using System.Collections;

namespace AibisDream.SaveSystem
{
    /// <summary>
    /// sections["timeline"]：各 PlayableDirector 的终/初态（TimelineCenter）。
    /// 按 D1.1 只存 AtStart/AtEnd/Stopped，不存时间轴中间帧。
    /// </summary>
    public class TimelineSnapshotProvider : ISnapshotProvider
    {
        public string SaveId => SnapshotProviderIds.Timeline;
        public int RestoreOrder => 60;

        public object Capture()
        {
            return TimelineCenter.Instance.CaptureSnapshot();
        }

        public IEnumerator Restore(object dto)
        {
            if (dto is not TimelineSnapshotDto timeline)
            {
                yield break;
            }

            TimelineCenter.Instance.RestoreSnapshot(timeline);
            yield break;
        }
    }
}