using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using UnityEditor;
using UnityEngine;
using System.Linq;

/// <summary>
/// 配置生成器 - 用于自动生成配置管理器代码
/// </summary>
public static class ConfigGenerater
{
    // 常量定义
    private const string ConfigsPath = "Assets/Scripts/Main/Config/Configs";
    private const string ConfigManagerPath = "Assets/Scripts/Main/Config/ConfigManager.cs";
    
    private static List<string> ExcludeClassList = new List<string>()
    {
        //  特殊表格
        "InitialFunctionConfig",
        "PriorLanguageConfig",

        //  暂时无用的表
        "PlayerFacePicStarConfig",
        "PlayerFaceStarConfig",
    };

    [MenuItem("Tools/手动刷新")]
    public static void Refresh()
    {
        AssetDatabase.Refresh();
    }

    /// <summary>
    /// 生成配置管理器菜单项
    /// </summary>
    [MenuItem("Tools/生成配置管理器")]
    public static void Generate()
    {
        try
        {
            // 获取所有配置类
            List<string> configClasses = GetAllConfigClasses();

            if (System.IO.File.Exists(Path.Combine(Application.dataPath, "fastConfig.txt")))
            {
                // 如果存在 fastConfig.txt 文件，读取其中的配置类
                string[] fastConfigs = System.IO.File.ReadAllLines(Path.Combine(Application.dataPath, "fastConfig.txt"));
                ExcludeClassList.AddRange(fastConfigs);
            }

            configClasses = new List<string>(configClasses.Where(config => !ExcludeClassList.Contains(config)));

            // 生成配置管理器代码
            GenerateConfigManager(configClasses);
            
            Debug.Log($"配置管理器生成完成，共找到 {configClasses.Count} 个配置类: {string.Join(", ", configClasses)}");
            
            // 刷新资源
            AssetDatabase.Refresh();
        }
        catch (Exception ex)
        {
            Debug.LogError($"生成配置管理器时发生错误: {ex.Message}\n{ex.StackTrace}");
        }
    }
    
    /// <summary>
    /// 获取所有配置类
    /// </summary>
    /// <returns>配置类名称列表</returns>
    private static List<string> GetAllConfigClasses()
    {
        // 获取配置目录的完整路径
        string fullConfigsPath = Path.Combine(Application.dataPath, ConfigsPath.Replace("Assets/", ""));
        
        // 检查目录是否存在
        if (!Directory.Exists(fullConfigsPath))
        {
            Debug.LogError($"配置目录不存在: {fullConfigsPath}");
            return new List<string>();
        }
        
        try
        {
            List<string> configClasses = new List<string>();
            
            // 获取所有C#文件
            string[] files = Directory.GetFiles(fullConfigsPath, "*.cs", SearchOption.TopDirectoryOnly);
            
            for (int i = 0; i < files.Length; i++)
            {
                string file = files[i];
                configClasses.Add(Path.GetFileNameWithoutExtension(file));
            }
            
            return configClasses;
        }
        catch (Exception ex)
        {
            Debug.LogError($"扫描配置类时发生错误: {ex.Message}");
            return new List<string>();
        }
    }
    
    /// <summary>
    /// 生成配置管理器代码
    /// </summary>
    /// <param name="configClasses">配置类列表</param>
    private static void GenerateConfigManager(List<string> configClasses)
    {
        // 获取配置管理器的完整路径
        string fullConfigManagerPath = Path.Combine(Application.dataPath, ConfigManagerPath.Replace("Assets/", ""));
        
        try
        {
            // 生成完整的配置管理器代码
            string configManagerCode = GenerateFullConfigManagerCode(configClasses);
            
            // 写入文件
            File.WriteAllText(fullConfigManagerPath, configManagerCode);
            
            Debug.Log($"成功生成配置管理器: {fullConfigManagerPath}");
        }
        catch (Exception ex)
        {
            Debug.LogError($"生成配置管理器文件时发生错误: {ex.Message}");
        }
    }
    
    /// <summary>
    /// 生成完整的配置管理器代码
    /// </summary>
    /// <param name="configClasses">配置类列表</param>
    /// <returns>完整的配置管理器代码</returns>
    private static string GenerateFullConfigManagerCode(List<string> configClasses)
    {
        StringBuilder sb = new StringBuilder();

        // 头部命名空间
        sb.AppendLine("using System;");
        sb.AppendLine("using System.Collections.Generic;");
        sb.AppendLine("using UnityEngine;");
        sb.AppendLine("using Cysharp.Threading.Tasks;");
        sb.AppendLine("using System.Reflection;");
        sb.AppendLine();
        sb.AppendLine();
        sb.AppendLine("public class ConfigManager : ManagerBase<ConfigManager>");
        sb.AppendLine("{");
        sb.AppendLine("    public bool isLoadFinished");
        sb.AppendLine("    {");
        sb.AppendLine("        get;");
        sb.AppendLine("        private set;");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    private float loadingProgress = 0f;");
        sb.AppendLine();
        sb.AppendLine("    public override void Init()");
        sb.AppendLine("    {");
        sb.AppendLine("        base.Init();");
        sb.AppendLine("        InitConfigs();");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    public virtual async UniTask InitConfigs()");
        sb.AppendLine("    {");
        sb.AppendLine("        // 加载配置文件");
        sb.AppendLine("        await LoadConfigs();");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    protected async UniTask LoadConfigs()");
        sb.AppendLine("    {");
        sb.AppendLine("        loadingProgress = 0f;");
        sb.AppendLine("        isLoadFinished = false;");
        sb.AppendLine();
        sb.AppendLine("        // 加载配置文件");
        sb.AppendLine($"        int totalConfigs = {configClasses.Count};");
        sb.AppendLine("        List<Type> configTypes = new List<Type>() {");
        for (int i = 0; i < configClasses.Count; i++)
        {
            sb.Append($"            typeof({configClasses[i]})");
            sb.AppendLine(i < configClasses.Count - 1 ? "," : "");
        }
        sb.AppendLine("        };");
        sb.AppendLine();
        sb.AppendLine("#if UNITY_EDITOR");
        sb.AppendLine("        HashSet<Type> configHashSet = new HashSet<Type>();");
        sb.AppendLine("        if (System.IO.File.Exists(Application.dataPath + \"/fastConfig.txt\"))");
        sb.AppendLine("        {");
        sb.AppendLine("            string[] strConfgsArr = System.IO.File.ReadAllLines(Application.dataPath + \"/fastConfig.txt\");");
        sb.AppendLine("            foreach (string str in strConfgsArr)");
        sb.AppendLine("            {");
        sb.AppendLine("                Type tpy = Type.GetType(str);");
        sb.AppendLine("                configHashSet.Add(tpy);");
        sb.AppendLine("            }");
        sb.AppendLine("        }");
        sb.AppendLine("        //  编辑器下加入 评估加载时常");
        sb.AppendLine("        configTypes.AddRange(configHashSet);");
        sb.AppendLine("        List<string> fastName = new List<string>();");
        sb.AppendLine("#endif");
        sb.AppendLine("        // 逐个加载配置并更新进度");
        sb.AppendLine("        for (int i = 0; i < configTypes.Count; i++)");
        sb.AppendLine("        {");
        sb.AppendLine("            var sw = System.Diagnostics.Stopwatch.StartNew();");
        sb.AppendLine("            LoadConfigByType(configTypes[i]);");
        sb.AppendLine("            sw.Stop();");
        sb.AppendLine("#if UNITY_EDITOR");
        sb.AppendLine("            if (sw.ElapsedMilliseconds >= 100)");
        sb.AppendLine("            {");
        sb.AppendLine("                Debug.LogError($\"加载配置 {configTypes[i].Name} 耗时较长: {sw.ElapsedMilliseconds} ms\");");
        sb.AppendLine("            }");
        sb.AppendLine("            else if (sw.ElapsedMilliseconds <= 5)");
        sb.AppendLine("            {");
        sb.AppendLine("                fastName.Add(configTypes[i].Name);");
        sb.AppendLine("            }");
        sb.AppendLine("            Debug.Log($\"加载配置: {configTypes[i].Name} 用时: {sw.ElapsedMilliseconds} ms\");");
        sb.AppendLine("#endif");
        sb.AppendLine("            loadingProgress = (float)(i + 1) / totalConfigs;");
        sb.AppendLine("        }");
        sb.AppendLine("#if UNITY_EDITOR");
        sb.AppendLine("        System.IO.File.WriteAllText(Application.dataPath + \"/fastConfig.txt\", string.Join(\"\\n\", fastName));");
        sb.AppendLine();
        sb.AppendLine("        //加载完后卸载");
        sb.AppendLine("        foreach (var configType in configTypes)");
        sb.AppendLine("        {");
        sb.AppendLine("            var methodInfo = configType.GetMethod(\"ForceRelease\", System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.FlattenHierarchy);");
        sb.AppendLine("            if (methodInfo != null)");
        sb.AppendLine("            {");
        sb.AppendLine("                methodInfo.Invoke(null, null);");
        sb.AppendLine("            }");
        sb.AppendLine("        }");
        sb.AppendLine("#endif");
        sb.AppendLine();
        sb.AppendLine("        // 加载完成后设置isLoadFinished为true");
        sb.AppendLine("        loadingProgress = 1f;");
        sb.AppendLine("        isLoadFinished = true;");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    public void LoadConfigByType(Type configType)");
        sb.AppendLine("    {");
        sb.AppendLine("        string configName = configType.Name;");
        sb.AppendLine("        if (configName.EndsWith(\"Config\"))");
        sb.AppendLine("        {");
        sb.AppendLine("            configName = configName.Substring(0, configName.Length - 6);");
        sb.AppendLine("        }");
        sb.AppendLine("        string[] texts = ResManager.Instance.LoadConfig(configName);");
        sb.AppendLine("        if (texts != null)");
        sb.AppendLine("        {");
        sb.AppendLine("            string[] lines = texts;");
        sb.AppendLine("            var methodInfo = configType.GetMethod(\"Init\", System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.FlattenHierarchy);");
        sb.AppendLine("            if (methodInfo != null)");
        sb.AppendLine("            {");
        sb.AppendLine("                methodInfo.Invoke(null, new object[] { lines });");
        sb.AppendLine("                // 设置初始化标志");
        sb.AppendLine("                var isInitField = configType.GetField(\"isInit\", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);");
        sb.AppendLine("                if (isInitField != null)");
        sb.AppendLine("                {");
        sb.AppendLine("                    isInitField.SetValue(null, true);");
        sb.AppendLine("                }");
        sb.AppendLine("                Debug.Log($\"加载配置: {configType.Name} 成功\");");
        sb.AppendLine("            }");
        sb.AppendLine("            else");
        sb.AppendLine("            {");
        sb.AppendLine("                Debug.LogError($\"配置类 {configType.Name} 没有静态Init方法\");");
        sb.AppendLine("            }");
        sb.AppendLine("        }");
        sb.AppendLine("        else");
        sb.AppendLine("        {");
        sb.AppendLine("            Debug.LogError($\"找不到配置文件: {configName}\");");
        sb.AppendLine("        }");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    private async UniTask LoadConfig<T>() where T : class");
        sb.AppendLine("    {");
        sb.AppendLine("        string configName = typeof(T).Name;");
        sb.AppendLine();
        sb.AppendLine("        string[] texts = ResManager.Instance.LoadConfig(configName);");
        sb.AppendLine("        if (texts != null)");
        sb.AppendLine("        {");
        sb.AppendLine("            string[] lines = texts;");
        sb.AppendLine("            var methodInfo = typeof(T).GetMethod(\"Init\", System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static);");
        sb.AppendLine("            if (methodInfo != null)");
        sb.AppendLine("            {");
        sb.AppendLine("                methodInfo.Invoke(null, lines);");
        sb.AppendLine("                // 设置初始化标志");
        sb.AppendLine("                var isInitField = typeof(T).GetField(\"isInit\", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);");
        sb.AppendLine("                if (isInitField != null)");
        sb.AppendLine("                {");
        sb.AppendLine("                    isInitField.SetValue(null, true);");
        sb.AppendLine("                }");
        sb.AppendLine("                Debug.Log($\"加载配置: {typeof(T).Name} 成功\");");
        sb.AppendLine("            }");
        sb.AppendLine("            else");
        sb.AppendLine("            {");
        sb.AppendLine("                Debug.LogError($\"配置类 {typeof(T).Name} 没有静态Init方法\");");
        sb.AppendLine("            }");
        sb.AppendLine("        }");
        sb.AppendLine("        else");
        sb.AppendLine("        {");
        sb.AppendLine("            Debug.LogError($\"找不到配置文件: {configName}\");");
        sb.AppendLine("        }");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    public float GetLoadingProgress()");
        sb.AppendLine("    {");
        sb.AppendLine("        return loadingProgress;");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    private void ClearConfigDictionary<T>() where T : class");
        sb.AppendLine("    {");
        sb.AppendLine("        // 重置 T 初始化状态");
        sb.AppendLine("        var isInitField = typeof(T).GetField(\"isInit\", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);");
        sb.AppendLine("        if (isInitField != null)");
        sb.AppendLine("        {");
        sb.AppendLine("            isInitField.SetValue(null, false);");
        sb.AppendLine("        }");
        sb.AppendLine("    }");
        sb.AppendLine();
        sb.AppendLine("    public override void Release()");
        sb.AppendLine("    {");
        foreach (string className in configClasses)
        {
            sb.AppendLine($"        // 清空 {className} 字典");
            sb.AppendLine($"        ClearConfigDictionary<{className}>();");
        }
        sb.AppendLine("    }");
        sb.AppendLine("}");

        return sb.ToString();
    }
}