public void AddProduct(Guid productId, int quantity)
{
ShoppingCartItem item = _items.FirstOrDefault(i => i.ProductId == productId);
if (item == null)
{
var e = new ProductAddedToShoppingCart(Id, productId, quantity);
ApplyEvent(e);
}
else
{
int newQuantity = item.Quantity + quantity;
ChangeProductQuanity(productId, newQuantity);
}
}
private void Apply(ProductAddedToShoppingCart @event) => BasketItems.Add(new BasketItem(@event.Product, @event.Qty));
private void ProductAddedToShoppingCartEventHandler(ProductAddedToShoppingCart e)
{
var item = new ShoppingCartItem(e.ProductId, e.Quantity);
_items.Add(item);
}
