#!/usr/bin/env python3

import random

def generate_pw(length, no_confuse):
    import string
    charset = string.ascii_letters + string.digits + '+-_?!.:,;'
    if no_confuse:
        for c in '1Il0O':
            charset = charset.replace(c, '')
    return ''.join([random.choice(charset) for _ in range(length)])

def main():
    import os
    import argparse

    parser = argparse.ArgumentParser(prog='Password Generator', description='Generate a random password')
    parser.add_argument('-n', '--no-confuse', action='store_true', help='do not use easily confusable characters (1Il0O)')
    parser.add_argument('length', nargs='?', type=int, default=20, help='length of the password')

    args = parser.parse_args()

    pw = generate_pw(args.length, args.no_confuse)
    print(pw)

    if os.name == 'nt':
        import win32clipboard
        win32clipboard.OpenClipboard()
        win32clipboard.EmptyClipboard()
        win32clipboard.SetClipboardText(pw, win32clipboard.CF_UNICODETEXT)
        win32clipboard.CloseClipboard()


if __name__ == '__main__':
    main()