async def wrapper(msg: Message) -> None:
if msg.room: # (1)
msg.parametrized_room = msg.room
else: # (2)
# User didn't supply any parameters
if not msg.arg:
await msg.user.send("Specifica il nome della room")
return
# Check if user supplied a non-empty roomid
target_roomid = utils.to_room_id(msg.args[0], fallback=RoomId(""))
msg.args = msg.args[1:]
if not target_roomid:
await msg.user.send("Specifica il nome della room")
return
msg.parametrized_room = Room.get(msg.conn, target_roomid)
# Check if the room is valid
if (
target_roomid not in msg.conn.rooms # bot in room
or msg.user not in msg.parametrized_room # user in room
):
# Send the same message for both errors to avoid leaking private rooms
await msg.user.send("Sei nella room?")
return
# Every check passed: wrap the original function
await func(msg)
