From 60e5854fcf4a3877146e80b9e5ad5c76d45d0be7 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Tue, 26 Feb 2019 03:41:49 +0300
Subject: [PATCH] Send updateChatOnlineMemberCount whenever dialog is opened.

GitOrigin-RevId: e85a9f04705da10e6b148d0d4c1b843241620c42
---
 td/telegram/MessagesManager.cpp | 20 ++++++++++++++++++++
 td/telegram/MessagesManager.h   |  3 +++
 2 files changed, 23 insertions(+)

diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index 7af01043f..f4df68ffc 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -12833,6 +12833,18 @@ void MessagesManager::open_dialog(Dialog *d) {
     default:
       UNREACHABLE();
   }
+
+  if (!td_->auth_manager_->is_bot()) {
+    auto online_count_it = dialog_online_member_counts_.find(d->dialog_id);
+    if (online_count_it != dialog_online_member_counts_.end()) {
+      auto &info = online_count_it->second;
+      CHECK(!info.is_update_sent);
+      if (Time::now() - info.updated_time < ONLINE_MEMBER_COUNT_CACHE_EXPIRE_TIME) {
+        info.is_update_sent = true;
+        send_update_chat_online_member_count(d->dialog_id, info.online_member_count);
+      }
+    }
+  }
 }
 
 void MessagesManager::close_dialog(Dialog *d) {
@@ -12883,6 +12895,14 @@ void MessagesManager::close_dialog(Dialog *d) {
     default:
       UNREACHABLE();
   }
+
+  if (!td_->auth_manager_->is_bot()) {
+    auto online_count_it = dialog_online_member_counts_.find(d->dialog_id);
+    if (online_count_it != dialog_online_member_counts_.end()) {
+      auto &info = online_count_it->second;
+      info.is_update_sent = false;
+    }
+  }
 }
 
 tl_object_ptr<td_api::ChatType> MessagesManager::get_chat_type_object(DialogId dialog_id) const {
diff --git a/td/telegram/MessagesManager.h b/td/telegram/MessagesManager.h
index 512f06f7c..b18bd262d 100644
--- a/td/telegram/MessagesManager.h
+++ b/td/telegram/MessagesManager.h
@@ -1240,6 +1240,9 @@ class MessagesManager : public Actor {
   static constexpr int32 USERNAME_CACHE_EXPIRE_TIME = 3 * 86400;
   static constexpr int32 USERNAME_CACHE_EXPIRE_TIME_SHORT = 900;
 
+  static constexpr int32 ONLINE_MEMBER_COUNT_CACHE_EXPIRE_TIME = 30 * 60;
+  static constexpr int32 ONLINE_MEMBER_COUNT_UPDATE_TIME = 5 * 60;
+
   static constexpr int32 MAX_RESEND_DELAY = 86400;  // seconds, some resonable limit
 
   static constexpr int32 MAX_PRELOADED_DIALOGS = 1000;