IPeerInfo, IsActive and Dialogs helpers

.github/ci.yml

@@ -2,7 +2,7 @@ pr: none
 trigger:
 - master
 
-name: 1.4.1-ci.$(Rev:r)
+name: 1.4.2-ci.$(Rev:r)
 
 pool:
   vmImage: ubuntu-latest

EXAMPLES.md

@@ -22,8 +22,8 @@ await client.SendMessageAsync(resolved.users[resolved.peer.ID], "Hello!");
 ```csharp
 using var client = new WTelegram.Client(Environment.GetEnvironmentVariable);
 await client.LoginUserIfNeeded();
-var imported = await client.Contacts_ImportContacts(new[] { new InputPhoneContact { phone = "+PHONENUMBER" } });
+var contacts = await client.Contacts_ImportContacts(new[] { new InputPhoneContact { phone = "+PHONENUMBER" } });
-await client.SendMessageAsync(imported.users[imported.imported[0].user_id], "Hello!");
+await client.SendMessageAsync(contacts.users[contacts.imported[0].user_id], "Hello!");
 ```
 *Note: To prevent spam, Telegram may restrict your ability to add new phone numbers.*
 
@@ -33,7 +33,8 @@ using var client = new WTelegram.Client(Environment.GetEnvironmentVariable);
 await client.LoginUserIfNeeded();
 var chats = await client.Messages_GetAllChats(null);
 foreach (var (id, chat) in chats.chats)
-    Console.WriteLine($"{id} : {chat}");
+    if (chat.IsActive)
+        Console.WriteLine($"{id} : {chat}");
 Console.Write("Choose a chat ID to send a message to: ");
 long chatId = long.Parse(Console.ReadLine());
 await client.SendMessageAsync(chats.chats[chatId], "Hello, World");
@@ -72,16 +73,15 @@ if (dialogsBase is Messages_Dialogs dialogs)
     while (dialogs.dialogs.Length != 0)
     {
         foreach (var dialog in dialogs.dialogs)
-            if (dialog is Dialog { peer: var peer } || (dialog is DialogFolder dialogFolder && (peer = dialogFolder.peer) != null))
+            switch (dialogs.GetUserOrChat(dialog))
-                switch (peer)
+            {
-                {
+                case UserBase user when user.IsActive: Console.WriteLine("User " + user); break;
-                    case PeerUser: Console.WriteLine("User " + dialogs.users[peer.ID]); break;
+                case ChatBase chat when chat.IsActive: Console.WriteLine(chat); break;
-                    case PeerChannel or PeerChat: Console.WriteLine(dialogs.chats[peer.ID]); break;
+            }
-                }
+        var lastDialog = dialogs.dialogs[^1];
-        var lastDialog = (Dialog)dialogs.dialogs[^1];
+        var lastMsg = dialogs.messages.LastOrDefault(m => m.Peer.ID == lastDialog.Peer.ID && m.ID == lastDialog.TopMessage);
-        var lastMsg = dialogs.messages.LastOrDefault(m => m.Peer.ID == lastDialog.peer.ID && m.ID == lastDialog.top_message);
+        var offsetPeer = dialogs.GetUserOrChat(lastDialog).ToInputPeer();
-        InputPeer offsetPeer = lastDialog.peer is PeerUser pu ? dialogs.users[pu.ID] : dialogs.chats[lastDialog.peer.ID];
+        dialogs = (Messages_Dialogs)await client.Messages_GetDialogs(lastMsg?.Date ?? default, lastDialog.TopMessage, offsetPeer, 500, 0);
-        dialogs = (Messages_Dialogs)await client.Messages_GetDialogs(lastMsg?.Date ?? default, lastDialog.top_message, offsetPeer, 500, 0);
     }
 ```
 

Examples/Program_ListenUpdates.cs

@@ -26,10 +26,10 @@ namespace WTelegramClientTest
 				{
 					foreach (var (id, user) in dialogs.users) users[id] = user;
 					foreach (var (id, chat) in dialogs.chats) chats[id] = chat;
-					var lastDialog = (Dialog)dialogs.dialogs[^1];
+					var lastDialog = dialogs.dialogs[^1];
-					var lastMsg = dialogs.messages.LastOrDefault(m => m.Peer.ID == lastDialog.peer.ID && m.ID == lastDialog.top_message);
+					var lastMsg = dialogs.messages.LastOrDefault(m => m.Peer.ID == lastDialog.Peer.ID && m.ID == lastDialog.TopMessage);
-					InputPeer offsetPeer = lastDialog.peer is PeerUser pu ? dialogs.users[pu.ID] : dialogs.chats[lastDialog.peer.ID];
+					var offsetPeer = dialogs.GetUserOrChat(lastDialog).ToInputPeer();
-					dialogs = (Messages_Dialogs)await client.Messages_GetDialogs(lastMsg?.Date ?? default, lastDialog.top_message, offsetPeer, 500, 0);
+					dialogs = (Messages_Dialogs)await client.Messages_GetDialogs(lastMsg?.Date ?? default, lastDialog.TopMessage, offsetPeer, 500, 0);
 				}
 			Console.ReadKey();
 			await client.Ping(42); // dummy API call

src/Helpers.TL.cs

@@ -9,45 +9,56 @@ namespace TL
 	partial class InputPeer { public static InputPeerSelf Self => new(); }
 	partial class InputUser { public static InputUserSelf Self => new(); }
 
-	partial class ChatBase
+	public interface IPeerInfo {
+		long ID { get; }
+		bool IsActive { get; }
+		InputPeer ToInputPeer();
+	}
+
+	partial class ChatBase : IPeerInfo
 	{
 		public abstract long ID { get; }
 		public abstract string Title { get; }
+		public abstract bool IsActive { get; }
 		/// <summary>returns true if you're banned of any of these rights</summary>
 		public abstract bool IsBanned(ChatBannedRights.Flags flags = 0);
-		protected abstract InputPeer ToInputPeer();
+		public abstract InputPeer ToInputPeer();
 		public static implicit operator InputPeer(ChatBase chat) => chat.ToInputPeer();
 	}
 	partial class ChatEmpty
 	{
 		public override long ID => id;
 		public override string Title => null;
+		public override bool IsActive => false;
 		public override bool IsBanned(ChatBannedRights.Flags flags = 0) => true;
-		protected override InputPeer ToInputPeer() => null;
+		public override InputPeer ToInputPeer() => null;
 		public override string ToString() => $"ChatEmpty {id}";
 	}
 	partial class Chat
 	{
 		public override long ID => id;
 		public override string Title => title;
+		public override bool IsActive => (flags & (Flags.kicked | Flags.left | Flags.deactivated)) == 0;
 		public override bool IsBanned(ChatBannedRights.Flags flags = 0) => ((default_banned_rights?.flags ?? 0) & flags) != 0;
-		protected override InputPeer ToInputPeer() => new InputPeerChat { chat_id = id };
+		public override InputPeer ToInputPeer() => new InputPeerChat { chat_id = id };
 		public override string ToString() => $"Chat \"{title}\"";
 	}
 	partial class ChatForbidden
 	{
 		public override long ID => id;
 		public override string Title => title;
+		public override bool IsActive => false;
 		public override bool IsBanned(ChatBannedRights.Flags flags = 0) => true;
-		protected override InputPeer ToInputPeer() => new InputPeerChat { chat_id = id };
+		public override InputPeer ToInputPeer() => new InputPeerChat { chat_id = id };
 		public override string ToString() => $"ChatForbidden {id} \"{title}\"";
 	}
 	partial class Channel
 	{
 		public override long ID => id;
 		public override string Title => title;
+		public override bool IsActive => (flags & Flags.left) == 0;
 		public override bool IsBanned(ChatBannedRights.Flags flags = 0) => ((banned_rights?.flags ?? 0) & flags) != 0 || ((default_banned_rights?.flags ?? 0) & flags) != 0;
-		protected override InputPeer ToInputPeer() => new InputPeerChannel { channel_id = id, access_hash = access_hash };
+		public override InputPeer ToInputPeer() => new InputPeerChannel { channel_id = id, access_hash = access_hash };
 		public static implicit operator InputChannel(Channel channel) => new() { channel_id = channel.id, access_hash = channel.access_hash };
 		public override string ToString() =>
 			(flags.HasFlag(Flags.broadcast) ? "Channel " : "Group ") + (username != null ? '@' + username : $"\"{title}\"");
@@ -56,15 +67,17 @@ namespace TL
 	{
 		public override long ID => id;
 		public override string Title => title;
+		public override bool IsActive => false;
 		public override bool IsBanned(ChatBannedRights.Flags flags = 0) => true;
-		protected override InputPeer ToInputPeer() => new InputPeerChannel { channel_id = id, access_hash = access_hash };
+		public override InputPeer ToInputPeer() => new InputPeerChannel { channel_id = id, access_hash = access_hash };
 		public override string ToString() => $"ChannelForbidden {id} \"{title}\"";
 	}
 
-	partial class UserBase
+	partial class UserBase : IPeerInfo
 	{
 		public abstract long ID { get; }
-		protected abstract InputPeer ToInputPeer();
+		public abstract bool IsActive { get; }
+		public abstract InputPeer ToInputPeer();
 		protected abstract InputUserBase ToInputUser();
 		public static implicit operator InputPeer(UserBase user) => user.ToInputPeer();
 		public static implicit operator InputUserBase(UserBase user) => user.ToInputUser();
@@ -72,15 +85,17 @@ namespace TL
 	partial class UserEmpty
 	{
 		public override long ID => id;
+		public override bool IsActive => false;
 		public override string ToString() => null;
-		protected override InputPeer ToInputPeer() => null;
+		public override InputPeer ToInputPeer() => null;
 		protected override InputUserBase ToInputUser() => null;
 	}
 	partial class User
 	{
 		public override long ID => id;
+		public override bool IsActive => (flags & Flags.deleted) == 0;
 		public override string ToString() => username != null ? '@' + username : last_name == null ? first_name : $"{first_name} {last_name}";
-		protected override InputPeer ToInputPeer() => new InputPeerUser { user_id = id, access_hash = access_hash };
+		public override InputPeer ToInputPeer() => new InputPeerUser { user_id = id, access_hash = access_hash };
 		protected override InputUserBase ToInputUser() => new InputUser { user_id = id, access_hash = access_hash };
 	}
 
@@ -253,6 +268,36 @@ namespace TL
 	partial class PeerChat { public override long ID => chat_id; public override string ToString() => "chat " + chat_id; }
 	partial class PeerChannel { public override long ID => channel_id; public override string ToString() => "channel " + channel_id; }
 
+	partial class DialogBase
+	{
+		public abstract Peer Peer { get; }
+		public abstract int TopMessage { get; }
+	}
+	partial class Dialog
+	{
+		public override Peer Peer => peer;
+		public override int TopMessage => top_message;
+	}
+	partial class DialogFolder
+	{
+		public override Peer Peer => peer;
+		public override int TopMessage => top_message;
+	}
+
+	partial class Messages_Dialogs
+	{
+		/// <summary>Find the matching User/Chat object for a dialog</summary>
+		/// <param name="dialog">The dialog which peer we want details on</param>
+		/// <returns>a UserBase or ChatBase derived instance</returns>
+		public IPeerInfo GetUserOrChat(DialogBase dialog) => dialog.Peer switch
+		{
+			PeerUser pu => users[pu.user_id],
+			PeerChat pc => chats[pc.chat_id],
+			PeerChannel pch => chats[pch.channel_id],
+			_ => null,
+		};
+	}
+
 	partial class JsonObjectValue { public override string ToString() => $"{HttpUtility.JavaScriptStringEncode(key, true)}:{value}"; }
 	partial class JsonNull { public override string ToString() => "null"; }
 	partial class JsonBool { public override string ToString() => value ? "true" : "false"; }