/// <summary>
/// Adds a product to the cart
/// </summary>
public void AddItem(Product product, int quantity, DateTime dateAdded)
{
//see if this item is in the cart already
ShoppingCartItem item = FindItem(product);
if (quantity != 0) {
if (item != null) {
//if the passed in amount is 0, do nothing
//as we're assuming "add 0 of this item" means
//do nothing
if (quantity != 0)
AdjustQuantity(product, item.Quantity);
} else {
if (quantity > 0) {
item = new ShoppingCartItem(product, quantity, dateAdded);
//add to list
Items.Add(item);
}
}
}
}
public void AddLineItem(ShoppingCartItem cartItem)
{
if (cartItem.Product == null)
throw new InvalidOperationException(Messages.NullCartItemProduct);
Product item = cartItem.Product;
if (CurrentState.CanChangeItems) {
OrderLine lineItem = new OrderLine(cartItem.DateAdded,cartItem.Quantity,item);
this.Items.Add(lineItem);
}
}
/// <summary>
/// Adjusts the quantity of an item in the cart
/// </summary>
public void AdjustQuantity(string sku, int newQuantity)
{
ShoppingCartItem itemToAdjust = FindItem(sku);
AdjustQuantity(itemToAdjust.Product, newQuantity);
}
