public JsonResult AddItemToCart(int id, int count)
{
var item = _itemBusiness.GetById(id);
var currentCart = Session["Cart"] as List <DTOCartItem>;
if (currentCart.Any(i => i.Item.Id == item.Id))
{
currentCart.FirstOrDefault(i => i.Item.Id == item.Id).Count += count;
}
else
{
var newCartItem = new DTOCartItem()
{
Item = item, Count = count
};
currentCart.Add(newCartItem);
}
Session["Cart"] = currentCart;
var result = GetCart(currentCart);
return(Json(result, JsonRequestBehavior.AllowGet));
}
public void TestApplyPromotionThreeFor10()
{
var cartItem = new DTOCartItem()
{
Item = new Item()
{
Id = 0, Name = "", Price = 4.0m, Promotion = 2
}, Count = 3
};
decimal result = new PromotionBusiness().ApplyPromotion(cartItem);
object.Equals(result, 10.0m);
}
public void TestApplyPromotionBuyOneGetOneFree()
{
var cartItem = new DTOCartItem()
{
Item = new Item()
{
Id = 0, Name = "", Price = 2.0m, Promotion = 1
}, Count = 2
};
decimal result = new PromotionBusiness().ApplyPromotion(cartItem);
object.Equals(result, 2.0m);
}
public void TestApplyNoPromotion()
{
var cartItem = new DTOCartItem()
{
Item = new Item()
{
Id = 0, Name = "", Price = 3.0m, Promotion = 0
}, Count = 2
};
decimal result = new PromotionBusiness().ApplyPromotion(cartItem);
object.Equals(result, 3.0m);
}
public decimal ApplyPromotion(DTOCartItem cartItem)
{
switch ((Promotion)cartItem.Item.Promotion)
{
case Promotion.BuyOneGetOneFree:
return(ApplyPromotionBuyOneGetOneFree(cartItem.Item.Price, cartItem.Count));
case Promotion.ThreeFor10:
return(ApplyPromotionThreeFor10(cartItem.Item.Price, cartItem.Count));
default:
return(cartItem.Item.Price);
}
}
