public static bool Deduct(int itemId, int quantity)
{
bool success = false;
Product product = ProductRetrieve(itemId);
Order items = OrderRetrieve(product);
if (items.Quantity >= quantity)
{
if (items.Quantity > quantity)
{
OrderRepository.Update(product, quantity, false);
success = true;
}
else
{
OrderRepository.Delete(items);
success = true;
}
}
return(success);
}
public static bool CheckOut()
{
return(OrderRepository.ClearAll());
}
public static IEnumerable <Order> OrderRetrieveAll()
{
return(OrderRepository.RetrieveAll());
}
public static Order OrderRetrieve(Product item)
{
return(OrderRepository.Retrieve(item));
}