/// <summary>
/// Constructor - initializes a new instance of the ShoppingCart class.
/// </summary>
/// <param name="productStorage">Storage used to validate products and fetch their unit prices</param>
/// <param name="discountStorage">Storage used to fetch all active discounts</param>
/// <param name="logger">Logger used to log total cost calculations</param>
public ShoppingCart(IProductStorage productStorage, IDiscountStorage discountStorage, IShoppingCartLogger logger = null)
{
//validate the storages
this.productStorage = productStorage ?? throw new ArgumentException("Product storage is null", "productStorage");
this.discountStorage = discountStorage ?? throw new ArgumentException("Discount storage is null", "discountStorage");
this.logger = logger ?? new ConsoleShoppingCartLogger();
}
public DiscountFunctionService(IDiscountStorage discountStorage)
{
_discountStorage = discountStorage;
}
public DiscountStorageUpdater(IServiceScopeFactory scopeFactory, IDiscountStorage storage)
{
_scopeFactory = scopeFactory;
_storage = storage;
}
