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

namespace Game
{
    public class TimelineObject
    {
        public readonly List<TimelineClipPoolItem> Clips = new List<TimelineClipPoolItem>();
    }

    public class TimelineManager : ManagerBase<TimelineManager>
    {
        private const string SkillTimelinePathRoot = "Timeline/";

        public void RunSkillTimeline(GameEntity entity, string skillName)
        {
            var entityTimeline = entity.timeline.Timeline;
            var asset = EnsureGetSkillTimeline(skillName);
            double timeMax = 0;

            var clips = new List<TimelineClipPoolItem>();
            foreach (var track in asset.GetOutputTracks())
            {
                clips.Clear();
                foreach (var clip in track.GetClips())
                {
                    var clipReal =
                        TimelineClipPoolManager.Instance.CreateByClipType(clip.asset.GetType(), clip, entity);
                    if (clipReal == null)
                    {
                        continue;
                    }

                    clips.Add(clipReal);
                    if (clipReal.Clip.EndTime > timeMax)
                    {
                        timeMax = clipReal.Clip.EndTime;
                    }
                }

                //这里需要按时间排序 同类型clip时序问题
                clips.Sort((l, r) => l.Clip.EndTime.CompareTo(r.Clip.EndTime));
                entityTimeline.Clips.AddRange(clips);
            }

            entity.timeline.TimePast = 0;
            entity.timeline.TimeMax = timeMax;
            entity.timeline.IsRunning = true;
        }

        public void SetTimelineTime(GameEntity entity, float from, float to)
        {
            var timeline = entity.timeline;
            if (!timeline.IsRunning)
                return;
            if (timeline.Timeline == null)
                return;
            if (from == to)
                return;
            //往前设置 
            timeline.TimePast = to;
            if (from > to)
            {
                foreach (var clip in timeline.Timeline.Clips)
                {
                    var clipReal = clip.Clip;
                    if (clipReal.StartTime <= to && clipReal.EndTime > to)
                    {
                        clipReal.HasRun = false;
                        clipReal.IsAlive = false;
                    }

                    if (clipReal.StartTime > to && clipReal.StartTime < from)
                    {
                        clipReal.HasRun = false;
                        clipReal.IsAlive = false;
                    }
                }
            }
        }

        public void EndSkillTimeline(GameEntity entity)
        {
            var timeline = entity.timeline;
            if (timeline.Timeline != null)
            {
                foreach (var clip in timeline.Timeline.Clips)
                {
                    var clipReal = clip.Clip;
                    if (clipReal.IsAlive)
                    {
                        clipReal.OnLeave();
                    }

                    clip.Destroy();
                }

                timeline.Timeline.Clips.Clear();
            }

            timeline.IsRunning = false;
            timeline.IsPause = false;
        }

        public TimelineAsset EnsureGetSkillTimeline(string path)
        {
            var pathReal = $"{SkillTimelinePathRoot}{path}";
            return Util.Load<TimelineAsset>(pathReal);
        }
    }
}