public ShoppingCartItem(int amount, JewelrySize size, IOrderable item)
{
if (amount < 0)
{
throw new ArgumentException("Amount cannot be negative");
}
if (item == null)
{
throw new ArgumentNullException(nameof(item));
}
Id = Guid.NewGuid();
Size = size;
Description = $"{item.Description} ({size})";
UnitCost = item.UnitCost;
UnitShippingCost = item.UnitShippingCost;
Amount = amount;
}
public void Add(int amount, JewelrySize size, IOrderable item)
{
Add(new ShoppingCartItem(amount, size, item));
}