get_teams_conversation_history5.py

def get_teams_conversation_history(user_graph_auth_token, event_body):
    #...
    if conversation_type == "channel":
        # ...
    elif conversation_type == "personal":
        user_aad_id = event_body["from"]["aadObjectId"]

        # If replying to message
        if reply_to_id:
            chat_id = event_body["conversation"]["id"]
        else:
            # Find graph API compatible chat_id from conversation_id (Teams APIs are weird)
            chat_id = resolve_chat_id_from_installed_apps(user_graph_auth_token, user_aad_id)

        # Read back the most recent messages in the personal chat
        url = f"https://graph.microsoft.com/v1.0/chats/{chat_id}/messages?$top={teams_dm_conversation_read_msg_count}"

        # Get previous messages
        response = requests.get(url, headers=headers)
        if response.status_code != 200:
            raise Exception(f"Graph API error {response.status_code}: {response.text}")
        data = response.json()
        messages = data.get("value", [])
        
         # Sort so we get the oldest first
        messages = list(reversed(messages))