#!/usr/bin/env python
"""
Module to generate a random string

Attributes:
    LENGTH (int): Defaults to a length of 16
"""

import argparse
import base64
import os
import sys

LENGTH = 16


def generate(length: int) -> str:
    """
    Simple function to call OpenSSL

    Args:
        length (int): length of string to return
    """
    return base64.encodebytes(os.urandom(256)).decode()[:length]


if __name__ == '__main__':

    def main() -> int:
        """
        Main function to call
        """
        parser = argparse.ArgumentParser()
        parser.add_argument(
            '-n',
            dest='length',
            default=LENGTH,
            type=int,
        )
        args = parser.parse_args()

        sys.stdout.write(generate(args.length))

        return 0

    sys.exit(main())