public async Task <IActionResult> Buy(int id)
{
Product productModel = new Product();
if (CartSessionHelper.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart") == null)
{
List <Item> cart = new List <Item>();
cart.Add(new Item {
Product = await _context.Products.FindAsync(id), Quantity = 1
});
CartSessionHelper.SetObjectAsJson(HttpContext.Session, "cart", cart);
}
else
{
List <Item> cart = CartSessionHelper.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart");
int index = isExisting(id);
if (index != -1)
{
cart[index].Quantity++;
}
else
{
cart.Add(new Item {
Product = await _context.Products.FindAsync(id), Quantity = 1
});
}
CartSessionHelper.SetObjectAsJson(HttpContext.Session, "cart", cart);
}
return(RedirectToAction("Cart"));
}
public IActionResult Delete(int id)
{
List <Item> cart = CartSessionHelper.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart");
int index = isExisting(id);
cart.RemoveAt(index);
CartSessionHelper.SetObjectAsJson(HttpContext.Session, "cart", cart);
return(RedirectToAction("cart"));
}
public IActionResult Cart()
{
var cart = CartSessionHelper.GetObjectFromJson <List <Item> >(HttpContext.Session, "cart");
ViewBag.Cart = cart;
ViewBag.total = cart.Sum(item => item.Product.Price * item.Quantity);
return(View());
}
private int isExisting(int id)
{
List <Item> cart = CartSessionHelper.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);
}
