Reload viewers of replied stories.

td/telegram/MessagesManager.cpp

@@ -34987,6 +34987,16 @@ MessagesManager::Message *MessagesManager::add_message_to_dialog(Dialog *d, uniq
     on_dialog_updated(dialog_id, "update_has_contact_registered_message");
   }
 
+  if (m->sender_user_id.is_valid()) {
+    auto story_full_id = get_message_content_story_full_id(td_, m->content.get());
+    if (story_full_id.is_valid()) {
+      td_->story_manager_->on_story_replied(story_full_id, m->sender_user_id);
+    }
+    if (m->reply_to_story_full_id.is_valid()) {
+      td_->story_manager_->on_story_replied(m->reply_to_story_full_id, m->sender_user_id);
+    }
+  }
+
   reget_message_from_server_if_needed(dialog_id, m);
 
   add_message_file_sources(dialog_id, m);

td/telegram/StoryInteractionInfo.cpp

@@ -9,6 +9,7 @@
 #include "td/telegram/ContactsManager.h"
 #include "td/telegram/Td.h"
 
+#include "td/utils/algorithm.h"
 #include "td/utils/logging.h"
 
 namespace td {
@@ -43,6 +44,10 @@ void StoryInteractionInfo::set_recent_viewer_user_ids(vector<UserId> &&user_ids)
   recent_viewer_user_ids_ = std::move(user_ids);
 }
 
+bool StoryInteractionInfo::definitely_has_no_user(UserId user_id) const {
+  return !is_empty() && view_count_ <= MAX_RECENT_VIEWERS && !contains(recent_viewer_user_ids_, user_id);
+}
+
 td_api::object_ptr<td_api::storyInteractionInfo> StoryInteractionInfo::get_story_interaction_info_object(Td *td) const {
   if (is_empty()) {
     return nullptr;

td/telegram/StoryInteractionInfo.h

@@ -48,6 +48,8 @@ class StoryInteractionInfo {
     return view_count_;
   }
 
+  bool definitely_has_no_user(UserId user_id) const;
+
   void set_recent_viewer_user_ids(vector<UserId> &&user_ids);
 
   td_api::object_ptr<td_api::storyInteractionInfo> get_story_interaction_info_object(Td *td) const;

td/telegram/StoryManager.cpp

@@ -1322,6 +1322,21 @@ void StoryManager::view_story_message(StoryFullId story_full_id) {
   }
 }
 
+void StoryManager::on_story_replied(StoryFullId story_full_id, UserId replier_user_id) {
+  if (!replier_user_id.is_valid() || replier_user_id == td_->contacts_manager_->get_my_id()) {
+    return;
+  }
+  const Story *story = get_story(story_full_id);
+  if (story == nullptr || !story_full_id.get_story_id().is_server() || !is_story_owned(story_full_id.get_dialog_id())) {
+    return;
+  }
+
+  if (story->content_ != nullptr && is_active_story(story) &&
+      story->interaction_info_.definitely_has_no_user(replier_user_id)) {
+    reload_story(story_full_id, Promise<Unit>());
+  }
+}
+
 void StoryManager::schedule_interaction_info_update() {
   if (interaction_info_update_timeout_.has_timeout()) {
     return;

td/telegram/StoryManager.h

@@ -155,6 +155,8 @@ class StoryManager final : public Actor {
 
   void view_story_message(StoryFullId story_full_id);
 
+  void on_story_replied(StoryFullId story_full_id, UserId replier_user_id);
+
   void get_story_viewers(StoryId story_id, const td_api::messageViewer *offset, int32 limit,
                          Promise<td_api::object_ptr<td_api::messageViewers>> &&promise);