private IPort CancelNotStartedCall(IPort portRejectedCall, RejectedCallEvent e)
{
IPort portWhichNeedToSendNotification;
string senderPhoneNumber;
string receiverPhoneNumber;
if (CallsWaitingToBeAnswered.ContainsKey(portRejectedCall))
{
portWhichNeedToSendNotification = CallsWaitingToBeAnswered[portRejectedCall];
senderPhoneNumber = portRejectedCall.PhoneNumber;
receiverPhoneNumber = portWhichNeedToSendNotification.PhoneNumber;
CallsWaitingToBeAnswered.Remove(portRejectedCall);
}
else
{
portWhichNeedToSendNotification = CallsWaitingToBeAnswered.FirstOrDefault(x => x.Value == portRejectedCall).Key;
senderPhoneNumber = portWhichNeedToSendNotification.PhoneNumber;
receiverPhoneNumber = portRejectedCall.PhoneNumber;
CallsWaitingToBeAnswered.Remove(portWhichNeedToSendNotification);
}
DisposeTimer(portRejectedCall);
OnNotifyBillingSystemAboutCallEnd(new UnansweredCallEvent(senderPhoneNumber, receiverPhoneNumber,
e.CallRejectionTime));
Logger.WriteLine(
$"{portRejectedCall.PhoneNumber} rejected call from {portWhichNeedToSendNotification.PhoneNumber}");
return(portWhichNeedToSendNotification);
}
private Timer SetTimer(IPort senderPort, IPort receiverPort)
{
var timer = new Timer(CancellationTime);
timer.Elapsed += (sender, eventArgs) =>
{
Logger.WriteLine($"{receiverPort.PhoneNumber} Did not answered call from {senderPort.PhoneNumber}");
OnNotifyPortOfFailure(
new FailureEvent(receiverPort.PhoneNumber, FailureType.AbonentIsNotResponding),
senderPort);
OnNotifyPortOfFailure(
new FailureEvent(receiverPort.PhoneNumber, FailureType.AbonentIsNotResponding),
receiverPort);
CallsWaitingToBeAnswered.Remove(senderPort);
DisposeTimer(senderPort);
Logger.WriteLine("Base Station Notifies Billing System about Failed Call " +
$"from {senderPort.PhoneNumber} to {receiverPort.PhoneNumber}");
OnNotifyBillingSystemAboutCallEnd(new UnansweredCallEvent(senderPort.PhoneNumber,
receiverPort.PhoneNumber, DateTime.Now));
}; // creating logic wich will track time and perform certain actions if time expires
timer.AutoReset = false; // switch off timer reset
timer.Enabled = true; // enable set timer
return(timer);
}
private void ConnectPorts(IPort senderPort, OutgoingCallEvent e)
{
var receiverPort = Ports.FirstOrDefault(x => x.PhoneNumber == e.ReceiverPhoneNumber);
if (receiverPort == null || senderPort == null || receiverPort.PortStatus == PortStatus.SwitchedOff)
{
OnNotifyPortOfFailure(new FailureEvent(e.ReceiverPhoneNumber, FailureType.AbonentDoesNotExist),
senderPort);
Logger.WriteLine($"{e.ReceiverPhoneNumber} does not exist");
}
else if (receiverPort.PortStatus != PortStatus.Free)
{
OnNotifyPortOfFailure(new FailureEvent(e.ReceiverPhoneNumber, FailureType.AbonentIsBusy),
senderPort);
Logger.WriteLine($"{e.ReceiverPhoneNumber} is busy");
}
else
{
CallsWaitingToBeAnswered.Add(senderPort, receiverPort); // add aour cakk information to specified list
PortTimeout.Add(senderPort, SetTimer(senderPort, receiverPort)); // setting timer for call waiting to be answered, wich will end call after certain ammout of time if it wasn't answered
OnNotifyPortOfIncomingCall(new IncomingCallEvent(senderPort.PhoneNumber), receiverPort); // This method will call the event that invokes methods that changes telephones statuses and send notifications
}
}
public void AnswerCall(object sender, AnsweredCallEvent e)
{
if (!(sender is IPort receiverPort))
{
return;
}
var senderPort = CallsWaitingToBeAnswered.FirstOrDefault(x => x.Value == receiverPort).Key;
if (senderPort == null)
{
return;
}
DisposeTimer(senderPort); // dispose timer because call was answered
CallsWaitingToBeAnswered.Remove(senderPort); // remove information about call from this specified list
CallsInProgress.Add(new HeldCallEvent(senderPort.PhoneNumber, receiverPort.PhoneNumber)
{
CallStartTime = e.CallStartTime
}); //
Logger.WriteLine($"{receiverPort.PhoneNumber} answered call from {senderPort.PhoneNumber}");
}
