter.GetType().Name, context.Data["handler_name"]);
 
-                    return false;
-                }
-
-                context.CompletedFilters.Add(filter);
+                return false;
             }
-    
-            return true;
+
+            context.CompletedFilters.Add(filter);
         }
+
+        return true;
     }
 }

src/Telegrator/Core/Filters/CompletedFiltersList.cs

@@ -1,86 +1,85 @@
 using System.Collections;
 
-namespace Telegrator.Core.Filters
+namespace Telegrator.Core.Filters;
+
+/// <summary>
+/// The list containing filters worked out during Polling to further obtain additional filtering information
+/// </summary>
+public class CompletedFiltersList : IEnumerable<IFilterCollectable>
 {
+    private readonly List<IFilterCollectable> CompletedFilters = [];
+
     /// <summary>
-    /// The list containing filters worked out during Polling to further obtain additional filtering information
+    /// Adds the completed filter to the list.
     /// </summary>
-    public class CompletedFiltersList : IEnumerable<IFilterCollectable>
+    /// <typeparam name="TUpdate">The type of update.</typeparam>
+    /// <param name="filter">The filter to add.</param>
+    public void Add<TUpdate>(IFilter<TUpdate> filter) where TUpdate : class
     {
-        private readonly List<IFilterCollectable> CompletedFilters = [];
+        if (filter is AnonymousTypeFilter | filter is AnonymousCompiledFilter)
+            return;
 
-        /// <summary>
-        /// Adds the completed filter to the list.
-        /// </summary>
-        /// <typeparam name="TUpdate">The type of update.</typeparam>
-        /// <param name="filter">The filter to add.</param>
-        public void Add<TUpdate>(IFilter<TUpdate> filter) where TUpdate : class
-        {
-            if (filter is AnonymousTypeFilter | filter is AnonymousCompiledFilter)
-                return;
+        if (!filter.IsCollectible)
+            return;
 
-            if (!filter.IsCollectible)
-                return;
-
-            CompletedFilters.Add(filter);
-        }
-
-        /// <summary>
-        /// Adds many completed filters to the list.
-        /// </summary>
-        /// <typeparam name="TUpdate">The type of update.</typeparam>
-        /// <param name="filters">The filters to add.</param>
-        public void AddRange<TUpdate>(IEnumerable<IFilter<TUpdate>> filters) where TUpdate : class
-        {
-            foreach (IFilter<TUpdate> filter in filters)
-                Add(filter);
-        }
-
-        /// <summary>
-        /// Looks for filters of a given type in the list.
-        /// </summary>
-        /// <typeparam name="TFilter">The filter type to search for.</typeparam>
-        /// <returns>The enumerable containing filters of the given type.</returns>
-        /// <exception cref="NotFilterTypeException">Thrown if the type is not a filter type.</exception>
-        public IEnumerable<TFilter> Get<TFilter>() where TFilter : notnull, IFilterCollectable
-        {
-            if (!typeof(TFilter).IsFilterType())
-                throw new NotFilterTypeException(typeof(TFilter));
-
-            return CompletedFilters.OfType<TFilter>();
-        }
-
-        /// <summary>
-        /// Looks for a filter of a given type at the specified index in the list.
-        /// </summary>
-        /// <typeparam name="TFilter">The filter type to search for.</typeparam>
-        /// <param name="index">The index of the filter.</param>
-        /// <returns>The filter of the given type at the specified index.</returns>
-        /// <exception cref="NotFilterTypeException">Thrown if the type is not a filter type.</exception>
-        /// <exception cref="KeyNotFoundException">Thrown if no filter is found at the index.</exception>
-        public TFilter Get<TFilter>(int index) where TFilter : notnull, IFilterCollectable
-        {
-            IEnumerable<TFilter> filters = Get<TFilter>();
-            return filters.Any() ? filters.ElementAt(index) : throw new KeyNotFoundException();
-        }
-
-        /// <summary>
-        /// Returns a filter of a given type at the specified index, or null if it does not exist.
-        /// </summary>
-        /// <typeparam name="TFilter">The filter type to search for.</typeparam>
-        /// <param name="index">The index of the filter.</param>
-        /// <returns>The filter at the specified index, or null if it does not exist.</returns>
-        /// <exception cref="NotFilterTypeException">Thrown if the type is not a filter type.</exception>
-        public TFilter? GetOrDefault<TFilter>(int index) where TFilter : IFilterCollectable
-        {
-            IEnumerable<TFilter> filters = Get<TFilter>();
-            return filters.Any() ? filters.ElementAt(index) : default;
-        }
-
-        /// <inheritdoc/>
-        public IEnumerator<IFilterCollectable> GetEnumerator() => CompletedFilters.GetEnumerator();
-
-        /// <inheritdoc/>
-        IEnumerator IEnumerable.GetEnumerator() => CompletedFilters.GetEnumerator();
+        CompletedFilters.Add(filter);
     }
+
+    /// <summary>
+    /// Adds many completed filters to the list.
+    /// </summary>
+    /// <typeparam name="TUpdate">The type of update.</typeparam>
+    /// <param name="filters">The filters to add.</param>
+    public void AddRange<TUpdate>(IEnumerable<IFilter<TUpdate>> filters) where TUpdate : class
+    {
+        foreach (IFilter<TUpdate> filter in filters)
+            Add(filter);
+    }
+
+    /// <summary>
+    /// Looks for filters of a given type in the list.
+    /// </summary>
+    /// <typeparam name="TFilter">The filter type to search for.</typeparam>
+    /// <returns>The enumerable containing filters of the given type.</returns>
+    /// <exception cref="NotFilterTypeException">Thrown if the type is not a filter type.</exception>
+    public IEnumerable<TFilter> Get<TFilter>() where TFilter : notnull, IFilterCollectable
+    {
+        if (!typeof(TFilter).IsFilterType())
+            throw new NotFilterTypeException(typeof(TFilter));
+
+        return CompletedFilters.OfType<TFilter>();
+    }
+
+    /// <summary>
+    /// Looks for a filter of a given type at the specified index in the list.
+    /// </summary>
+    /// <typeparam name="TFilter">The filter type to search for.</typeparam>
+    /// <param name="index">The index of the filter.</param>
+    /// <returns>The filter of the given type at the specified index.</returns>
+    /// <exception cref="NotFilterTypeException">Thrown if the type is not a filter type.</exception>
+    /// <exception cref="KeyNotFoundException">Thrown if no filter is found at the index.</exception>
+    public TFilter Get<TFilter>(int index) where TFilter : notnull, IFilterCollectable
+    {
+        IEnumerable<TFilter> filters = Get<TFilter>();
+        return filters.Any() ? filters.ElementAt(index) : throw new KeyNotFoundException();
+    }
+
+    /// <summary>
+    /// Returns a filter of a given type at the specified index, or null if it does not exist.
+    /// </summary>
+    /// <typeparam name="TFilter">The filter type to search for.</typeparam>
+    /// <param name="index">The index of the filter.</param>
+    /// <returns>The filter at the specified index, or null if it does not exist.</returns>
+    /// <exception cref="NotFilterTypeException">Thrown if the type is not a filter type.</exception>
+    public TFilter? GetOrDefault<TFilter>(int index) where TFilter : IFilterCollectable
+    {
+        IEnumerable<TFilter> filters = Get<TFilter>();
+        return filters.Any() ? filters.ElementAt(index) : default;
+    }
+
+    /// <inheritdoc/>
+    public IEnumerator<IFilterCollectable> GetEnumerator() => CompletedFilters.GetEnumerator();
+
+    /// <inheritdoc/>
+    IEnumerator IEnumerable.GetEnumerator() => CompletedFilters.GetEnumerator();
 }

src/Telegrator/Core/Filters/FilterExecutionContext.cs

@@ -1,78 +1,85 @@
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
 
-namespace Telegrator.Core.Filters
+namespace Telegrator.Core.Filters;
+
+/// <summary>
+/// Represents the context for filter execution, including update, input, and additional data.
+/// </summary>
+/// <typeparam name="T">The type of the input for the filter.</typeparam>
+public class FilterExecutionContext<T> where T : class
 {
     /// <summary>
-    /// Represents the context for filter execution, including update, input, and additional data.
+    /// Gets the <see cref="ITelegramBotInfo"/> for the current context.
     /// </summary>
-    /// <typeparam name="T">The type of the input for the filter.</typeparam>
-    public class FilterExecutionContext<T> where T : class
+    public IUpdateRouter UpdateRouter { get; }
+
+    /// <summary>
+    /// Gets the <see cref="ITelegramBotInfo"/> for the current context.
+    /// </summary>
+    public ITelegramBotInfo BotInfo { get; }
+
+    /// <summary>
+    /// Gets the additional data dictionary for the context.
+    /// </summary>
+    public Dictionary<string, object> Data { get; }
+
+    /// <summary>
+    /// Gets the list of completed filters for the context.
+    /// </summary>
+    public CompletedFiltersList CompletedFilters { get; }
+
+    /// <summary>
+    /// Gets the <see cref="Update"/> being processed.
+    /// </summary>
+    public Update Update { get; }
+
+    /// <summary>
+    /// Gets the <see cref="UpdateType"/> of the update.
+    /// </summary>
+    public UpdateType Type { get; }
+
+    /// <summary>
+    /// Gets the input object for the filter.
+    /// </summary>
+    public T Input { get; }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="FilterExecutionContext{T}"/> class with all parameters.
+    /// </summary>
+    /// <param name="router">The router, that invoked filter.</param>
+    /// <param name="botInfo">The bot info.</param>
+    /// <param name="update">The update.</param>
+    /// <param name="input">The input object.</param>
+    /// <param name="data">The additional data dictionary.</param>
+    /// <param name="completedFilters">The list of completed filters.</param>
+    public FilterExecutionContext(IUpdateRouter router, ITelegramBotInfo botInfo, Update update, T input, Dictionary<string, object> data, CompletedFiltersList completedFilters)
     {
-        /// <summary>
-        /// Gets the <see cref="ITelegramBotInfo"/> for the current context.
-        /// </summary>
-        public ITelegramBotInfo BotInfo { get; }
-
-        /// <summary>
-        /// Gets the additional data dictionary for the context.
-        /// </summary>
-        public Dictionary<string, object> Data { get; }
-
-        /// <summary>
-        /// Gets the list of completed filters for the context.
-        /// </summary>
-        public CompletedFiltersList CompletedFilters { get; }
-
-        /// <summary>
-        /// Gets the <see cref="Update"/> being processed.
-        /// </summary>
-        public Update Update { get; }
-
-        /// <summary>
-        /// Gets the <see cref="UpdateType"/> of the update.
-        /// </summary>
-        public UpdateType Type { get; }
-
-        /// <summary>
-        /// Gets the input object for the filter.
-        /// </summary>
-        public T Input { get; }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="FilterExecutionContext{T}"/> class with all parameters.
-        /// </summary>
-        /// <param name="botInfo">The bot info.</param>
-        /// <param name="update">The update.</param>
-        /// <param name="input">The input object.</param>
-        /// <param name="data">The additional data dictionary.</param>
-        /// <param name="completedFilters">The list of completed filters.</param>
-        public FilterExecutionContext(ITelegramBotInfo botInfo, Update update, T input, Dictionary<string, object> data, CompletedFiltersList completedFilters)
-        {
-            BotInfo = botInfo;
-            Data = data;
-            CompletedFilters = completedFilters;
-            Update = update;
-            Type = update.Type;
-            Input = input;
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="FilterExecutionContext{T}"/> class with default data and filters.
-        /// </summary>
-        /// <param name="botInfo">The bot info.</param>
-        /// <param name="update">The update.</param>
-        /// <param name="input">The input object.</param>
-        public FilterExecutionContext(ITelegramBotInfo botInfo, Update update, T input)
-            : this(botInfo, update, input, [], []) { }
-
-        /// <summary>
-        /// Creates a child context for a different input type, sharing the same data and completed filters.
-        /// </summary>
-        /// <typeparam name="C">The type of the new input.</typeparam>
-        /// <param name="input">The new input object.</param>
-        /// <returns>A new <see cref="FilterExecutionContext{C}"/> instance.</returns>
-        public FilterExecutionContext<C> CreateChild<C>(C input) where C : class
-            => new FilterExecutionContext<C>(BotInfo, Update, input, Data, CompletedFilters);
+        UpdateRouter = router;
+        BotInfo = botInfo;
+        Data = data;
+        CompletedFilters = completedFilters;
+        Update = update;
+        Type = update.Type;
+        Input = input;
     }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="FilterExecutionContext{T}"/> class with default data and filters.
+    /// </summary>
+    /// <param name="router">The router, that invoked filter.</param>
+    /// <param name="botInfo">The bot info.</param>
+    /// <param name="update">The update.</param>
+    /// <param name="input">The input object.</param>
+    public FilterExecutionContext(IUpdateRouter router, ITelegramBotInfo botInfo, Update update, T input)
+        : this(router, botInfo, update, input, [], []) { }
+
+    /// <summary>
+    /// Creates a child context for a different input type, sharing the same data and completed filters.
+    /// </summary>
+    /// <typeparam name="C">The type of the new input.</typeparam>
+    /// <param name="input">The new input object.</param>
+    /// <returns>A new <see cref="FilterExecutionContext{C}"/> instance.</returns>
+    public FilterExecutionContext<C> CreateChild<C>(C input) where C : class
+        => new FilterExecutionContext<C>(UpdateRouter, BotInfo, Update, input, Data, CompletedFilters);
 }

src/Telegrator/Core/Filters/IFilter.cs

@@ -1,39 +1,50 @@
-namespace Telegrator.Core.Filters
+namespace Telegrator.Core.Filters;
+
+/// <summary>
+/// Interface for filters that have a name for identification and debugging purposes.
+/// </summary>
+public interface INamedFilter
 {
     /// <summary>
-    /// Interface for filters that have a name for identification and debugging purposes.
+    /// Gets the name of the filter.
     /// </summary>
-    public interface INamedFilter
-    {
-        /// <summary>
-        /// Gets the name of the filter.
-        /// </summary>
-        public string Name { get; }
-    }
-
-    /// <summary>
-    /// Interface for filters that can be collected into a completed filters list.
-    /// Provides information about whether a filter should be tracked during execution.
-    /// </summary>
-    public interface IFilterCollectable
-    {
-        /// <summary>
-        /// Gets if filter can be collected to <see cref="CompletedFiltersList"/>
-        /// </summary>
-        public bool IsCollectible { get; }
-    }
-
-    /// <summary>
-    /// Represents a filter for a specific update type.
-    /// </summary>
-    /// <typeparam name="T">The type of the update to filter.</typeparam>
-    public interface IFilter<T> : IFilterCollectable where T : class
-    {
-        /// <summary>
-        /// Determines whether the filter can pass for the given context.
-        /// </summary>
-        /// <param name="info">The filter execution context.</param>
-        /// <returns>True if the filter passes; otherwise, false.</returns>
-        public bool CanPass(FilterExecutionContext<T> info);
-    }
+    public string Name { get; }
+}
+
+/// <summary>
+/// Interface for filters that can be collected into a completed filters list.
+/// Provides information about whether a filter should be tracked during execution.
+/// </summary>
+public interface IFilterCollectable
+{
+    /// <summary>
+    /// Gets if filter can be collected to <see cref="CompletedFiltersList"/>
+    /// </summary>
+    public bool IsCollectible { get; }
+}
+
+/// <summary>
+/// Represents a filter for a specific update type.
+/// </summary>
+/// <typeparam name="T">The type of the update to filter.</typeparam>
+public interface IFilter<T> : IFilterCollectable where T : class
+{
+    /// <summary>
+    /// Determines whether the filter can pass for the given context.
+    /// </summary>
+    /// <param name="info">The filter execution context.</param>
+    /// <returns>True if the filter passes; otherwise, false.</returns>
+    public bool CanPass(FilterExecutionContext<T> info);
+}
+
+/// <summary>
+/// Represents a filter that joins multiple filters together.
+/// </summary>
+/// <typeparam name="T">The type of the input for the filter.</typeparam>
+public interface IJoinedFilter<T> : IFilter<T> where T : class
+{
+    /// <summary>
+    /// Gets the array of joined filters.
+    /// </summary>
+    public IFilter<T>[] Filters { get; }
 }

src/Telegrator/Core/Filters/IJoinedFilter.cs

@@ -1,14 +0,0 @@
-namespace Telegrator.Core.Filters
-{
-    /// <summary>
-    /// Represents a filter that joins multiple filters together.
-    /// </summary>
-    /// <typeparam name="T">The type of the input for the filter.</typeparam>
-    public interface IJoinedFilter<T> : IFilter<T> where T : class
-    {
-        /// <summary>
-        /// Gets the array of joined filters.
-        /// </summary>
-        public IFilter<T>[] Filters { get; }
-    }
-}

src/Telegrator/Core/Handlers/AbstractUpdateHandler.cs

@@ -3,88 +3,93 @@ using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
 using Telegrator.Core.Descriptors;
 using Telegrator.Core.Filters;
+using Telegrator.Core.States;
 using Telegrator.Handlers;
 
-namespace Telegrator.Core.Handlers
+namespace Telegrator.Core.Handlers;
+
+/// <summary>
+/// Abstract handler for Telegram updates of type <typeparamref name="TUpdate"/>.
+/// </summary>
+public abstract class AbstractUpdateHandler<TUpdate> : UpdateHandlerBase, IHandlerContainerFactory, IAbstractUpdateHandler<TUpdate> where TUpdate : class
 {
     /// <summary>
-    /// Abstract handler for Telegram updates of type <typeparamref name="TUpdate"/>.
+    /// Handler container for the current update.
     /// </summary>
-    public abstract class AbstractUpdateHandler<TUpdate> : UpdateHandlerBase, IHandlerContainerFactory, IAbstractUpdateHandler<TUpdate> where TUpdate : class
+    public IHandlerContainer<TUpdate> Container { get; private set; } = default!;
+
+    /// <summary>
+    /// Telegram Bot client associated with the current container.
+    /// </summary>
+    protected ITelegramBotClient Client => Container.Client;
+
+    /// <summary>
+    /// Incoming update of type <typeparamref name="TUpdate"/>.
+    /// </summary>
+    protected TUpdate Input => Container.ActualUpdate;
+
+    /// <summary>
+    /// The Telegram update being handled.
+    /// </summary>
+    protected Update HandlingUpdate => Container.HandlingUpdate;
+
+    /// <summary>
+    /// Additional data associated with the handler execution.
+    /// </summary>
+    protected Dictionary<string, object> ExtraData => Container.ExtraData;
+
+    /// <summary>
+    /// List of successfully passed filters.
+    /// </summary>
+    protected CompletedFiltersList CompletedFilters => Container.CompletedFilters;
+
+    /// <summary>
+    /// Provider for awaiting asynchronous operations.
+    /// </summary>
+    protected IAwaitingProvider AwaitingProvider => Container.AwaitingProvider;
+
+    /// <summary>
+    /// Storage of bot states.
+    /// </summary>
+    protected IStateStorage StateStorage => Container.StateStorage;
+
+    /// <summary>
+    /// Initializes a new instance and checks that the update type matches <typeparamref name="TUpdate"/>.
+    /// </summary>
+    /// <param name="handlingUpdateType">The type of update to handle.</param>
+    protected AbstractUpdateHandler(UpdateType handlingUpdateType) : base(handlingUpdateType)
     {
-        /// <summary>
-        /// Handler container for the current update.
-        /// </summary>
-        public IHandlerContainer<TUpdate> Container { get; private set; } = default!;
-
-        /// <summary>
-        /// Telegram Bot client associated with the current container.
-        /// </summary>
-        protected ITelegramBotClient Client => Container.Client;
-
-        /// <summary>
-        /// Incoming update of type <typeparamref name="TUpdate"/>.
-        /// </summary>
-        protected TUpdate Input => Container.ActualUpdate;
-
-        /// <summary>
-        /// The Telegram update being handled.
-        /// </summary>
-        protected Update HandlingUpdate => Container.HandlingUpdate;
-
-        /// <summary>
-        /// Additional data associated with the handler execution.
-        /// </summary>
-        protected Dictionary<string, object> ExtraData => Container.ExtraData;
-
-        /// <summary>
-        /// List of successfully passed filters.
-        /// </summary>
-        protected CompletedFiltersList CompletedFilters => Container.CompletedFilters;
-
-        /// <summary>
-        /// Provider for awaiting asynchronous operations.
-        /// </summary>
-        protected IAwaitingProvider AwaitingProvider => Container.AwaitingProvider;
-
-        /// <summary>
-        /// Initializes a new instance and checks that the update type matches <typeparamref name="TUpdate"/>.
-        /// </summary>
-        /// <param name="handlingUpdateType">The type of update to handle.</param>
-        protected AbstractUpdateHandler(UpdateType handlingUpdateType) : base(handlingUpdateType)
-        {
-            if (!HandlingUpdateType.IsValidUpdateObject<TUpdate>())
-                throw new Exception();
-        }
-
-        /// <summary>
-        /// Creates a handler container for the specified awaiting provider and handler info.
-        /// </summary>
-        /// <param name="handlerInfo">The handler descriptor info.</param>
-        /// <returns>The created handler container.</returns>
-        public virtual IHandlerContainer CreateContainer(DescribedHandlerDescriptor handlerInfo)
-        {
-            return new HandlerContainer<TUpdate>(handlerInfo);
-        }
-
-        /// <summary>
-        /// Executes the handler logic using the specified container.
-        /// </summary>
-        /// <param name="container">The handler container.</param>
-        /// <param name="cancellationToken">Cancellation token.</param>
-        /// <returns>A task representing the asynchronous operation.</returns>
-        protected override sealed async Task<Result> ExecuteInternal(IHandlerContainer container, CancellationToken cancellationToken)
-        {
-            Container = (IHandlerContainer<TUpdate>)container;
-            return await Execute(Container, cancellationToken);
-        }
-
-        /// <summary>
-        /// Abstract method to execute the update handling logic.
-        /// </summary>
-        /// <param name="container">The handler container.</param>
-        /// <param name="cancellation">Cancellation token.</param>
-        /// <returns>A task representing the asynchronous operation.</returns>
-        public abstract Task<Result> Execute(IHandlerContainer<TUpdate> container, CancellationToken cancellation);
+        if (!HandlingUpdateType.IsValidUpdateObject<TUpdate>())
+            throw new Exception();
     }
+
+    /// <summary>
+    /// Creates a handler container for the specified awaiting provider and handler info.
+    /// </summary>
+    /// <param name="handlerInfo">The handler descriptor info.</param>
+    /// <returns>The created handler container.</returns>
+    public virtual IHandlerContainer CreateContainer(DescribedHandlerDescriptor handlerInfo)
+    {
+        return new HandlerContainer<TUpdate>(handlerInfo);
+    }
+
+    /// <summary>
+    /// Executes the handler logic using the specified container.
+    /// </summary>
+    /// <param name="container">The handler container.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>A task representing the asynchronous operation.</returns>
+    protected override sealed async Task<Result> ExecuteInternal(IHandlerContainer container, CancellationToken cancellationToken)
+    {
+        Container = (IHandlerContainer<TUpdate>)container;
+        return await Execute(Container, cancellationToken);
+    }
+
+    /// <summary>
+    /// Abstract method to execute the update handling logic.
+    /// </summary>
+    /// <param name="container">The handler container.</param>
+    /// <param name="cancellation">Cancellation token.</param>
+    /// <returns>A task representing the asynchronous operation.</returns>
+    public abstract Task<Result> Execute(IHandlerContainer<TUpdate> container, CancellationToken cancellation);
 }

src/Telegrator/Core/Handlers/BranchingUpdateHandler.cs

@@ -6,160 +6,159 @@ using Telegrator.Core.Descriptors;
 using Telegrator.Core.Filters;
 using Telegrator.Handlers;
 
-namespace Telegrator.Core.Handlers
+namespace Telegrator.Core.Handlers;
+
+/// <summary>
+/// Abstract base class for handlers that support branching execution based on different methods.
+/// Allows multiple handler methods to be defined in a single class, each with its own filters.
+/// </summary>
+/// <typeparam name="TUpdate">The type of update being handled.</typeparam>
+public abstract class BranchingUpdateHandler<TUpdate> : AbstractUpdateHandler<TUpdate>, IHandlerContainerFactory, ICustomDescriptorsProvider where TUpdate : class
 {
     /// <summary>
-    /// Abstract base class for handlers that support branching execution based on different methods.
-    /// Allows multiple handler methods to be defined in a single class, each with its own filters.
+    /// The method info for the current branch being executed.
     /// </summary>
-    /// <typeparam name="TUpdate">The type of update being handled.</typeparam>
-    public abstract class BranchingUpdateHandler<TUpdate> : AbstractUpdateHandler<TUpdate>, IHandlerContainerFactory, ICustomDescriptorsProvider where TUpdate : class
+    private MethodInfo? branchMethodInfo = null;
+
+    /// <summary>
+    /// Gets the binding flags used to discover branch methods.
+    /// </summary>
+    protected virtual BindingFlags BranchesBindingFlags => BindingFlags.DeclaredOnly | BindingFlags.Instance | BindingFlags.Public;
+
+    /// <summary>
+    /// Gets the allowed return types for branch methods.
+    /// </summary>
+    protected virtual Type[] AllowedBranchReturnTypes => [typeof(void), typeof(Task<Result>)];
+
+    /// <summary>
+    /// Gets the cancellation token for the current execution.
+    /// </summary>
+    protected CancellationToken Cancellation { get; private set; } = default;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="BranchingUpdateHandler{TUpdate}"/> class.
+    /// </summary>
+    /// <param name="handlingUpdateType">The type of update this handler processes.</param>
+    protected BranchingUpdateHandler(UpdateType handlingUpdateType)
+        : base(handlingUpdateType) { }
+
+    /// <summary>
+    /// Describes all handler branches in this class.
+    /// </summary>
+    /// <returns>A collection of handler descriptors for each branch method.</returns>
+    /// <exception cref="Exception">Thrown when no branch methods are found.</exception>
+    public IEnumerable<HandlerDescriptor> DescribeHandlers()
     {
-        /// <summary>
-        /// The method info for the current branch being executed.
-        /// </summary>
-        private MethodInfo? branchMethodInfo = null;
+        Type thisType = GetType();
+        UpdateHandlerAttributeBase updateHandlerAttribute = HandlerInspector.GetHandlerAttribute(thisType);
+        IEnumerable<IFilter<Update>> handlerFilters = HandlerInspector.GetFilterAttributes(thisType, HandlingUpdateType);
 
-        /// <summary>
-        /// Gets the binding flags used to discover branch methods.
-        /// </summary>
-        protected virtual BindingFlags BranchesBindingFlags => BindingFlags.DeclaredOnly | BindingFlags.Instance | BindingFlags.Public;
+        MethodInfo[] handlerBranches = thisType.GetMethods().Where(branch => branch.DeclaringType == thisType).ToArray();
+        if (handlerBranches.Length == 0)
+            throw new Exception();
 
-        /// <summary>
-        /// Gets the allowed return types for branch methods.
-        /// </summary>
-        protected virtual Type[] AllowedBranchReturnTypes => [typeof(void), typeof(Task<Result>)];
+        foreach (MethodInfo branch in handlerBranches)
+            yield return DescribeBranch(branch, updateHandlerAttribute, handlerFilters);
+    }
 
-        /// <summary>
-        /// Gets the cancellation token for the current execution.
-        /// </summary>
-        protected CancellationToken Cancellation { get; private set; } = default;
+    /// <summary>
+    /// Describes a specific branch method.
+    /// </summary>
+    /// <param name="branch">The branch method to describe.</param>
+    /// <param name="handlerAttribute">The handler attribute for the class.</param>
+    /// <param name="handlerFilters">The filters applied to the class.</param>
+    /// <returns>A handler descriptor for the branch method.</returns>
+    /// <exception cref="Exception">Thrown when the branch method has parameters or invalid return type.</exception>
+    protected virtual HandlerDescriptor DescribeBranch(MethodInfo branch, UpdateHandlerAttributeBase handlerAttribute, IEnumerable<IFilter<Update>> handlerFilters)
+    {
+        Type thisType = GetType();
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="BranchingUpdateHandler{TUpdate}"/> class.
-        /// </summary>
-        /// <param name="handlingUpdateType">The type of update this handler processes.</param>
-        protected BranchingUpdateHandler(UpdateType handlingUpdateType)
-            : base(handlingUpdateType) { }
+        if (branch.GetParameters().Length != 0)
+            throw new Exception("Branch method must have no parameters.");
 
-        /// <summary>
-        /// Describes all handler branches in this class.
-        /// </summary>
-        /// <returns>A collection of handler descriptors for each branch method.</returns>
-        /// <exception cref="Exception">Thrown when no branch methods are found.</exception>
-        public IEnumerable<HandlerDescriptor> DescribeHandlers()
+        if (!AllowedBranchReturnTypes.Any(branch.ReturnType.Equals))
+            throw new Exception("Branch method must have one of allowed return types. [void, Task<Result>]");
+
+        try
         {
-            Type thisType = GetType();
-            UpdateHandlerAttributeBase updateHandlerAttribute = HandlerInspector.GetHandlerAttribute(thisType);
-            IEnumerable<IFilter<Update>> handlerFilters = HandlerInspector.GetFilterAttributes(thisType, HandlingUpdateType);
-
-            MethodInfo[] handlerBranches = thisType.GetMethods().Where(branch => branch.DeclaringType == thisType).ToArray();
-            if (handlerBranches.Length == 0)
-                throw new Exception();
-
-            foreach (MethodInfo branch in handlerBranches)
-                yield return DescribeBranch(branch, updateHandlerAttribute, handlerFilters);
+            handlerAttribute = HandlerInspector.GetHandlerAttribute(branch);
+        }
+        catch
+        {
+            _ = 0xBAD + 0xC0DE;
         }
 
-        /// <summary>
-        /// Describes a specific branch method.
-        /// </summary>
-        /// <param name="branch">The branch method to describe.</param>
-        /// <param name="handlerAttribute">The handler attribute for the class.</param>
-        /// <param name="handlerFilters">The filters applied to the class.</param>
-        /// <returns>A handler descriptor for the branch method.</returns>
-        /// <exception cref="Exception">Thrown when the branch method has parameters or invalid return type.</exception>
-        protected virtual HandlerDescriptor DescribeBranch(MethodInfo branch, UpdateHandlerAttributeBase handlerAttribute, IEnumerable<IFilter<Update>> handlerFilters)
+        List<IFilter<Update>> branchFiltersList = HandlerInspector.GetFilterAttributes(branch, HandlingUpdateType).ToList();
+        branchFiltersList.AddRange(handlerFilters);
+
+        DescriptorFiltersSet filtersSet = new DescriptorFiltersSet(
+            handlerAttribute,
+            HandlerInspector.GetStateKeeperAttribute(branch),
+            branchFiltersList.ToArray());
+
+        return new HandlerBranchDescriptor(thisType, branch, HandlingUpdateType, handlerAttribute.GetIndexer(), filtersSet);
+    }
+
+    /// <summary>
+    /// Creates a handler container for this branching handler.
+    /// </summary>
+    /// <param name="handlerInfo">The handler information.</param>
+    /// <returns>A handler container for this branching handler.</returns>
+    /// <exception cref="Exception">Thrown when the awaiting provider is not of the expected type.</exception>
+    public override IHandlerContainer CreateContainer(DescribedHandlerDescriptor handlerInfo)
+    {
+        return new HandlerContainer<TUpdate>(handlerInfo);
+    }
+
+    /// <summary>
+    /// Executes the current branch method.
+    /// </summary>
+    /// <param name="container">The handler container.</param>
+    /// <param name="cancellation">The cancellation token.</param>
+    /// <exception cref="Exception">Thrown when no branch method is set.</exception>
+    public override async Task<Result> Execute(IHandlerContainer<TUpdate> container, CancellationToken cancellation)
+    {
+        if (branchMethodInfo is null)
+            throw new Exception();
+
+        Cancellation = cancellation;
+        return await BranchExecuteWrapper(container, branchMethodInfo);
+    }
+
+    /// <summary>
+    /// Wraps the execution of a branch method, handling both void and Task return types.
+    /// </summary>
+    /// <param name="container">The handler container.</param>
+    /// <param name="methodInfo">The method to execute.</param>
+    protected virtual async Task<Result> BranchExecuteWrapper(IHandlerContainer<TUpdate> container, MethodInfo methodInfo)
+    {
+        if (methodInfo.ReturnType == typeof(void))
         {
-            Type thisType = GetType();
-
-            if (branch.GetParameters().Length != 0)
-                throw new Exception("Branch method must have no parameters.");
-
-            if (!AllowedBranchReturnTypes.Any(branch.ReturnType.Equals))
-                throw new Exception("Branch method must have one of allowed return types. [void, Task<Result>]");
-
-            try
-            {
-                handlerAttribute = HandlerInspector.GetHandlerAttribute(branch);
-            }
-            catch
-            {
-                _ = 0xBAD + 0xC0DE;
-            }
-
-            List<IFilter<Update>> branchFiltersList = HandlerInspector.GetFilterAttributes(branch, HandlingUpdateType).ToList();
-            branchFiltersList.AddRange(handlerFilters);
-
-            DescriptorFiltersSet filtersSet = new DescriptorFiltersSet(
-                handlerAttribute,
-                HandlerInspector.GetStateKeeperAttribute(branch),
-                branchFiltersList.ToArray());
-
-            return new HandlerBranchDescriptor(thisType, branch, HandlingUpdateType, handlerAttribute.GetIndexer(), filtersSet);
+            methodInfo.Invoke(this, []);
+            return Result.Ok();
         }
-
-        /// <summary>
-        /// Creates a handler container for this branching handler.
-        /// </summary>
-        /// <param name="handlerInfo">The handler information.</param>
-        /// <returns>A handler container for this branching handler.</returns>
-        /// <exception cref="Exception">Thrown when the awaiting provider is not of the expected type.</exception>
-        public override IHandlerContainer CreateContainer(DescribedHandlerDescriptor handlerInfo)
+        else
         {
-            return new HandlerContainer<TUpdate>(handlerInfo);
+            object branchReturn = methodInfo.Invoke(this, []);
+            if (branchReturn is not Task<Result> branchTask)
+                throw new InvalidOperationException();
+            
+            return await branchTask;
         }
+    }
 
-        /// <summary>
-        /// Executes the current branch method.
-        /// </summary>
-        /// <param name="container">The handler container.</param>
-        /// <param name="cancellation">The cancellation token.</param>
-        /// <exception cref="Exception">Thrown when no branch method is set.</exception>
-        public override async Task<Result> Execute(IHandlerContainer<TUpdate> container, CancellationToken cancellation)
+    private class HandlerBranchDescriptor : HandlerDescriptor
+    {
+        public HandlerBranchDescriptor(Type decalringType, MethodInfo method, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters) : base(DescriptorType.General, decalringType, updateType, indexer, filters)
         {
-            if (branchMethodInfo is null)
-                throw new Exception();
-
-            Cancellation = cancellation;
-            return await BranchExecuteWrapper(container, branchMethodInfo);
-        }
-
-        /// <summary>
-        /// Wraps the execution of a branch method, handling both void and Task return types.
-        /// </summary>
-        /// <param name="container">The handler container.</param>
-        /// <param name="methodInfo">The method to execute.</param>
-        protected virtual async Task<Result> BranchExecuteWrapper(IHandlerContainer<TUpdate> container, MethodInfo methodInfo)
-        {
-            if (methodInfo.ReturnType == typeof(void))
+            DisplayString = HandlerInspector.GetDisplayName(method) ?? string.Format("{0}+{1}", method.DeclaringType.Name, method.Name);
+            LazyInitialization = handler =>
             {
-                methodInfo.Invoke(this, []);
-                return Result.Ok();
-            }
-            else
-            {
-                object branchReturn = methodInfo.Invoke(this, []);
-                if (branchReturn is not Task<Result> branchTask)
-                    throw new InvalidOperationException();
-                
-                return await branchTask;
-            }
-        }
+                if (handler is not BranchingUpdateHandler<TUpdate> brancher)
+                    throw new InvalidDataException();
 
-        private class HandlerBranchDescriptor : HandlerDescriptor
-        {
-            public HandlerBranchDescriptor(Type decalringType, MethodInfo method, UpdateType updateType, DescriptorIndexer indexer, DescriptorFiltersSet filters) : base(DescriptorType.General, decalringType, updateType, indexer, filters)
-            {
-                DisplayString = HandlerInspector.GetDisplayName(method) ?? string.Format("{0}+{1}", method.DeclaringType.Name, method.Name);
-                LazyInitialization = handler =>
-                {
-                    if (handler is not BranchingUpdateHandler<TUpdate> brancher)
-                        throw new InvalidDataException();
-
-                    brancher.branchMethodInfo = method;
-                };
-            }
+                brancher.branchMethodInfo = method;
+            };
         }
     }
 }

src/Telegrator/Core/Handlers/Building/HandlerBuilderBase.cs

@@ -1,200 +1,179 @@
 using Telegram.Bot.Types;
 using Telegram.Bot.Types.Enums;
-using Telegrator.Annotations.StateKeeping;
 using Telegrator.Core.Descriptors;
 using Telegrator.Core.Filters;
-using Telegrator.Core.StateKeeping;
+using Telegrator.Core.States;
+using Telegrator.Filters;
 
-namespace Telegrator.Core.Handlers.Building
+namespace Telegrator.Core.Handlers.Building;
+
+/// <summary>
+/// Base class for building handler descriptors and managing handler filters.
+/// </summary>
+public abstract class HandlerBuilderBase(Type buildingHandlerType, UpdateType updateType, IHandlersCollection? handlerCollection) : IHandlerBuilder
 {
+    private static int HandlerServiceKeyIndex = 0;
+
     /// <summary>
-    /// Base class for building handler descriptors and managing handler filters.
+    /// <see cref="IHandlersCollection"/> to which new builded handlers is adding
     /// </summary>
-    public abstract class HandlerBuilderBase(Type buildingHandlerType, UpdateType updateType, IHandlersCollection? handlerCollection) : IHandlerBuilder
+    protected readonly IHandlersCollection? HandlerCollection = handlerCollection;
+
+    /// <summary>
+    /// <see cref="UpdateType"/> of building handler
+    /// </summary>
+    protected readonly UpdateType UpdateType = updateType;
+    
+    /// <summary>
+    /// Type of handler to build
+    /// </summary>
+    protected readonly Type BuildingHandlerType = buildingHandlerType;
+    
+    /// <summary>
+    /// Filters applied to handler
+    /// </summary>
+    protected readonly List<IFilter<Update>> Filters = [];
+
+    /// <summary>
+    /// <see cref="DescriptorIndexer"/> of building handler
+    /// </summary>
+    protected DescriptorIndexer Indexer = new DescriptorIndexer(0, 0, 0);
+    
+    /// <summary>
+    /// Update validation filter of building handler
+    /// </summary>
+    protected IFilter<Update>? ValidateFilter;
+    
+    /// <summary>
+    /// State keeper of building handler
+    /// </summary>
+    protected IFilter<Update>? StateKeeper;
+
+    /// <summary>
+    /// Builds an implicit <see cref="HandlerDescriptor"/> for the specified handler instance.
+    /// </summary>
+    /// <param name="instance">The <see cref="UpdateHandlerBase"/> instance.</param>
+    /// <returns>The created <see cref="HandlerDescriptor"/>.</returns>
+    protected HandlerDescriptor BuildImplicitDescriptor(UpdateHandlerBase instance)
     {
-        private static int HandlerServiceKeyIndex = 0;
+        object handlerServiceKey = GetImplicitHandlerServiceKey(BuildingHandlerType);
 
-        /// <summary>
-        /// <see cref="IHandlersCollection"/> to ehich new builded handlers is adding
-        /// </summary>
-        protected readonly IHandlersCollection? HandlerCollection = handlerCollection;
+        HandlerDescriptor descriptor = new HandlerDescriptor(
+            DescriptorType.Implicit, BuildingHandlerType,
+            UpdateType, Indexer, ValidateFilter,
+            Filters.ToArray(), StateKeeper,
+            handlerServiceKey, instance);
 
-        /// <summary>
-        /// <see cref="UpdateType"/> of building handler
-        /// </summary>
-        protected readonly UpdateType UpdateType = updateType;
-        
-        /// <summary>
-        /// Type of handler to build
-        /// </summary>
-        protected readonly Type BuildingHandlerType = buildingHandlerType;
-        
-        /// <summary>
-        /// Filters applied to handler
-        /// </summary>
-        protected readonly List<IFilter<Update>> Filters = [];
+        HandlerCollection?.AddDescriptor(descriptor);
+        return descriptor;
+    }
 
-        /// <summary>
-        /// <see cref="DescriptorIndexer"/> of building handler
-        /// </summary>
-        protected DescriptorIndexer Indexer = new DescriptorIndexer(0, 0, 0);
-        
-        /// <summary>
-        /// Update validation filter of building handler
-        /// </summary>
-        protected IFilter<Update>? ValidateFilter;
-        
-        /// <summary>
-        /// State keeper of building handler
-        /// </summary>
-        protected IFilter<Update>? StateKeeper;
+    /// <summary>
+    /// Gets a unique service key for an implicit handler type.
+    /// </summary>
+    /// <param name="BuildingHandlerType">The handler type.</param>
+    /// <returns>A unique service key string.</returns>
+    public static object GetImplicitHandlerServiceKey(Type BuildingHandlerType)
+        => string.Format("ImplicitHandler_{0}+{1}", HandlerServiceKeyIndex++, BuildingHandlerType.Name);
 
-        /// <summary>
-        /// Builds an implicit <see cref="HandlerDescriptor"/> for the specified handler instance.
-        /// </summary>
-        /// <param name="instance">The <see cref="UpdateHandlerBase"/> instance.</param>
-        /// <returns>The created <see cref="HandlerDescriptor"/>.</returns>
-        protected HandlerDescriptor BuildImplicitDescriptor(UpdateHandlerBase instance)
-        {
-            object handlerServiceKey = GetImplicitHandlerServiceKey(BuildingHandlerType);
+    /// <summary>
+    /// Sets the update validating action for the handler.
+    /// </summary>
+    /// <param name="validateAction">The <see cref="UpdateValidateAction"/> to use.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetUpdateValidating(UpdateValidateAction validateAction)
+    {
+        ValidateFilter = new UpdateValidateFilter(validateAction);
+    }
 
-            HandlerDescriptor descriptor = new HandlerDescriptor(
-                DescriptorType.Implicit, BuildingHandlerType,
-                UpdateType, Indexer, ValidateFilter,
-                Filters.ToArray(), StateKeeper,
-                handlerServiceKey, instance);
+    /// <summary>
+    /// Sets the concurrency level for the handler.
+    /// </summary>
+    /// <param name="concurrency">The concurrency value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetConcurreny(int concurrency)
+    {
+        Indexer = Indexer.UpdateImportance(concurrency);
+    }
 
-            HandlerCollection?.AddDescriptor(descriptor);
-            return descriptor;
-        }
+    /// <summary>
+    /// Sets the priority for the handler.
+    /// </summary>
+    /// <param name="priority">The priority value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetPriority(int priority)
+    {
+        Indexer = Indexer.UpdatePriority(priority);
+    }
 
-        /// <summary>
-        /// Gets a unique service key for an implicit handler type.
-        /// </summary>
-        /// <param name="BuildingHandlerType">The handler type.</param>
-        /// <returns>A unique service key string.</returns>
-        public static object GetImplicitHandlerServiceKey(Type BuildingHandlerType)
-            => string.Format("ImplicitHandler_{0}+{1}", HandlerServiceKeyIndex++, BuildingHandlerType.Name);
+    /// <summary>
+    /// Sets both concurrency and priority for the handler.
+    /// </summary>
+    /// <param name="concurrency">The concurrency value.</param>
+    /// <param name="priority">The priority value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetIndexer(int concurrency, int priority)
+    {
+        Indexer = new DescriptorIndexer(0, concurrency, priority);
+    }
 
-        /// <summary>
-        /// Sets the update validating action for the handler.
-        /// </summary>
-        /// <param name="validateAction">The <see cref="UpdateValidateAction"/> to use.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetUpdateValidating(UpdateValidateAction validateAction)
-        {
-            ValidateFilter = new UpdateValidateFilter(validateAction);
-        }
+    /// <summary>
+    /// Adds a filter to the handler.
+    /// </summary>
+    /// <param name="filter">The <see cref="IFilter{Update}"/> to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddFilter(IFilter<Update> filter)
+    {
+        Filters.Add(filter);
+    }
 
-        /// <summary>
-        /// Sets the concurrency level for the handler.
-        /// </summary>
-        /// <param name="concurrency">The concurrency value.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetConcurreny(int concurrency)
-        {
-            Indexer = Indexer.UpdateImportance(concurrency);
-        }
+    /// <summary>
+    /// Adds multiple filters to the handler.
+    /// </summary>
+    /// <param name="filters">The filters to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddFilters(params IFilter<Update>[] filters)
+    {
+        Filters.AddRange(filters);
+    }
 
-        /// <summary>
-        /// Sets the priority for the handler.
-        /// </summary>
-        /// <param name="priority">The priority value.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetPriority(int priority)
-        {
-            Indexer = Indexer.UpdatePriority(priority);
-        }
+    /// <summary>
+    /// Sets a state keeper for the handler using a specific state and key resolver.
+    /// </summary>
+    /// <typeparam name="TKey">The key resolver.</typeparam>
+    /// <typeparam name="TValue">The state value.</typeparam>
+    /// <param name="state">The state value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetState<TKey, TValue>(TValue? state)
+        where TKey : IStateKeyResolver, new()
+        where TValue : IEquatable<TValue>
+    {
+        StateKeeper = new StateKeyFilter<TKey, TValue>(state);
+    }
 
-        /// <summary>
-        /// Sets both concurrency and priority for the handler.
-        /// </summary>
-        /// <param name="concurrency">The concurrency value.</param>
-        /// <param name="priority">The priority value.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetIndexer(int concurrency, int priority)
-        {
-            Indexer = new DescriptorIndexer(0, concurrency, priority);
-        }
+    /// <summary>
+    /// Adds a targeted filter for a specific filter target type.
+    /// </summary>
+    /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
+    /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
+    /// <param name="filter">The filter to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddTargetedFilter<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, IFilter<TFilterTarget> filter) where TFilterTarget : class
+    {
+        AnonymousTypeFilter anonymousTypeFilter = AnonymousTypeFilter.Compile(filter, getFilterringTarget);
+        Filters.Add(anonymousTypeFilter);
+    }
 
-        /// <summary>
-        /// Adds a filter to the handler.
-        /// </summary>
-        /// <param name="filter">The <see cref="IFilter{Update}"/> to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddFilter(IFilter<Update> filter)
-        {
-            Filters.Add(filter);
-        }
-
-        /// <summary>
-        /// Adds multiple filters to the handler.
-        /// </summary>
-        /// <param name="filters">The filters to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddFilters(params IFilter<Update>[] filters)
-        {
-            Filters.AddRange(filters);
-        }
-
-        /// <summary>
-        /// Sets a state keeper for the handler using a specific state and key resolver.
-        /// </summary>
-        /// <typeparam name="TKey">The type of the key.</typeparam>
-        /// <typeparam name="TState">The type of the state.</typeparam>
-        /// <typeparam name="TKeeper">The type of the state keeper.</typeparam>
-        /// <param name="myState">The state value.</param>
-        /// <param name="keyResolver">The key resolver.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetStateKeeper<TKey, TState, TKeeper>(TState myState, IStateKeyResolver<TKey> keyResolver)
-            where TKey : notnull
-            where TState : IEquatable<TState>
-            where TKeeper : StateKeeperBase<TKey, TState>, new()
-        {
-            StateKeeper = new StateKeepFilter<TKey, TState, TKeeper>(myState, keyResolver);
-        }
-
-        /// <summary>
-        /// Sets a state keeper for the handler using a special state and key resolver.
-        /// </summary>
-        /// <typeparam name="TKey">The type of the key.</typeparam>
-        /// <typeparam name="TState">The type of the state.</typeparam>
-        /// <typeparam name="TKeeper">The type of the state keeper.</typeparam>
-        /// <param name="specialState">The special state value.</param>
-        /// <param name="keyResolver">The key resolver.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetStateKeeper<TKey, TState, TKeeper>(SpecialState specialState, IStateKeyResolver<TKey> keyResolver)
-            where TKey : notnull
-            where TState : IEquatable<TState>
-            where TKeeper : StateKeeperBase<TKey, TState>, new()
-        {
-            StateKeeper = new StateKeepFilter<TKey, TState, TKeeper>(specialState, keyResolver);
-        }
-
-        /// <summary>
-        /// Adds a targeted filter for a specific filter target type.
-        /// </summary>
-        /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
-        /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
-        /// <param name="filter">The filter to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddTargetedFilter<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, IFilter<TFilterTarget> filter) where TFilterTarget : class
-        {
-            AnonymousTypeFilter anonymousTypeFilter = AnonymousTypeFilter.Compile(filter, getFilterringTarget);
-            Filters.Add(anonymousTypeFilter);
-        }
-
-        /// <summary>
-        /// Adds multiple targeted filters for a specific filter target type.
-        /// </summary>
-        /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
-        /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
-        /// <param name="filters">The filters to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddTargetedFilters<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, params IFilter<TFilterTarget>[] filters) where TFilterTarget : class
-        {
-            AnonymousCompiledFilter compiledPollingFilter = AnonymousCompiledFilter.Compile(filters, getFilterringTarget);
-            Filters.Add(compiledPollingFilter);
-        }
+    /// <summary>
+    /// Adds multiple targeted filters for a specific filter target type.
+    /// </summary>
+    /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
+    /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
+    /// <param name="filters">The filters to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddTargetedFilters<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, params IFilter<TFilterTarget>[] filters) where TFilterTarget : class
+    {
+        AnonymousCompiledFilter compiledPollingFilter = AnonymousCompiledFilter.Compile(filters, getFilterringTarget);
+        Filters.Add(compiledPollingFilter);
     }
 }

src/Telegrator/Core/Handlers/Building/IAwaiterHandlerBuilder.cs

@@ -1,19 +1,18 @@
-using Telegrator.Core.StateKeeping;
+using Telegrator.Core.States;
 
-namespace Telegrator.Core.Handlers.Building
+namespace Telegrator.Core.Handlers.Building;
+
+/// <summary>
+/// Defines a builder for awaiting handler logic for a specific update type.
+/// </summary>
+/// <typeparam name="TUpdate">The type of update to await.</typeparam>
+public interface IAwaiterHandlerBuilder<TUpdate> : IHandlerBuilder where TUpdate : class
 {
     /// <summary>
-    /// Defines a builder for awaiting handler logic for a specific update type.
+    /// Awaits an update using the specified key resolver and cancellation token.
     /// </summary>
-    /// <typeparam name="TUpdate">The type of update to await.</typeparam>
-    public interface IAwaiterHandlerBuilder<TUpdate> : IHandlerBuilder where TUpdate : class
-    {
-        /// <summary>
-        /// Awaits an update using the specified key resolver and cancellation token.
-        /// </summary>
-        /// <param name="keyResolver">The <see cref="IStateKeyResolver{TKey}"/> to resolve the key.</param>
-        /// <param name="cancellationToken">The cancellation token.</param>
-        /// <returns>A <see cref="Task{TUpdate}"/> representing the awaited update.</returns>
-        public Task<TUpdate> Await(IStateKeyResolver<long> keyResolver, CancellationToken cancellationToken = default);
-    }
+    /// <param name="keyResolver">The <see cref="IStateKeyResolver"/> to resolve the key.</param>
+    /// <param name="cancellationToken">The cancellation token.</param>
+    /// <returns>A <see cref="Task{TUpdate}"/> representing the awaited update.</returns>
+    public Task<TUpdate> Await(IStateKeyResolver keyResolver, CancellationToken cancellationToken = default);
 }

src/Telegrator/Core/Handlers/Building/IHandlerBuilder.cs

@@ -1,104 +1,85 @@
 using Telegram.Bot.Types;
-using Telegrator.Annotations.StateKeeping;
 using Telegrator.Core.Filters;
-using Telegrator.Core.StateKeeping;
+using Telegrator.Core.States;
 
-namespace Telegrator.Core.Handlers.Building
+namespace Telegrator.Core.Handlers.Building;
+
+/// <summary>
+/// Defines builder actions for configuring handler builders.
+/// </summary>
+public interface IHandlerBuilder
 {
     /// <summary>
-    /// Defines builder actions for configuring handler builders.
+    /// Sets the update validating action for the handler.
     /// </summary>
-    public interface IHandlerBuilder
-    {
-        /// <summary>
-        /// Sets the update validating action for the handler.
-        /// </summary>
-        /// <param name="validateAction">The <see cref="UpdateValidateAction"/> to use.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetUpdateValidating(UpdateValidateAction validateAction);
+    /// <param name="validateAction">The <see cref="UpdateValidateAction"/> to use.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetUpdateValidating(UpdateValidateAction validateAction);
 
-        /// <summary>
-        /// Sets the concurrency level for the handler.
-        /// </summary>
-        /// <param name="concurrency">The concurrency value.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetConcurreny(int concurrency);
+    /// <summary>
+    /// Sets the concurrency level for the handler.
+    /// </summary>
+    /// <param name="concurrency">The concurrency value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetConcurreny(int concurrency);
 
-        /// <summary>
-        /// Sets the priority for the handler.
-        /// </summary>
-        /// <param name="priority">The priority value.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetPriority(int priority);
+    /// <summary>
+    /// Sets the priority for the handler.
+    /// </summary>
+    /// <param name="priority">The priority value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetPriority(int priority);
 
-        /// <summary>
-        /// Sets both concurrency and priority for the handler.
-        /// </summary>
-        /// <param name="concurrency">The concurrency value.</param>
-        /// <param name="priority">The priority value.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetIndexer(int concurrency, int priority);
+    /// <summary>
+    /// Sets both concurrency and priority for the handler.
+    /// </summary>
+    /// <param name="concurrency">The concurrency value.</param>
+    /// <param name="priority">The priority value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetIndexer(int concurrency, int priority);
 
-        /// <summary>
-        /// Adds a filter to the handler.
-        /// </summary>
-        /// <param name="filter">The <see cref="IFilter{Update}"/> to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddFilter(IFilter<Update> filter);
+    /// <summary>
+    /// Adds a filter to the handler.
+    /// </summary>
+    /// <param name="filter">The <see cref="IFilter{Update}"/> to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddFilter(IFilter<Update> filter);
 
-        /// <summary>
-        /// Adds multiple filters to the handler.
-        /// </summary>
-        /// <param name="filters">The filters to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddFilters(params IFilter<Update>[] filters);
+    /// <summary>
+    /// Adds multiple filters to the handler.
+    /// </summary>
+    /// <param name="filters">The filters to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddFilters(params IFilter<Update>[] filters);
 
-        /// <summary>
-        /// Sets a state keeper for the handler using a specific state and key resolver.
-        /// </summary>
-        /// <typeparam name="TKey">The type of the key.</typeparam>
-        /// <typeparam name="TState">The type of the state.</typeparam>
-        /// <typeparam name="TKeeper">The type of the state keeper.</typeparam>
-        /// <param name="myState">The state value.</param>
-        /// <param name="keyResolver">The key resolver.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetStateKeeper<TKey, TState, TKeeper>(TState myState, IStateKeyResolver<TKey> keyResolver)
-            where TKey : notnull
-            where TState : IEquatable<TState>
-            where TKeeper : StateKeeperBase<TKey, TState>, new();
+    /// <summary>
+    /// Sets a state keeper for the handler using a specific state and key resolver.
+    /// </summary>
+    /// <typeparam name="TKey">The key resolver.</typeparam>
+    /// <typeparam name="TValue">The state value.</typeparam>
+    /// <param name="state">The state value.</param>
+    /// <returns>The builder instance.</returns>
+    public void SetState<TKey, TValue>(TValue? state)
+        where TKey : IStateKeyResolver, new()
+        where TValue : IEquatable<TValue>;
 
-        /// <summary>
-        /// Sets a state keeper for the handler using a special state and key resolver.
-        /// </summary>
-        /// <typeparam name="TKey">The type of the key.</typeparam>
-        /// <typeparam name="TState">The type of the state.</typeparam>
-        /// <typeparam name="TKeeper">The type of the state keeper.</typeparam>
-        /// <param name="specialState">The special state value.</param>
-        /// <param name="keyResolver">The key resolver.</param>
-        /// <returns>The builder instance.</returns>
-        public void SetStateKeeper<TKey, TState, TKeeper>(SpecialState specialState, IStateKeyResolver<TKey> keyResolver)
-            where TKey : notnull
-            where TState : IEquatable<TState>
-            where TKeeper : StateKeeperBase<TKey, TState>, new();
+    /// <summary>
+    /// Adds a targeted filter for a specific filter target type.
+    /// </summary>
+    /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
+    /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
+    /// <param name="filter">The filter to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddTargetedFilter<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, IFilter<TFilterTarget> filter)
+        where TFilterTarget : class;
 
-        /// <summary>
-        /// Adds a targeted filter for a specific filter target type.
-        /// </summary>
-        /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
-        /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
-        /// <param name="filter">The filter to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddTargetedFilter<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, IFilter<TFilterTarget> filter)
-            where TFilterTarget : class;
-
-        /// <summary>
-        /// Adds multiple targeted filters for a specific filter target type.
-        /// </summary>
-        /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
-        /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
-        /// <param name="filters">The filters to add.</param>
-        /// <returns>The builder instance.</returns>
-        public void AddTargetedFilters<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, params IFilter<TFilterTarget>[] filters)
-            where TFilterTarget : class;
-    }
+    /// <summary>
+    /// Adds multiple targeted filters for a specific filter target type.
+    /// </summary>
+    /// <typeparam name="TFilterTarget">The type of the filter target.</typeparam>
+    /// <param name="getFilterringTarget">Function to get the filter target from an update.</param>
+    /// <param name="filters">The filters to add.</param>
+    /// <returns>The builder instance.</returns>
+    public void AddTargetedFilters<TFilterTarget>(Func<Update, TFilterTarget?> getFilterringTarget, params IFilter<TFilterTarget>[] filters)
+        where TFilterTarget : class;
 }

src/Telegrator/Core/Handlers/Building/IRegularHandlerBuilder.cs

@@ -1,17 +1,16 @@
 using Telegrator.Handlers.Building;
 
-namespace Telegrator.Core.Handlers.Building
+namespace Telegrator.Core.Handlers.Building;
+
+/// <summary>
+/// Defines a builder for regular handler logic for a specific update type.
+/// </summary>
+/// <typeparam name="TUpdate">The type of update to handle.</typeparam>
+public interface IRegularHandlerBuilder<TUpdate> : IHandlerBuilder where TUpdate : class
 {
     /// <summary>
-    /// Defines a builder for regular handler logic for a specific update type.
+    /// Builds the handler logic using the specified execution delegate.
     /// </summary>
-    /// <typeparam name="TUpdate">The type of update to handle.</typeparam>
-    public interface IRegularHandlerBuilder<TUpdate> : IHandlerBuilder where TUpdate : class
-    {
-        /// <summary>
-        /// Builds the handler logic using the specified execution delegate.
-        /// </summary>
-        /// <param name="executeHandler">The delegate to execute the handler logic.</param>
-        public IHandlersCollection Build(AbstractHandlerAction<TUpdate> executeHandler);
-    }
+    /// <param name="executeHandler">The delegate to execute the handler logic.</param>
+    public IHandlersCollection Build(AbstractHandlerAction<TUpdate> executeHandler);
 }

src/Telegrator/Core/Handlers/Building/StateKeepFilter.cs

@@ -1,80 +0,0 @@
-using Telegram.Bot.Types;
-using Telegrator.Annotations.StateKeeping;
-using Telegrator.Core.Filters;
-using Telegrator.Core.StateKeeping;
-using Telegrator.Filters;
-
-namespace Telegrator.Core.Handlers.Building
-{
-    /// <summary>
-    /// Filter for state keeping logic, allowing filtering based on state and special state conditions.
-    /// </summary>
-    /// <typeparam name="TKey">The type of the key for state resolution.</typeparam>
-    /// <typeparam name="TState">The type of the state.</typeparam>
-    /// <typeparam name="TKeeper">The type of the state keeper.</typeparam>
-    public class StateKeepFilter<TKey, TState, TKeeper> : Filter<Update>
-        where TKey : notnull
-        where TState : IEquatable<TState>
-        where TKeeper : StateKeeperBase<TKey, TState>, new()
-    {
-        /// <summary>
-        /// Gets or sets the state keeper instance.
-        /// </summary>
-        public static TKeeper StateKeeper { get; internal set; } = null!;
-
-        /// <summary>
-        /// Gets the state value for this filter.
-        /// </summary>
-        public TState MyState { get; private set; }
-
-        /// <summary>
-        /// Gets the special state value for this filter.
-        /// </summary>
-        public SpecialState SpecialState { get; private set; }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="StateKeepFilter{TKey, TState, TKeeper}"/> class with a specific state.
-        /// </summary>
-        /// <param name="myState">The state value.</param>
-        /// <param name="keyResolver">The key resolver.</param>
-        public StateKeepFilter(TState myState, IStateKeyResolver<TKey> keyResolver)
-        {
-            StateKeeper ??= new TKeeper();
-            StateKeeper.KeyResolver = keyResolver;
-            MyState = myState;
-            SpecialState = SpecialState.None;
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="StateKeepFilter{TKey, TState, TKeeper}"/> class with a special state.
-        /// </summary>
-        /// <param name="specialState">The special state value.</param>
-        /// <param name="keyResolver">The key resolver.</param>
-        public StateKeepFilter(SpecialState specialState, IStateKeyResolver<TKey> keyResolver)
-        {
-            StateKeeper ??= new TKeeper();
-            StateKeeper.KeyResolver = keyResolver;
-            MyState = StateKeeper.DefaultState;
-            SpecialState = specialState;
-        }
-
-        /// <summary>
-        /// Determines whether the filter can pass for the given context based on state logic.
-        /// </summary>
-        /// <param name="context">The filter execution context.</param>
-        /// <returns>True if the filter passes; otherwise, false.</returns>
-        public override bool CanPass(FilterExecutionContext<Update> context)
-        {
-            if (SpecialState == SpecialState.AnyState)
-                return true;
-
-            if (!StateKeeper.TryGetState(context.Input, out TState? state))
-                return SpecialState == SpecialState.NoState;
-
-            if (state == null)
-                return false;
-
-            return MyState.Equals(state);
-        }
-    }
-}

src/Telegrator/Core/Handlers/Building/UpdateValidateFilter.cs

@@ -1,41 +1,40 @@
 using Telegram.Bot.Types;
 using Telegrator.Core.Filters;
 
-namespace Telegrator.Core.Handlers.Building
+namespace Telegrator.Core.Handlers.Building;
+
+/// <summary>
+/// Delegate for validating an update in a filter context.
+/// </summary>
+/// <param name="context">The filter execution context.</param>
+/// <returns>True if the update is valid; otherwise, false.</returns>
+public delegate bool UpdateValidateAction(FilterExecutionContext<Update> context);
+
+/// <summary>
+/// Filter that uses a delegate to validate updates.
+/// </summary>
+public class UpdateValidateFilter : IFilter<Update>
 {
     /// <summary>
-    /// Delegate for validating an update in a filter context.
+    /// Gets a value indicating whether this filter is collectable. Always false for this filter.
     /// </summary>
-    /// <param name="context">The filter execution context.</param>
-    /// <returns>True if the update is valid; otherwise, false.</returns>
-    public delegate bool UpdateValidateAction(FilterExecutionContext<Update> context);
+    public bool IsCollectible => false;
+    private readonly UpdateValidateAction UpdateValidateAction;
 
     /// <summary>
-    /// Filter that uses a delegate to validate updates.
+    /// Initializes a new instance of the <see cref="UpdateValidateFilter"/> class.
     /// </summary>
-    public class UpdateValidateFilter : IFilter<Update>
+    /// <param name="updateValidateAction">The validation delegate to use.</param>
+    public UpdateValidateFilter(UpdateValidateAction updateValidateAction)
     {
-        /// <summary>
-        /// Gets a value indicating whether this filter is collectable. Always false for this filter.
-        /// </summary>
-        public bool IsCollectible => false;
-        private readonly UpdateValidateAction UpdateValidateAction;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="UpdateValidateFilter"/> class.
-        /// </summary>
-        /// <param name="updateValidateAction">The validation delegate to use.</param>
-        public UpdateValidateFilter(UpdateValidateAction updateValidateAction)
-        {
-            UpdateValidateAction = updateValidateAction;
-        }
-
-        /// <summary>
-        /// Determines whether the filter can pass for the given context using the validation delegate.
-        /// </summary>
-        /// <param name="info">The filter execution context.</param>
-        /// <returns>True if the filter passes; otherwise, false.</returns>
-        public bool CanPass(FilterExecutionContext<Update> info)
-            => UpdateValidateAction.Invoke(info);
+        UpdateValidateAction = updateValidateAction;
     }
+
+    /// <summary>
+    /// Determines whether the filter can pass for the given context using the validation delegate.
+    /// </summary>
+    /// <param name="info">The filter execution context.</param>
+    /// <returns>True if the filter passes; otherwise, false.</returns>
+    public bool CanPass(FilterExecutionContext<Update> info)
+        => UpdateValidateAction.Invoke(info);
 }

src/Telegrator/Core/Handlers/EmptyHandlerContainer.cs

@@ -1,27 +1,30 @@
 using Telegram.Bot;
 using Telegram.Bot.Types;
 using Telegrator.Core.Filters;
+using Telegrator.Core.States;
 
-namespace Telegrator.Core.Handlers
+namespace Telegrator.Core.Handlers;
+
+/// <summary>
+/// Represents an empty handler container that throws <see cref="NotImplementedException"/> for all members.
+/// </summary>
+public class EmptyHandlerContainer : IHandlerContainer
 {
-    /// <summary>
-    /// Represents an empty handler container that throws <see cref="NotImplementedException"/> for all members.
-    /// </summary>
-    public class EmptyHandlerContainer : IHandlerContainer
-    {
-        /// <inheritdoc/>
-        public Update HandlingUpdate => throw new NotImplementedException();
+    /// <inheritdoc/>
+    public Update HandlingUpdate => throw new NotImplementedException();
 
-        /// <inheritdoc/>
-        public ITelegramBotClient Client => throw new NotImplementedException();
+    /// <inheritdoc/>
+    public ITelegramBotClient Client => throw new NotImplementedException();
 
-        /// <inheritdoc/>
-        public Dictionary<string, object> ExtraData => throw new NotImplementedException();
+    /// <inheritdoc/>
+    public Dictionary<string, object> ExtraData => throw new NotImplementedException();
 
-        /// <inheritdoc/>
-        public CompletedFiltersList CompletedFilters => throw new NotImplementedException();
+    /// <inheritdoc/>
+    public CompletedFiltersList CompletedFilters => throw new NotImplementedException();
 
-        /// <inheritdoc/>
-        public IAwaitingProvider AwaitingProvider => throw new NotImplementedException();
-    }
+    /// <inheritdoc/>
+    public IAwaitingProvider AwaitingProvider => throw new NotImplementedException();
+
+    /// <inheritdoc/>
+    public IStateStorage StateStorage => throw new NotImplementedException();
 }

src/Telegrator/Core/Handlers/HandlerLifetimeToken.cs

@@ -1,27 +1,26 @@
-namespace Telegrator.Core.Handlers
+namespace Telegrator.Core.Handlers;
+
+/// <summary>
+/// Represents a token that tracks the lifetime of a handler instance.
+/// </summary>
+public class HandlerLifetimeToken
 {
     /// <summary>
-    /// Represents a token that tracks the lifetime of a handler instance.
+    /// Event triggered when the handler's lifetime has ended.
     /// </summary>
-    public class HandlerLifetimeToken
+    public event Action<HandlerLifetimeToken>? OnLifetimeEnded;
+
+    /// <summary>
+    /// Gets a value indicating whether the handler's lifetime has ended.
+    /// </summary>
+    public bool IsEnded { get; private set; }
+
+    /// <summary>
+    /// Marks the handler's lifetime as ended and triggers the event.
+    /// </summary>
+    public void LifetimeEnded()
     {
-        /// <summary>
-        /// Event triggered when the handler's lifetime has ended.
-        /// </summary>
-        public event Action<HandlerLifetimeToken>? OnLifetimeEnded;
-
-        /// <summary>
-        /// Gets a value indicating whether the handler's lifetime has ended.
-        /// </summary>
-        public bool IsEnded { get; private set; }
-
-        /// <summary>
-        /// Marks the handler's lifetime as ended and triggers the event.
-        /// </summary>
-        public void LifetimeEnded()
-        {
-            IsEnded = true;
-            OnLifetimeEnded?.Invoke(this);
-        }
+        IsEnded = true;
+        OnLifetimeEnded?.Invoke(this);
     }
 }

src/Telegrator/Core/Handlers/IHandlerContainer.cs

@@ -1,38 +1,43 @@
 using Telegram.Bot;
 using Telegram.Bot.Types;
 using Telegrator.Core.Filters;
+using Telegrator.Core.States;
 
-namespace Telegrator.Core.Handlers
+namespace Telegrator.Core.Handlers;
+
+/// <summary>
+/// Interface for handler containers that provide context and resources for update handlers.
+/// Contains all necessary information and services that handlers need during execution.
+/// </summary>
+public interface IHandlerContainer
 {
     /// <summary>
-    /// Interface for handler containers that provide context and resources for update handlers.
-    /// Contains all necessary information and services that handlers need during execution.
+    /// Gets the <see cref="Update"/> being handled.
     /// </summary>
-    public interface IHandlerContainer
-    {
-        /// <summary>
-        /// Gets the <see cref="Update"/> being handled.
-        /// </summary>
-        public Update HandlingUpdate { get; }
+    public Update HandlingUpdate { get; }
 
-        /// <summary>
-        /// Gets the <see cref="ITelegramBotClient"/> used for this handler.
-        /// </summary>
-        public ITelegramBotClient Client { get; }
+    /// <summary>
+    /// Gets the <see cref="ITelegramBotClient"/> used for this handler.
+    /// </summary>
+    public ITelegramBotClient Client { get; }
 
-        /// <summary>
-        /// Gets the extra data associated with the handler execution.
-        /// </summary>
-        public Dictionary<string, object> ExtraData { get; }
+    /// <summary>
+    /// Gets the extra data associated with the handler execution.
+    /// </summary>
+    public Dictionary<string, object> ExtraData { get; }
 
-        /// <summary>
-        /// Gets the <see cref="CompletedFiltersList"/> for this handler.
-        /// </summary>
-        public CompletedFiltersList CompletedFilters { get; }
+    /// <summary>
+    /// Gets the <see cref="CompletedFiltersList"/> for this handler.
+    /// </summary>
+    public CompletedFiltersList CompletedFilters { get; }
 
-        /// <summary>
-        /// Gets the <see cref="IAwaitingProvider"/> for awaiting operations.
-        /// </summary>
-        public IAwaitingProvider AwaitingProvider { get; }
-    }
+    /// <summary>
+    /// Gets the <see cref="IAwaitingProvider"/> for awaiting operations.
+    /// </summary>
+    public IAwaitingProvider AwaitingProvider { get; }
+
+    /// <summary>
+    /// Gets the <see cref="IStateStorage"/> for state managment.
+    /// </summary>
+    public IStateStorage StateStorage { get; }
 }

src/Telegrator/Core/Handlers/IHandlerContainerFactory.cs

@@ -1,18 +1,17 @@
 using Telegrator.Core.Descriptors;
 
-namespace Telegrator.Core.Handlers
+namespace Telegrator.Core.Handlers;
+
+/// <summary>
+/// Factory interface for creating handler containers.
+/// Provides a way to create handler containers with specific providers and handler information.
+/// </summary>
+public interface IHandlerContainerFactory
 {
     /// <summary>
-    /// Factory interface for creating handler containers.
-    /// Provides a way to create handler containers with specific providers and handler information.
+    /// Creates a new <see cref="IHandlerContainer"/> for the specified awaiting provider and handler info.
     /// </summary>
-    public interface IHandlerContainerFactory
-    {
-        /// <summary>
-        /// Creates a new <see cref="IHandlerContainer"/> for the specified awaiting provider and handler info.
-        /// </summary>
-        /// <param name="handlerInfo">The <see cref="DescribedHandlerDescriptor"/> for the handler.</param>
-        /// <returns>A new <see cref="IHandlerContainer"/> instance.</returns>
-        public IHandlerContainer CreateContainer(DescribedHandlerDescriptor handlerInfo);
-    }
+    /// <param name="handlerInfo">The <see cref="DescribedHandlerDescriptor"/> for the handler.</param>
+    /// <returns>A new <see cref="IHandlerContainer"/> instance.</returns>
+    public IHandlerContainer CreateContainer(DescribedHandlerDescriptor handlerInfo);
 }