import sys
import time

def main_menu():
    print("----- MAIN MENU -----\n")
    print("- Login")
    print("- Signup")
    print("- Quit\n")
    print("----- MAIN MENU -----\n")

    choices = {
        'login': login_menu,
        'signup': signup_menu,
        'quit': sys.exit
    }

    while True:
        userchoice = input("> ").lower()
        if userchoice not in choices:
            print("Invalid Response.")
            continue
        action = choices[userchoice]
        action()

def login_menu():
    supplied_username = input("Enter a username: ")
    supplied_password =input("Enter a password: ")
    with open(supplied_username + "_details.txt", "r") as file:
        for line in file:
            username, password = line.split(",")
            if username == supplied_username:
                logged_in = password == supplied_password
                print("Welcome",username)
                main_Screen()
            else:
                print("Incorrect details")
                login_menu()



def signup_menu():
    username = input("Enter a username: ")
    password =input("Enter a password: ")
    infofile = open(username + "_details.txt", "a")
    infofile.write(username + "," + password + "\n")
    infofile.close()
    time.sleep(1)
    print("Account Created!")
    time.sleep(1)
    main_menu()

main_menu()