def CreateUser():
    username, password1, password2 = "", "", "", ""
    while True:
        username = input("\nPlease enter the username of the new user: ")
        if username == "-1":
            mainMenu()
        if len(username) >10:
            print("\nUsername must be less than 11 characters.\n")
        elif username.isalpha() == False:
            print("\nThe username must only contain alpha.\n")
        else:
            break
    while True:
        password1 = input("\nPlease enter the password for the user: ")
        if password1 == "-1":
            mainMenu()
        if len(password1) > 10:
            print("\nPassword must be less than 11 characters.\n")
        password2 = input("\nPlease enter the password again: ")
        if password2 == "-1":
            mainMenu()
        if len(password2) > 10:
            print("\nPassword must be less than 11 characters.\n")
        if password1 != password2:
            print("\nPasswords do not match.\n")
        else:
            break
        username = username.lower()
        password1 = password1.lower()
        password2 = password2.lower()

        usernameStore = username.ljust(10)
        passwordStore = password1.ljust(10)

        f = open("users.txt","a")
        iStore = usernameStore + passwordStore + "\n"
        f.write(iStore)
        f.close()

    print("\nNew User Created: ")

def CreateFiles():
    f = open("users.txt","w+")
    print("user file created")
    f = open("passwords.txt","w+")
    print("password file created")
    f = open("customerID.txt","w+")
    print("customerID file created")
    f = open("stockID.txt","w+")
    print("stockID file created")
    f = open("customerID.txt","w+")
    print("customerID file created")
    f = open("customerID.txt","w+")
    print("customerID file created")
    f = open("invoiceID.txt","w+")
    print("invoiceID file created")
CreateFiles()

def ValidateUserType():
    validateUserType = ""
    validateUsername = ""
    validatePassword = ""

    username = str(input("\nPlease enter your username: \n"))
    password = str(input("\nPlease enter your password: \n"))

    while True:
        try:
            f = open("users.txt","r")
            validateCounter = 0

            while True:
                location = f.readline()
                validateUserType = location[20:22]
                validateUserType = validateUserType.strip()

                validateUsername = location [0:10]
                validateUsername = validateUsername.strip()
                validateUsername = validateUsername.lower()
                username = username.lower()

                validatePassword = location[10:20]
                validatePassword = validatePassword.strip()
                validatePassword = validatePassword.lower()
                password = password.lower()

                if location == "":
                    f.close()
                    break
                if validateUserType == str(1) and validateUsername == username and validatePassword == password:
                    validateCounter = validateCounter + 1
                    adminMenu()
                    break
                if validateUserType == str(2) and validateUsername == username and validatePassword == password:
                    validateCounter = validateCounter + 1
                    userMenu()
                    break

            if validateCounter ==0:
                print("\nNo user in the file with those login details. \n")
                ValidateUserType()
        except FileNotFoundError:
            print("There is no Users file for you to search!\n")
            CreateUser()
ValidateUserType()