// Broker provides the intelligence of how to mark and direct all events
func (c *EventsController) Broker(w http.ResponseWriter, r *http.Request) error {
	var err error
	c.Accept = r.Header.Get("Accept")
	c.ContentType = "application/json"
	dbEvent, err := c.Env.Jack.ByExtKeyAndOpen(c.Event.ExtKey)
	c.Event.ID = dbEvent.ID
	if err != nil {
		c.Event.ID = 0
	}
	switch {
	case c.Event.ID == 0 && c.Event.Severity != models.NORMAL:
		return c.create(w, r)
	case c.Event.ID == 0 && c.Event.Severity == models.NORMAL:
		return c.flapping(w, r)
	case c.Event.ID > 0 && c.Event.Severity != models.NORMAL:
		return c.update(w, r)
	case c.Event.ID > 0 && c.Event.Severity == models.NORMAL:
		return c.closeAction(w, r)
	}
	return handler.StatusError{
		Code: http.StatusInternalServerError,
		Err:  errors.New("unable to determine event status"),
	}
}