using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Video;
using UnityEngine.SceneManagement;

namespace MyInfraredInsertcoin
{
    public class StandbyVideoManager : MonoBehaviour
    {
        public RawImage videoDisplay;  // UI上的RawImage
        public VideoPlayer videoPlayer; // VideoPlayer 组件
        public GameObject uiPanel;  // UI 界面的根面板
        public float standbyTime = 180f;  // 待机时间（秒）
        public RenderTexture renderTexture;  // 用于渲染视频的 RenderTexture

        private bool isVideoPlaying = false;
        private float lastInputTime;

        // 控制外部是否启用用户输入检测
        public bool isUserInputEnabled = true;

        private bool isHomeScene = false; // 标记是否在 Home 场景

        public static StandbyVideoManager _ins;

        public static void Create()
        {
            if (_ins) return;

            GameObject o = Instantiate(Resources.Load<GameObject>("StandbyVideoManager"));
            DontDestroyOnLoad(o);
            _ins = o.GetComponent<StandbyVideoManager>();

            // 添加一个父物体
            o.transform.SetParent(ViewMgr.Instance.transform.Find("1").transform);
            CanvasScaler canvasScaler = o.GetComponent<CanvasScaler>();
            if (canvasScaler != null)
            {
                Destroy(canvasScaler);
            }
            Canvas canvas = o.GetComponent<Canvas>();
            canvas.overrideSorting = true;

            RectTransform rectTransform = o.GetComponent<RectTransform>();
            rectTransform.anchorMin = Vector2.zero;      // 左下角对齐父级
            rectTransform.anchorMax = Vector2.one;       // 右上角对齐父级
            rectTransform.offsetMin = Vector2.zero;      // 移除左下角偏移
            rectTransform.offsetMax = Vector2.zero;      // 移除右上角偏移
            rectTransform.localScale = Vector3.one;      // 确保缩放为 1

            // 激活 videoDisplay 并开始播放视频
            _ins.PlayStandbyVideo();
        }

        void Awake()
        {
            // 订阅场景加载事件
            SceneManager.sceneLoaded += OnSceneLoaded;
        }

        void OnDisable()
        {
            // 取消订阅场景加载事件
            SceneManager.sceneLoaded -= OnSceneLoaded;
        }

        private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
        {
            ResetIdleTimer();
            // 如果加载的场景是 "Home" 场景，标记为 true
            if (scene.name == "Home")
            {
                isHomeScene = true;
            }
            else
            {
                isHomeScene = false;
            }
        }

        void Start()
        {
            // 确保 RawImage 的纹理是设置为 RenderTexture
            videoDisplay.texture = renderTexture;

            // 确保 VideoPlayer 的 targetTexture 正确设置
            videoPlayer.targetTexture = renderTexture;
            videoPlayer.loopPointReached += OnVideoEnd;  // 监听视频播放完毕
            videoPlayer.isLooping = true;  // 设置视频循环播放

            // 获取视频的宽高比并应用到 AspectRatioFitter
            AspectRatioFitter aspectFitter = videoDisplay.GetComponent<AspectRatioFitter>();
            float aspectRatio = (float)videoPlayer.width / videoPlayer.height;
            aspectFitter.aspectRatio = aspectRatio;

            ResetIdleTimer();  // 初始化计时器
        }

        // 进入待机视频
        public void PlayStandbyVideo()
        {
            uiPanel.SetActive(true);  // 显示视频
            videoPlayer.Play();
            isVideoPlaying = true;
        }

        // 停止视频并重置定时器
        public void StopAndReset()
        {
            videoPlayer.Stop();
            uiPanel.SetActive(false);  // 隐藏视频
            isVideoPlaying = false;
            ResetIdleTimer();
        }

        void Update()
        {
            // 只有在 Home 场景下才检测待机时间
            if (isHomeScene)
            {
                // 判断是否达到待机时间，进入待机视频
                if (!isVideoPlaying && Time.time - lastInputTime > standbyTime)
                {
                    PlayStandbyVideo();
                }

                // 模拟调用 DetectPointerMovement 检测光标移动
                if (Input.GetAxis("Mouse X") != 0 || Input.GetAxis("Mouse Y") != 0)
                {
                    DetectPointerMovement(new Vector2(Input.mousePosition.x, Input.mousePosition.y));
                }

                // 模拟调用 SetUserInputEnabled 检测按键按下
                //if (Input.anyKeyDown)
                //{
                //    StopVideo();
                //}
            }

        }

        // 重置待机计时器
        private void ResetIdleTimer()
        {
            lastInputTime = Time.time;
        }

        // 视频播放结束后自动回到UI
        private void OnVideoEnd(VideoPlayer vp)
        {
            // 仅当视频没有被手动停止时才执行
            if (isVideoPlaying)
            {
                videoPlayer.Play();  // 重新开始播放
            }
        }

        #region 光标移动，触发关闭视频video
        private Vector2 lastPoint = Vector2.zero;  // 记录上一次光点位置
        private float movementThreshold = 10f;  // 设定的移动触发阈值

        // 检测光点（光标）移动并调用 EnableUserInput
        /// <summary>
        /// 输入当前移动的ui点
        /// </summary>
        /// <param name="currentPoint"></param>
        public void DetectPointerMovement(Vector2 currentPoint)
        {
            if (lastPoint == Vector2.zero)
            {
                lastPoint = currentPoint;  // 初始化位置
                return;
            }

            // 计算光点移动的距离
            float distance = Vector2.Distance(lastPoint, currentPoint);

            if (distance > movementThreshold)
            {
                StopVideo();
                lastPoint = currentPoint;  // 更新上次光点位置
            }
        }
        /// <summary>
        /// 外部手动调用停止视频
        /// </summary>
        public void StopVideo()
        {
            // 监听退出视频
            if (isVideoPlaying)
            {
                StopAndReset();  // 调用优化后的停止并重置函数
            }
            else {

                ResetIdleTimer();
            }
        }
        #endregion
    }
}