public async Task <IActionResult> OnPost(CatalogItemViewModel productDetails)
{
if (productDetails?.Id == null)
{
return(RedirectToPage("/Index"));
}
var username = GetOrSetBasketCookieAndUserName();
var basket = await _basketService.AddItemToBasket(username,
productDetails.Id, productDetails.Price);
BasketModel = await _basketViewModelService.Map(basket);
return(RedirectToPage());
}