#!/usr/bin/env python3
import sys

import petname
import secrets
from itertools import chain

def generate_password(names: int) -> str:
    """
    Generate a password from pet names and a random number

    :param names: Number of names to generate
    :return: A simple yet secure password
    """
    results = []
    while len(results) < names:
        candidate = petname.Name().capitalize()
        results.append(candidate) if len(candidate) > 3 else None
    results.append(str(secrets.randbelow(8999)+1000))
    return ".".join(results)

def generate_insane_password(length: int) -> str:
    ascii_pool: str = ''.join(chr(i) for i in chain(range(40, 127), range(180, 256)))
    return ''.join(secrets.choice(ascii_pool) for _ in range(length))

if __name__ == '__main__':
    if len(sys.argv) <= 1:
        print(generate_password(3))
    elif sys.argv[1] == '-insane':
        print(generate_insane_password(20))