using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Timeline;

namespace FT.Timeline
{

    [Serializable]
#if UNITY_EDITOR
    [System.ComponentModel.DisplayName("Sibling Order Clip")]
#endif
    public class SiblingOrderPlayableAsset : PlayableAsset, ITimelineClipAsset
    {
        [Header("子物体列表 列表顺序即播放timeline之后在父物体内部的顺序")]
        [SerializeField]
        public List<ExposedReference<GameObject>> children = new List<ExposedReference<GameObject>>();

        public ClipCaps clipCaps => ClipCaps.None;

        public override Playable CreatePlayable(PlayableGraph graph, GameObject go)
        {
            var playable = ScriptPlayable<SiblingOrderBehaviour>.Create(graph);
            var behaviour = playable.GetBehaviour();

            behaviour.children = new List<GameObject>();
            var resolver = graph.GetResolver();
            foreach (var child in children)
            {
                behaviour.children.Add(child.Resolve(resolver));
            }

            return playable;
        }
    }
}