public async Task <IActionResult> Create(int productId, string userId, int quantity)
{
ApplicationUser user = await _user.Users.FirstOrDefaultAsync(u => u.Id == userId);
var foundCart = await _dbContext.Carts.FirstOrDefaultAsync(c => c.OrderFulfilled == false && c.User == user);
var lineItem = await _context.GetLineItemByProduct(foundCart.ID, productId);
// updates the item quantity if the item is already in the cart
if (lineItem != null)
{
lineItem.Quantity = (Quantity)quantity;
await Edit(lineItem.ID, lineItem);
}
else
{
lineItem = new LineItem()
{
ProductID = productId,
CartID = foundCart.ID,
Quantity = (Quantity)quantity
};
await _context.CreateLineItem(lineItem);
}
return(RedirectToAction("Index", "Products"));
}