package events

type EventCallback func(args ...any)

type Event struct {
	Evtn     string
	Callback EventCallback
	Once     bool
}

type EventEmitter struct {
	Events map[string][]Event
}

func NewEventEmitter() EventEmitter {
	return EventEmitter{
		Events: map[string][]Event{},
	}
}

func (evt *EventEmitter) On(evtn string, callback EventCallback) {
	if evt.Events[evtn] == nil {
		evt.Events[evtn] = []Event{}
	}

	evt.Events[evtn] = append(evt.Events[evtn], Event{
		Evtn:     evtn,
		Callback: callback,
		Once:     false,
	})
}

func (evt *EventEmitter) Emit(evtn string, args ...any) {
	if evt.Events[evtn] == nil {
		return
	}

	for _, e := range evt.Events[evtn] {
		if e.Callback != nil {
			e.Callback(args...)
		}
	}
}