Apply community change from MessageChangeCommunity.

Author: levlam

td/telegram/ChatManager.cpp

@@ -8152,10 +8152,17 @@ void ChatManager::on_update_channel_linked_channel_id(ChannelId channel_id, Chan
 }
 
 void ChatManager::on_update_channel_linked_community_id(ChannelId channel_id, CommunityId linked_community_id) {
-  auto channel_full = get_channel_full_force(channel_id, true, "on_update_channel_linked_community_id");
-  if (channel_full != nullptr) {
-    on_update_channel_full_linked_community_id(channel_full, channel_id, linked_community_id);
-    update_channel_full(channel_full, channel_id, "on_update_channel_linked_community_id");
+  auto c = get_channel(channel_id);
+  if (c != nullptr && c->linked_community_id != linked_community_id) {
+    c->linked_community_id = linked_community_id;
+    c->need_save_to_database = true;
+    update_channel(c, channel_id);
+
+    auto channel_full = get_channel_full_force(channel_id, true, "on_update_channel_linked_community_id");
+    if (channel_full != nullptr) {
+      on_update_channel_full_linked_community_id(channel_full, channel_id, linked_community_id);
+      update_channel_full(channel_full, channel_id, "on_update_channel_linked_community_id");
+    }
   }
 }
 

td/telegram/MessageContent.cpp

@@ -13697,9 +13697,22 @@ void apply_updates_from_service_message_content(Td *td, const MessageContent *co
       return td->messages_manager_->get_message_from_server(
           get_message_content_replied_message_full_id(dialog_id, content), Promise<Unit>(),
           "apply_updates_from_service_message_content");
-    case MessageContentType::ChangeCommunity:
-      // TODO apply community change
-      return;
+    case MessageContentType::ChangeCommunity: {
+      auto community_id = static_cast<const MessageChangeCommunity *>(content)->community_id;
+      switch (dialog_id.get_type()) {
+        case DialogType::User:
+          if (td->user_manager_->is_user_bot(dialog_id.get_user_id())) {
+            td->user_manager_->on_update_user_linked_community_id(dialog_id.get_user_id(), community_id);
+          }
+          return;
+        case DialogType::Channel:
+          td->chat_manager_->on_update_channel_linked_community_id(dialog_id.get_channel_id(), community_id);
+          return;
+        default:
+          LOG(ERROR) << "Receive ChangeCommunity in " << dialog_id;
+          return;
+      }
+    }
     default:
       // nothing to do
       return;

td/telegram/UserManager.cpp

@@ -3771,6 +3771,12 @@ void UserManager::on_update_user_linked_community_id(UserId user_id, CommunityId
   if (u != nullptr) {
     on_update_user_linked_community_id(u, user_id, linked_community_id);
     update_user(u, user_id);
+
+    auto user_full = get_user_full_force(user_id, "on_update_user_linked_community_id");
+    if (user_full != nullptr) {
+      on_update_user_full_linked_community_id(user_full, linked_community_id);
+      update_user_full(user_full, user_id, "on_update_user_linked_community_id");
+    }
   }
 }