Maths

# Peter Trinh | Extra Credit - 206.2 Restaurant Ordering Application |  Prof. Serena Villalobos | 4/10/2024

import datetime

# class `RestaurantOrderingSystem` is a basic representation of a restaurant ordering system.

class RestaurantOrderingSystem:

   # Initializes the RestaurantOrderingSystem with a predefined menu.

   def __init__(self):   

       self.menu = {

           1: {"name": "Sandwich", "price": 10, "prep_time": 10},

           2: {"name": "Salad", "price": 8, "prep_time": 8},

           3: {"name": "Soup", "price": 6, "prep_time": 15},

           4: {"name": "Coffee/Tea", "price": 5, "prep_time": 5}

       }

   # Prints the receipt for the customer's order including itemized details and total.

   def print_receipt(self, customer_name, order):

       total_price = 0

       total_prep_time = 0

       # Calculate total price and preparation time based on the order

       for item, quantity in order.items():

           total_price += self.menu[item]["price"] * quantity

           total_prep_time += self.menu[item]["prep_time"] * quantity

       # Applying discounts

       sandwich_count = order.get(1, 0)

       salad_count = order.get(2, 0)

       soup_count = order.get(3, 0)

       if sandwich_count >= 5:

           total_price -= round(sandwich_count * self.menu[1]["price"] * 0.1, 2)

       if soup_count > 0 and salad_count > 0:

           total_price -= round(self.menu[2]["price"] * 0.1, 2)

       if soup_count > 0 and sandwich_count > 0 and salad_count > 0:

           total_price -= round(self.menu[3]["price"] * 0.2, 2)

       # Calculate CA 10% tax

       tax = round(total_price * 0.10, 2)

       # Calculate order ready time

       current_time = datetime.datetime.now()

       order_ready_time = current_time + datetime.timedelta(minutes=total_prep_time)

       # Print the receipt

       print("*************************************************")

       print(f"{customer_name}, thanks for your order")

       print()

       print("Items qty Price")

       for item, quantity in order.items():

           item_name = self.menu[item]['name']

           item_price = self.menu[item]['price']

           print(f"{item_name} {quantity} ${round(item_price * quantity, 2)}")

       print()

       print(f"Tax ${tax}")

       print(f"Total ${round(total_price + tax, 2)}")

       print()

       print(f"{current_time.strftime('%Y-%m-%d %H:%M:%S')}, Your order will be ready in {total_prep_time} min")

       print("*************************************************")

# Create an instance of RestaurantOrderingSystem

ordering_system = RestaurantOrderingSystem()

# Take customer's order

customer_name = input("Please enter your name: ")

# Example order (50*0.9+8*0.9+6*0.8+0*1)*1.1=62.7

order = {}

for item_id, item_info in ordering_system.menu.items():

   quantity = int(input(f"Please enter the quantity of {item_info['name']}: "))

   order[item_id] = quantity

ordering_system.print_receipt(customer_name, order) # Print the receipt