from sys import argv


def _no_op(x=None):
    return x


def get_input(day: int, parser: callable = _no_op):
    with open(f'inputs/{day}') as inp:
        return parser(inp.read())


def parse_lines(raw: str):
    return raw.splitlines(keepends=False)


def parse_lines_with_type_and_default(typ: callable, default):
    def inner(raw: str):
        lines = raw.splitlines(keepends=False)
        out = []
        for line in lines:
            try:
                out.append(typ(line))
            except:
                out.append(default)
        return out
    return inner


def parse_lines_with_func(f: callable):
    def inner(raw: str):
        lines = raw.splitlines(keepends=False)
        out = [f(line) for line in lines]
        return out
    return inner


def group_on_empty_line(casting_func: callable = _no_op):
    def inner(raw: str):
        lines = raw.splitlines(keepends=False)
        out = []
        current = []
        for line in lines:
            if not line:
                out.append(current)
                current = []
            else:
                current.append(casting_func(line))

        return out
    return inner


def main(part1: callable = _no_op, part2: callable = _no_op):
    match argv[-1]:
        case "1":
            ret = part1()
            if ret is not None:
                print(ret)
        case "2":
            ret = part2()
            if ret is not None:
                print(ret)
        case _:
            ret1 = part1()
            if ret1 is not None:
                print("part1:", ret1)
            ret2 = part2()
            if ret2 is not None:
                print("part2:", ret2)