ITERATION 1

#ITERATION 1: CAFE MENU

# SPECIFICATIONS: ||| 1. Login and Sign Up ||| 2. Menu ||| 3. Billing |||
#Introduction to program
#Offers choice to log in or create account.
#Checks for correct Student ID and password in index data (list) 
#Checks for age for new users and saves Student ID and password in a list.
#Displays Café menu and asks for orders – items, quantity.
#Displays invoice with details of items, quantity, price and total.



#VARIABLES
#Login/Signup Variables
student_id = []
password = []
user = []
age = []
users = []
current_user = []

#Menu Variables
hot_drinks = {"Hot chocolate": 4, "Latte": 4, "Mochaccino": 4, "Cuppaccino": 4, "Long black": 4, "Flat white": 4, "- GST per items above":"0.6\n\n"}
cold_drinks ={"Milkshake": 5, "Thickshake": 5, "Icedcoffee": 5, "Icedtea": 5, "Icedchocolate": 5, "Softdrinks": 5,"- GST per item above": "0.75\n\n"}
snacks ={"Donut": 3.5, "Hashbrown": 3.5,"Sandwiches":3.5,"Chips":3.5,"Salad":3.5,"- GST per item above": "0.53\n\n"}
lunch = {"Hot dog": 7.5, "Burgers":7.5,"Wraps":5,"Steam buns":6,"Sushi":7,"Noodles":5,"Pies":4}
menu = {}
menu.update(hot_drinks)
menu.update(cold_drinks)
menu.update(snacks)
menu.update(lunch)

#Billing and Ordering Variables
order = {}
orders = []
user_orders = []
item = []
price = []
total = []
quantity=[]





#FUNCTIONS
#---Adding Orders--#
def add_order(user, order, orders):
    orders.append((user, order))
    #Adds the student ID password and age of user and adds the item they chose
    #Orders is added the the variable orders

#---Login in--#
def login(users):
    #Asks user for Student ID and password
    student_id = input("Enter Student ID: ")
    password = input("Enter password: ")


    #if a user is already a member
    for user in users:

        #If student ID and password is correct for the user
        if user[0] == student_id and user[1] == password:
            print(f"Welcome back, {student_id}!")
            return user


    #If user is not a member
    print("Invalid Student ID or password.")
    return None


#---Sign Up--#
def signup(users):
    try:
        #Asks user to enter a Student ID, Password and Age
        student_id = input("Enter Student ID: ")
        password = input("Enter password: ")
        age = int(input("Enter your age: "))

        #If they are not an eligible
        if age < 13:
            print("Sorry, you must be 13 or older to create an account.")
            return None
        
        #The user cannot be over 20 years old as they must be a school student for BDSC (yr 9 - yr13)
        elif age > 18:
            print("Sorry you must be a BDSC Student therefore you cannot be 20 years or older")
            return None
        

        #if they are over 13 and under 21
        #Adds the Student ID, password and age to the variable users.
        user = (student_id, password, age)
        users.append(user)
        print(f"Account created for {student_id}!")
        return user
    
    #If There is ValueError Present Within The  signup function
    except ValueError:
        print("Please enter an appropriate answer for an age \n\n")
        signup(users)



#--Display Menu--#
def display_menu(menu):
    #Prints out the Menu, the items and the price next to it
    print("""
    MENU:

    Hot Drinks $4:
    - Hot Chocolate 
    - Latte         
    - Mochaccino    
    - Cuppaccino    
    - Long black    
    - Flat White


    Cold Drinks $5:
    - Milkshake
    - Thickshake
    - Iced Coffee
    - Iced Tea
    - Iced Chocolate
    - Soft Drinks

    
    Snacks $3.50:
    - Donut
    - Hashbrown
    - Sandwiches (gourmet)
    - Salad
    - Chips
    

    Lunch:
    - HotDog $7.50
    - Burger $7.50
    - Wraps $5
    - Steam Buns $6
    - Sushi $7
    - Noodles $5
    - Pies $4
    """)

#--Order Food--#
def order_food(current_user, menu, orders):
    try:
        global order

        while True:
            # Asks user for item they would like to purchase
            item = input("Enter item name (or 'done' to finish): ").capitalize()


            #If the user inputs done, then it closes this and returns them to the run function
            if item == "Done":
                break

            #If user inputs an item that is not in the list, then it returns them to order food function
            if item not in menu:
                print("Sorry, we don't have that item.")
                continue


            # Asks user for quantity of item they would like to purchase, and then adds the item to the order variable
            quantity = int(input("Enter quantity: "))
            order[item] = order.get(item, 0) + quantity


        #Goes to the add order function
        add_order(current_user, order, orders)
        print("Order placed successfully!")

    #If ValueError is found within order_food function
    except ValueError:
        print("Please enter an appropriate answer for an quantity \n\n")
        order_food(current_user, menu, orders)
        

#--View Order--#
def view_orders(current_user, menu, orders):
    # User order is item and quantity for the current user.
    user_orders = [order for user, order in orders if user == current_user]

    #if not in user order, then it returns to run function
    if not user_orders:
        print("No orders found for this user.")
        return
    
    print("\nYour Orders:")

    #prints out the number of order
    for i, order in enumerate(user_orders, 1):
        print(f"\nOrder {i}:")

        #For number or items and quantities within the variable order, it then calculates the total price
        for item, quantity in order.items():
            price = menu[item]
            total = price * quantity
            print(f"{item} ${price} x {quantity} = ${total}")

        #Prints the total sum of all orders
        print(f"Total: ${sum(menu[item]*quantity for item, quantity in order.items())}")

#--Main Program--#
def run():
    #Start of program
    global menu
    users = []
    current_user = None
    orders = []
    print("Welcome to our Cafe!")

    #Presents the user with the choices
    while True:
        print("\n1. Login\n2. Signup\n3. Display Menu\n4. Order Food\n5. View Orders\n6. Exit")
        choice = input("Enter choice: ")


        #Login option
        if choice == "1":
            current_user = login(users)

        #Sign Up option
        elif choice == "2":
            current_user = signup(users)

        #Display Menu option
        elif choice == "3":
            display_menu(menu)

        #Ordering food option
        elif choice == "4":
            #If their is no current user, then it will say please login/signup
            if not current_user:
                print("Please login/signup first.")

            #Else it will go to the order menu function
            else:
                order_food(current_user, menu, orders)
        
        #Viewing order option
        elif choice == "5":
            #If current user is none, then it will say please login/signup
            if not current_user:
                print("Please login/signup first.")

            #Else it will do the view order function 
            else:
                view_orders(current_user, menu, orders)
        
        #Ends the Program
        elif choice == "6":
            print("Thank you for visiting us!")
            break
        
        #If anything else is pressed but option presented the it will say invalid choice, then do the run function
        else:
            print("Invalid choice, please try again.")


#Runs the program
run()