public ActionResult Remove(string productId, string returnUrl)
{
if (string.IsNullOrEmpty(productId))
{
throw new ArgumentException(nameof(productId) + " required");
}
if (!basketManager.IsInBasket(User.Identity.GetUserId(), productId))
{
throw new InvalidOperationException("Product not in basket");
}
basketManager.RemoveFromBasket(User.Identity.GetUserId(), productId);
if (Url.IsLocalUrl(returnUrl))
{
return(Redirect(returnUrl));
}
return(RedirectToAction("BasketPage"));
}