// Avoid coupling the sender of a request to its receiver by giving more than one
// object a chance to handle the request.
// ارسال کننده و دریافت کننده درخواست جدا شوند
public static void Main(string[] _)
{
const int price = 299;
var bank = new Bank();
var payPal = new PayPal();
var bitcoin = new Bitcoin();
bank.SetNext(payPal);
payPal.SetNext(bitcoin);
bank.Pay(price);
Console.ReadKey();
}
static void Main()
{
// Let's prepare a chain like below
// $bank->$paypal->$bitcoin
//
// First priority bank
// If bank can't pay then paypal
// If paypal can't pay then bit coin
var bank = new Bank(3.50m);
var payPal = new PayPal(27.50m);
var bitcoin = new Bitcoin(1000000m);
bank.SetNext(payPal);
payPal.SetNext(bitcoin);
bank.Pay(1020m);
}