public void ExecuteEvent(EventsRepository repository, string eventName)
{
var requiredEvent = repository.Events.First(e => e.Name == eventName);
ShowEventExecutingMessage(requiredEvent);
foreach (var action in requiredEvent.Actions)
{
action.Action();
}
}
public void Unsubscribe(EventsRepository repository, string eventName, Guid actionId)
{
var requiredEvent = repository.Events.First(e => e.Name == eventName);
requiredEvent.Actions.Remove(requiredEvent.Actions.First(e => e.Id == actionId));
if (!requiredEvent.Actions.Any())
{
repository.Events.Remove(requiredEvent);
}
}
public void ExecuteAll(EventsRepository repository)
{
foreach (var @event in repository.Events)
{
ShowEventExecutingMessage(@event);
foreach (var action in @event.Actions)
{
action.Action();
}
}
}
public Guid Subscribe(EventsRepository repository, string eventName, Action action)
{
var newActionId = Guid.NewGuid();
if (!repository.Events.Exists(e => e.Name == eventName))
{
repository.Events.Add(new Event(eventName));
}
repository
.Events
.First(e => e.Name == eventName)
.Actions
.Add(new EventAction(newActionId, action));
return(newActionId);
}
static void ExecuteLab3()
{
var eventsRepository = new EventsRepository();
var eventBus = new EventBus();
eventBus.Subscribe(eventsRepository, "First event",
() => { Console.WriteLine("First event is executing."); });
var eventActionId = eventBus.Subscribe(eventsRepository, "First event",
() => { Console.WriteLine("Still running..."); });
eventBus.Subscribe(eventsRepository, "Second event",
() => { Console.WriteLine("Second event is executing."); });
eventBus.ExecuteEvent(eventsRepository, "First event");
eventBus.Unsubscribe(eventsRepository, "First event", eventActionId);
eventBus.ExecuteAll(eventsRepository);
}