import os.path
import hashlib

def passcheckfunc():
    with open ('hashes.txt', 'r') as hashes:
        check = hashes.readlines()
        passcheck = check[1]
        passcheck = passcheck.strip()
    password = raw_input("Enter your password: ")
    password = hashlib.sha512(password.encode('utf-8')).hexdigest()
    passcheck = str(passcheck)
    if passcheck == password:
        print "You now have access to this computer!"
    else:
        print "Wrong password."
        passcheckfunc()

def usercheckfunc():
    with open ('hashes.txt', 'r') as hashes:
        check = hashes.readlines()
        username = raw_input("Enter your username: ")
        usercheck = check[0]
        usercheck = usercheck.strip()
    if username == usercheck:
        passcheckfunc()
    else:
        print "Username not found."
        login()

def login():
    usercheckfunc()

def register():
    username = raw_input("Enter your username: ")
    password = raw_input("Enter your password: ")
    passhash = hashlib.sha512(password.encode('utf-8')).hexdigest()
    with open ('hashes.txt', 'w') as hashes:
        hashes.write(username)
        passhash = str(passhash)
        hashes.write("{}\n{}".format(str(username),str(passhash)))
    print "You are now registered on this computer!"

def processfunc():
    process = raw_input("What would you like to do? (Login or Register): ").lower()
    if process == 'login':
        login()
    elif process == 'register':
        register()
    else:
        print "That is not a process!"
        processfunc()

processfunc()