using DG.Tweening;
using UnityEngine;
using UnityEngine.Playables;

namespace FT.Timeline
{
    public class DOTweenBehaviour : PlayableBehaviour
    {
        public DOTweenClipType tweenType;
        public int variantId;
        public float tweenDuration;
        public Vector2 shakeStrength;
        public int shakeVibrato;
        public float shakeRandomness;
        public bool shakeSnapping;
        public bool shakeFadeOut;
        public ShakeRandomnessMode shakeRandomnessMode;

        private Tween _activeTween;
        private RectTransform _target;

        public override void OnBehaviourPlay(Playable playable, FrameData info)
        {
        }

        public override void OnBehaviourPause(Playable playable, FrameData info)
        {
            KillTween();
        }

        public override void OnPlayableDestroy(Playable playable)
        {
            KillTween();
        }

        public override void ProcessFrame(Playable playable, FrameData info, object playerData)
        {
            var target = playerData as RectTransform;
            if (target == null)
            {
                return;
            }

            if (!IsVariantMatched(target))
            {
                KillTween();
                return;
            }

            if (_activeTween == null || _target != target)
            {
                KillTween();
                _target = target;
                _activeTween = CreateTween(target);
            }

            if (_activeTween == null || !_activeTween.IsActive())
            {
                return;
            }

            var duration = Mathf.Max(tweenDuration, 0f);
            var localTime = duration > 0f ? Mathf.Clamp((float)playable.GetTime(), 0f, duration) : 0f;
            _activeTween.Goto(localTime, false);
        }

        private bool IsVariantMatched(RectTransform target)
        {
            var selector = target.GetComponent<DOTweenRuntimeSelector>();
            if (selector == null)
            {
                return true;
            }
            return selector.CurrentVariantId == variantId;
        }

        private Tween CreateTween(RectTransform target)
        {
            Tween tween;
            switch (tweenType)
            {
                case DOTweenClipType.ShakeAnchorPos:
                    tween = target.DOShakeAnchorPos(tweenDuration, shakeStrength, shakeVibrato, shakeRandomness,
                        shakeSnapping, shakeFadeOut, shakeRandomnessMode);
                    break;
                default:
                    return null;
            }

            return tween.SetAutoKill(false).Pause();
        }

        private void KillTween()
        {
            if (_activeTween == null)
            {
                return;
            }

            if (_activeTween.IsActive())
            {
                _activeTween.Kill();
            }

            _activeTween = null;
            _target = null;
        }
    }
}