From c93cfe5df6c3b83ef925a70706debe1ce2f90c8b Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Sun, 31 Mar 2019 06:11:35 +0300
Subject: [PATCH] Allow to reply yet unreceived server messages.

GitOrigin-RevId: 0796acda7ab15c8f2a37404daabf42b6d634768a
---
 td/telegram/MessagesManager.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index 518cfc94..7786ecc2 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -15352,10 +15352,19 @@ MessageId MessagesManager::get_persistent_message_id(const Dialog *d, MessageId
 
 MessageId MessagesManager::get_reply_to_message_id(Dialog *d, MessageId message_id) {
   CHECK(d != nullptr);
+  if (!message_id.is_valid()) {
+    return MessageId();
+  }
   message_id = get_persistent_message_id(d, message_id);
   const Message *reply_to_message = get_message_force(d, message_id, "get_reply_to_message_id");
   if (reply_to_message == nullptr || message_id.is_yet_unsent() ||
       (message_id.is_local() && d->dialog_id.get_type() != DialogType::SecretChat)) {
+    if (message_id.is_server() && d->dialog_id.get_type() != DialogType::SecretChat &&
+        message_id.get() > d->last_new_message_id.get() && message_id.get() <= d->max_notification_message_id.get()) {
+      // allow to reply yer unreceived server message
+      return message_id;
+    }
+
     // TODO local replies to local messages can be allowed
     // TODO replies to yet unsent messages can be allowed with special handling of them on application restart
     return MessageId();