using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Video;
using YooAsset;
using GFGGame.Launcher;
using System.Collections;

namespace GFGGame
{
    public class UICGView : SingletonMonoBase<UICGView>
    {
        private const float VideoWidth = 1920f;
        private const float VideoHeight = 1080f;
        private GameObject _ui;
        private AssetOperationHandle handle;
        private RawFileOperationHandle videoHandle;
        private RawImage imgVideo;
        private Button BtnFullScreen;
        private Button BtnSkipVertical;
        private Button BtnSkipHorizontal;
        private VideoPlayer videoPlayer;

        public void Show()
        {
            MusicManager.Instance.Stop();
            string path = ResPathUtil.GetUUIPrefabPath("UICG");
            handle = YooAssets.LoadAssetSync<GameObject>(path);
            _ui = handle.InstantiateSync(UGUIManager.Instance.desktop.transform);
            imgVideo = _ui.transform.Find("ImgVideo").GetComponent<RawImage>();
            Vector2 imgVideoSizeDelta = imgVideo.rectTransform.sizeDelta;
            imgVideoSizeDelta.x = Screen.width;
            imgVideoSizeDelta.y = (VideoHeight / VideoWidth) * imgVideoSizeDelta.x;
            imgVideo.rectTransform.sizeDelta = imgVideoSizeDelta;
            

            BtnFullScreen = _ui.transform.Find("BtnFullScreen").GetComponent<Button>();
            RectTransform rectbtnFullScreen = BtnFullScreen.GetComponent<RectTransform>();
            Vector2 buttonSizeDelta = rectbtnFullScreen.sizeDelta;
            Vector2 anchoredPosition = rectbtnFullScreen.anchoredPosition;
            anchoredPosition.y = -imgVideoSizeDelta.y / 2 - buttonSizeDelta.y;
            rectbtnFullScreen.anchoredPosition = anchoredPosition;
            BtnFullScreen.onClick.AddListener(OnClickBtnFullScreen);


            BtnSkipVertical = _ui.transform.Find("BtnSkipVertical").GetComponent<Button>();
            RectTransform rectBtnSkipVertical = BtnSkipVertical.GetComponent<RectTransform>();
            anchoredPosition = rectBtnSkipVertical.anchoredPosition;
            anchoredPosition.y = rectbtnFullScreen.anchoredPosition.y;
            rectBtnSkipVertical.anchoredPosition = anchoredPosition;
            BtnSkipVertical.onClick.AddListener(OnClickrectBtnSkip);


            BtnSkipHorizontal = _ui.transform.Find("BtnSkipHorizontal").GetComponent<Button>();
            BtnSkipHorizontal.gameObject.SetActive(false);
            BtnSkipHorizontal.onClick.AddListener(OnClickrectBtnSkip);

            videoPlayer = _ui.transform.Find("VideoPlayer").GetComponent<VideoPlayer>();
            videoPlayer.loopPointReached += OnVideoEnded;
            videoPlayer.prepareCompleted += OnVideoPrepared;

            string assetPath = ResPathUtil.GetVideoPath("cg");
            videoHandle = YooAssets.LoadRawFileSync(assetPath);
            videoPlayer.url = videoHandle.GetRawFilePath();
            videoPlayer.Play();

            
        }

        private void OnVideoPrepared(VideoPlayer source)
        {
            videoPlayer.prepareCompleted -= OnVideoPrepared;
            StartCoroutine(FadeButtonOverTime(BtnFullScreen));
            StartCoroutine(FadeButtonOverTime(BtnSkipVertical));
            StartCoroutine(FadeButtonOverTime(BtnSkipHorizontal));
        }

        IEnumerator FadeButtonOverTime(Button btn)
        {
            Image buttonImage = btn.GetComponent<Image>();
            //Image img = btn.GetComponentInChildren<Image>();
            yield return new WaitForSeconds((float)videoPlayer.length - 3f);
            if (buttonImage != null)
            {
                // 获取初始颜色
                Color startColor = buttonImage.color;
                //Color startColorText = img.color;

                // 目标颜色，透明度设为 0
                Color targetColor = new Color(startColor.r, startColor.g, startColor.b, 0f);
                //Color targetColorText = new Color(startColorText.r, startColorText.g, startColorText.b, 0f);

                float fadeDuration = 1f;
                // 记录开始时间
                float startTime = Time.time;

                while (Time.time - startTime < fadeDuration)
                {
                    // 在一定时间内逐渐插值颜色
                    float t = (Time.time - startTime) / fadeDuration;
                    buttonImage.color = Color.Lerp(startColor, targetColor, t);
                    //img.color = Color.Lerp(startColorText, targetColorText, t);
                    yield return null; // 等待下一帧
                }

                // 设置最终颜色，确保透明度为 0
                buttonImage.color = targetColor;
                //img.color = targetColorText;
            }
        }

        private void OnVideoEnded(VideoPlayer source)
        {
            this.Hide();
        }

        private void OnClickrectBtnSkip()
        {
            Hide();
        }

        private void OnClickBtnFullScreen()
        {
            BtnSkipVertical.gameObject.SetActive(false);
            BtnSkipHorizontal.gameObject.SetActive(true);
            BtnFullScreen.gameObject.SetActive(false);
            imgVideo.rectTransform.localRotation = Quaternion.Euler(0, 0, -90);
            Vector2 imgVideoSizeDelta = imgVideo.rectTransform.sizeDelta;
            imgVideoSizeDelta.y = Screen.width;
            imgVideoSizeDelta.x = (VideoWidth / VideoHeight) * imgVideoSizeDelta.y;
            imgVideo.rectTransform.sizeDelta = imgVideoSizeDelta;
            if(videoPlayer.time <= 3)
            {
                videoPlayer.Stop();
                videoPlayer.Play();
            }
            RectTransform rectBtnSkipVertical = BtnSkipHorizontal.GetComponent<RectTransform>();
            Vector2 anchoredPosition = rectBtnSkipVertical.anchoredPosition;
            anchoredPosition.y = (Screen.height - imgVideoSizeDelta.x)/2 + rectBtnSkipVertical.sizeDelta.x/2;
            rectBtnSkipVertical.anchoredPosition = anchoredPosition;
        }

        public void Hide()
        {
            StopAllCoroutines();
            videoPlayer.Stop();
            videoPlayer.loopPointReached -= OnVideoEnded;
            handle.Release();
            handle = null;
            videoHandle.Release();
            videoHandle = null;
            GameObject.Destroy(_ui);
            _ui = null;
            StoryController.ShowLevelView(100001001);
        }
    }
}