From 7c275da3f8779232222853da73e70b247bdbae32 Mon Sep 17 00:00:00 2001
From: Alexander Zinchuk <alx.zinchuk@gmail.com>
Date: Mon, 19 Jul 2021 01:56:33 +0300
Subject: [PATCH] Message: Fix delete and edit actions for admins (#1293)

---
 src/modules/selectors/messages.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/modules/selectors/messages.ts b/src/modules/selectors/messages.ts
index 85e2ee26..5efac836 100644
--- a/src/modules/selectors/messages.ts
+++ b/src/modules/selectors/messages.ts
@@ -356,8 +356,12 @@ export function selectAllowedMessageActions(global: GlobalState, message: ApiMes
   const isOwn = isOwnMessage(message);
   const isAction = isActionMessage(message);
   const { content } = message;
+  const canEditMessagesIndefinitely = isChatWithSelf
+    || (isSuperGroup && getHasAdminRight(chat, 'pinMessages'))
+    || (isChannel && getHasAdminRight(chat, 'editMessages'));
   const isMessageEditable = (
-    (isChatWithSelf || Date.now() + serverTimeOffset * 1000 - message.date * 1000 < MESSAGE_EDIT_ALLOWED_TIME_MS)
+    (canEditMessagesIndefinitely
+    || Date.now() + serverTimeOffset * 1000 - message.date * 1000 < MESSAGE_EDIT_ALLOWED_TIME_MS)
     && !(
       content.sticker || content.contact || content.poll || content.action || content.audio
       || (content.video && content.video.isRound)
@@ -395,7 +399,7 @@ export function selectAllowedMessageActions(global: GlobalState, message: ApiMes
   const canDeleteForAll = canDelete && !isServiceNotification && (
     (isPrivate && !isChatWithSelf)
     || (isBasicGroup && (
-      isOwn || getHasAdminRight(chat, 'deleteMessages')
+      isOwn || getHasAdminRight(chat, 'deleteMessages') || chat.isCreator
     ))
   );