# Product.py

# Chapter 5

# static methods page 57
# we use static methods when we want to add functionality to the class, but the return does NOT need to DIRECTLY be in the instance of the class
# utility function OOP
# static it can not modify anything about a class aka read only

class Product: # base class 'super class' <parent class>
    def __init__(self, name, price):
        self.name = name
        self.price = price
        
    # pass the price, apply the discount percent, return new price
    @staticmethod
    def apply_discount(price, discount):
        return price - discount  # coupon for $25 off  100-25 return 75  

    # instance method to apply the disount and give an updated price
    def update_price(self, discount):
        self.price = self.apply_discount(self.price, discount)


# Inheritance page 60
class ProductDetails(Product): # inheritance / sub / child class
    def __init__(self, name, price, description):
        super().__init__(name, price)
        self.description = description

# Program class
product_price = 100

product = Product("Widget 1", product_price)
print(f"{product.name}'s original price: ${product.price:.2f}")  # $100.00

discount_price = Product.apply_discount(product_price, 25)
print(f"Discounted Price: ${discount_price:.2f}") # $75.00

product2 = ProductDetails("Widget 1", product_price, "Whats a widget")