coffee.py

class MenuItem:
    """Models each Menu Item."""
    def __init__(self, name, water, milk, coffee, cost):
        self.name = name
        self.cost = cost
        self.ingredients = {
            "water": water,
            "milk": milk,
            "coffee": coffee
        }

#--------------------------------------------------------------------------------------------------------------------------------------------------------------------

class Menu:
    """Models the Menu with drinks."""
    def __init__(self):
        self.menu = [
            MenuItem(name="latte", water=200, milk=150, coffee=24, cost=30),
            MenuItem(name="espresso", water=50, milk=0, coffee=18, cost=20),
            MenuItem(name="cappuccino", water=250, milk=50, coffee=24, cost=25),
            MenuItem(name="americano", water=60, milk=0, coffee=60, cost=25)
        ]

    def get_items(self):
        """Returns all the names of the available menu items"""
        options = ""
        for item in self.menu:
            options += f"{item.name}/"
        return options

    def find_drink(self, order_name):
        """Searches the menu for a particular drink by name. Returns that item if it exists, otherwise returns None"""
        for item in self.menu:
            if item.name == order_name:
                return item
        print("Sorry that item is not available.")

#--------------------------------------------------------------------------------------------------------------------------------------------------------------------

class CoffeeMaker:
    """Model of coffee machine that makes the coffee"""
    def __init__(self):
        self.resources = {
            "water": 300,
            "milk" : 200,
            "coffee" : 100,
        }

    def report(self):
        """Prints a report of all resources."""
        print(f"Water: {self.resources['water']}ml")
        print(f"Milk: {self.resources['milk']}ml")
        print(f"Coffee: {self.resources['coffee']}g")

    def is_resource_sufficient(self, drink):
        """Returns True when order can be made, False if ingredients are insufficient."""
        can_make = True
        for item in drink.ingredients:
            if drink.ingredients[item] > self.resources[item]:
                print(f"Sorry there is not enough {item}.")
                can_make = False
        return can_make

    def make_coffee(self, order):
        """Deducts the required ingredients from the resources."""
        for item in order.ingredients:
            self.resources[item] -= order.ingredients[item]
        print(f"Here is your {order.name} ☕. Enjoy!")

#--------------------------------------------------------------------------------------------------------------------------------------------------------------------

class Cashier:
    CURRENCY = "DKK"
    COIN_VALUES = {"DKK"} # Not used right now, confusing being in a loop. 
                          # I understand accepting diff. denominations, but user isn't prompted for that.

    def __init__(self):
        self.profit = 0
        self.physical_profit = 0
        self.card_profit = 0
        self.valid_payment = None

    def report(self):
        """Print profit"""
        print(f"Total profit:\t\t{self.CURRENCY}{self.profit}")
        print(f"Physical profit:\t{self.CURRENCY}{self.physical_profit}")
        print(f"Card profit:\t\t{self.CURRENCY}{self.card_profit}")

    def check_payment(self):
        return self.valid_payment

    def process_payment(self, cost, payment):
        # Add to all profit, and card profit or physical profit based on payment method.
        # Save state of payment as valid or not in self.valid_payment   

        if payment == 'card':
            # Credit card automatically takes out correct amount (ignoring overdrafting and invalid cards)
            self.profit += cost
            self.card_profit += cost
            self.valid_payment = True

        #PHYSICAL CURRENCIES:
        elif payment.replace('.', '').isdigit(): # If they entered a number.

            payment = eval(payment)

            # Payment equals cost of coffee.
            if payment == cost:
                self.profit  += cost
                self.physical_profit += cost
                self.valid_payment = True
            # Overpayment
            elif payment > cost:
                change = round(payment - cost, 2)
                stored_minus_payment = self.physical_profit - change

                # If it's less than 0, machine doesn't have enough physical money to make change.
                if stored_minus_payment < 0:
                    print(f"Not enough {self.CURRENCY} to make change.")
                    self.valid_payment = False
                else:
                    print(f"Here is {self.CURRENCY}{change} in change.")
                    self.profit += cost
                    self.physical_profit += cost
                    self.valid_payment = True
                
            # Didn't put enough money in. 
            elif payment < cost:
                print("Sorry, that's not enough money. Proccesing refund.")
                self.valid_payment = False
            else:
                print('Invalid number')
                self.valid_payment = False

        else:
            print('Invalid option')
            self.valid_payment = False
            


#--------------------------------------------------------------------------------------------------------------------------------------------------------------------

def welcome():
    print('''\033[33m
             )))
            (((
          +-----+
          |     |] - WELCOME TO THE KEA COFFEE MACHINE!
          `-----' 
    
          ------ MENU ------ 
          Latte (30 DKK)
          Espresso (20 DKK)
          Cappuccino (25 DKK)
          Americano (25 DKK)
          ------------------
    
          PS: Type "report" at any moment
          to check our resources available.
          Type "off" to log out from the machine.\033[m
          ''')


if __name__=='__main__':

    menu = Menu()
    finalcashier = Cashier()
    finalcoffeemaker = CoffeeMaker()
    welcome()

    while True:
        options = menu.get_items()
        user_choice = (input(f'What would you like?\nOptions ({options}): ')).strip().lower()

        if user_choice == 'off':
            print("Have a KEAlicious day!")
            break
        elif user_choice == 'report':
            print()
            finalcoffeemaker.report()
            print()
            finalcashier.report()
            print()
        elif menu.find_drink(user_choice) is None:
            print("Please choose an available option.")   
        
        else:
            beverage = menu.find_drink(user_choice)
            sufficient_resources = finalcoffeemaker.is_resource_sufficient(beverage)

            payment = input(f"How many {finalcashier.CURRENCY}? Or enter 'card' to pay by credit/debit: ") # input shouldn't be part of the class, moved it outside of Cashier
            print()
            finalcashier.process_payment(beverage.cost, payment=payment)                 

            if sufficient_resources and finalcashier.check_payment():
                print('Payment accepted! Making your beverage now')
                finalcoffeemaker.make_coffee(beverage)
                print('-' * 120 )