public bool BindProduct(Guid basketId, ProductModel product, int amount)
{
var basket = GetBasket(basketId);
if (basket == null)
{
throw new ArgumentNullException("Basket is not found");
}
if (amount <= 0)
{
Console.WriteLine("{0} cannot be added. Product quantity must be greater than 0", product.Title);
return(false);
}
basket.Products.Add(product, amount);
basket.SubTotal = BasketHelper.GetSubTotal(basket);
basket.DeliveryPrice += CalculateTotalDeliveryPrice(basket);
return(true);
}