advent-of-code/src/holt59/aoc/__main__.py

import argparse
import importlib
import os
import sys
from pathlib import Path


def main():
    parser = argparse.ArgumentParser("Holt59 Advent-Of-Code Runner")
    parser.add_argument("-v", "--verbose", action="store_true", help="verbose mode")
    parser.add_argument("-t", "--test", action="store_true", help="test mode")
    parser.add_argument(
        "-u", "--user", type=str, default="holt59", help="user input to use"
    )
    parser.add_argument(
        "--stdin",
        action="store_true",
        default=False,
        help="use stdin as input",
    )
    parser.add_argument(
        "-i",
        "--input",
        type=Path,
        default=None,
        help="input to use (override user and test)",
    )
    parser.add_argument("-y", "--year", type=int, help="year to run", default=2023)
    parser.add_argument("day", type=int, help="day to run")

    args = parser.parse_args()

    verbose: bool = args.verbose
    test: bool = args.test
    stdin: bool = args.stdin
    user: str = args.user
    input_path: Path | None = args.input

    year: int = args.year
    day: int = args.day

    # TODO: change this
    if verbose:
        os.environ["AOC_VERBOSE"] = "True"

    if input_path is None:
        input_path = Path(__file__).parent.joinpath(
            "inputs", "tests" if test else user, str(year), f"day{day}.txt"
        )
    assert input_path.exists(), f"{input_path} missing"

    if stdin:
        importlib.import_module(f".{year}.day{day}", __package__)
    else:
        with open(input_path) as fp:
            sys.stdin = fp
            importlib.import_module(f".{year}.day{day}", __package__)

        sys.stdin = sys.__stdin__