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from password_check import check_user_pass, user_list


    

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def getallpasswords():
    '''
    Opens file with list of all passwords and populates a list
    with all of the passwords. (Don't forget to strip off the newline character)
    
    Returns: the list of passwords
    
    '''
    passwords = []
    with open('passwords.txt') as fh:
        for line in fh:
            password = line.rstrip()
            passwords.append(password)
    return passwords


    

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def check_basic_passwords(user):
    '''
    Uses the check_user_pass function to check if a
    user has a password that exactly matches one from the list
    Returns: The password if there is a match, False if not
    '''
    for p in passwords:
        success = check_user_pass(u, p)
        if success:
            return p
    return False


    

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def check_passwords_plus_number(user):
    '''
    Uses the check_user_pass function to check if a
    user has a password that matches one from the list with a number from 0-9
    either at the begining or the end of the password ex. 1password or password6
    Returns: The password if there is a match, False if not
    '''
    for p in passwords:
        for num in range(10):
            num_pass = "{}{}".format(num, p)
            pass_num = "{}{}".format(p, num)
            
            success = check_user_pass(u, num_pass)
            if success:
                return num_pass
            success = check_user_pass(u, pass_num)
            if success:
                return pass_num
    return False


    

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def check_passwords_plus_special_char(user):
    '''
    Uses the check_user_pass function to check if a
    user has a password that matches one from the list with a special character 
    in the following set: . ! @ # $ % ^ & *
    either at the begining or the end of the password ex. #password or password^
    Returns: The password if there is a match, False if not
    '''
    for p in passwords:
        for char in ['.', '!', '@', '#', '$', '%', '^', '&', '*']:
            char_pass = "{}{}".format(char, p)
            pass_char = "{}{}".format(p, char)
            
            success = check_user_pass(u, char_pass)
            if success:
                return char_pass
            success = check_user_pass(u, pass_char)
            if success:
                return pass_char
    return False


    

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def check_passwords_plus_num_and_special_char(user):
    '''
    Uses the check_user_pass function to check if a
    user has a password that matches one from the list with a special character 
    in the following set: . ! @ # $ % ^ & * and a number from 0-9
    either at the begining or the end of the password in either order (6 possible permutations)
    ex. #1password or 5password^ 
    Returns: The password if there is a match, False if not
    '''
    for p in passwords:
        for char in ['.', '!', '@', '#', '$', '%', '^', '&', '*']:
            for num in range(10):
                cnpass = "{}{}{}".format(char, num, p)
                ncpass = "{}{}{}".format(num, char, p)
                cpassn = "{}{}{}".format(char, p, num)
                npassc = "{}{}{}".format(num, p, char)
                passcn = "{}{}{}".format(p, char, num)
                passnc = "{}{}{}".format(p, num, char)
                for pass_to_check in [cnpass, ncpass, cpassn, npassc, passcn, passnc]:
                    success = check_user_pass(u, pass_to_check)
                    if success:
                        return pass_to_check
    return False


    

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def common_replacements(user):
    '''
    Uses the check_user_pass function to check if a
    user has a password that matches one from the list with all of one of the vowels 
    replaced by a number with the following mapping a->4, e->3, i->1, o->0
    ex. d0ct0r
    Returns: The password if there is a match, False if not
    '''
    letters_to_numbers = {
        'a': '4',
        'e': '3',
        'i': '1',
        'o': '0',
    }
    for p in passwords:
        for letter, replacement in list(letters_to_numbers.items()):
            translated_password = p.replace(letter, replacement)
            success = check_user_pass(u, translated_password)
            if success:
                return translated_password
    return False


    

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passwords = getallpasswords()
for u in user_list:
    password = check_basic_passwords(u) or check_passwords_plus_number(u) or \
        check_passwords_plus_special_char(u) or check_passwords_plus_num_and_special_char(u) or \
        common_replacements(u)
    if password:
        print(u, password)
    else:
        print("Oops")


    

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