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Telegrator.Hosting/Configuration/ConfigureOptionsProxy.cs

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+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Options;
+
+namespace Telegrator.Hosting.Configuration
+{
+    /// <summary>
+    /// Abstract base class for configuring options from configuration sources.
+    /// Provides a proxy pattern for binding configuration to strongly-typed options classes.
+    /// </summary>
+    /// <typeparam name="TOptions">The type of options to configure.</typeparam>
+    public abstract class ConfigureOptionsProxy<TOptions> where TOptions : class
+    {
+        /// <summary>
+        /// Configures the options using the default configuration section.
+        /// </summary>
+        /// <param name="services">The service collection to configure.</param>
+        /// <param name="configuration">The configuration source.</param>
+        public void Configure(IServiceCollection services, IConfiguration configuration)
+            => Configure(services, Options.DefaultName, configuration, null);
+
+        /// <summary>
+        /// Configures the options using a named configuration section.
+        /// </summary>
+        /// <param name="services">The service collection to configure.</param>
+        /// <param name="name">The name of the configuration section.</param>
+        /// <param name="configuration">The configuration source.</param>
+        public void Configure(IServiceCollection services, string? name, IConfiguration configuration)
+            => Configure(services, name, configuration, null);
+
+        /// <summary>
+        /// Configures the options using a named configuration section with custom binder options.
+        /// </summary>
+        /// <param name="services">The service collection to configure.</param>
+        /// <param name="name">The name of the configuration section.</param>
+        /// <param name="configuration">The configuration source.</param>
+        /// <param name="configureBinder">Optional action to configure the binder options.</param>
+        public void Configure(IServiceCollection services, string? name, IConfiguration configuration, Action<BinderOptions>? configureBinder)
+        {
+            var namedConfigure = new NamedConfigureFromConfigurationOptions<ConfigureOptionsProxy<TOptions>>(name, configuration, configureBinder);
+            namedConfigure.Configure(name, this);
+
+            services.AddOptions();
+            services.AddSingleton(Options.Create(Realize()));
+        }
+
+        /// <summary>
+        /// Creates the actual options instance from the configuration.
+        /// </summary>
+        /// <returns>The configured options instance.</returns>
+        protected abstract TOptions Realize();
+    }
+}

Telegrator.Hosting/Configuration/TelegramBotClientOptionsProxy.cs

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+using Telegram.Bot;
+
+namespace Telegrator.Hosting.Configuration
+{
+    /// <summary>
+    /// Internal proxy class for configuring Telegram bot client options from configuration.
+    /// Extends ConfigureOptionsProxy to provide specific configuration for Telegram bot client options.
+    /// </summary>
+    internal class TelegramBotClientOptionsProxy : ConfigureOptionsProxy<TelegramBotClientOptions>
+    {
+        /// <summary>
+        /// Gets or sets the bot token.
+        /// </summary>
+        public string Token { get; set; } = string.Empty;
+        
+        /// <summary>
+        /// Gets or sets the base URL for the bot API.
+        /// </summary>
+        public string? BaseUrl { get; set; } = null;
+        
+        /// <summary>
+        /// Gets or sets whether to use the test environment.
+        /// </summary>
+        public bool UseTestEnvironment { get; set; } = false;
+        
+        /// <summary>
+        /// Gets or sets the retry threshold in seconds.
+        /// </summary>
+        public int RetryThreshold { get; set; } = 60;
+        
+        /// <summary>
+        /// Gets or sets the number of retry attempts.
+        /// </summary>
+        public int RetryCount { get; set; } = 3;
+
+        /// <summary>
+        /// Creates a TelegramBotClientOptions instance from the proxy configuration.
+        /// </summary>
+        /// <returns>The configured TelegramBotClientOptions instance.</returns>
+        protected override TelegramBotClientOptions Realize() => new TelegramBotClientOptions(Token, BaseUrl, UseTestEnvironment)
+        {
+            RetryCount = RetryCount,
+            RetryThreshold = RetryThreshold
+        };
+    }
+}