Secret Chats example

Examples/Program_SecretChats.cs

@@ -0,0 +1,93 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using TL;
+
+namespace WTelegramClientTest
+{
+	static class Program_SecretChats
+	{
+		static WTelegram.Client Client;
+		static WTelegram.SecretChats Secrets;
+		static InputEncryptedChat ActiveChat; // the secret chat currently selected
+		static readonly Dictionary<long, User> Users = new();
+		static readonly Dictionary<long, ChatBase> Chats = new();
+
+		// go to Project Properties > Debug > Environment variables and add at least these: api_id, api_hash, phone_number
+		static async Task Main()
+		{
+			WTelegram.Helpers.Log = (l, s) => System.Diagnostics.Debug.WriteLine(s);
+			Client = new WTelegram.Client(Environment.GetEnvironmentVariable);
+			Secrets = new WTelegram.SecretChats(Client, "Secrets.bin");
+			AppDomain.CurrentDomain.ProcessExit += (s, e) => { Secrets.Dispose(); Client.Dispose(); };
+			SelectActiveChat();
+
+			Client.OnUpdate += Client_OnUpdate;
+			var myself = await Client.LoginUserIfNeeded();
+			Users[myself.id] = myself;
+			Console.WriteLine($"We are logged-in as {myself}");
+				
+			var dialogs = await Client.Messages_GetAllDialogs(); // load the list of users/chats
+			dialogs.CollectUsersChats(Users, Chats);
+			Console.WriteLine(@"Available commands:
+/request <UserID>   Initiate Secret Chat with user
+/discard [delete]   Terminate active secret chat (and delete history)
+/select <ChatID>    Select another Secret Chat
+/read               Mark active discussion as read
+/users              List collected users and their IDs
+Type a command, or a message to send to the active secret chat:");
+			do
+			{
+				var line = Console.ReadLine();
+				if (line.StartsWith('/'))
+				{
+					if (line == "/discard delete") { await Secrets.Discard(ActiveChat, true); SelectActiveChat(); }
+					else if (line == "/discard") { await Secrets.Discard(ActiveChat, false); SelectActiveChat(); }
+					else if (line == "/read") await Client.Messages_ReadEncryptedHistory(ActiveChat, DateTime.UtcNow);
+					else if (line == "/users") foreach (var user in Users.Values) Console.WriteLine($"{user.id,-10} {user}");
+					else if (line.StartsWith("/select ")) SelectActiveChat(int.Parse(line[8..]));
+					else if (line.StartsWith("/request "))
+						if (Users.TryGetValue(long.Parse(line[9..]), out var user))
+							SelectActiveChat(await Secrets.Request(user));
+						else
+							Console.WriteLine("User not found");
+					else Console.WriteLine("Unrecognized command");
+				}
+				else if (ActiveChat == null) Console.WriteLine("No active secret chat");
+				else await Secrets.SendMessage(ActiveChat, new TL.Layer73.DecryptedMessage { message = line, random_id = WTelegram.Helpers.RandomLong() });
+			} while (true);
+		}
+
+		private static async Task Client_OnUpdate(IObject arg)
+		{
+			if (arg is not UpdatesBase updates) return;
+			updates.CollectUsersChats(Users, Chats);
+			foreach (var update in updates.UpdateList)
+				switch (update)
+				{
+					case UpdateEncryption ue: // Change in Secret Chat status
+						await Secrets.HandleUpdate(ue);
+						break;
+					case UpdateNewEncryptedMessage unem: // Encrypted message or service message:
+						if (unem.message.ChatId != ActiveChat) SelectActiveChat(unem.message.ChatId);
+						foreach (var msg in Secrets.DecryptMessage(unem.message))
+						{
+							if (msg.Action == null) Console.WriteLine($"{unem.message.ChatId}> {msg.Message}");
+							else Console.WriteLine($"{unem.message.ChatId}> Service Message {msg.Action.GetType().Name[22..]}");
+						}
+						break;
+					case UpdateEncryptedChatTyping:
+					case UpdateEncryptedMessagesRead:
+						//Console.WriteLine(update.GetType().Name);
+						break;
+				}
+		}
+
+		private static void SelectActiveChat(int newActiveChat = 0)
+		{
+			ActiveChat = Secrets.Peers.FirstOrDefault(sc => newActiveChat == 0 || sc.chat_id == newActiveChat);
+			Console.WriteLine("Active secret chat ID: " + ActiveChat?.chat_id);
+		}
+	}
+}

src/TL.Helpers.cs

@@ -384,6 +384,8 @@ namespace TL
 		}, pts = pts, pts_count = pts_count
 	} }; }
 
+	partial class InputEncryptedChat { public static implicit operator int(InputEncryptedChat chat) => chat.chat_id; }
+
 	partial class EncryptedFile
 	{
 		public static implicit operator InputEncryptedFile(EncryptedFile file) => file == null ? null : new InputEncryptedFile { id = file.id, access_hash = file.access_hash };

src/TL.Schema.cs

@@ -5002,7 +5002,7 @@ namespace TL
 
 	/// <summary>Creates an encrypted chat.		<para>See <a href="https://corefork.telegram.org/constructor/inputEncryptedChat"/></para></summary>
 	[TLDef(0xF141B5E1)]
-	public class InputEncryptedChat : IObject
+	public partial class InputEncryptedChat : IObject
 	{
 		/// <summary>Chat ID</summary>
 		public int chat_id;