Add toggleForumTopicIsClosed.

td/generate/scheme/td_api.tl

@@ -5307,6 +5307,12 @@ createForumTopic chat_id:int53 title:string icon:forumTopicIcon = ForumTopicInfo
 //@icon_custom_emoji_id Identifier of the new custom emoji for topic icon. Telegram Premium users can use any custom emoji, other users can use only a custom emoji returned by getForumTopicDefaultIcons
 editForumTopic chat_id:int53 message_thread_id:int53 title:string icon_custom_emoji_id:int64 = Ok;
 
+//@description Toggles is_closed state of a topic in a forum supergroup chat; requires can_manage_topics administrator rights in the supergroup
+//@chat_id Identifier of the chat
+//@message_thread_id Message thread identifier of the forum topic
+//@is_closed Pass true to close the topic; pass false to open it
+toggleForumTopicIsClosed chat_id:int53 message_thread_id:int53 is_closed:Bool = Ok;
+
 
 //@description Returns information about a emoji reaction. Returns a 404 error if the reaction is not found @emoji Text representation of the reaction
 getEmojiReaction emoji:string = EmojiReaction;

td/telegram/ForumTopicManager.cpp

@@ -131,6 +131,21 @@ class EditForumTopicQuery final : public Td::ResultHandler {
         {{channel_id}}));
   }
 
+  void send(ChannelId channel_id, MessageId top_thread_message_id, bool is_closed) {
+    channel_id_ = channel_id;
+    top_thread_message_id_ = top_thread_message_id;
+
+    auto input_channel = td_->contacts_manager_->get_input_channel(channel_id);
+    CHECK(input_channel != nullptr);
+
+    int32 flags = telegram_api::channels_editForumTopic::CLOSED_MASK;
+    send_query(G()->net_query_creator().create(
+        telegram_api::channels_editForumTopic(flags, std::move(input_channel),
+                                              top_thread_message_id.get_server_message_id().get(), string(), 0,
+                                              is_closed),
+        {{channel_id}}));
+  }
+
   void on_result(BufferSlice packet) final {
     auto result_ptr = fetch_result<telegram_api::channels_editForumTopic>(packet);
     if (result_ptr.is_error()) {
@@ -233,6 +248,22 @@ void ForumTopicManager::edit_forum_topic(DialogId dialog_id, MessageId top_threa
       ->send(channel_id, top_thread_message_id, new_title, icon_custom_emoji_id);
 }
 
+void ForumTopicManager::toggle_forum_topic_is_closed(DialogId dialog_id, MessageId top_thread_message_id,
+                                                     bool is_closed, Promise<Unit> &&promise) {
+  TRY_STATUS_PROMISE(promise, is_forum(dialog_id));
+  auto channel_id = dialog_id.get_channel_id();
+
+  if (!top_thread_message_id.is_valid() || !top_thread_message_id.is_server()) {
+    return promise.set_error(Status::Error(400, "Invalid message thread identifier specified"));
+  }
+
+  if (!td_->contacts_manager_->get_channel_permissions(channel_id).can_edit_topics()) {
+    return promise.set_error(Status::Error(400, "Not enough rights to edit a topic"));
+  }
+
+  td_->create_handler<EditForumTopicQuery>(std::move(promise))->send(channel_id, top_thread_message_id, is_closed);
+}
+
 Status ForumTopicManager::is_forum(DialogId dialog_id) {
   if (!td_->messages_manager_->have_dialog_force(dialog_id, "ForumTopicManager::is_forum")) {
     return Status::Error(400, "Chat not found");

td/telegram/ForumTopicManager.h

@@ -39,6 +39,9 @@ class ForumTopicManager final : public Actor {
   void edit_forum_topic(DialogId dialog_id, MessageId top_thread_message_id, string &&title,
                         CustomEmojiId icon_custom_emoji_id, Promise<Unit> &&promise);
 
+  void toggle_forum_topic_is_closed(DialogId dialog_id, MessageId top_thread_message_id, bool is_closed,
+                                    Promise<Unit> &&promise);
+
  private:
   static constexpr size_t MAX_FORUM_TOPIC_TITLE_LENGTH = 128;  // server side limit for forum topic title
 

td/telegram/Td.cpp

@@ -5532,6 +5532,13 @@ void Td::on_request(uint64 id, td_api::editForumTopic &request) {
                                          std::move(promise));
 }
 
+void Td::on_request(uint64 id, const td_api::toggleForumTopicIsClosed &request) {
+  CHECK_IS_USER();
+  CREATE_OK_REQUEST_PROMISE();
+  forum_topic_manager_->toggle_forum_topic_is_closed(DialogId(request.chat_id_), MessageId(request.message_thread_id_),
+                                                     request.is_closed_, std::move(promise));
+}
+
 void Td::on_request(uint64 id, td_api::setGameScore &request) {
   CHECK_IS_BOT();
   CREATE_REQUEST_PROMISE();

td/telegram/Td.h

@@ -736,6 +736,8 @@ class Td final : public Actor {
 
   void on_request(uint64 id, td_api::editForumTopic &request);
 
+  void on_request(uint64 id, const td_api::toggleForumTopicIsClosed &request);
+
   void on_request(uint64 id, td_api::setGameScore &request);
 
   void on_request(uint64 id, td_api::setInlineGameScore &request);

td/telegram/cli.cpp

@@ -3871,6 +3871,12 @@ class CliClient final : public Actor {
       get_args(args, chat_id, message_thread_id, title, icon_custom_emoji_id);
       send_request(
           td_api::make_object<td_api::editForumTopic>(chat_id, message_thread_id, title, icon_custom_emoji_id));
+    } else if (op == "tftic") {
+      ChatId chat_id;
+      MessageThreadId message_thread_id;
+      bool is_closed;
+      get_args(args, chat_id, message_thread_id, is_closed);
+      send_request(td_api::make_object<td_api::toggleForumTopicIsClosed>(chat_id, message_thread_id, is_closed));
     } else if (op == "gallm") {
       send_request(td_api::make_object<td_api::getActiveLiveLocationMessages>());
     } else if (op == "sbsm") {