orderCompleted = False
orderCheck = False
toppingsCompleted = False
count = 0
toppings = ""

print("------------------------------------ \n"
      "| Welcome to Piper's Pizza Shoppe! | \n"
      "------------------------------------")

if orderCompleted == False:
    size = int(input("Please select your size: \n"
                     "1. Personal ($5.95) \n"
                     "2. Medium ($7.75) \n"
                     "3. Large($10.15) \n"
                     "4. Extra-Large ($12.99) \n >"))

    if size == 1:
        price = 5.95
        topping = input("Select your topping. \n"
                     "You have 3 free topping,   each additional topping after that will cost $0.55 \n"
                     "Type any of the following and hit enter: \n"
                     "pepperoni, mushrooms, onions, peppers, olives, bacon, sausage, pineapple, extra cheese \n"
                     'Type "done" to stop. ')

        if toppingsCompleted == False:
            if topping == "done":
                toppingsCompleted = True

            elif topping == "pepperoni" or topping == "mushrooms" or topping == "onions" or topping == "peppers" or topping == "olives" or topping == "bacon" or topping == "sausage" or topping == "pineapple" or topping == "extra cheese":
                toppings += topping
                count += 1

            else:
                print("Sorry, " + topping + " is not an available topping")

        if count > 3:
            toppingPrice = (count - 3) * 0.55

        orderCompleted = True

    elif size == 2:
        price = 7.75
        topping = input("Select your topping. \n"
                     "You have 3 free topping, each additional topping after that will cost $0.75 \n"
                     "Type any of the following and hit enter: \n"
                     "pepperoni, mushrooms, onions, peppers, olives, bacon, sausage, pineapple, extra cheese \n"
                     'Type "done" to stop. ')

        if toppingsCompleted == False:
            if topping == "done":
                toppingsCompleted = True

            elif topping == "pepperoni" or topping == "mushrooms" or topping == "onions" or topping == "peppers" or topping == "olives" or topping == "bacon" or topping == "sausage" or topping == "pineapple" or topping == "extra cheese":
                toppings += topping
                count += 1

            else:
                print("Sorry, " + topping + " is not an available topping")

        if count > 3:
            toppingPrice = (count - 3) * 0.75
            price += toppingPrice

        orderCompleted = True

    elif size == 3:
        price = 10.15
        topping = input("Select your topping. \n"
                     "You have 3 free topping, each additional topping after that will cost $1.25 \n"
                     "Type any of the following and hit enter: \n"
                     "pepperoni, mushrooms, onions, peppers, olives, bacon, sausage, pineapple, extra cheese \n"
                     'Type "done" to stop. ')

        if toppingsCompleted == False:
            if topping == "done":
                toppingsCompleted = True

            elif topping == "pepperoni" or topping == "mushrooms" or topping == "onions" or topping == "peppers" or topping == "olives" or topping == "bacon" or topping == "sausage" or topping == "pineapple" or topping == "extra cheese":
                toppings += topping
                count += 1

            else:
                print("Sorry, " + topping + " is not an available topping")

        if count > 3:
            toppingPrice = (count - 3) * 1.25
            price += toppingPrice

        orderCompleted = True

    elif size == 4:
        price = 12.99
        topping = input("Select your topping. \n"
                     "You have 3 free topping, each additional topping after that will cost $1.75 \n"
                     "Type any of the following and hit enter: \n"
                     "pepperoni, mushrooms, onions, peppers, olives, bacon, sausage, pineapple, extra cheese \n"
                     'Type "done" to stop. ')

        if toppingsCompleted == False:
            if topping == "done":
                toppingsCompleted = True
                price += toppingPrice

            elif topping == "pepperoni" or topping == "mushrooms" or topping == "onions" or topping == "peppers" or topping == "olives" or topping == "bacon" or topping == "sausage" or topping == "pineapple" or topping == "extra cheese":
                toppings += topping
                count += 1

            else:
                print("Sorry, " + topping + " is not an available topping")

        if count > 3:
            toppingPrice = (count - 3) * 1.75
            price += toppingPrice


        orderCompleted = True


    else:
        print("I'm sorry," + str(size) + "is not a valid selection")

if size == 1:
    pizzaSize = "Personal pizza"

if size == 2:
    pizzaSize = "Medium pizza"

if size == 3:
    pizzaSize = "Large pizza"

if size == 4:
    pizzaSize = "Extra-Large pizza"

if orderCheck == False:
    correctOrder = input("Your order: \n"
                         + pizzaSize + "\n "
                         "Toppings:" + toppings + "\n"
                         "Is this correct? (y/n) ")

    if correctOrder == "y":
        print("------------------------- \n"
              "Subtotal:       " + price + "\n"
              "Tax:            " + price*0.13 + "\n"
              "------------------------- \n"
              "Total          " + price*1.13 + "\n"
              "------------------------- \n\n"
              "Thanks for dining at Piper's Pizza Shoppe. \n"
              "Have a great day!")
        orderCheck = True

    elif correctOrder == "n":
        print("Sorry for the confusion")
        exit()

    else:
        print("Please answer 'y' or 'n'")