Add leaveGroupCall method.

td/generate/scheme/td_api.tl

@@ -4293,6 +4293,9 @@ sendCallDebugInformation call_id:int32 debug_information:string = Ok;
 //@description Creates a group call in a chat. Available only for supergroups; requires can_manage_calls rights @chat_id Chat identifier
 createChatGroupCall chat_id:int53 = GroupCallId;
 
+//@description Leaves a group call @group_call_id Group call identifier @source Caller source identifier
+leaveGroupCall group_call_id:string source:int32 = Ok;
+
 //@description Discards a group call. Requires can_manage_calls rights in the corresponding chat @group_call_id Group call identifier
 discardGroupCall group_call_id:string = Ok;
 

td/telegram/InputGroupCallId.cpp

@@ -24,7 +24,7 @@ Result<InputGroupCallId> InputGroupCallId::from_group_call_id(const string &grou
   auto r_group_call_id = to_integer_safe<int64>(splitted.first);
   auto r_access_hash = to_integer_safe<int64>(splitted.second);
   if (r_group_call_id.is_error() || r_access_hash.is_error()) {
-    return Status::Error("Invalid group call identifier specified");
+    return Status::Error(400, "Invalid group call identifier specified");
   }
 
   return InputGroupCallId{r_group_call_id.ok(), r_access_hash.ok()};

td/telegram/Td.cpp

@@ -6041,6 +6041,14 @@ void Td::on_request(uint64 id, const td_api::createChatGroupCall &request) {
   contacts_manager_->create_channel_group_call(DialogId(request.chat_id_), std::move(query_promise));
 }
 
+void Td::on_request(uint64 id, const td_api::leaveGroupCall &request) {
+  CHECK_IS_USER();
+  CREATE_OK_REQUEST_PROMISE();
+  TRY_RESULT_PROMISE(promise, group_call_id, InputGroupCallId::from_group_call_id(request.group_call_id_));
+
+  group_call_manager_->leave_group_call(group_call_id, request.source_, std::move(promise));
+}
+
 void Td::on_request(uint64 id, const td_api::discardGroupCall &request) {
   CHECK_IS_USER();
   CREATE_OK_REQUEST_PROMISE();

td/telegram/Td.h

@@ -694,6 +694,8 @@ class Td final : public NetQueryCallback {
 
   void on_request(uint64 id, const td_api::createChatGroupCall &request);
 
+  void on_request(uint64 id, const td_api::leaveGroupCall &request);
+
   void on_request(uint64 id, const td_api::discardGroupCall &request);
 
   void on_request(uint64 id, const td_api::upgradeBasicGroupChatToSupergroupChat &request);

td/telegram/cli.cpp

@@ -2836,6 +2836,8 @@ class CliClient final : public Actor {
       send_request(td_api::make_object<td_api::sendCallDebugInformation>(as_call_id(args), "{}"));
     } else if (op == "ccgc") {
       send_request(td_api::make_object<td_api::createChatGroupCall>(as_chat_id(args)));
+    } else if (op == "lgc") {
+      send_request(td_api::make_object<td_api::leaveGroupCall>(args, 123));
     } else if (op == "dgc") {
       send_request(td_api::make_object<td_api::discardGroupCall>(args));
     } else if (op == "gcil") {