using System.Collections;
using System.Collections.Generic;
using System.IO;
using Thousandto.Launcher.ExternalLibs;
using UnityEngine;
using UnityEngine.Video;
using AppManager = UnityEngine.Gonbest.MagicCube.AppManager;

#if FUNCELL_LAUNCHER
using MyRuntimePlatform = Thousandto.Launcher.Logic.MyRuntimePlatform;
using LauncherManager = Thousandto.Launcher.Logic.LauncherManager;
#endif

public class VideoRootScript : MonoBehaviour
{

    #region//组件
    private Camera _camera = null;
    private Transform _mask = null;
    private VideoPlayer _videoPlayer = null;
    private AudioSource _audioSource = null;
    #endregion

    #region//私有变量
    private bool _isInit = false;
    private string _url = "http//xxxxxxxxxxxxxx";
    private string _fileName = string.Empty;
    private string _ext = "mp4";
    private OnPreparedCall _preparedCallBack = null;
    private OnFinishCall _finishCallBack = null;
    private List<string> _fileNames = new List<string>();
    //texture缓存
    private Dictionary<string, Texture> _texCache = new Dictionary<string, Texture>();
    #endregion

    #region//const
    private const int TEXTURE_COUNT = 4;
    private const string TEX_MASK_0 = "tex_logininback_3";
    private const string TEX_MASK_1 = "tex_logininback";
    private const string TEX_MASK_2 = "tex_logininback_1";
    private const string TEX_MASK_3 = "tex_logininback_2";
    #endregion

    #region//delegate
    //视频准备完成回调
    public delegate void OnPreparedCall();
    //视频播放完毕回调
    public delegate void OnFinishCall();
    #endregion

    #region//私有函数
    private void Initialize()
    {
        if (!_isInit)
        {
            if (_camera == null)
                _camera = transform.Find("Camera_Video").GetComponent<Camera>();
            _mask = transform.Find("Camera_Video/Mask");
            _videoPlayer = RequireComponent<VideoPlayer>(_camera.gameObject);
            _audioSource = RequireComponent<AudioSource>(_camera.gameObject);
            _videoPlayer.playOnAwake = false;
            _videoPlayer.errorReceived += PlayErrorRecived;
            _videoPlayer.aspectRatio = VideoAspectRatio.Stretch;
            _audioSource.playOnAwake = false;
            _mask.gameObject.SetActive(false);
            Renderer rd = _mask.GetComponent<Renderer>();
            if (rd != null)
            {
                rd.sharedMaterial = null;
            }
            _videoPlayer.source = VideoSource.Url;
            _isInit = true;
        }
    }

    private void UnInitialize()
    {
        _videoPlayer.errorReceived -= PlayErrorRecived;
        _videoPlayer = null;
        Destroy(_camera.GetComponent<VideoPlayer>());
        _isInit = false;
    }

    //判断文件是否在apk中
    private bool IsFileInApk(string relationPath)
    {
        return AppManager.Instance.AssetInApp(relationPath); 
    }

    private T RequireComponent<T>(GameObject go) where T : Component
    {
        if (go == null)
            return default(T);
        T t = go.GetComponent<T>();
        if (t == null)
        {
            t = go.AddComponent<T>();
        }
        return t;
    }
    #endregion

    #region //静态函数

    //准备视频
    public static void PreVideo(string name, OnPreparedCall preparedCallBack = null, OnFinishCall finishCall = null, bool isShowMask = false, bool isLoop = false, VideoPlayExt extType = VideoPlayExt.Mp4)
    {
        var videoRoot = GameObject.Find("[VideoRoot]");
        VideoRootScript videoScript = null;
        if (!videoRoot)
        {
            var asset = Resources.Load("Default/System/VideoRoot");
            videoRoot = GameObject.Instantiate(asset) as GameObject;
            videoRoot.name = "[VideoRoot]";
            if (videoRoot != null)
            {
                GameObject.DontDestroyOnLoad(videoRoot);
            }
        }
        videoScript = videoRoot.GetComponent<VideoRootScript>();
        if (videoScript == null)
        {
            videoRoot.AddComponent<VideoRootScript>();
        }
        videoScript.PrepareVideo("video_login", preparedCallBack, finishCall, isShowMask, isLoop, extType);
    }

    public static void PlayVideo(string name, OnPreparedCall preparedCallBack = null, OnFinishCall finishCall = null, bool isShowMask = false, bool isLoop = false, VideoPlayExt extType = VideoPlayExt.Mp4)
    {
        var videoRoot = GameObject.Find("[VideoRoot]");
        VideoRootScript videoScript = null;
        if (!videoRoot)
        {
            var asset = Resources.Load("Default/System/VideoRoot");
            videoRoot = GameObject.Instantiate(asset) as GameObject;
            videoRoot.name = "[VideoRoot]";
            if (videoRoot != null)
            {
                GameObject.DontDestroyOnLoad(videoRoot);
            }
        }
        videoScript = videoRoot.GetComponent<VideoRootScript>();
        if (videoScript == null)
        {
            videoRoot.AddComponent<VideoRootScript>();
        }
        videoScript.Play("video_login", preparedCallBack, finishCall, isShowMask, isLoop, extType);
    }
    #endregion

    #region//公共函数
    /// <summary>
    /// 准备视频
    /// </summary>
    /// <param name="name"></param>
    /// <param name="preparedCallBack"></param>
    /// <param name="finishCall"></param>
    /// <param name="isShowMask"></param>
    /// <param name="isLoop"></param>
    /// <param name="extType"></param>
    public void PrepareVideo(string name, OnPreparedCall preparedCallBack = null, OnFinishCall finishCall = null, bool isShowMask = false, bool isLoop = false, VideoPlayExt extType = VideoPlayExt.Mp4)
    {
        if (string.IsNullOrEmpty(name))
            return;
        _fileName = name;
        _preparedCallBack = preparedCallBack;
        _finishCallBack = finishCall;
        Initialize();
        if (isShowMask)
        {
            ShowMaskTexture();
        }
        else
        {
            _mask.gameObject.SetActive(false); 
        }
        _videoPlayer.isLooping = isLoop;
        SetExtName(extType);
        Prepare(name);
    }

    /// <summary>
    /// 
    /// </summary>
    /// <param name="name">视频名字</param>
    /// <param name="type">播放类型</param>
    /// <param name="extType">视频格式</param>
    /// <param name="preparedCallBack">视频准备成功回调</param>
    /// <param name="finishCall">视频播放完毕成功回调</param>
    /// <param name="isShowMask">是否显示背景遮罩</param>
    public void Play(string name, OnPreparedCall preparedCallBack = null, OnFinishCall finishCall = null, bool isShowMask = false, bool isLoop = false, VideoPlayExt extType = VideoPlayExt.Mp4)
    {
        if (string.IsNullOrEmpty(name))
            return;
        _fileName = name;
        _preparedCallBack = preparedCallBack;
        _finishCallBack = finishCall;
        Initialize();
        if (isShowMask)
        {
            ShowMaskTexture();
        }
        else
        {
            _mask.gameObject.SetActive(false);
        }
        _mask.gameObject.SetActive(false);
        _videoPlayer.isLooping = isLoop;
        SetExtName(extType);
        PlayLocal(name);
    }

    public void StopVideo()
    {
        if (_videoPlayer != null)
        {
            _videoPlayer.Stop();
            //隐藏视频播放节点
            _preparedCallBack = null;
            _finishCallBack = null;
            UnInitialize();
            gameObject.SetActive(false);
        }
    }

    public bool IsPlaying()
    {
        if (_videoPlayer != null)
        {
            return _videoPlayer.isPlaying;
        }
        return false;
    }

    //点击跳过
    public void Skip()
    {
        //停止视频播放
        if (_videoPlayer != null)
        {
            _videoPlayer.Stop();
        }
        //隐藏视频播放节点
        _preparedCallBack = null;
        _finishCallBack = null;
        gameObject.SetActive(false);
    }
    #endregion

    #region//私有函数
    //播放在线视频
    private void PlayOline(string name)
    {
        string url = FixOnlineUrl(name);
        if (string.IsNullOrEmpty(url))
        {
            return;
        }
        StartCoroutine(playVideo(url));
    }

    //播放本地视频
    private void PlayLocal(string name)
    {
        string path = IsExitVideoFile(name);
        if (string.IsNullOrEmpty(path))
        {
            //本地视频不存在 播放online视频
            PlayOline(name);
        }
        else
        {
            string url = FixLocalUrl(path);
            if (!gameObject.activeSelf)
                gameObject.SetActive(true);
            StartCoroutine(playVideo(url));
        }
    }

    private void Prepare(string name)
    {
        string url = string.Empty;
        string path = IsExitVideoFile(name);
        if (string.IsNullOrEmpty(path))
        {
            //本地视频不存在
            url = FixOnlineUrl(name);
            if (string.IsNullOrEmpty(url))
            {
                return;
            }
        }
        else
        {
            url = FixLocalUrl(path);
            if (!gameObject.activeSelf)
                gameObject.SetActive(true);
        }
        StartCoroutine(PrepareVideo(url));
    }

    //判断视频文件是否存在
    private string IsExitVideoFile(string name)
    {
        string ret = string.Empty;
        string streamingPath = string.Empty;
#if FUNCELL_LAUNCHER
        //获取当前平台
        MyRuntimePlatform runtimePlatform = LauncherManager.Instance.Data.RuntimePlatform;
        switch (runtimePlatform)
        {
            case MyRuntimePlatform.Standalone:
            case MyRuntimePlatform.AndroidEditor:
            case MyRuntimePlatform.IOSEditor:
            case MyRuntimePlatform.StandaloneEditor:
                streamingPath = Application.streamingAssetsPath;
                ret = string.Format("{0}/Assets/GameAssets/Resources/Video/{1}{2}", streamingPath, name, _ext);
                if (!System.IO.File.Exists(ret))
                {
                    ret = string.Empty;
                }
                return ret;
            case MyRuntimePlatform.IOS:
            case MyRuntimePlatform.Android:
                streamingPath = string.Format("{0}/StreamingAssets", Application.persistentDataPath);
                ret = string.Format("{0}/Assets/GameAssets/Resources/Video/{1}{2}", streamingPath, name, _ext);
                if (!System.IO.File.Exists(ret))
                {
                    ret = string.Empty;
                }
                if (string.IsNullOrEmpty(ret))
                {
                    //从apk中查找是否存在该文件
                    string relationPath = string.Format("Assets/GameAssets/Resources/Video/{0}{1}", name, _ext);
                    if (IsFileInApk(relationPath))
                    {
                        streamingPath = Application.streamingAssetsPath;
                        ret = string.Format("{0}/Assets/GameAssets/Resources/Video/{1}{2}", streamingPath, name, _ext);
                    }
                }
                break;
            default:
                break;
        }
#else
        streamingPath = Application.dataPath;
        ret = string.Format("{0}/GameAssets/Resources/Video/{1}{2}", streamingPath, name, _ext);
        if (!System.IO.File.Exists(ret))
        {
            ret = string.Empty;
        }
#endif
        return ret;
    }

    private string FixOnlineUrl(string name)
    {
        string ret = string.Format("{0}/{1}", _url, name);
        return ret;
    }
    private string FixLocalUrl(string path)
    {
        ////判断视频本地文件是否存在
        return path.Replace(@"\", "/");
    }

    private string FixTexturePath(string name)
    {
        //string lan =UnityEngine.Gonbest.MagicCube.FLanguage.Default;

        string ret = string.Format("GameAssets/Resources/Texture/UI/CH/{0}", name);
        return ret;
    }
    //private void OnGUI()
    //{
    //    GUIStyle style = new GUIStyle
    //    {
    //        border = new RectOffset(10, 10, 10, 10),
    //        fontSize = 25,
    //        fontStyle = FontStyle.BoldAndItalic,
    //    };
    //    // normal:Rendering settings for when the component is displayed normally.
    //    style.normal.textColor = new Color(200 / 255f, 180 / 255f, 150 / 255f);    // 需要除以255，因为范围是0-1
    //    //GUI.Label(new Rect(100, 100, 200, 80), , style);
    //}

    private void SetExtName(VideoPlayExt extType)
    {
        switch (extType)
        {
            case VideoPlayExt.Mov:
                _ext = ".mov";
                break;
            case VideoPlayExt.Mpg:
                _ext = ".mpg";
                break;
            case VideoPlayExt.Mpeg:
                _ext = ".mpeg";
                break;
            case VideoPlayExt.Mp4:
                _ext = ".mp4";
                break;
            case VideoPlayExt.Avi:
                _ext = ".avi";
                break;
            case VideoPlayExt.Asf:
                _ext = ".asf";
                break;
        }
    }

    //播放错误回调
    private void PlayErrorRecived(VideoPlayer vp, string msg)
    {
        if (!string.IsNullOrEmpty(msg))
        {
            UnityEngine.Debug.LogError("播放错误播放错误播放错误播放错误播放错误播放错误播放错误");
            if (_preparedCallBack != null)
            {
                _preparedCallBack();
                _preparedCallBack = null;
            }
            if (_finishCallBack != null)
            {
                _finishCallBack();
                _finishCallBack = null;
            }
        }
    }

    //准备视频
    private IEnumerator PrepareVideo(string url)
    {
        _videoPlayer.url = url;
        _videoPlayer.renderMode = VideoRenderMode.CameraFarPlane;
        _videoPlayer.audioOutputMode = VideoAudioOutputMode.AudioSource;

        _videoPlayer.controlledAudioTrackCount = 1;
        _videoPlayer.SetTargetAudioSource(0, _audioSource);


        //这里一定要让以上工作完成后才能开始准备videoPlayer
        _videoPlayer.Prepare();

        while (!_videoPlayer.isPrepared)
        {
            //Debug.Log("Preparing Video");
            yield return null;
        }
        if (_preparedCallBack != null)
        {
            _preparedCallBack();
            _preparedCallBack = null;
            gameObject.SetActive(false);
        }
    }

    private IEnumerator playVideo(string url)
    {
        if (string.Equals(_videoPlayer.url, url))
        {
            //判断视频是否准备好了
            if (_videoPlayer.isPrepared)
            {
                _videoPlayer.Play();
                _audioSource.enabled = true;
                //视频播放成功了隐藏mask
                //_mask.gameObject.SetActive(false);
                yield return null;
                //等待一帧开始播放声音
                //_audioSource.enabled = true;
                _audioSource.Play();
                _mask.gameObject.SetActive(false);
            }
        }
        else
        {
            //走正常播放流程
            _videoPlayer.url = url;
            _videoPlayer.renderMode = VideoRenderMode.CameraFarPlane;
            _videoPlayer.audioOutputMode = VideoAudioOutputMode.AudioSource;

            //_videoPlayer.EnableAudioTrack(0, true);
            _videoPlayer.controlledAudioTrackCount = 1;
            _videoPlayer.SetTargetAudioSource(0, _audioSource);


            //这里一定要让以上工作完成后才能开始准备videoPlayer
            _videoPlayer.Prepare();

            while (!_videoPlayer.isPrepared)
            {
                //Debug.Log("Preparing Video");
                yield return null;
            }
            _videoPlayer.Play();
            //_audioSource.enabled = false;
            //视频播放成功了隐藏mask
            //_mask.gameObject.SetActive(false);
            //yield return null;
            //等待一帧开始播放声音
            _audioSource.enabled = true;
            _audioSource.Play();
            if (_preparedCallBack != null)
            {
                _preparedCallBack();
                _preparedCallBack = null;
            }
            _mask.gameObject.SetActive(false);
        }
    }

    //显示背景mask遮挡texture
    private void ShowMaskTexture()
    {
        string name = string.Empty;
        int random = Random.Range(0, TEXTURE_COUNT);
        switch (random)
        {
            case 0:
                name = TEX_MASK_0;
                break;
            case 1:
                name = TEX_MASK_1;
                break;
            case 2:
                name = TEX_MASK_2;
                break;
            case 3:
                name = TEX_MASK_3;
                break;
        }
        Texture tex = GetTextureFromCache(name);
        if (tex != null)
        {
            Renderer rd = _mask.GetComponent<Renderer>();
            if (rd != null)
            {
                if (rd.sharedMaterial == null)
                {
                    Shader sh = PrefabAssetRuntimeUtil.FindShader("Unlit/Transparent Colored");
                    rd.sharedMaterial = new Material(sh);
                }
                rd.sharedMaterial.mainTexture = tex;
            }
            _mask.gameObject.SetActive(true);
        }
    }

    //从缓存中获取背景texture
    private Texture GetTextureFromCache(string name)
    {
        Texture tex = null;
        if (_texCache.ContainsKey(name))
        {
            tex = _texCache[name];
        }
        else
        {
            //加载texture
            tex = LoadTexture(name);
            _texCache.Add(name, tex);
        }
        return tex;
    }

    //加载mask 图片
    private Texture LoadTexture(string name)
    {
        Texture tex = null;
        //获取当前平台
        string path = FixTexturePath(name);
        string streamingPath = string.Empty;
        string filePath = string.Empty;
#if FUNCELL_LAUNCHER
        MyRuntimePlatform runtimePlatform = LauncherManager.Instance.Data.RuntimePlatform;
        switch (runtimePlatform)
        {
            case MyRuntimePlatform.Standalone:
            case MyRuntimePlatform.AndroidEditor:
            case MyRuntimePlatform.IOSEditor:
            case MyRuntimePlatform.StandaloneEditor:
                filePath = string.Format("{0}/{1}.jpg", Application.dataPath, path);
                //创建文件流
                FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
                fileStream.Seek(0, SeekOrigin.Begin);
                //创建文件长度的缓冲区
                byte[] bytes = new byte[fileStream.Length];
                //读取文件
                fileStream.Read(bytes, 0, (int)fileStream.Length);
                //释放文件读取liu
                fileStream.Close();
                fileStream.Dispose();
                fileStream = null;

                //创建Texture
                int width = 1136;
                int height = 640;
                Texture2D texture2D = new Texture2D(width, height);
                texture2D.LoadImage(bytes);
                //texture2D.Resize(1136, 640);
                tex = texture2D;
                break;
            case MyRuntimePlatform.IOS:
            case MyRuntimePlatform.Android:
                //判断图片是否在转移目录里面
                streamingPath = string.Format("{0}/StreamingAssets", Application.persistentDataPath);
                filePath = string.Format("{0}/Assets/{1}.unity3d", streamingPath, path);
                if (!File.Exists(filePath))
                {
                    //如果不在转移目录里面 那么从apk中读取
                    string relationPath = path;
                    if (IsFileInApk(relationPath))
                    {
                        streamingPath = Application.streamingAssetsPath;
                        filePath = string.Format("{0}/Assets/{1}", streamingPath, path);
                    }
                    else
                    {
                        filePath = string.Empty;
                    }
                }
                if (!string.IsNullOrEmpty(filePath))
                {
                    AssetBundle ab = AssetBundle.LoadFromFile(filePath);
                    tex = (Texture)ab.LoadAsset(name);
                }
                break;
            default:
                break;
        }
#else
        filePath = string.Format("{0}/{1}.jpg", Application.dataPath, path);
        //创建文件流
        FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
        fileStream.Seek(0, SeekOrigin.Begin);
        //创建文件长度的缓冲区
        byte[] bytes = new byte[fileStream.Length];
        //读取文件
        fileStream.Read(bytes, 0, (int)fileStream.Length);
        //释放文件读取liu
        fileStream.Close();
        fileStream.Dispose();
        fileStream = null;

        //创建Texture
        int width = 1136;
        int height = 640;
        Texture2D texture2D = new Texture2D(width, height);
        texture2D.LoadImage(bytes);
        //texture2D.Resize(1136, 640);
        tex = texture2D;
#endif
        return tex;
    }

    private void Update()
    {
        if (_videoPlayer != null && _videoPlayer.isPrepared)
        {
            if ((ulong)_videoPlayer.frame >= _videoPlayer.frameCount)
            {
                if (!_videoPlayer.isLooping)
                {
                    //当前播放的视频已经播放完毕了
                    //隐藏视频播放节点
                    if (_finishCallBack != null)
                    {
                        _finishCallBack();
                        _finishCallBack = null;
                        gameObject.SetActive(false);
                    }
                }
            }
        }
    }

    //设置相机depth
    public void SetCamraDepth(float d)
    {
        if (_camera != null)
        {
            _camera.depth = d;
        }
    }

    #endregion
}