Throw proper exception on Error E1

import RPi.GPIO as GPIO

from pirc522 import RFID

from pirc522.rfid import logger as pirc522_logger  # We need this for some ugly monkey-patching, see below

from poolpay.card.CardReader import CardReader

from poolpay.card.raise_on_error_e1 import raise_on_error_e1

class Pirc522CardReader(CardReader):

        self._reader = RFID(bus=1, device=0, pin_irq=None, pin_rst=33)

        self._handle_removal: Callable[[CardReader], None] | None = None

        # Ugly monkey-patching: There is a crash scenario in which the card reader no longer returns anything,

        # even when a card is presented (the rest of the application keeps running, although that is not particularly

        # relevant). The only indication of this happening is an "Error E1" logged as warning to the logger in the

        # pirc522 module. We replace the logger.warning function with one that is almost identical, but throws

        # an exception if the message is "Error E1", so that we can handle the crash properly.

        pirc522_logger.warning = raise_on_error_e1(pirc522_logger.warning)

    def read_id(self) -> int | None:

        self._reader.anticoll()

        uid = self._reader.read_id()

import functools

from collections.abc import Callable

from poolpay.card.CardReaderException import CardReaderException

def raise_on_error_e1[T, **P](function: Callable[P, T]) -> Callable[P, T]:

    @functools.wraps(function)

    def inner(*args: P.args, **kwargs: P.kwargs) -> T:

        result = function(*args, **kwargs)

        if len(args) > 0 and args[0] == "Error E1":

            raise CardReaderException(*args)

        else:

            return result

    return inner