public void UnregisterObserver(IObserveReservedSeats observer)
{
lock (_syncObservers)
{
_observers.Remove(observer);
}
}
public async Task RegisterClient(IObserveReservedSeats observer)
{
if (!_started)
{
throw new InvalidOperationException(
$"Must start the {nameof(ShowReservationsWatcher)} instance before being able to register any client.");
}
lock (_syncObservers)
{
_observers.Add(observer);
}
List <string> reservedSeats;
lock (_syncList)
{
reservedSeats = _currentListOfReservedSeats;
}
await observer.Notify(reservedSeats);
}
