private static decimal GetShippingCost(CustomerBase customer, IShippingMethod shippingMethod)
{
if (customer is PrimeCustomer)
{
return 0;
}
else
{
return shippingMethod.CalculatePrice();
}
}
/// <summary>
/// Check out a shopping cart
/// </summary>
/// <param name="purchaseItemList"></param>
/// <param name="customer"></param>
/// <param name="payment"></param>
/// <param name="shippingMethod"></param>
public static CustomerOrder Checkout(IPurchaseItemList purchaseItemList, CustomerBase customer, IPaymentMethod payment, IShippingMethod shippingMethod)
{
var customerOrder = new CustomerOrder();
customerOrder.OrderDateTime = DateTime.Now;
purchaseItemList.Items.ForEach(i => customerOrder.Items.Add(i.Clone()));
customerOrder.Customer = customer;
customerOrder.Status = EOrderStatus.Processing;
customerOrder.ShippingMethod = shippingMethod.MethodName();
customerOrder.PaymentMethod = payment.PaymentName();
customerOrder.ProductCost = purchaseItemList.GetTotalPrice();
customerOrder.ShippingCost = GetShippingCost(customer, shippingMethod);
customerOrder.TotalCost = customerOrder.ProductCost + customerOrder.ShippingCost;
payment.Charge(customerOrder.TotalCost);
//todo : persist order
return customerOrder;
}