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

namespace Game
{
    public class TimelineClipPoolManager : ObjectPoolBase<TimelineClipPoolManager>
    {
        private delegate TimelineClipPoolItem EventCallbackCreate();
        private readonly Dictionary<Type, EventCallbackCreate> _dict = new Dictionary<Type, EventCallbackCreate>();
        public override void OnCreate()
        {
            Register<AnimationPlayableAsset, ClipAnimation>();
            Register<SlideClip, ClipSlide>();
            Register<BreakClip, ClipBreak>();
            Register<MovestepClip, ClipMovestep>();
            Register<AttackClip, ClipAttack>();
            Register<AttackTriggerClip, ClipAttackTrigger>();
            Register<CancelClip, ClipCancel>();
            Register<CastShadowClip, ClipCastShadow>();
            Register<EffectClip, ClipEffect>();
            Register<SubEntityClip, ClipSubEntity>();
            Register<SoundClip, ClipSound>();
            Register<FollowTargetClip, ClipFollowTarget>();
            Register<GlobalEffectClip, ClipGlobalEffect>();
            Register<DodgeClip, ClipDodge>();
            Register<LoopInAirClip, ClipLoopInAir>();
            Register<ThrowControlClip, ClipThrowControl>();
            Register<ThrowAnimationClip, ClipThrowAnimation>();
            
        }
        private void Register<T1, T2>() where T2 : TimelineClipBase, new()
        {
            _dict[typeof(T1)] = Create<T2>;
        }
        public TimelineClipPoolItem CreateByClipType(Type type, TimelineClip clip, GameEntity owner)
        {
            if (!_dict.ContainsKey(type))
            {
                Debug.Log("Unknown Clip Type:" + type);
                return null;
            }
            var ret = _dict[type]();
            ret.Clip.Create(clip, owner);
            return ret;
        }

        private TimelineClipPoolItem Create<T>() where T : TimelineClipBase, new()
        {
            var ret = Create<TimelineClipPoolItem>(typeof(T).ToString(), (item) =>
            {
                item.Clip = new T();
            });
            ret.Clip.Reset();
            return ret;
        }
    }
    public class TimelineClipPoolItem : ObjectPoolItemBase
    {
        public TimelineClipBase Clip;
    }
}