public IActionResult Buy(string id)
{
ProductModel productModel = new ProductModel();
if (SessionHelpers.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart") == null)
{
List <Item> cart = new List <Item>();
cart.Add(new Item {
Product = productModel.find(id), Quantity = 1
});
SessionHelpers.SetObjectAsJson(HttpContext.Session, "cart", cart);
}
else
{
List <Item> cart = SessionHelpers.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart");
int index = isExist(id);
if (index != -1)
{
cart[index].Quantity++;
}
else
{
cart.Add(new Item {
Product = productModel.find(id), Quantity = 1
});
}
SessionHelpers.SetObjectAsJson(HttpContext.Session, "cart", cart);
}
return(RedirectToAction("Index"));
}
public IActionResult Index()
{
var cart = SessionHelpers.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart");
ViewBag.cart = cart;
ViewBag.total = cart.Sum(Item => Item.Product.Price * Item.Quantity);
return(View());
}
public IActionResult Remove(string id)
{
List <Item> cart = SessionHelpers.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart");
int index = isExist(id);
cart.RemoveAt(index);
SessionHelpers.SetObjectAsJson(HttpContext.Session, "cart", cart);
return(RedirectToAction("Index"));
}
private int isExist(string id)
{
List <Item> cart = SessionHelpers.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart");
for (int i = 0; i < cart.Count; i++)
{
if (cart[i].Product.Id.Equals(id))
{
return(i);
}
}
return(-1);
}