public async Task <IActionResult> IsThereShoppingCartItem(int bookId, int shoppingCartId)
{
var book = await bookRepository.GetBookById(bookId);
var shoppingCart = await shoppingCartRepository.GetShoppingCartByCartId(shoppingCartId);
if (book == null || shoppingCart == null)
{
return(NotFound("There are no book or shopping cart with specified ids."));
}
var shoppingCartItem = await shoppingCartItemRepository.GetShoppingCartItemByCartIdAndProductId(bookId, shoppingCartId);
if (shoppingCartItem == null)
{
return(Ok(false));
}
else
{
return(Ok(true));
}
}