using UnityEngine;
using UnityEditor;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System;
using System.Text.RegularExpressions;
using UnityEngine.Rendering;
using LitJson;

namespace WeChatWASM
{
    /// <summary>
    /// 脚本调用的话可修改 Assets/WX-WASM-SDK/Editor/MiniGameConfig.asset配置，然后调用WXEditorWindow 的 DoExport方法导出小游戏
    /// </summary>
    public class WXEditorWindow : EditorWindow
    {

        string projectName = "";
        string appid = "";
        string cdn = "";
        string videoUrl = "";
        public static string dst = "";
        string streamCDN = "";
        int bundleHashLength = 32;
        string bundlePathIdentifier = "StreamingAssets;";
        string bundleExcludeExtensions = "json;";
        string preloadFiles = ""; // 预下载文件名, 以,分隔文件
        // string audioPrefix = "";
        bool useAudioApi = false;
        bool useFriendRelation = false;
        bool developBuild = false;
        bool autoProfile = false;
        bool scriptOnly = false;
        bool profilingFuncs = false;
        bool profilingMemory = false;
        bool deleteStreamingAssets = true;
        int assetLoadType = 0; // 首包资源加载方式
        bool webgl2 = false;

        int orientation = 0;

        static string SDKFilePath = "";

        public static WXEditorScriptObject config;

        public static string webglDir = "webgl"; //导出的webgl目录
        public static string miniGameDir = "minigame"; // 生成小游戏的目录
        public static string audioDir = "Assets"; //音频资源目录
        public string codeMd5 = "";
        public string dataMd5 = "";
        public string dataFileSize = "";
        public Texture tex;
        public string defaultImgSrc = "Assets/WX-WASM-SDK/wechat-default/images/background.jpg";
        public string bgImageSrc = "";
        public int memorySize = 0;
        public bool hideAfterCallMain = true;

        public string dataFileSubPrefix = "";
        public int maxStorage = 200;
        public int defaultReleaseSize = 31457280;
        public int texturesHashLength = 8;
        public string texturesPath = "Assets/Textures";
        public bool needCacheTextures = false;
        public int loadingBarWidth = 240;
        public bool needCheckUpdate = false;

        [MenuItem("微信小游戏 / 转换小游戏", false, 1)]
        public static void Open()
        {

#if !(UNITY_2018_1_OR_NEWER)
            UnityEngine.Debug.LogError("目前仅支持 Unity2018及以上的版本！");
#endif
            var win = GetWindow(typeof(WXEditorWindow), false, "转换微信小游戏", true);//创建窗口
            win.minSize = new Vector2(650, 800);
            win.maxSize = new Vector2(1600, 950);
            win.Show();
            // 打开面板时自动检查更新
            PluginUpdateManager.CheckUpdte();
            Init();
        }
 
        public static void Init() {

            PlayerSettings.WebGL.threadsSupport = false;
            PlayerSettings.runInBackground = false;
 
            PlayerSettings.WebGL.compressionFormat = WebGLCompressionFormat.Disabled;
#if UNITY_2020_1_OR_NEWER
            PlayerSettings.WebGL.template = "PROJECT:WXTemplate2020";
#else
            PlayerSettings.WebGL.template = "PROJECT:WXTemplate";
#endif


            PlayerSettings.WebGL.linkerTarget = WebGLLinkerTarget.Wasm;

            PlayerSettings.WebGL.dataCaching = false;


#if UNITY_2021_2_OR_NEWER
            PlayerSettings.WebGL.debugSymbolMode = WebGLDebugSymbolMode.Embedded;
#else
			PlayerSettings.WebGL.debugSymbols = true;
#endif


            EditorSettings.spritePackerMode = SpritePackerMode.AlwaysOnAtlas;

        }

        public void OnEnable()
        {
            Init();
            LoadData();
            UpdateGraphicAPI();
        }


        public void LoadData() {

            SDKFilePath = Path.Combine(Application.dataPath, "WX-WASM-SDK", "wechat-default", "unity-sdk", "index.js");
            config = UnityUtil.GetEditorConf();
            projectName = config.ProjectConf.projectName;
            appid = config.ProjectConf.Appid;
            cdn = config.ProjectConf.CDN;
            assetLoadType = config.ProjectConf.assetLoadType;
            videoUrl = config.ProjectConf.VideoUrl;
            orientation = (int)config.ProjectConf.Orientation;
            dst = config.ProjectConf.DST;
            // streamCDN = config.ProjectConf.StreamCDN;
            bundleHashLength = config.ProjectConf.bundleHashLength;
            bundlePathIdentifier = config.ProjectConf.bundlePathIdentifier;
            bundleExcludeExtensions = config.ProjectConf.bundleExcludeExtensions;
            preloadFiles = config.ProjectConf.preloadFiles;
            developBuild = config.CompileOptions.DevelopBuild;
            autoProfile = config.CompileOptions.AutoProfile;
            scriptOnly = config.CompileOptions.ScriptOnly;
            profilingFuncs = config.CompileOptions.profilingFuncs;
            profilingMemory = config.CompileOptions.ProfilingMemory;
            deleteStreamingAssets = config.CompileOptions.DeleteStreamingAssets;
            webgl2 = config.CompileOptions.Webgl2;
            useAudioApi = config.SDKOptions.UseAudioApi;
            // audioPrefix = config.ProjectConf.AssetsUrl;
            useFriendRelation = config.SDKOptions.UseFriendRelation;
            bgImageSrc = config.ProjectConf.bgImageSrc;
            tex = AssetDatabase.LoadAssetAtPath<Texture>(bgImageSrc);
            memorySize = config.ProjectConf.MemorySize;
            hideAfterCallMain = config.ProjectConf.HideAfterCallMain;

            // 不常用配置，先只通过MiniGameConfig.assets修改
            dataFileSubPrefix = config.ProjectConf.dataFileSubPrefix;
            maxStorage = config.ProjectConf.maxStorage;
            defaultReleaseSize = config.ProjectConf.defaultReleaseSize;
            texturesHashLength = config.ProjectConf.texturesHashLength;
            texturesPath = config.ProjectConf.texturesPath;
            needCacheTextures = config.ProjectConf.needCacheTextures;
            loadingBarWidth = config.ProjectConf.loadingBarWidth;
            needCheckUpdate = config.ProjectConf.needCheckUpdate;
        }

        private void OnFocus()
        {
            LoadData();
        }

        private void OnDisable()
        {
            EditorUtility.SetDirty(config);
        }

        private void OnLostFocus() {

            config.ProjectConf.projectName = projectName;
            config.ProjectConf.Appid = appid;
            config.ProjectConf.CDN = cdn;
            config.ProjectConf.assetLoadType = assetLoadType;
            config.ProjectConf.VideoUrl = videoUrl;
            config.ProjectConf.Orientation = (WXScreenOritation)orientation;
            config.ProjectConf.DST = dst;
            // config.ProjectConf.StreamCDN = streamCDN;
            config.ProjectConf.bundleHashLength = bundleHashLength;
            config.ProjectConf.bundlePathIdentifier = bundlePathIdentifier;
            config.ProjectConf.bundleExcludeExtensions = bundleExcludeExtensions;
            config.ProjectConf.preloadFiles = preloadFiles;
            config.CompileOptions.DevelopBuild = developBuild;
            config.CompileOptions.AutoProfile = autoProfile;
            config.CompileOptions.ScriptOnly = scriptOnly;
            config.CompileOptions.profilingFuncs = profilingFuncs;
            config.CompileOptions.ProfilingMemory = profilingMemory;
            config.CompileOptions.DeleteStreamingAssets = deleteStreamingAssets;
            config.CompileOptions.Webgl2 = webgl2;
            config.SDKOptions.UseAudioApi = useAudioApi;
            // config.ProjectConf.AssetsUrl = audioPrefix;
            config.SDKOptions.UseFriendRelation = useFriendRelation;
            config.ProjectConf.bgImageSrc = bgImageSrc;
            config.ProjectConf.MemorySize = memorySize;
            config.ProjectConf.HideAfterCallMain = hideAfterCallMain;

            config.ProjectConf.dataFileSubPrefix = dataFileSubPrefix;
            config.ProjectConf.maxStorage = maxStorage;
            config.ProjectConf.defaultReleaseSize = defaultReleaseSize;
            config.ProjectConf.texturesHashLength = texturesHashLength;
            config.ProjectConf.texturesPath = texturesPath;
            config.ProjectConf.needCacheTextures = needCacheTextures;
            config.ProjectConf.loadingBarWidth = loadingBarWidth;
            config.ProjectConf.needCheckUpdate = needCheckUpdate;
        }


        static string[] GetScenePaths()
        {
            List<string> scenes = new List<string>();
            for (int i = 0; i < EditorBuildSettings.scenes.Length; i++)
            {
                var scene = EditorBuildSettings.scenes[i];
                UnityEngine.Debug.LogFormat("[Builder] Scenes [{0}]: {1}, [{2}]", i, scene.path, scene.enabled ? "x" : " ");

                if (scene.enabled)
                {
                    scenes.Add(scene.path);
                }
            }

            return scenes.ToArray();
        }

        private int Build()
        {
            PlayerSettings.WebGL.emscriptenArgs = "";
            PlayerSettings.runInBackground = false;
            if (memorySize != 0)
            {
                if (memorySize >= 1024)
                {
                    UnityEngine.Debug.LogErrorFormat($"memorySize必须小于1024，请查看GIT文档<a href=\"https://github.com/wechat-miniprogram/minigame-unity-webgl-transform/blob/main/Design/OptimizationMemory.md\">优化Unity WebGL的内存</a>");
                    return -1;
                }
                PlayerSettings.WebGL.emscriptenArgs += $" -s TOTAL_MEMORY={memorySize}MB";
            }
            if (profilingMemory)
            {
                PlayerSettings.WebGL.emscriptenArgs += " --memoryprofiler ";
            }
            if (profilingFuncs)
            {
#if !(UNITY_2021_2_OR_NEWER)
                PlayerSettings.WebGL.emscriptenArgs += " --profiling-funcs";
#else
                PlayerSettings.WebGL.debugSymbolMode = WebGLDebugSymbolMode.Embedded;
#endif
            }


            UnityEngine.Debug.Log("[Builder] Starting to build WebGL project ... ");

            UnityEngine.Debug.Log("PlayerSettings.WebGL.emscriptenArgs : "+ PlayerSettings.WebGL.emscriptenArgs);

            // PlayerSettings.WebGL.memorySize = memorySize;


            BuildOptions option = BuildOptions.None;

            if (developBuild)
            {
                option |= BuildOptions.Development;
            }
            if (autoProfile)
            {
                option |= BuildOptions.ConnectWithProfiler;
            }

            if (scriptOnly)
            {
                option |= BuildOptions.BuildScriptsOnly;
            }


            if (EditorUserBuildSettings.activeBuildTarget != BuildTarget.WebGL)
            {
                UnityEngine.Debug.LogFormat("[Builder] Current target is: {0}, switching to: {1}", EditorUserBuildSettings.activeBuildTarget, BuildTarget.WebGL);
                if (!EditorUserBuildSettings.SwitchActiveBuildTarget(BuildTargetGroup.WebGL, BuildTarget.WebGL))
                {
                    UnityEngine.Debug.LogFormat("[Builder] Switching to {0}/{1} failed!", BuildTargetGroup.WebGL, BuildTarget.WebGL);
                    return -1;
                }
            }

            var projDir = Path.Combine(dst, webglDir);

            var result = BuildPipeline.BuildPlayer(GetScenePaths(), projDir, BuildTarget.WebGL, option);
            if (result.summary.result != UnityEditor.Build.Reporting.BuildResult.Succeeded)
            {
                UnityEngine.Debug.LogFormat($"[Builder] BuildPlayer failed. emscriptenArgs:%s", PlayerSettings.WebGL.emscriptenArgs);
                return -1;
            }

            UnityEngine.Debug.LogFormat("[Builder] Done: " + projDir);
            return 0;

        }

        private static bool CopyDirectory(string SourcePath, string DestinationPath, bool overwriteexisting)
        {
            bool ret = false;
            var separator = Path.DirectorySeparatorChar;
            var ignoreFiles = new List<string>() { "unityNamespace.js" };
            // eventEmitter - 改名为event-emitter
            // loading和libs 是可交互视频用到的文件，先下掉可交互方案
            var ignoreDirs = new List<string>() { "eventEmitter", "loading", "libs" };
            try
            {

                if (Directory.Exists(SourcePath))
                {
                    if (Directory.Exists(DestinationPath) == false)
                    {
                        Directory.CreateDirectory(DestinationPath);
                    } else
                    {
                        // 已经存在，删掉目录下无用的文件
                        foreach(string filename in ignoreFiles)
                        {
                            var filepath = Path.Combine(DestinationPath, filename);
                            if (File.Exists(filepath))
                            {
                                File.Delete(filepath);
                            }
                        }
                        foreach(string dir in ignoreDirs)
                        {
                            var dirpath = Path.Combine(DestinationPath, dir);
                            if (Directory.Exists(dirpath))
                            {
                                Directory.Delete(dirpath);
                            }
                        }
                    }

                    foreach (string fls in Directory.GetFiles(SourcePath))
                    {

                        FileInfo flinfo = new FileInfo(fls);
                        if (flinfo.Extension == ".meta" || ignoreFiles.Contains(flinfo.Name))
                        {
                            continue;
                        }

                        flinfo.CopyTo(Path.Combine(DestinationPath, flinfo.Name), overwriteexisting);




                    }
                    foreach (string drs in Directory.GetDirectories(SourcePath))
                    {
                        DirectoryInfo drinfo = new DirectoryInfo(drs);
                        if (ignoreDirs.Contains(drinfo.Name))
                        {
                            continue;
                        }
                        if (CopyDirectory(drs, Path.Combine(DestinationPath, drinfo.Name), overwriteexisting) == false)
                            ret = false;
                    }
                }
                ret = true;
            }
            catch (Exception ex)
            {
                ret = false;
                UnityEngine.Debug.LogError(ex);
            }
            return ret;
        }

        private static bool CopyMusicDirectory(string SourcePath, string DestinationPath, bool overwriteexisting)
        {
            bool ret = false;
            try
            {

                if (Directory.Exists(SourcePath))
                {


                    foreach (string fls in Directory.GetFiles(SourcePath))
                    {

                        FileInfo flinfo = new FileInfo(fls);
                        string[] suffix = { ".wav",".mp3", "m4a", "aac", "mp4" };
                        if (Array.IndexOf(suffix, flinfo.Extension.ToLower())>-1) {
                            UnityUtil.CreateDir(DestinationPath);
                            flinfo.CopyTo(Path.Combine(DestinationPath, flinfo.Name), overwriteexisting);
                        }

                    }
                    foreach (string drs in Directory.GetDirectories(SourcePath))
                    {
                        DirectoryInfo drinfo = new DirectoryInfo(drs);
                        if (CopyMusicDirectory(drs, Path.Combine(DestinationPath, drinfo.Name), overwriteexisting) == false)
                            ret = false;
                    }
                }
                ret = true;
            }
            catch (Exception ex)
            {
                ret = false;
                UnityEngine.Debug.LogError(ex);
            }
            return ret;

        }

        private void ConvertCode()
        {

            UnityEngine.Debug.LogFormat("[Converter] Starting to adapt framewor. Dst: " + dst);

            UnityUtil.DelectDir(Path.Combine(dst, miniGameDir));

#if UNITY_2020_1_OR_NEWER
			string text = File.ReadAllText(Path.Combine(dst, webglDir, "Build", "webgl.framework.js"), Encoding.UTF8);
#else
            string text = File.ReadAllText(Path.Combine(dst, webglDir, "Build", "webgl.wasm.framework.unityweb"), Encoding.UTF8);
#endif
            int i;
            for (i = 0; i < ReplaceRules.rules.Length; i++)
            {
                var rule = ReplaceRules.rules[i];
                text = Regex.Replace(text, rule.old, rule.newStr);
            }
            if (PlayerSettings.WebGL.exceptionSupport == WebGLExceptionSupport.None)
            {
                Rule[] rules = {
                    new Rule()
                    {
                        old = "console.log\\(\"Exception at",
                         newStr= "if(Module.IsWxGame);console.log(\"Exception at"
                    },
                    new Rule()
                    {
                        old = "throw ptr",
                        newStr = "if(Module.IsWxGame)window.WXWASMSDK.WXUncaughtException(true);else throw ptr"
                    },
                };
                foreach (var rule in rules)
                {
                    text = Regex.Replace(text, rule.old, rule.newStr);
                }
            }
            if (text.Contains("UnityModule"))
            {
                text += ";GameGlobal.unityNamespace.UnityModule = UnityModule;";
            }
            else
            {
                if (text.StartsWith("(") && text.EndsWith(")"))
                {
                    text = text.Substring(1, text.Length - 2);
                }
                text = "GameGlobal.unityNamespace.UnityModule = " + text;
            }

            if (!Directory.Exists(Path.Combine(dst, miniGameDir)))
            {
                Directory.CreateDirectory(Path.Combine(dst, miniGameDir));
            }

            File.WriteAllText(Path.Combine(dst, miniGameDir, "webgl.wasm.framework.unityweb.js"), text, new UTF8Encoding(false));



            UnityEngine.Debug.LogFormat("[Converter]  adapt framework done! ");


        }
        /// <summary>
        /// 删掉导出目录webgl目录下旧资源包
        /// </summary>
        private void RemoveOldAssetPackage(string dstDir)
        {
            try
            {
                
                if (Directory.Exists(dstDir))
                {
                    foreach (string path in Directory.GetFiles(dstDir))
                    {
                        FileInfo fileInfo = new FileInfo(path);
                        if (fileInfo.Name.Contains("webgl.data.unityweb.bin.txt"))
                        {
                            File.Delete(fileInfo.FullName);
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                UnityEngine.Debug.LogError(ex);
            }
        }
        /// <summary>
        /// 等brotli之后，统计下资源包加brotli压缩后代码包是否超过了20M（小游戏代码分包总大小限制）
        /// </summary>
        private void checkNeedCopyDataPackage(bool brotliError)
        {
            // 如果brotli失败，使用CDN加载
            if (brotliError) {
                // brotli失败后，因为无法知道wasmcode大小，则得不到最终小游戏总包体大小。不能使用小游戏分包加载资源，还原成cdn的方式。
                if (assetLoadType == 1) {
                    UnityEngine.Debug.LogWarning("brotli失败，无法检测文件大小，请上传资源文件到CDN");
                    assetLoadType = 0;
                }
                ShowNotification(new GUIContent("Brotli压缩失败，请到转出目录手动压缩！！！"));
            }
            if ((assetLoadType == 1))
            {
#if UNITY_2020_1_OR_NEWER
                var dataPath = Path.Combine(dst, webglDir, "Build", "webgl.data");
#else
                var dataPath = Path.Combine(dst, webglDir, "Build", "webgl.data.unityweb");
#endif
                var brcodePath = Path.Combine(dst, miniGameDir, "wasmcode", codeMd5 + ".webgl.wasm.code.unityweb.wasm.br");
                var brcodeInfo = new FileInfo(brcodePath);
                var brcodeSize = brcodeInfo.Length;
                if (brcodeSize + int.Parse(dataFileSize) > 20971520)
                {
                    ShowNotification(new GUIContent("资源文件过大，不适宜用代码分包加载"));
                    throw new Exception("资源文件过大，不适宜用代码分包加载");
                } else
                {
                    File.Copy(dataPath, Path.Combine(dst, miniGameDir, "data-package", dataMd5 + ".webgl.data.unityweb.bin.txt"), true);
                }
            }
            var loadDataFromCdn = assetLoadType == 0;
            Rule[] rules =
            {
                new Rule()
                {
                    old="$DEPLOY_URL",
                    newStr= cdn
                },
                new Rule()
                {
                    old="$LOAD_DATA_FROM_SUBPACKAGE",
                    newStr = loadDataFromCdn ? "false" : "true"
                }
            };
            string[] files = { "game.js", "game.json", "project.config.json" };
            ReplaceFileContent(files, rules);
        }

        public int GenerateBinFile(bool isFromConvert = false)
        {
            UnityEngine.Debug.LogFormat("[Converter] Starting to genarate md5 and copy files");

#if UNITY_2020_1_OR_NEWER
			var codePath = Path.Combine(dst, webglDir, "Build", "webgl.wasm");
#else
            var codePath = Path.Combine(dst, webglDir, "Build", "webgl.wasm.code.unityweb");
#endif
	        codeMd5 = UnityUtil.BuildFileMd5(codePath);

#if UNITY_2020_1_OR_NEWER
			var dataPath = Path.Combine(dst, webglDir, "Build", "webgl.data");
#else
            var dataPath = Path.Combine(dst, webglDir, "Build", "webgl.data.unityweb");
#endif
	        dataMd5 = UnityUtil.BuildFileMd5(dataPath);

#if UNITY_2020_1_OR_NEWER
			var symbolPath = Path.Combine(dst, webglDir, "Build", "webgl.symbols.json");
#else
            var symbolPath = Path.Combine(dst, webglDir, "Build", "webgl.wasm.symbols.unityweb");
#endif

            RemoveOldAssetPackage(Path.Combine(dst, webglDir));
            RemoveOldAssetPackage(Path.Combine(dst, webglDir+"-min"));

            File.Copy(dataPath, Path.Combine(dst, webglDir, dataMd5 + ".webgl.data.unityweb.bin.txt"), true);

            CopyDirectory(Path.Combine(Application.dataPath, "WX-WASM-SDK", "wechat-default"), Path.Combine(dst, miniGameDir), true);

            // FIX: 2021.2版本生成symbol有bug，导出时生成symbol报错，有symbol才copy
            // 代码分包需要symbol文件以进行增量更新
            if (File.Exists(symbolPath)) {
                File.Copy(symbolPath, Path.Combine(dst, miniGameDir, "webgl.wasm.symbols.unityweb"), true);
            }

            var info = new FileInfo(dataPath);
            dataFileSize = info.Length.ToString();

            UnityEngine.Debug.LogFormat("[Converter] that to genarate md5 and copy files ended");

            ModifyWeChatConfigs(isFromConvert);

            ModifySDKFile();

            ClearFriendRelationCode();

            if (useAudioApi) {
                CopyMusicDirectory(Application.dataPath, Path.Combine(dst, webglDir ,audioDir), true);
            }
            // 如果没有StreamingAssets目录，默认生成
            if (!Directory.Exists(Path.Combine(dst, webglDir, "StreamingAssets"))) {
                Directory.CreateDirectory(Path.Combine(dst, webglDir, "StreamingAssets"));
            }
            return Brotlib(codePath);

        }

        private void ModifySDKFile()
        {
            var config = UnityUtil.GetEditorConf();
            string content = File.ReadAllText(SDKFilePath, Encoding.UTF8);
            content = content.Replace("$unityVersion$", Application.unityVersion);

            File.WriteAllText(Path.Combine(dst, miniGameDir, "unity-sdk", "index.js"), content, Encoding.UTF8);

            content = File.ReadAllText(Path.Combine(Application.dataPath, "WX-WASM-SDK", "wechat-default", "unity-sdk", "storage.js"), Encoding.UTF8);

            var PreLoadKeys = config.PlayerPrefsKeys.Count > 0 ? JsonMapper.ToJson(config.PlayerPrefsKeys) : "[]";

            content = content.Replace("\"$PreLoadKeys\"", PreLoadKeys);

            File.WriteAllText(Path.Combine(dst, miniGameDir, "unity-sdk", "storage.js"), content, Encoding.UTF8);

            //修改纹理dxt
            content = File.ReadAllText(Path.Combine(Application.dataPath, "WX-WASM-SDK", "wechat-default", "unity-sdk", "texture.js"), Encoding.UTF8);

            content = content.Replace("\"$UseDXT5$\"", config.CompressTexture.useDXT5 ? "true" : "false");

            File.WriteAllText(Path.Combine(dst, miniGameDir, "unity-sdk", "texture.js"), content, Encoding.UTF8);

        }

        class PreloadFile
        {
            public PreloadFile(string fn, string rp)
            {
                fileName = fn;
                relativePath = rp;
            }
            public string fileName;
            public string relativePath;
        };
        /// <summary>
        /// 从webgl目录模糊搜索preloadfiles中的文件，作为预下载的列表
        /// </summary>
        private string GetPreloadList(string strPreloadfiles)
        {

            if (strPreloadfiles == "")
            {
                return "";
            }
            string preloadList = "";
            var streamingAssetsPath = Path.Combine(dst, webglDir + "/StreamingAssets");
            var fileNames = strPreloadfiles.Split(new char[] { ';' });
            List<PreloadFile> preloadFiles = new List<PreloadFile>();
            foreach(var fileName in fileNames)
            {
                if (fileName.Trim() == "") continue;
                preloadFiles.Add(new PreloadFile(fileName, ""));
            }
             
            if (Directory.Exists(streamingAssetsPath))
            {
                foreach (string path in Directory.GetFiles(streamingAssetsPath, "*", SearchOption.AllDirectories))
                {
                    FileInfo fileInfo = new FileInfo(path);
                    foreach (var preloadFile in preloadFiles)
                    {
                        if (fileInfo.Name.Contains(preloadFile.fileName))
                        {
                            // 相对于StreamingAssets的路径
                            var relativePath = path.Substring(streamingAssetsPath.Length + 1).Replace('\\', '/');
                            preloadFile.relativePath = relativePath;
                            break;
                        }
                    }
                }
            }
            else
            {
                UnityEngine.Debug.LogError("没有找到StreamingAssets目录， 无法生成预下载列表");
            }
            foreach (var preloadFile in preloadFiles)
            {
                if (preloadFile.relativePath == "")
                {
                    UnityEngine.Debug.LogError($"并非所有预下载的文件都被找到，剩余：{preloadFile.fileName}");
                    continue;
                }
                preloadList += ("\"" + preloadFile.relativePath + "\", \r");
            }
            return preloadList;
        }

        public string HandleLoadingImage()
        {
            var info = AssetDatabase.LoadAssetAtPath<Texture>(bgImageSrc);
            var oldFilename = Path.GetFileName(defaultImgSrc);
            var newFilename = Path.GetFileName(bgImageSrc);
            if (bgImageSrc != defaultImgSrc)
            {
                // 图片宽高不能超过2048
                if (info.width > 2048 || info.height > 2048)
                {
                    throw new Exception("封面图宽高不可超过2048");
                }
                File.Delete(Path.Combine(dst, miniGameDir, "images", oldFilename));
                File.Copy(bgImageSrc, Path.Combine(dst, miniGameDir, "images", newFilename), true);
                return "images/" + Path.GetFileName(bgImageSrc);
            } else
            {
                return "images/" + Path.GetFileName(defaultImgSrc);
            }
        }

        public void ModifyWeChatConfigs(bool isFromConvert = false)
        {
            UnityEngine.Debug.LogFormat("[Converter] Starting to modify configs");

            var config = UnityUtil.GetEditorConf();

            var PRELOAD_LIST = GetPreloadList(preloadFiles);
            var imgSrc = HandleLoadingImage();

            var bundlePathIdentifierStr = GetArrayString(bundlePathIdentifier);
            var excludeFileExtensionsStr = GetArrayString(bundleExcludeExtensions);

            var screenOrientation = new List<string>(){"portrait", "landscape", "landscapeLeft", "landscapeRight"}[orientation];

            Rule[] replaceArrayList =
            {
                new Rule()
                {
                    old="$GAME_NAME",
                    newStr="webgl"
                },
                new Rule()
                {
                    old="$PROJECT_NAME",
                    newStr=projectName == "" ? "webgl" : projectName,
                },
                new Rule()
                {
                    old="$APP_ID",
                    newStr=appid
                },
                new Rule()
                {
                    old="$ORIENTATION",
                    newStr=screenOrientation
                },
                new Rule()
                {
                    old="$LOADING_VIDEO_URL",
                    newStr=videoUrl
                },
                new Rule()
                {
                    old="$CODE_MD5",
                    newStr=codeMd5
                },
                new Rule()
                {
                    old="$DATA_MD5",
                    newStr=dataMd5
                },
                // new Rule()
                // {
                //     old="$DATA_FILE_SIZE",
                //     newStr=dataFileSize
                // },
                new Rule()
                {
                    old="$STREAM_CDN",
                    newStr=streamCDN
                },
                new Rule()
                {
                    old="$AUDIO_PREFIX",
                    newStr=cdn + "/Assets"
                },

                new Rule()
                {
                    old="\"$PRELOAD_LIST\"",
                    newStr=PRELOAD_LIST
                },
                new Rule()
                {
                    old="$BACKGROUND_IMAGE",
                    newStr=imgSrc
                },
                new Rule()
                {
                    old="$HIDE_AFTER_CALLMAIN",
                    newStr = hideAfterCallMain ? "true" : "false"
                },
                new Rule()
                {
                    old="$BUNDLE_HASH_LENGTH",
                    newStr=bundleHashLength.ToString()
                },
                new Rule()
                {
                    old="$BUNDLE_PATH_IDENTIFIER",
                    newStr=bundlePathIdentifierStr
                },
                new Rule()
                {
                    old="$EXCLUDE_FILE_EXTENSIONS",
                    newStr=excludeFileExtensionsStr
                },
                new Rule()
                {
                    old="$WEBGL_VERSION",
                    newStr=webgl2? "2" : "1"
                },
                new Rule()
                {
                    old="$UNITY_VERSION",
                    newStr=Application.unityVersion
                },
                new Rule()
                {
                    old="$PLUGIN_VERSION",
                    newStr=WXPluginVersion.pluginVersion
                },
                new Rule()
                {
                    old="$DATA_FILE_SUB_PREFIX",
                    newStr=dataFileSubPrefix
                },
                new Rule()
                {
                    old="$MAX_STORAGE_SIZE",
                    newStr=maxStorage.ToString()
                },
                new Rule()
                {
                    old="$DEFAULT_RELEASE_SIZE",
                    newStr=defaultReleaseSize.ToString()
                },
                new Rule()
                {
                    old="$TEXTURE_HASH_LENGTH",
                    newStr=texturesHashLength.ToString()
                },
                new Rule()
                {
                    old="$TEXTURES_PATH",
                    newStr=texturesPath
                },
                new Rule()
                {
                    old="$NEED_CACHE_TEXTURES",
                    newStr=needCacheTextures ? "true" : "false"
                },
                new Rule()
                {
                    old="$LOADING_BAR_WIDTH",
                    newStr=loadingBarWidth.ToString()
                },
                new Rule()
                {
                    old="$NEED_CHECK_UPDATE",
                    newStr=needCheckUpdate ? "true" : "false"
                }
            };

            List<Rule> replaceList = new List<Rule>(replaceArrayList);
            List<string> files = new List<string> { "game.js", "game.json", "project.config.json", "unity-namespace.js" };



            ReplaceFileContent(files.ToArray(), replaceList.ToArray());




            UnityEngine.Debug.LogFormat("[Converter] that to modify configs ended");



        }
        /// <summary>
        /// 对文件做内容替换
        /// </summary>
        /// <param name="files"></param>
        /// <param name="replaceList"></param>
        public void ReplaceFileContent(string[] files, Rule[] replaceList)
        {
            if (files.Length != 0 && replaceList.Length != 0)
            {
                for (int i = 0; i < files.Length; i++)
                {
                    var filePath = Path.Combine(dst, miniGameDir, files[i]);
                    string text = File.ReadAllText(filePath, Encoding.UTF8);
                    for (int j = 0; j < replaceList.Length; j++)
                    {
                        var rule = replaceList[j];
                        text = text.Replace(rule.old, rule.newStr);
                    }
                    File.WriteAllText(filePath, text, new UTF8Encoding(false));
                }
            }
        }

        /// <summary>
        /// 按;分隔字符串，将分隔后每一项作为字符串用,连接
        /// eg: input "i1;i2;i3" => output: `"i1", "i2", "i3"`
        /// </summary>
        /// <param name="inp"></param>
        public string GetArrayString(string inp) {
            var result = "";
            var iterms = new List<string>(inp.Split(new char[] {';'}));
            iterms.ForEach((iterm) => {
                if (!string.IsNullOrEmpty(iterm.Trim())) {
                    result += ("\"" + iterm.Trim() + "\", ");
                }
            });
            if (!string.IsNullOrEmpty(result)) {
                result = result.Substring(0, result.Length - 2);
            }
            return result;
        }

        private int Brotlib(string filePath)
        {
            UnityEngine.Debug.LogFormat("[Converter] Starting to generate Brotlib file");


            var exePath = "";
            var path = "";
#if UNITY_EDITOR_OSX
            exePath = Path.Combine(Application.dataPath, "WX-WASM-SDK/Editor/Brotli/macos/brotli");
#else
            exePath = Path.Combine(Application.dataPath, "WX-WASM-SDK/Editor/Brotli/win_x86_64/brotli.exe");
#endif
            var dstPath = Path.Combine(dst, miniGameDir, "wasmcode", codeMd5 + ".webgl.wasm.code.unityweb.wasm.br");
            WeChatWASM.UnityUtil.RunCmd(exePath, string.Format($" --force --quality 11" +
                    $" --input {filePath}" +
                    $" --output {dstPath}"), path);
            return 0;
        }

        /// <summary>
        /// 如果没有使用好友关系链的话，自动删掉无用代码
        /// </summary>
        private void ClearFriendRelationCode()
        {
            if (!useFriendRelation)
            {
                var filePath = Path.Combine(dst, miniGameDir, "game.json");

                string content = File.ReadAllText(filePath, Encoding.UTF8);
                content = content.Replace("\"openDataContext\": \"open-data\",", "");
                File.WriteAllText(filePath, content);

                string openDataDir = Path.Combine(dst, miniGameDir, "open-data");

                UnityUtil.DelectDir(openDataDir);

                Directory.Delete(openDataDir, true);
            }

        }

        public static void DrawProObjectField<T>(
             GUIContent label,
             SerializedProperty value,
             Type objType,
             GUIStyle style,
             bool allowSceneObjects,
             Texture objIcon = null) where T : UnityEngine.Object
        {

            T tObj = value.objectReferenceValue as T;

            if (objIcon == null)
            {
                objIcon = EditorGUIUtility.FindTexture("PrefabNormal Icon");
            }
            style.imagePosition = ImagePosition.ImageLeft;

            int pickerID = 455454425;

            if (tObj != null)
            {
                EditorGUILayout.LabelField(label,
                    new GUIContent(tObj.name, objIcon), style);
            }

            if (GUILayout.Button("Select"))
            {
                EditorGUIUtility.ShowObjectPicker<T>(
                    tObj, allowSceneObjects, "", pickerID);

            }
            if (Event.current.commandName == "ObjectSelectorUpdated")
            {
                if (EditorGUIUtility.GetObjectPickerControlID() == pickerID)
                {
                    tObj = EditorGUIUtility.GetObjectPickerObject() as T;
                    value.objectReferenceValue = tObj;
                }
            }

        }


        private void OnGUI()
        {
            var labelStyle = new GUIStyle(EditorStyles.boldLabel);
            labelStyle.fontSize = 14;

            labelStyle.margin.left = 20;
            labelStyle.margin.top = 10;
            labelStyle.margin.bottom = 10;

            GUILayout.Label("基本设置", labelStyle);

            var inputStyle = new GUIStyle(EditorStyles.textField);
            inputStyle.fontSize = 14;
            inputStyle.margin.left = 20;
            inputStyle.margin.bottom = 10;
            inputStyle.margin.right = 20;

            var intPopupStyle = new GUIStyle(EditorStyles.popup);
            intPopupStyle.fontSize = 14;
            intPopupStyle.margin.left = 20;
            intPopupStyle.margin.bottom = 15;
            intPopupStyle.margin.right = 20;

            appid = EditorGUILayout.TextField("游戏appid", appid, inputStyle);
            cdn = EditorGUILayout.TextField("游戏资源CDN", cdn, inputStyle);
            projectName = EditorGUILayout.TextField("小游戏项目名", projectName, inputStyle);
            orientation = EditorGUILayout.IntPopup("游戏方向", orientation, new[] { "Portrait", "Landscape", "LandscapeLeft", "LandscapeRight" }, new[] { 0, 1, 2, 3 }, intPopupStyle);
            var totalMemoryFieldDesc = new GUIContent("最大内存(MB)", "预留的初始内存值，需评估游戏最大内存峰值进行设置，消除内存自动增长带来的峰值尖刺。请查看GIT文档<优化Unity WebGL的内存>");
            memorySize = EditorGUILayout.IntField(totalMemoryFieldDesc, memorySize, inputStyle);

            GUILayout.Label("导出路径", labelStyle);

            var choosePathButtonClicked = false;
            var openTargetButtonClicked = false;
            var resetButtonClicked = false;

            if (dst == "")
            {
                GUIStyle pathButtonStyle = new GUIStyle(GUI.skin.button);
                pathButtonStyle.fontSize = 12;
                pathButtonStyle.margin.left = 20;

                choosePathButtonClicked = GUILayout.Button("选择导出路径", pathButtonStyle, GUILayout.Height(30), GUILayout.Width(200));
            }
            else
            {

                int pathButtonHeight = 28;
                GUIStyle pathLabelStyle = new GUIStyle(GUI.skin.textField);
                pathLabelStyle.fontSize = 12;
                pathLabelStyle.alignment = TextAnchor.MiddleLeft;
                pathLabelStyle.margin.top = 6;
                pathLabelStyle.margin.bottom = 6;
                pathLabelStyle.margin.left = 20;

                GUILayout.BeginHorizontal();
                // 路径框
                GUILayout.Label(dst, pathLabelStyle, GUILayout.Height(pathButtonHeight - 6), GUILayout.ExpandWidth(true), GUILayout.MaxWidth(EditorGUIUtility.currentViewWidth - 126));
                openTargetButtonClicked = GUILayout.Button("打开", GUILayout.Height(pathButtonHeight), GUILayout.Width(40));
                resetButtonClicked = GUILayout.Button("重选", GUILayout.Height(pathButtonHeight), GUILayout.Width(40));
                GUILayout.EndHorizontal();
            }
            EditorGUILayout.Space();

            GUILayout.Label("启动Loader设置", labelStyle);
            EditorGUILayout.BeginHorizontal();
            GUILayout.Space(20);
            tex = (Texture)EditorGUILayout.ObjectField("启动背景图/视频封面", tex, typeof(Texture2D), false);
            var currentBgSrc = AssetDatabase.GetAssetPath(tex);
            TextureImporter texInfo = (TextureImporter)AssetImporter.GetAtPath(currentBgSrc);
            if (!string.IsNullOrEmpty(currentBgSrc) && currentBgSrc != bgImageSrc)
            {
                bgImageSrc = currentBgSrc;
                var config = UnityUtil.GetEditorConf();
                config.ProjectConf.bgImageSrc = bgImageSrc;
                EditorUtility.SetDirty(config);
                AssetDatabase.SaveAssets();
            }
            GUILayout.Space(20);
            EditorGUILayout.EndHorizontal();

            videoUrl = EditorGUILayout.TextField("加载阶段视频url", videoUrl, inputStyle);

            var optionsList = new List<GUIContent>();
            optionsList.Add(new GUIContent("CDN"));
            optionsList.Add(new GUIContent("小游戏分包"));
            GUIContent assetLoadTypeLabel = new GUIContent("首包资源加载方式", "选择'CDN'通过传统CDN加载资源。选择'小游戏分包'通过小游戏代码分包加载资源。小游戏分包有总大小20M限制，若资源加代码总大小超过20M，会自动切换为传统CDN加载");

            assetLoadType = EditorGUILayout.IntPopup(assetLoadTypeLabel, assetLoadType, optionsList.ToArray(), new[] { 0, 1 }, intPopupStyle);

            // audioPrefix = EditorGUILayout.TextField("Assets目录对应CDN地址", audioPrefix, inputStyle);

            // memorySize = EditorGUILayout.IntField("游戏内存大小（MB）", memorySize, inputStyle);

            // EditorGUILayout.Space();

            // GUILayout.Label("AssetBundle缓存配置", labelStyle);

            // streamCDN = EditorGUILayout.TextField("Bundle包CDN地址", streamCDN, inputStyle);
            // var bundlePathFieldDesc = new GUIContent("路径标识符(;分隔)", "下载路径中包含标识符可判定为下载Bundle，可自动缓存。默认值StreamingAssets");
            // bundlePathIdentifier = EditorGUILayout.TextField(bundlePathFieldDesc, bundlePathIdentifier, inputStyle);

            var bundleExcludeExtensionsFieldDesc = new GUIContent("不自动缓存文件类型(;分隔)", "当请求url包含资源'cdn+StreamingAssets'时会自动缓存，但StreamingAssets目录下不是所有文件都需缓存，此选项配置不需要自动缓存的文件拓展名。默认值json");
            bundleExcludeExtensions = EditorGUILayout.TextField(bundleExcludeExtensionsFieldDesc, bundleExcludeExtensions, inputStyle);

            var bundleHashLengthFieldDesc = new GUIContent("Bundle名中Hash长度", "自定义Bundle文件名中hash部分长度，默认值32，用于缓存控制。");
            bundleHashLength = EditorGUILayout.IntField(bundleHashLengthFieldDesc, bundleHashLength, inputStyle);

            EditorGUILayout.Space();

            GUILayout.Label("预下载选项", labelStyle);
            GUILayout.BeginHorizontal();
            preloadFiles = EditorGUILayout.TextField("文件列表(;间隔，模糊匹配)", preloadFiles, inputStyle);

            GUILayout.EndHorizontal();

            EditorGUILayout.Space();

            GUIStyle toggleStyle = new GUIStyle(GUI.skin.toggle);
            toggleStyle.margin.left = 20;
            toggleStyle.margin.right = 20;

            GUILayout.Label("SDK功能选项", labelStyle);
            GUILayout.BeginHorizontal();
            useFriendRelation = GUILayout.Toggle(useFriendRelation, "使用好友关系链", toggleStyle);
            useAudioApi = GUILayout.Toggle(useAudioApi, "使用微信音频API", toggleStyle);
            GUILayout.EndHorizontal();
            EditorGUILayout.Space();




            EditorGUILayout.Space();
            EditorGUILayout.Space();

            GUILayout.Label("调试编译选项", labelStyle);
            GUILayout.BeginHorizontal();

            developBuild = GUILayout.Toggle(developBuild, "Development Build",toggleStyle);
            autoProfile = GUILayout.Toggle(autoProfile, "Autoconnect Profiler", toggleStyle);
            scriptOnly = GUILayout.Toggle(scriptOnly, "Scripts Only Build", toggleStyle);

            GUILayout.EndHorizontal();
            GUILayout.BeginHorizontal();

            profilingFuncs = GUILayout.Toggle(profilingFuncs, "Profiling Funcs       ", toggleStyle);
            profilingMemory = GUILayout.Toggle(profilingMemory, "Profiling Memory     ", toggleStyle);

       
            var oldwebgl2 = webgl2;
            webgl2 = GUILayout.Toggle(webgl2, "WebGL2.0(beta)", toggleStyle);
            if (oldwebgl2 != webgl2) UpdateGraphicAPI();
            GUILayout.EndHorizontal();
            EditorGUILayout.Space();

            deleteStreamingAssets = GUILayout.Toggle(deleteStreamingAssets, "ClearStreamingAssets", toggleStyle);
        

            GUIStyle exportButtonStyle = new GUIStyle(GUI.skin.button);
            exportButtonStyle.fontSize = 14;
            exportButtonStyle.margin.left = 20;
            exportButtonStyle.margin.top = 40;

            EditorGUILayout.BeginHorizontal();


            var isExportBtnPressed = GUILayout.Button("导出WEBGL并转换为小游戏(常用)", exportButtonStyle, GUILayout.Height(40), GUILayout.Width(EditorGUIUtility.currentViewWidth - 270));

            var isConvertBtnPressed = GUILayout.Button("将WEBGL转为小游戏(不常用)", exportButtonStyle, GUILayout.Height(40), GUILayout.Width(210));

            EditorGUILayout.EndHorizontal();


            if (isExportBtnPressed)
            {

                DoExport(true);

            }

            if (isConvertBtnPressed)
            {
                DoExport(false);
            }

            if (choosePathButtonClicked)
            {
                // 弹出选目录窗口
                var dstPath = EditorUtility.SaveFolderPanel("选择你的游戏导出目录", "", "");

                if (dstPath != "")
                {
                    dst = dstPath;
                    OnLostFocus();
                }


            }

            if (openTargetButtonClicked)
            {
                UnityUtil.ShowInExplorer(dst);
            }
            if (resetButtonClicked)
            {
                dst = "";
            }


            EditorGUILayout.Space();

        }

        private void UpdateGraphicAPI()
        {
            PlayerSettings.SetUseDefaultGraphicsAPIs(BuildTarget.WebGL, false);

            GraphicsDeviceType[] targets = new GraphicsDeviceType[] { };
            if (webgl2)
            {
                PlayerSettings.SetGraphicsAPIs(BuildTarget.WebGL, new GraphicsDeviceType[] { GraphicsDeviceType.OpenGLES3 });
            }
            else
            {
                PlayerSettings.SetGraphicsAPIs(BuildTarget.WebGL, new GraphicsDeviceType[] { GraphicsDeviceType.OpenGLES2 });
            }
        }

        // 可以调用这个来集成
        public void DoExport(bool buildWebGL) {

            OnLostFocus();
            EditorUtility.SetDirty(config);
            AssetDatabase.SaveAssets();

            if (dst == "")
            {
                ShowNotification(new GUIContent("请先选择游戏导出路径"));
            }
            else
            {

#if UNITY_EDITOR_OSX
                // MacSetAuth();
#endif
                //仅删除StreamingAssets目录
                if (deleteStreamingAssets)
                {
                    UnityUtil.DelectDir(Path.Combine(dst, webglDir + "/StreamingAssets")); 
                }

                if (buildWebGL && Build() != 0)
                {
                    return;
                }

                ConvertCode();

                int res = GenerateBinFile();
                if (res == 0)
                {
                    checkNeedCopyDataPackage(false);
                    UnityEngine.Debug.LogFormat("[Converter] All done!");
                    ShowNotification(new GUIContent("转换完成"));
                }
                else
                {
                    checkNeedCopyDataPackage(true);
                }

                // 如果是2021版本，官方symbols产生有BUG，这里需要用工具将embedded的函数名提取出来
#if UNITY_2021_2_OR_NEWER
                var path = "Assets/WX-WASM-SDK/Editor/Node";
                var nodePath = "node";
#if UNITY_EDITOR_OSX
                nodePath = "/usr/local/bin/node";
#endif
                WeChatWASM.UnityUtil.RunCmd(nodePath, string.Format($"--experimental-modules dump_wasm_symbol.mjs {dst}"), path);
                UnityEngine.Debug.LogError($"Unity 2021版本使用Embeded Symbols, 代码包中含有函数名体积较大, 发布前<a href=\"https://github.com/wechat-miniprogram/minigame-unity-webgl-transform/blob/main/Design/WasmSplit.md\">使用代码分包工具</a>进行优化");
#endif

            }
        }
 

    }
}