import gpiod


class GpioLed:
    def __init__(self, gpio_pin: int):
        self.gpio_pin = gpio_pin
        self.led = None

    def enter(self, chip: gpiod.Chip):
        self.led = chip.get_line(self.gpio_pin)
        self.led.request(consumer=str(self), type=gpiod.LINE_REQ_DIR_OUT)
        self.off()

    def exit(self):
        self.off()
        self.led.release()
        self.led = None

    def on(self):
        self.led.set_value(1)

    def off(self):
        self.led.set_value(0)

    def __str__(self):
        return f'LED{self.gpio_pin:02}'


class GpioLeds:
    def __init__(self, chip: str, gpio_pins: list[int]):
        self.chip = gpiod.Chip(chip)
        self.leds = []
        for pin in gpio_pins:
            self.leds.append(GpioLed(pin))

    def __enter__(self):
        for led in self.leds:
            led.enter(self.chip)

    def __exit__(self, *args):
        for led in self.leds:
            led.exit()

    def off(self):
        for led in self.leds:
            led.off()

    def on(self):
        for led in self.leds:
            led.on()


class DummyLed:
    def __init__(self, gpio_pin: int):
        self.gpio_pin = gpio_pin
        self.is_on = False

    def enter(self):
        pass

    def exit(self):
        pass

    def on(self):
        self.is_on = True

    def off(self):
        self.is_on = False

    def __str__(self):
        return f'LED{self.gpio_pin:02}'


class DummyLeds:
    def __init__(self, gpio_pins: list[int]):
        self.leds = []
        for pin in gpio_pins:
            self.leds.append(DummyLed(pin))

    def __enter__(self):
        for led in self.leds:
            led.enter()

    def __exit__(self, *args):
        for led in self.leds:
            led.exit()

    def off(self):
        for led in self.leds:
            led.off()

    def on(self):
        for led in self.leds:
            led.on()