Add td_api::setMessageFactCheck.

td/generate/scheme/td_api.tl

@@ -1524,9 +1524,9 @@ inputMessageReplyToMessage chat_id:int53 message_id:int53 quote:inputTextQuote =
 inputMessageReplyToStory story_sender_chat_id:int53 story_id:int32 = InputMessageReplyTo;
 
 
-//@description Describes a fact check added to the message by an independent checker
-//@text Text of the fact check
-//@country_code A two-letter ISO 3166-1 alpha-2 country code of the country for which the fact check is shown
+//@description Describes a fact-check added to the message by an independent checker
+//@text Text of the fact-check
+//@country_code A two-letter ISO 3166-1 alpha-2 country code of the country for which the fact-check is shown
 factCheck text:formattedText country_code:string = FactCheck;
 
 
@@ -1562,7 +1562,7 @@ factCheck text:formattedText country_code:string = FactCheck;
 //@import_info Information about the initial message for messages created with importMessages; may be null if the message isn't imported
 //@interaction_info Information about interactions with the message; may be null if none
 //@unread_reactions Information about unread reactions added to the message
-//@fact_check Information about fact check added to the message; may be null if none
+//@fact_check Information about fact-check added to the message; may be null if none
 //@reply_to Information about the message or the story this message is replying to; may be null if none
 //@message_thread_id If non-zero, the identifier of the message thread the message belongs to; unique within the chat to which the message belongs
 //@saved_messages_topic_id Identifier of the Saved Messages topic for the message; 0 for messages not from Saved Messages
@@ -6231,7 +6231,7 @@ internalLinkTypeProxy server:string port:int32 type:ProxyType = InternalLinkType
 
 //@description The link is a link to a chat by its username. Call searchPublicChat with the given chat username to process the link
 //-If the chat is found, open its profile information screen or the chat itself.
-//-If draft text isn't empty and the chat is a private chat, then put the draft text in the input field
+//-If draft text isn't empty and the chat is a private chat with a regular user, then put the draft text in the input field
 //@chat_username Username of the chat
 //@draft_text Draft text for message to send in the chat
 internalLinkTypePublicChat chat_username:string draft_text:string = InternalLinkType;
@@ -6965,10 +6965,10 @@ updateMessageMentionRead chat_id:int53 message_id:int53 unread_mention_count:int
 //@unread_reaction_count The new number of messages with unread reactions left in the chat
 updateMessageUnreadReactions chat_id:int53 message_id:int53 unread_reactions:vector<unreadReaction> unread_reaction_count:int32 = Update;
 
-//@description A fact check added to a message was changed
+//@description A fact-check added to a message was changed
 //@chat_id Chat identifier
 //@message_id Message identifier
-//@fact_check The new fact check
+//@fact_check The new fact-check
 updateMessageFactCheck chat_id:int53 message_id:int53 fact_check:factCheck = Update;
 
 //@description A message with a live location was viewed. When the update is received, the application is supposed to update the live location
@@ -8337,6 +8337,12 @@ editInlineMessageReplyMarkup inline_message_id:string reply_markup:ReplyMarkup =
 //@scheduling_state The new message scheduling state; pass null to send the message immediately
 editMessageSchedulingState chat_id:int53 message_id:int53 scheduling_state:MessageSchedulingState = Ok;
 
+//@description Changes the fact-check of a message. Can be only used if getOption("can_edit_fact_check") == true
+//@chat_id The channel chat the message belongs to
+//@message_id Identifier of the message
+//@text New text of the fact-check; 0-1024 characters; pass null to remove it. Only Bold, Italic, and TextUrl entities are supported
+setMessageFactCheck chat_id:int53 message_id:int53 text:formattedText = Ok;
+
 
 //@description Sends a message on behalf of a business account; for bots only. Returns the message after it was sent
 //@business_connection_id Unique identifier of business connection on behalf of which to send the request

td/telegram/MessagesManager.cpp

@@ -1322,6 +1322,49 @@ class GetFactCheckQuery final : public Td::ResultHandler {
   }
 };
 
+class EditMessageFactCheckQuery final : public Td::ResultHandler {
+  Promise<Unit> promise_;
+  DialogId dialog_id_;
+
+ public:
+  explicit EditMessageFactCheckQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
+  }
+
+  void send(DialogId dialog_id, MessageId message_id, const FormattedText &text) {
+    dialog_id_ = dialog_id;
+    auto input_peer = td_->dialog_manager_->get_input_peer(dialog_id, AccessRights::Read);
+    CHECK(input_peer != nullptr);
+    auto server_message_id = message_id.get_server_message_id().get();
+    if (text.text.empty()) {
+      send_query(G()->net_query_creator().create(
+          telegram_api::messages_deleteFactCheck(std::move(input_peer), server_message_id)));
+    } else {
+      send_query(G()->net_query_creator().create(telegram_api::messages_editFactCheck(
+          std::move(input_peer), server_message_id,
+          get_input_text_with_entities(td_->user_manager_.get(), text, "messages_editFactCheck"))));
+    }
+  }
+
+  void on_result(BufferSlice packet) final {
+    static_assert(std::is_same<telegram_api::messages_deleteFactCheck::ReturnType,
+                               telegram_api::messages_editFactCheck::ReturnType>::value,
+                  "");
+    auto result_ptr = fetch_result<telegram_api::messages_editFactCheck>(packet);
+    if (result_ptr.is_error()) {
+      return on_error(result_ptr.move_as_error());
+    }
+
+    auto ptr = result_ptr.move_as_ok();
+    LOG(INFO) << "Receive result for EditMessageFactCheckQuery: " << to_string(ptr);
+    td_->updates_manager_->on_get_updates(std::move(ptr), std::move(promise_));
+  }
+
+  void on_error(Status status) final {
+    td_->dialog_manager_->on_get_dialog_error(dialog_id_, status, "EditMessageFactCheckQuery");
+    promise_.set_error(std::move(status));
+  }
+};
+
 class ReadMessagesContentsQuery final : public Td::ResultHandler {
   Promise<Unit> promise_;
 
@@ -25674,6 +25717,27 @@ void MessagesManager::edit_message_scheduling_state(
   }
 }
 
+void MessagesManager::set_message_fact_check(MessageFullId message_full_id,
+                                             td_api::object_ptr<td_api::formattedText> &&text,
+                                             Promise<Unit> &&promise) {
+  auto dialog_id = message_full_id.get_dialog_id();
+  TRY_RESULT_PROMISE(promise, d, check_dialog_access(dialog_id, false, AccessRights::Read, "set_message_fact_check"));
+
+  const Message *m = get_message_force(d, message_full_id.get_message_id(), "set_message_fact_check");
+  if (m == nullptr) {
+    return promise.set_error(Status::Error(400, "Message not found"));
+  }
+  if (!td_->dialog_manager_->is_broadcast_channel(dialog_id) || !m->message_id.is_valid() ||
+      !m->message_id.is_server()) {
+    return promise.set_error(Status::Error(400, "Message fact-check can't be changed for the message"));
+  }
+
+  TRY_RESULT_PROMISE(promise, fact_check_text,
+                     get_formatted_text(td_, dialog_id, std::move(text), false, true, true, false));
+
+  td_->create_handler<EditMessageFactCheckQuery>(std::move(promise))->send(dialog_id, m->message_id, fact_check_text);
+}
+
 bool MessagesManager::is_discussion_message(DialogId dialog_id, const Message *m) const {
   if (m == nullptr || m->forward_info == nullptr) {
     return false;

td/telegram/MessagesManager.h

@@ -507,6 +507,9 @@ class MessagesManager final : public Actor {
                                      td_api::object_ptr<td_api::MessageSchedulingState> &&scheduling_state,
                                      Promise<Unit> &&promise);
 
+  void set_message_fact_check(MessageFullId message_full_id, td_api::object_ptr<td_api::formattedText> &&text,
+                              Promise<Unit> &&promise);
+
   void get_dialog_filter_dialog_count(td_api::object_ptr<td_api::chatFolder> filter, Promise<int32> &&promise);
 
   void add_dialog_list_for_dialog_filter(DialogFilterId dialog_filter_id);

td/telegram/Td.cpp

@@ -5764,6 +5764,13 @@ void Td::on_request(uint64 id, td_api::editMessageSchedulingState &request) {
                                                    std::move(request.scheduling_state_), std::move(promise));
 }
 
+void Td::on_request(uint64 id, td_api::setMessageFactCheck &request) {
+  CHECK_IS_USER();
+  CREATE_OK_REQUEST_PROMISE();
+  messages_manager_->set_message_fact_check({DialogId(request.chat_id_), MessageId(request.message_id_)},
+                                            std::move(request.text_), std::move(promise));
+}
+
 void Td::on_request(uint64 id, td_api::sendBusinessMessage &request) {
   CHECK_IS_BOT();
   CREATE_REQUEST_PROMISE();

td/telegram/Td.h

@@ -893,6 +893,8 @@ class Td final : public Actor {
 
   void on_request(uint64 id, td_api::editMessageSchedulingState &request);
 
+  void on_request(uint64 id, td_api::setMessageFactCheck &request);
+
   void on_request(uint64 id, td_api::sendBusinessMessage &request);
 
   void on_request(uint64 id, td_api::sendBusinessMessageAlbum &request);

td/telegram/cli.cpp

@@ -5082,6 +5082,12 @@ class CliClient final : public Actor {
       get_args(args, chat_id, message_id, date);
       send_request(td_api::make_object<td_api::editMessageSchedulingState>(chat_id, message_id,
                                                                            as_message_scheduling_state(date)));
+    } else if (op == "smfc") {
+      ChatId chat_id;
+      MessageId message_id;
+      string message;
+      get_args(args, chat_id, message_id, message);
+      send_request(td_api::make_object<td_api::setMessageFactCheck>(chat_id, message_id, as_formatted_text(message)));
     } else {
       op_not_found_count++;
     }