using System;
using DG.Tweening;

namespace AibisDream.Kit
{
    public class DOTweenAction : IAction
    {
        private DOTweenAction()
        {
        }

        private static readonly SimpleObjectPool<DOTweenAction> Pool = new(() => new DOTweenAction(), null, 10);

        private Func<Tween> _tweenGetter;

        public static DOTweenAction Allocate(Func<Tween> tweenGetter)
        {
            var doTweenAction = Pool.Allocate();
            doTweenAction.ActionID = ActionKit.IDGenerator++;
            doTweenAction.IsFinalized = false;
            doTweenAction.Reset();
            doTweenAction._tweenGetter = tweenGetter;
            return doTweenAction;
        }

        private Tween _executingTween;

        public void OnStart()
        {
            _executingTween = _tweenGetter();
            _executingTween.Restart();

            var tween = _tweenGetter();
            tween.Restart();
        }

        public void OnExecute(float dt)
        {
            if (_executingTween != null && !_executingTween.IsPlaying())
            {
                this.Finish();
            }
        }

        public void OnFinish()
        {
            _executingTween = null;
        }

        public bool Paused { get; set; }

        public void Deinit()
        {
            if (!IsFinalized)
            {
                IsFinalized = true;
                if (_executingTween != null)
                {
                    if (_executingTween.IsPlaying())
                    {
                        _executingTween.Kill();
                    }
                }

                _executingTween = null;
                Pool.Recycle(this);
            }
        }

        public void Reset()
        {
            Status = ActionStatus.NotStart;
            Paused = false;
            _executingTween = null;
        }

        public bool IsFinalized { get; set; }
        public ulong ActionID { get; set; }
        public ActionStatus Status { get; set; }
    }

    public static class ActionKitDOTweenExtension
    {
        public static IAction ToAction(this Tween self)
        {
            self.Pause();
            return DOTweenAction.Allocate(() => self);
        }

        public static ISequence DOTween(this ISequence self, Func<Tween> tweenGetter)
        {
            return self.Append(DOTweenAction.Allocate(tweenGetter));
        }
    }
}