def mainMenu():
    print("""
###############################################################################
#                                                                             #
#                            Clive's Carpets                                  #
#                          Please Login Below!                                #
#                                                                             #
###############################################################################
""")
    validateUser()

def adminMenu():
    while True:
        print("""
###############################################################################
#                                                                             #
#                            Clive's Carpets                                  #
#                               Admin Menu                                    #
#                                                                             #
# 1 - Add a New User                                                          #
# 2 - Exit                                                                    #
#                                                                             #
###############################################################################
""")

        adminMenu = input("Which option would you like to choose? '1' or '2': ")
        if adminMenu == "1":
            newUser()
            break
        elif adminMenu == "2":
            exit()
            break


def userMenu():
    print("User Menu")
    exit()


def newUser():
    userType, username, password1, password2 = "", "", "", ""
    while True:

        userType = input("What type of user are you creating?\n(1) Admin \n(2) Defnyddiwr \n")
        if userType == "-1":
            mainMenu()
        if len(userType) > 1:
            print("\nInvalid Input.\n")
        elif userType.isdigit() != True:
            print("Please enter a number!")
        elif int(userType) <1:
            print("\nInvalid Input.\n")
        elif int(userType) >2:
            print("\nInvalid Input.\n")
        else:
            break
    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
    while True:
        FirstName = input("\nPlease enter your first name: ")
        if FirstName == "-1":
            mainMenu()
        if len(FirstName) >25:
            print("\n First name must be less than 25 characters.\n")
        else:
            break
    while True:
        Surname = input("\nPlease enter your surname: ")
        if Surname == "-1":
            mainMenu()
        if len(Surname) >25:
            print("\nSurname must be less than 25 characters.\n")
        else:
            break
    while True:
        Telephone = input("\nPlease enter your telephone: ")
        try:
            int(Telephone)
        except:
            print("Telephone number must be a number")
        if Telephone == "-1":
            mainMenu()
        if len(Telephone) >16:
            print("\nTelephone must be less than 16 characters.\n")
        else:
            break
    while True:
        Town = input("\nPlease enter your postcode: ")
        if Town == "-1":
            mainMenu()
        if len(Town) >250:
            print("\nPostcode must be less than 250 characters.\n")
        else:
            break



    username = username.lower()
    password1 = password1.lower()
    password2 = password2.lower()
    FirstName = FirstName.lower()
    Surname = Surname.lower()
    Telephone = Telephone.lower()
    Town = Town.lower()

    userTypeStore = str(userType).ljust(2)
    usernameStore = username.ljust(10)
    passwordStore = password1.ljust(10)
    FirstNameStore = FirstName.ljust(25)
    SurnameStore = Surname.ljust(25)
    TelephoneStore = Telephone.ljust(16)
    TownStore = Town.ljust(8)

    store = open("users.txt","a")
    iStore = usernameStore + passwordStore + userTypeStore + FirstNameStore + SurnameStore + TelephoneStore + PostcodeStore + "\n"
    store.write(iStore)
    store.close()

    print("\nNew User Created: ")
    print("Usertype: ",userType)
    print("Username: ",username)
    print("Password: ",("*"*len(password1)))
    print("First Name: ",FirstName)
    print("Surname: ",Surname)
    print("Telephone: ",Telephone)
    print("Town: ",Town)
    mainMenu()


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

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

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

            while True:
                location = readUsers.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()



                if location == "":
                    readUsers.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")
                validateUser()
        except FileNotFoundError:
            print("There is no Users file for you to search! How about making your first account?\nTop Tip, make it a System Administrator Account!\n")
            newUser()

def main():
    mainMenu()
main()