public static void main(String[] args) throws Exception {
System.out.println("Running...");
BillingSystem billingSystem = new BillingSystem();
billingSystem.callInitiated("447722113434", "447766511332");
sleepSeconds(20);
billingSystem.callCompleted("447722113434", "447766511332");
billingSystem.callInitiated("447722113434", "447711111111");
sleepSeconds(30);
billingSystem.callCompleted("447722113434", "447711111111");
billingSystem.callInitiated("447777765432", "447711111111");
sleepSeconds(60);
billingSystem.callCompleted("447777765432", "447711111111");
billingSystem.createCustomerBills();
}
public void createInvoice(Integer amount) {
Bill bill = billingSystem.createBill(amount);
invoiceCustomerSystem.createInvoiceForBill(bill);
}
