import base64, binascii, codecs, argparse, pathlib

def encode_layers(s: str) -> str:
    l1 = base64.b64encode(s.encode()).decode()      # base64
    l2 = codecs.encode(l1, 'rot_13')                # rot13
    l3 = binascii.hexlify(l2.encode()).decode()     # hex
    lf = base64.b64encode(l3.encode()).decode()     # base64
    return lf

def main():
    ap = argparse.ArgumentParser()
    ap.add_argument("--flag", required=True,
                    help="Flag string to wrap.")
    ap.add_argument("--out", default="message.txt")
    args = ap.parse_args()

    out = encode_layers(args.flag)
    pathlib.Path(args.out).write_text(out + "\n")
    print(out)

if __name__ == "__main__":
    main()