From e23ecdf572d21ba486f886d60cb720636feed120 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Thu, 20 Jun 2019 20:34:08 +0300
Subject: [PATCH] Allow bots to restrict left chat members without trying to
 add them.

GitOrigin-RevId: b2884da3cdc524634b23d1d149bdb66bc6fa206d
---
 td/telegram/ContactsManager.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 218c8c00..678b31ed 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -4390,6 +4390,10 @@ void ContactsManager::change_channel_participant_status_impl(ChannelId channel_i
                                                              DialogParticipantStatus status,
                                                              DialogParticipantStatus old_status,
                                                              Promise<Unit> &&promise) {
+  if (td_->auth_manager_->is_bot() && status.is_restricted() && status.is_member() && !old_status.is_member()) {
+    // allow bots to restrict left chat members without trying to add them
+    status.set_is_member(false);
+  }
   if (old_status == status) {
     return promise.set_value(Unit());
   }