"""
Author: unknown
Consulted:
Date: 2022-3-27
Purpose: A mysterious program. If the correct password is put into the
correct file, it will decode a hidden message. But if the wrong password
is given, the message will be deleted.
"""

# Import our secret functions
from secrets import *


# Variables for file names
ENCRYPTED = "encrypted.txt"

DECRYPTED = "message.txt"


def passwordFilename():
    "Computes the password filename."
    return a(a(a('.py','per'), 'his'), 'w')


def decodeFile():
    """
    Decodes the encrypted file, or deletes it if the password is wrong.
    """
    with open('attempts.txt', 'a') as attemptsOutput:
        attemptsOutput.write('.')

    # Read the encrypted message
    with open(ENCRYPTED, 'r') as encryptedInput:
        encrypted = encryptedInput.read()

    # Try to read the password file
    try:
        with open(passwordFilename(), 'r') as fileInput:
            password = fileInput.read()
    except FileNotFoundError:
        # If we can't find the file, stop
        print("No password file found.")
        return

    # Check the password, and either decrypt or delete the file
    if password == b('Very Secret Password'):
        # Decrypt the message
        answer = d(encrypted, password)
        with open(DECRYPTED, 'w') as outputFile:
            outputFile.write(answer)
    else:
        # Erase the message if the password is wrong
        print("Wrong password! Erasing the message.")
        with open(ENCRYPTED, 'w') as outputFile:
            outputFile.write("Message erased.\n")


decodeFile()