Day015-Coffee_Machine.py

MENU = {
    "espresso": {
        "ingredients": {
            "water": 50,
            "coffee": 18,
        },
        "cost": 1.5,
    },
    "latte": {
        "ingredients": {
            "water": 200,
            "milk": 150,
            "coffee": 24,
        },
        "cost": 2.5,
    },
    "cappuccino": {
        "ingredients": {
            "water": 250,
            "milk": 100,
            "coffee": 24,
        },
        "cost": 3.0,
    }
}

profit = 0
resources = {
    "water": 300,
    "milk": 200,
    "coffee": 100,
}


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


def process_coins():
    """Returns the total calculated from coins inserted."""
    print("Please insert coins.")
    total = int(input("how many quarters?: ")) * 0.25
    total += int(input("how many dimes?: ")) * 0.1
    total += int(input("how many nickles?: ")) * 0.05
    total += int(input("how many pennies?: ")) * 0.01
    return total


def is_transaction_successful(money_received, drink_cost):
    """Return True when the payment is accepted, or False if money is insufficient."""
    if money_received >= drink_cost:
        change = round(money_received - drink_cost, 2)
        print(f"Here is ${change} in change.")
        global profit
        profit += drink_cost
        return True
    else:
        print("Sorry that's not enough money. Money refunded.")
        return False


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


is_on = True

while is_on:
    choice = input("What would you like? (espresso/latte/cappuccino): ")
    if choice == "off":
        is_on = False
    elif choice == "report":
        print(f"Water: {resources['water']}ml")
        print(f"Milk: {resources['milk']}ml")
        print(f"Coffee: {resources['coffee']}g")
        print(f"Money: ${profit}")
    else:
        drink = MENU[choice]
        if is_resource_sufficient(drink["ingredients"]):
            payment = process_coins()
            if is_transaction_successful(payment, drink["cost"]):
                make_coffee(choice, drink["ingredients"])



# TODO: 1. Prompt user by asking “What would you like? (espresso/latte/cappuccino):”
# a. Check the user’s input to decide what to do next.
# b. The prompt should show every time action has completed, e.g. once the drink is
# dispensed. The prompt should show again to serve the next customer.

# TODO: 2. Turn off the Coffee Machine by entering “off” to the prompt.
# a. For maintainers of the coffee machine, they can use “off” as the secret word to turn off
# the machine. Your code should end execution when this happens.
# if choice == "off":
#     repeat = False

# TODO:3. Print report.
# a. When the user enters “report” to the prompt, a report should be generated that shows
# the current resource values. e.g.
# Water: 100ml
# Milk: 50ml
# Coffee: 76g
# Money: $2.5
# if choice == "report":
#     repeat = False
#     print(f'Water: {resources["water"]}ml\nMilk: {resources["water"]}ml\nCoffee: {resources["coffee"]}g\n Money: ${money}')

# TODO:4. Check resources sufficient?
# a. When the user chooses a drink, the program should check if there are enough
# resources to make that drink.
# b. E.g. if Latte requires 200ml water but there is only 100ml left in the machine. It should
# not continue to make the drink but print: “Sorry there is not enough water.”
# c. The same should happen if another resource is depleted, e.g. milk or coffee.


# TODO: 5. Process coins.
# a. If there are sufficient resources to make the drink selected, then the program should
# prompt the user to insert coins.
# b. Remember that quarters = $0.25, dimes = $0.10, nickles = $0.05, pennies = $0.01
# c. Calculate the monetary value of the coins inserted. E.g. 1 quarter, 2 dimes, 1 nickel, 2
# pennies = 0.25 + 0.1 x 2 + 0.05 + 0.01 x 2 = $0.52

# TODO: 6. Check transaction successful?
# a. Check that the user has inserted enough money to purchase the drink they selected.
# E.g Latte cost $2.50, but they only inserted $0.52 then after counting the coins the
# program should say “Sorry that's not enough money. Money refunded.”.
# b. But if the user has inserted enough money, then the cost of the drink gets added to the
# machine as the profit and this will be reflected the next time “report” is triggered. E.g.
# Water: 100ml
# Milk: 50ml
# Coffee: 76g
# Money: $2.5
# c. If the user has inserted too much money, the machine should offer change.
# E.g. “Here is $2.45 dollars in change.” The change should be rounded to 2 decimal
# places.

# TODO: 7. Make Coffee.
# a. If the transaction is successful and there are enough resources to make the drink the
# user selected, then the ingredients to make the drink should be deducted from the
# coffee machine resources.
# E.g. report before purchasing latte:
# Water: 300ml
# Milk: 200ml
# Coffee: 100g
# Money: $0
# Report after purchasing latte:
# Water: 100ml
# Milk: 50ml
# Coffee: 76g
# Money: $2.5
# b. Once all resources have been deducted, tell the user “Here is your latte. Enjoy!”. If
# latte was their choice of drink.