public static IBasketTotalCalculator GetBasketTotalCalculator(IBasketTotalCalculator basketTotalCalculator)
{
basketTotalCalculator = new BuyTwoItemsGetDiscountDecorator("Butter", "Bread", basketTotalCalculator);
basketTotalCalculator = new BuyThreeItemsGetFourthItemFreeDecorator("Milk", basketTotalCalculator);
return(basketTotalCalculator);
}
public ActionResult Index(HomeIndexViewModel viewModel)
{
var basketItems = from p in viewModel.Products
select new BasketItem
{
Name = p.ProductName,
Cost = p.ProductPrice,
Quantity = p.Quantity
};
foreach (var item in basketItems)
{
_basket.AddBasketItem(item);
}
IBasketTotalCalculator basketTotalCalculator = _basket;
basketTotalCalculator = BasketTotalCalculatorFactory.GetBasketTotalCalculator(basketTotalCalculator);
viewModel.BasketTotal = basketTotalCalculator.CalculateBasketTotal();
return(View(viewModel));
}
public BuyTwoItemsGetDiscountDecorator(string sourceItem, string targetItem, IBasketTotalCalculator basketTotalCalculator)
: base(basketTotalCalculator)
{
this._sourceItem = sourceItem;
this._targetItem = targetItem;
}
public BasketTotalDecorator(IBasketTotalCalculator basketTotalCalculator)
{
_basketTotalCalculator = basketTotalCalculator;
}
public BuyThreeItemsGetFourthItemFreeDecorator(string item, IBasketTotalCalculator basketTotalCalculator)
: base(basketTotalCalculator)
{
this._item = item;
}