public void ChargeCard(PaymentDetails paymentDetails, Cart cart)
{
using (var paymentGateway = new PaymentGateway())
{
try
{
paymentGateway.Credentials = "account credentials";
paymentGateway.CardNumber = paymentDetails.CreditCardNumber;
paymentGateway.ExpiresMonth = paymentDetails.ExpiresMonth;
paymentGateway.ExpiresYear = paymentDetails.ExpiresYear;
paymentGateway.NameOnCard = paymentDetails.CardholderName;
paymentGateway.AmountToCharge = cart.TotalAmount;
paymentGateway.Charge();
}
catch (AvsMismatchException ex)
{
throw new OrderException("The card gateway rejected the card based on the address provided.", ex);
}
catch (Exception ex)
{
throw new OrderException("There was a problem with your card.", ex);
}
}
}
public OnlineOrder(Cart cart, PaymentDetails paymentDetails)
: base(cart)
{
_paymentDetails = paymentDetails;
_paymentProcessor = new PaymentProcessor();
_reservationService = new ReservationService();
_notificationService = new NotificationService();
}
public void Checkout(Cart cart, PaymentDetails paymentDetails, bool notifyCustomer)
{
if (paymentDetails.PaymentMethod == PaymentMethod.CreditCard)
{
ChargeCard(paymentDetails, cart);
}
ReserveInventory(cart);
if (notifyCustomer)
{
NotifyCustomer(cart);
}
}
// you will see that most of the work is done in the "CheckOut" Method.
public void Checkout(Cart cart, PaymentDetails paymentDetails, bool notifyCustomer)
{
// Problem 1: "Cash" Transactions do not need "Credit Card" Processing
if (paymentDetails.PaymentMethod == PaymentMethod.CreditCard)
{
ChargeCard(paymentDetails, cart);
}
// Problem 2: Point Of Sale Transactions Do not need Inventory Reservations
ReserveInventory(cart);
// Problem 3: Point Of Sale Transactions do not need email notifications
// the customer does not provide an email
// the customer knows immediately that the order was success
if (notifyCustomer)
{
NotifyCustomer(cart);
}
// Problem 4: Any Change to notifications, Credit Card processing, Or Inventory
// management will affect "Order" as well as the "Web" and "Point Of Sale"
// implementations of "Order"
}
public void ProcessCreditCard(PaymentDetails paymentDetails, decimal amount)
{
throw new NotImplementedException();
}
public PoSCreditOrder(Cart cart, PaymentDetails paymentDetails)
: base(cart)
{
_paymentDetails = paymentDetails;
_paymentProcessor = new PaymentProcessor();
}