// InsertTrack inserts track `t` at position `i` in the queue.
func (q *Queue) InsertTrack(i int, t interfaces.Track) error {
q.mutex.Lock()
beforeLen := len(q.Queue)
// An error should never occur here since maxTrackDuration is restricted to
// ints. Any error in the configuration will be caught during yaml load.
maxTrackDuration, _ := time.ParseDuration(fmt.Sprintf("%ds",
viper.GetInt("queue.max_track_duration")))
if viper.GetInt("queue.max_track_duration") == 0 ||
t.GetDuration() <= maxTrackDuration {
q.Queue = append(q.Queue, Track{})
copy(q.Queue[i+1:], q.Queue[i:])
q.Queue[i] = t
} else {
q.mutex.Unlock()
return errors.New("The track is too long to add to the queue")
}
if len(q.Queue) == beforeLen+1 {
q.mutex.Unlock()
q.playIfNeeded()
return nil
}
q.mutex.Unlock()
return errors.New("Could not add track to queue")
}
