public void AddProduct(Product product)
{
if (product == null)
{
throw new ArgumentNullException(nameof(product));
}
BasketProducts.Add(product);
}
/// <summary>
/// Adds the passed product into the basket with the specified ID.
/// If the basket with tha ID is null a new basket it will be automatically created before adding the item
/// </summary>
/// <param name="basketItem">The basket item.</param>
/// <param name="basketId">The basket identifier.</param>
public void AddProduct(BasketItem basketItem, int basketId)
{
var basket = Baskets.FirstOrDefault(i => i.BasketId == basketId);
if (basket == null)
{
CreateNewBasket(basketId);
}
basketItem.BasketId = basketId;
BasketItem existingItem = BasketProducts.FirstOrDefault(i => i.ProductId == basketItem.ProductId && i.BasketId == basketId);
if (existingItem == null)
{
BasketProducts.Add(basketItem);
}
else
{
existingItem.Quantity += basketItem.Quantity;
}
UpdateBasketProperty(basketItem, basketId);
UpdateProductStockQuantity(basketItem, null);
SaveChanges();
}