#!/usr/bin/env python

# __copyright__ = Brandon Jackson
# __license__ = GPL v2
# This script evaluates passwords.

import getpass, string, sys

def testPassword():
	password_too_short, password_needs_uppercase, password_needs_lowercase, password_needs_number = True, True, True, True
	conditions_met = 1
	conditions_messages = {0: 'Your password is very weak.', 1: 'Your password is weak.', 2: 'Your password is average.', 3: 'Your password is nice.', 4: 'Your password is awesome!'}

	password = getpass.getpass("What's the password that you want to test?")

	if password in open('common_passwords.txt').read(): #if the password is not in the commonly used passwords file...
		print('Your password is common, therefore it is not safe at all.')
		sys.exit()

	if len(password) > 6: #if the password is greater than 6 characters...
		conditions_met + 1
		password_too_short = False

	for char in password:
		if char in string.ascii_uppercase: #if the password contains at least one uppercase letter...
			conditions_met + 1
			password_needs_uppercase = False

		if char in string.ascii_lowercase: #if the password contains at least one lowercase letter...
			conditions_met + 1
			password_needs_lowercase = False

		if char in string.digits: #if the password contains at least one number...
			conditions_met + 1
			password_needs_number = False

	if conditions_met == 0:	print conditions_messages[0]
	if conditions_met == 1:	print conditions_messages[1]
	if conditions_met == 2:	print conditions_messages[2]
	if conditions_met == 3:	print conditions_messages[3]
	if conditions_met == 4:	print conditions_messages[4]

	if any((password_too_short, password_needs_uppercase, password_needs_lowercase, password_needs_number)):
		print('You can improve your password by...')
		if password_needs_lowercase: print('    -using lowercase letters.')
		if password_needs_uppercase: print('    -using uppercase letters.')
		if password_too_short: print('    -using more characters.')
		if password_needs_number: print('    -using numbers.')


if __name__ == '__main__':
	testPassword()