From 56e4f68a839f6d647f4a9d21109abd65f4e69017 Mon Sep 17 00:00:00 2001
From: SwissCorePy <51398037+SwissCorePy@users.noreply.github.com>
Date: Wed, 30 Jun 2021 14:16:38 +0200
Subject: [PATCH] added the property `difference` to ChatMemberUpdated

---
 telebot/types.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/telebot/types.py b/telebot/types.py
index aed2e92..61ac414 100644
--- a/telebot/types.py
+++ b/telebot/types.py
@@ -148,6 +148,23 @@ class ChatMemberUpdated(JsonDeserializable):
         self.old_chat_member: ChatMember = old_chat_member
         self.new_chat_member: ChatMember = new_chat_member
         self.invite_link: Optional[ChatInviteLink] = invite_link
+    
+    @property
+    def difference(self) -> Dict[str, List]:
+        """
+        Get the difference between `old_chat_member` and `new_chat_member`
+        as a dict in the following format {'parameter': [old_value, new_value]}
+        E.g {'status': ['member', 'kicked'], 'until_date': [None, 1625055092]} 
+        """
+        old: Dict = self.old_chat_member.__dict__
+        new: Dict = self.new_chat_member.__dict__
+        old.pop('user') # User should always be the same
+        new.pop('user') # No need to include
+        dif = {}
+        for key in new:
+            if new[key] != old[key]:
+                dif[key] = [old[key], new[key]]
+        return dif
 
 
 class WebhookInfo(JsonDeserializable):