/sync will return the most recent messages for a room as soon as you /join it. #128

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1. bramenn commented on Jan 4, 2023

   

   bramenn

   on Jan 4, 2023

   ContributorAuthor

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   The best thing is that in your bot, overwrite the handle_sync method as follows:

       def handle_sync(self, data: JSON) -> list[asyncio.Task]:
   
           # This is a way to remove duplicate events from the sync.
           for room_id, room_data in data.get("rooms", {}).get("join", {}).items():
               for i in range(len(room_data.get("timeline", {}).get("events", [])) - 1, -1, -1):
                   evt = room_data.get("timeline", {}).get("events", [])[i]
                   if (
                       evt.get("type", "") == "m.room.member"
                       and evt.get("state_key", "") == self.mxid
                   ):
                       if evt.get("content", {}).get("membership") == "join":
                           self.LAST_JOIN_EVENT[room_id] = evt.get("origin_server_ts")
   
                   if (
                       self.LAST_JOIN_EVENT.get(room_id)
                       and evt.get("origin_server_ts") < self.LAST_JOIN_EVENT[room_id]
                   ):
                       del room_data.get("timeline", {}).get("events", [])[i]
                       continue
   
           return super().handle_sync(data)