using UnityEngine;
using System.Collections.Generic;
using DG.Tweening;
using UnityEngine.Rendering;
using System.Collections;
using AibisDream.Framework;
using UnityEngine.EventSystems;
using AibisDream.FixSystem;

namespace AibisDream
{
    public class SpriteFlashSystem : MonoBehaviour
    {
        [Header("References")]
         [SerializeField] private SpriteRenderer targetSpriteRenderer;
         [SerializeField] private SpriteRenderer backupSpriteRenderer;
         // [SerializeField] private SpriteRenderer crossFadeRenderer1;
         // [SerializeField] private SpriteRenderer crossFadeRenderer2;
       // [SerializeField] private float fadeDuration = 0.5f;
       // [SerializeField] private float crossFadeDuration = 2f;
        [SerializeField] private UnityEngine.Rendering.Volume volume1;
        
        private bool isFading = false;
        private bool isEndingMode = false;
        private DG.Tweening.Sequence currentSequence;
        private int currentEndingIndex = 0;

        private void Awake()
        {
            // 确保SpriteRenderer初始状态正确
            if (targetSpriteRenderer != null)
            {
                targetSpriteRenderer.color = new Color(1f, 1f, 1f, 0f);
                targetSpriteRenderer.enabled = false;
            }
            else
            {
                Debug.LogError("未设置目标SpriteRenderer！");
            }

            if (backupSpriteRenderer != null)
            {
                backupSpriteRenderer.color = new Color(1f, 1f, 1f, 0f);
                backupSpriteRenderer.enabled = false;
            }
            else
            {
                Debug.LogError("未设置备用SpriteRenderer！");
            }

            // if (crossFadeRenderer1 != null)
            // {
            //     crossFadeRenderer1.color = new Color(1f, 1f, 1f, 0f);
            //     crossFadeRenderer1.enabled = false;
            // }
            // else
            // {
            //     Debug.LogError("未设置交叉淡入淡出SpriteRenderer1！");
            // }

            // if (crossFadeRenderer2 != null)
            // {
            //     crossFadeRenderer2.color = new Color(1f, 1f, 1f, 0f);
            //     crossFadeRenderer2.enabled = false;
            // }
            // else
            // {
            //     Debug.LogError("未设置交叉淡入淡出SpriteRenderer2！");
            // }
        }

        public IEnumerator TriggerFlash(string imagePath, float fadeDuration = 0.2f)
        {
            if (!isFading)
            {
                string fullPath = $"CG/{imagePath}";
                Sprite flashSprite = ResourceKit.LoadAssetSync<Sprite>(fullPath);
                if (flashSprite != null)
                {
                    yield return StartFlash(flashSprite, fadeDuration);
                }
                else
                {
                    Debug.LogError($"无法加载闪回图片: {fullPath}");
                    yield break;
                }
            }
            else
            {
                Debug.Log($"无法开始闪烁：isFading={isFading}");
            }
        }

        public IEnumerator TriggerEnding(string imagePath, float fadeDuration = 2f)
        {
            if (!isFading)
            {
                string fullPath = $"CG/{imagePath}";
                Sprite endingSprite = ResourceKit.LoadAssetSync<Sprite>(fullPath);
                if (endingSprite != null)
                {
                    if (currentEndingIndex == 0)
                    {
                        yield return StartEndingFadeIn(endingSprite, 0.01f);
                    }
                    else
                    {
                        yield return StartEndingFadeIn(endingSprite, fadeDuration);
                    }
                    currentEndingIndex++;
                }
                else
                {
                    Debug.LogError($"无法加载结局图片: {fullPath}");
                }
            }
            else
            {
                Debug.Log($"无法开始闪烁：isFading={isFading}");
            }
        }

        private IEnumerator StartFlash(Sprite flashSprite, float fadeDuration = 0.5f)
        {
            targetSpriteRenderer.enabled = true;
            backupSpriteRenderer.enabled = true;
            Debug.Log("开始Sprite闪烁");
            isFading = true;
            targetSpriteRenderer.sprite = flashSprite;
            targetSpriteRenderer.color = new Color(1f, 1f, 1f, 0f);
            StartCoroutine(CameraKit.Instance.ShakeCamera(fadeDuration, 0.25f, 60));

            // 创建新的序列
            currentSequence?.Kill();
            currentSequence = DOTween.Sequence();

            // 添加淡入效果
            currentSequence.Append(targetSpriteRenderer.DOFade(1f, fadeDuration).SetEase(Ease.InOutSine));
            if (volume1 != null)
                currentSequence.Join(DOTween.To(() => volume1.weight, x => volume1.weight = x, 1f, fadeDuration).SetEase(Ease.InOutSine));

            // 添加淡出效果
            currentSequence.Append(targetSpriteRenderer.DOFade(0f, fadeDuration).SetEase(Ease.InOutSine));
            if (volume1 != null)
                currentSequence.Join(DOTween.To(() => volume1.weight, x => volume1.weight = x, 0f, fadeDuration).SetEase(Ease.InOutSine));

            // 等待序列完成
            yield return currentSequence.WaitForCompletion();

            // 完成后重置状态
            Debug.Log("闪烁效果完成");
            isFading = false;
            currentSequence = null;
            targetSpriteRenderer.enabled = false;
            backupSpriteRenderer.enabled = false;
            DialogController.Instance.StartDialogNode("闪回完成");
        }

        private IEnumerator StartEndingFadeIn(Sprite endingSprite, float fadeDuration = 2f)
        {
            isFading = true;
            targetSpriteRenderer.sprite = endingSprite;
            targetSpriteRenderer.color = new Color(1f, 1f, 1f, 0f);

            // 创建新的序列
            currentSequence?.Kill();
            currentSequence = DOTween.Sequence();

            // 添加淡入效果
            currentSequence.Append(targetSpriteRenderer.DOFade(1f, fadeDuration).SetEase(Ease.InOutSine));
            // if (volume1 != null)
            //     currentSequence.Join(DOTween.To(() => volume1.weight, x => volume1.weight = x, 1f, fadeDuration).SetEase(Ease.InOutSine));

            // 等待序列完成
            yield return currentSequence.WaitForCompletion();

            // 完成后重置状态
            isFading = false;
            currentSequence = null;
        }

        // private IEnumerator StartEndingCrossFade(Sprite endingSprite, float crossFadeDuration = 2f)
        // {
        //     isFading = true;
            
        //     // 启用交叉淡入淡出渲染器
        //     crossFadeRenderer1.enabled = true;
        //     crossFadeRenderer2.enabled = true;

        //     // 设置第一个渲染器的sprite为当前显示的图片
        //     crossFadeRenderer1.sprite = targetSpriteRenderer.sprite;
        //     crossFadeRenderer1.color = new Color(1f, 1f, 1f, 1f);

        //     // 设置第二个渲染器的sprite为新图片
        //     crossFadeRenderer2.sprite = endingSprite;
        //     crossFadeRenderer2.color = new Color(1f, 1f, 1f, 0f);

        //     // 创建新的序列
        //     currentSequence?.Kill();
        //     currentSequence = DOTween.Sequence();

        //     // 第一个渲染器淡出，同时第二个渲染器淡入
        //     currentSequence.Join(crossFadeRenderer1.DOFade(0f, crossFadeDuration).SetEase(Ease.InOutSine));
        //     currentSequence.Join(crossFadeRenderer2.DOFade(1f, crossFadeDuration).SetEase(Ease.InOutSine));

        //     // 等待序列完成
        //     yield return currentSequence.WaitForCompletion();

        //     // 更新目标渲染器的sprite
        //     targetSpriteRenderer.sprite = endingSprite;
        //     targetSpriteRenderer.color = new Color(1f, 1f, 1f, 1f);

        //     // 禁用交叉淡入淡出渲染器
        //     crossFadeRenderer1.enabled = false;
        //     crossFadeRenderer2.enabled = false;

        //     isFading = false;
        //     currentSequence = null;
        // }

        private void OnDestroy()
        {
            currentSequence?.Kill();
        }
    }
}