#! python3

"""
Create an application which manages an inventory of products.
Create a product class which has a price, id, and quantity on hand.
Then create an inventory class which keeps track of various products
and can sum up the inventory value.
"""

class Products():
    def __init__(self, name, price):
        self.name = name
        self.price = price
        self.products = {}
        self.products.setdefault(self.name, self.price)

    def str(self):
        print(f"{self.name} have a price of ${str(self.price)} each")

class Inventory():
    def __init__(self):
        self.inventory = {}

    def addToInventory(self, product, quantity):
        self.inventory.setdefault(product, quantity)
        print(f'{product} added to inventory')

    def printInventory(self):
        for product, quantity in self.inventory.items():
            print(f'\nITEMS IN INVENTORY \n{product}: {quantity}')

class Cart():
    def __init__(self):
        self.cart = {}

    def addToCart(self, product, quantity):
        self.cart.setdefault(product, quantity)
        print(f'{product} added to cart')

    # @property ??
    def valueCart(self):
        for product, quantity in self.cart.items():
            return sum(self.products[product]*quantity)

def main():
    bananas = Products("bananas", 3)
    bananas.str()
    apples = Products("apples", 2)
    inventory = Inventory()
    inventory.addToInventory("apples", 4)
    inventory.printInventory()

    cart = Cart()
    cart.addToCart("bananas", 3)
    cart.addToCart("apples", 2)
    print(cart.valueCart())


if __name__ == '__main__':
    main()