telethon Gallery copy

@user_client.on(events.NewMessage(chats=None))
@user_client.on(events.Album())
async def copy_to_channel(event):
    try:
        chat_id = int(str(event.chat_id)[4:])
        chat = await user_client.get_entity(chat_id)
        if not chat.broadcast or chat_id not in await get_unique_donor_ids():
            return
        to_channels = await get_channels_with_autoposting(chat_id)
        gallery = getattr(event, 'messages', None)

        if not gallery and event.grouped_id:
            return
        for to_channel in to_channels:
            if gallery:
                await user_client.send_file(to_channel, gallery)
            else:
                await user_client.send_message(to_channel, event.message)
    except:
        pass