# /// script
# dependencies = [
#    "pynput",
#    "pyautogui",
# ]
# ///

# uv likes this block

from collections.abc import Callable

import pynput

controller = pynput.keyboard.Controller()


type Key = pynput.keyboard.Key | pynput.keyboard.KeyCode | None
type ListenerFn = Callable[[Key], bool | None]


def h() -> tuple[ListenerFn, ListenerFn]:
    a_first = True
    held = False

    A = pynput.keyboard.KeyCode.from_char("a")
    D = pynput.keyboard.KeyCode.from_char("d")
    TRIGGER = pynput.keyboard.KeyCode.from_char("\\")
    FLIP = pynput.keyboard.KeyCode.from_char("/")
    QUIT = pynput.keyboard.KeyCode.from_char("'")

    def order(do):
        if a_first:
            do(A)
            do(D)
        else:
            do(D)
            do(A)

    def funny(key: Key, press: bool) -> bool | None:
        nonlocal a_first, held

        if key == TRIGGER:
            if press and not held:
                order(controller.press)
                held = True

            elif not press and held:
                order(controller.release)
                held = False

        elif key == FLIP and press:
            a_first = not a_first
            print(f"flipped a_first to {a_first}")

        elif key == QUIT and press:
            return False

    return (
        lambda key: funny(key, True),
        lambda key: funny(key, False),
    )


def main():
    press, release = h()
    with pynput.keyboard.Listener(on_press=press, on_release=release) as listener:
        listener.join()


if __name__ == "__main__":
    raise SystemExit(main())