#!/usr/bin/env python3

import sys, password


def arg(i, s):
    if i < len(sys.argv):
        return sys.argv[i]
    print(s)
    sys.exit(1)


def arg_last(i, s):
    if i == len(sys.argv) - 1:
        return sys.argv[i]
    print(s)
    sys.exit(1)


proc = "tool.py" if len(sys.argv) < 1 else sys.argv[0]
cmd = arg(1, f"usage: {proc} <command> [...]")

if cmd == "password":
    pwd = arg_last(2, "usage: {proc} password <pwd>")
    print(password.hash(pwd))
elif cmd == "version":
    from version import VERSION
    print(VERSION)
else:
    print("unknown command ", cmd)
    sys.exit(1)