Function getDirectionalIndex

packages/player/src/stores/queueStore.ts:44–73

(
  state: Pick<QueueStore, 'items' | 'currentIndex'>,
  direction: 'forward' | 'backward',
)

});

const getDirectionalIndex = (
  state: Pick<QueueStore, 'items' | 'currentIndex'>,
  direction: 'forward' | 'backward',
): number => {
  const { items, currentIndex } = state;
  const shuffleEnabled =
    (getSetting('core.playback.shuffle') as boolean) ?? false;
  const repeatMode = (getSetting('core.playback.repeat') as string) ?? 'off';

  if (items.length === 0) {
    return currentIndex;
  }

  if (shuffleEnabled) {
    return getShuffledIndex(items.length, currentIndex);
  }

  if (direction === 'forward') {
    if (currentIndex < items.length - 1) {
      return currentIndex + 1;
    }
    return repeatMode === 'all' ? 0 : currentIndex;
  }

  if (currentIndex > 0) {
    return currentIndex - 1;
  }

  return repeatMode === 'all' ? items.length - 1 : currentIndex;
};

const getShuffledIndex = (length: number, currentIndex: number): number => {
  if (length <= 1) {