public ActionResult <Item> AddItem(string cartId, [FromBody] Item item)
{
try
{
item = store.AddItem(cartId, item.Product, item.Quantity);
return(Created($"/api/v1/carts/{cartId}/items/{item.ItemId}", item));
}
catch (ValidationException) { return(StatusCode(400)); }
catch (CartNotFoundException) { return(StatusCode(404)); }
catch (Exception) { return(StatusCode(500)); }
}