From 73f3696edab4cbf42af74060b2be66384c8668f5 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Tue, 6 Feb 2024 16:08:41 +0300
Subject: [PATCH] Send updateSavedMessagesTopic when last topic message
 changes.

---
 td/telegram/MessagesManager.cpp      |  3 +++
 td/telegram/SavedMessagesManager.cpp | 10 ++++++++++
 td/telegram/SavedMessagesManager.h   |  2 ++
 3 files changed, 15 insertions(+)

diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index 1be88d03c..c1d04c009 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -28489,6 +28489,9 @@ void MessagesManager::send_update_last_message_if_needed(const Dialog *d, const
   if (m->message_id == d->last_message_id) {
     send_update_chat_last_message_impl(d, source);
   }
+  if (d->dialog_id == td_->dialog_manager_->get_my_dialog_id() && m->saved_messages_topic_id.is_valid()) {
+    td_->saved_messages_manager_->on_topic_message_updated(m->saved_messages_topic_id, m->message_id);
+  }
 }
 
 void MessagesManager::send_update_chat_last_message(Dialog *d, const char *source) {
diff --git a/td/telegram/SavedMessagesManager.cpp b/td/telegram/SavedMessagesManager.cpp
index 4f57e1dc4..e05e4bfcd 100644
--- a/td/telegram/SavedMessagesManager.cpp
+++ b/td/telegram/SavedMessagesManager.cpp
@@ -353,6 +353,16 @@ void SavedMessagesManager::do_set_topic_last_message_id(SavedMessagesTopic *topi
   topic->is_changed_ = true;
 }
 
+void SavedMessagesManager::on_topic_message_updated(SavedMessagesTopicId saved_messages_topic_id,
+                                                    MessageId message_id) {
+  auto *topic = get_topic(saved_messages_topic_id);
+  if (topic == nullptr || topic->last_message_id_ != message_id) {
+    return;
+  }
+
+  send_update_saved_messages_topic(topic);
+}
+
 void SavedMessagesManager::on_topic_message_deleted(SavedMessagesTopicId saved_messages_topic_id,
                                                     MessageId message_id) {
   auto *topic = get_topic(saved_messages_topic_id);
diff --git a/td/telegram/SavedMessagesManager.h b/td/telegram/SavedMessagesManager.h
index fec567e03..e04b88e96 100644
--- a/td/telegram/SavedMessagesManager.h
+++ b/td/telegram/SavedMessagesManager.h
@@ -29,6 +29,8 @@ class SavedMessagesManager final : public Actor {
   void set_topic_last_message_id(SavedMessagesTopicId saved_messages_topic_id, MessageId last_message_id,
                                  int32 last_message_date);
 
+  void on_topic_message_updated(SavedMessagesTopicId saved_messages_topic_id, MessageId message_id);
+
   void on_topic_message_deleted(SavedMessagesTopicId saved_messages_topic_id, MessageId message_id);
 
   void get_pinned_saved_messages_topics(Promise<td_api::object_ptr<td_api::foundSavedMessagesTopics>> &&promise);