Refactor BotApp to manage its own CancellationTokenSource

The constructor of the `BotApp` class in the `TelegramBot` namespace has been modified to remove the `cancellationTokenSource` parameter. Instead, a new `CancellationTokenSource` instance is created within the constructor.

In the `BotBuilder` class within the `TelegramBot.Builders` namespace, the instantiation of `CancellationTokenSource` has been removed, and the `BotApp` constructor is called without passing a `cancellationTokenSource` parameter.

These changes simplify the instantiation process of `BotApp` by encapsulating the creation of `CancellationTokenSource` within the class itself.

Author: bvdcode

Sources/TelegramBot/BotApp.cs

@@ -41,13 +41,12 @@ public class BotApp : IBot
         /// </summary>
         /// <param name="client">Telegram bot client.</param>
         /// <param name="serviceProvider">Service provider.</param>
-        /// <param name="cancellationTokenSource">Cancellation token source.</param>
-        public BotApp(TelegramBotClient client, ServiceProvider serviceProvider, CancellationTokenSource cancellationTokenSource)
+        public BotApp(TelegramBotClient client, ServiceProvider serviceProvider)
         {
             _client = client;
             _serviceProvider = serviceProvider;
             _controllerMethods = new List<MethodInfo>();
-            _cancellationTokenSource = cancellationTokenSource;
+            _cancellationTokenSource = new CancellationTokenSource();
             _logger = serviceProvider.GetRequiredService<ILogger<BotApp>>();
         }
 

Sources/TelegramBot/Builders/BotBuilder.cs

@@ -140,9 +140,8 @@ public IBot Build()
             {
                 Services.AddSingleton<IKeyValueProvider, InMemoryKeyValueProvider>();
             }
-            CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
             Services.AddSingleton<IHostApplicationLifetime, HostApplicationLifetime>(x => new HostApplicationLifetime());
-            return new BotApp(client, Services.BuildServiceProvider(), cancellationTokenSource);
+            return new BotApp(client, Services.BuildServiceProvider());
         }
     }
 }