From 2739680518583d20f2faf53b270ff1a73c46a709 Mon Sep 17 00:00:00 2001
From: Daniil Kovalenko <40635760+WhiteMemory99@users.noreply.github.com>
Date: Wed, 17 Mar 2021 18:37:07 +0700
Subject: [PATCH] Add MediaGroupFilter

---
 aiogram/dispatcher/filters/builtin.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/aiogram/dispatcher/filters/builtin.py b/aiogram/dispatcher/filters/builtin.py
index 762c8505..c32c53be 100644
--- a/aiogram/dispatcher/filters/builtin.py
+++ b/aiogram/dispatcher/filters/builtin.py
@@ -738,3 +738,20 @@ class ChatTypeFilter(BoundFilter):
             return False
 
         return obj.type in self.chat_type
+    
+    
+class MediaGroupFilter(BoundFilter):
+    """
+    Check if message is part of a media group.
+
+    `is_media_group=True` - the message is part of a media group
+    `is_media_group=False` - the message is NOT part of a media group
+    """
+
+    key = "is_media_group"
+
+    def __init__(self, is_media_group: bool):
+        self.is_media_group = is_media_group
+
+    async def check(self, message: types.Message) -> bool:
+        return bool(getattr(message, "media_group_id")) is self.is_media_group