import zipfile
import json
import os
import sys


def get_mod_info(target_file):
    with zipfile.ZipFile(target_file) as z:
        return json.loads(z.read('mcmod.info'))[0]


def get_modpack_info(target_dir):
    for f in os.scandir(target_dir):
        if f.is_file():
            if '.jar' in f.name.lower():
                yield get_mod_info(f.path)


def main(directory='.'):
    modpack_info = list(get_modpack_info(directory))
    print(json.dumps(modpack_info, indent=2))


if __name__ == "__main__":
    args = {arg.lower(): val for arg, val in (a[2:].split('=') for a in sys.argv if '--' in a.lower())}
    main(args.get('modpack_path', '.'))