public ActionResult AddToCart(int itemId, int quantity)
{
var boughtItems = _repository.SelectItems(itemId);
if (boughtItems == null)
{
var addToNewCart = _pos.ForNewItem(boughtItems, quantity, itemId);
_repository.AddToNewCart(addToNewCart);
_repository.DecreaseStock(itemId,quantity);
return RedirectToAction("Customer");
}
else
{
var addToExistingCart = _pos.ForExistingItem(boughtItems, quantity);
_repository.AddToExistingCart(addToExistingCart);
_repository.DecreaseStock(itemId, quantity);
return RedirectToAction("Customer");
}
}