'use strict';

const { Controller } = require('ee-core');
const { shell  } = require('electron');
const Addon = require('ee-core/addon');
const { dialog } = require('electron');
const fs = require('fs');
const path = require('path');
const CoreWindow = require('ee-core/electron/window');
const { BrowserWindow, Menu,app } = require('electron');
const { spawn } = require('child_process');
const Log = require('ee-core/log');

const { readConfigFile } = require('../utils/config');
const configDeault = readConfigFile();
const errData = {
  msg :'请求失败，请联系管理员',
  code:999
}
const sharp = require('sharp'); // 确保安装：npm install sharp


/**
 * example
 * @class
 */
class UtilsController extends Controller {

  constructor(ctx) {
    super(ctx);
  }

  /**
   * 运行外部工具（如exe）
   * @param {{exeName?: string, exePath?: string, args?: string[]}} params
   */
  async runExternalTool (params = {}) {
    try {
      const { exeName, exePath, args = [] } = params;
      const targetName = exePath || exeName;

      if (!targetName) {
        throw new Error('缺少可执行文件名称');
      }

      const isPackaged = app.isPackaged;
      const execDir = isPackaged ? path.dirname(app.getPath('exe')) : path.join(app.getAppPath(), '.');
      const resourcesDir = process.resourcesPath;
      const candidates = [];

      const pushCandidate = (candidatePath, isAbsolute = false) => {
        if (!candidatePath) return;
        const normalized = isAbsolute || path.isAbsolute(candidatePath)
          ? candidatePath
          : path.join(execDir, candidatePath);
        if (!candidates.includes(normalized)) {
          candidates.push(normalized);
        }
      };

      // 允许前端显式传入候选路径数组
      if (Array.isArray(params.candidatePaths)) {
        params.candidatePaths.forEach((p) => pushCandidate(p));
      }

      if (path.isAbsolute(targetName)) {
        pushCandidate(targetName, true);
      } else {
        if (isPackaged) {
          pushCandidate(path.join(execDir, targetName), true);
          pushCandidate(path.join(resourcesDir, targetName), true);
          pushCandidate(path.join(resourcesDir, 'extraResources', targetName), true);
        } else {
          pushCandidate(targetName);
          pushCandidate(path.join('build', 'extraResources', targetName));
          pushCandidate(path.join('extraResources', targetName));
        }
      }

      console.log('=======');
      console.log(candidates);
      const resolvedPath = candidates.find((filePath) => filePath && fs.existsSync(filePath));

      if (!resolvedPath) {
        throw new Error(`未找到工具：${targetName}`);
      }

      // 如果已经有正在运行的子进程，则先关闭旧进程，再重新启动新的（保证始终只有一个进程，同时刷新页面参数）
      if (this.app.externalToolProcess && !this.app.externalToolProcess.killed) {
        try {
          this.app.externalToolProcess.kill();
        } catch (e) {
          console.warn('关闭旧 externalTool 进程失败（忽略继续启动新进程）:', e);
        }
        this.app.externalToolProcess = null;
      }

      const child = spawn(resolvedPath, args, {
        cwd: path.dirname(resolvedPath),
        detached: true,
        stdio: 'ignore',
        windowsHide: false
      });

      // 记录子进程，方便后续复用/判断是否已退出
      this.app.externalToolProcess = child;
      child.on('exit', () => {
        if (this.app.externalToolProcess === child) {
          this.app.externalToolProcess = null;
        }
      });
      child.unref();
      return {
        code: 0,
        data: {
          path: resolvedPath,
          reused: false
        }
      };
    } catch (error) {
      console.error('runExternalTool error:', error);
      return {
        code: 1,
        msg: error.message || '运行外部工具失败'
      };
    }
  }


  /**
   * 所有方法接收两个参数
   * @param args 前端传的参数
   * @param event - ipc通信时才有值。详情见：控制器文档
   */

  /**
   * upload
   */
  async shellFun (params) {
    // 如果是打开路径操作，确保路径存在
    if (params.action === 'openMkPath') {
      try {
        // 确保目录存在，如果不存在就创建
        if (!fs.existsSync(params.params)) {
          fs.mkdirSync(params.params, { recursive: true });
        }

        shell.openPath(params.params)

        return;
      } catch (err) {
        console.error('创建目录失败:', err);
        // 即使创建目录失败，也尝试打开路径（可能已经存在）
      }
    }
    shell[params.action](params.params)
  }


  async openMain (config) {

    const { id, url } = config;

    if (this.app.electron[id]) {
      const win = this.app.electron[id];

      // 切换到指定的 URL
      await win.loadURL(url);

      win.focus();
      win.show();
      return;
    }

    const win = new BrowserWindow({
      ...config,

      webPreferences: {
        webSecurity: false,
        contextIsolation: false, // false -> 可在渲染进程中使用electron的api，true->需要bridge.js(contextBridge)
        nodeIntegration: true,
        // preload: path.join('../preload/preload.js','../preload/bridge.js'),

      },
    });
    await win.loadURL(config.url); // 设置窗口的 URL
    // 监听窗口关闭事件
    if(configDeault.debug)  win.webContents.openDevTools()
   //
    win.on('close', () => {
      delete this.app.electron[config.id]; // 删除窗口引用
    });

    this.app.electron[config.id] = win ;

  }

  setWindowClosable(payload = {}) {
    const id = payload.id
    const closable = payload.closable !== false
    const win = id && this.app.electron ? this.app.electron[id] : null
    if (!win || win.isDestroyed()) return { code: 1, msg: '窗口不存在' }
    try {
      win.setClosable(closable)
      return { code: 0 }
    } catch (error) {
      Log.error('设置窗口关闭状态失败:', error)
      return { code: 1, msg: error.message }
    }
  }

  async openDirectory(optiops={
    title:"选择文件夹"
    }){
    const filePaths = dialog.showOpenDialogSync({
      title:optiops.title || '选择文件夹',
      properties: ['openDirectory']
    })
    if(filePaths[0]) return filePaths[0];
    return filePaths
  }

  /**
   * 关闭所有子窗口
   */
  closeAllWindows() {
    try {
      // 获取所有窗口
      const windows = this.app.electron;

      // 关闭除主窗口外的所有窗口
      for (const [id, window] of Object.entries(windows)) {

        if (!['mainWindow','extra'].includes(id)) { // 保留主窗口
          try {
            window.close();
            delete this.app.electron[id];
          } catch (error) {
            console.error(`关闭窗口 ${id} 失败:`, error);
          }
        }
      }

      console.log('所有子窗口已关闭');
      return { success: true, message: '所有子窗口已关闭' };
    } catch (error) {
      console.error('关闭所有窗口失败:', error);
      return { success: false, message: '关闭所有窗口失败: ' + error.message };
    }
  }

  async openImage(
      optiops= {
        title:"选择图片",
        filters:[
          { name: '支持JPG,png,gif', extensions: ['jpg','jpeg','png'] },
        ],
      }
   ){

        const filePaths = dialog.showOpenDialogSync({
          title:optiops.title || '选择图片',
          properties:['openFile'],
          filters:optiops.filters || [
            { name: '支持JPG,png,gif', extensions: ['jpg','jpeg','png'] },
          ]
        })
        const filePath = filePaths[0];
        const fileBuffer = fs.readFileSync(filePath);
        const base64Image = fileBuffer.toString('base64');
    // 获取文件扩展名
    const extension = path.extname(filePath).toLowerCase().replace('.', '');

    // 根据扩展名确定 MIME 类型
    let mimeType = '';
    switch (extension) {
      case 'jpg':
      case 'jpeg':
        mimeType = 'image/jpeg';
        break;
      case 'png':
        mimeType = 'image/png';
        break;
      case 'gif':
        mimeType = 'image/gif';
        break;
      default:
        mimeType = 'application/octet-stream'; // 默认 MIME 类型
        break;
    }

    // 构建 data URL
    const dataUrl = `data:${mimeType};base64,${base64Image}`;
        return {
          filePath:filePath,
          base64Image:dataUrl
        };
  }

  /**
   * 将前端生成的详情图数据写入 EXE 同级目录下的 output 文件夹。
   * @param {{ bundles: Array }} payload
   */
  async saveGeneratedImages (payload = {}) {
    try {
      const { app } = require('electron');
      const bundles = payload.bundles || [];
      if (!Array.isArray(bundles) || !bundles.length) {
        return { code: 1, msg: '无可保存的图片数据' };
      }

      // 运行目录：打包后为 EXE 所在目录，开发环境为项目根目录
      const isPackaged = app.isPackaged;
      const exeDir = isPackaged ? path.dirname(app.getPath('exe')) : process.cwd();
      const baseOutputDir = path.join(exeDir, 'output');

      if (!fs.existsSync(baseOutputDir)) {
        fs.mkdirSync(baseOutputDir, { recursive: true });
      }

      let fileCount = 0;

      const saveDataUrlToFile = (dataUrl, targetPath) => {
        if (!dataUrl || typeof dataUrl !== 'string') return;
        const match = dataUrl.match(/^data:image\/\w+;base64,(.+)$/);
        const base64Data = match ? match[1] : dataUrl;
        const buffer = Buffer.from(base64Data, 'base64');
        const dir = path.dirname(targetPath);
        if (!fs.existsSync(dir)) {
          fs.mkdirSync(dir, { recursive: true });
        }
        fs.writeFileSync(targetPath, buffer);
        fileCount += 1;
      };

      bundles.forEach(bundle => {
        if (!bundle) return;
        const styleNo = (bundle.styleNo || bundle.styleKey || 'UNKNOWN').toString().replace(/[\\\/:*?"<>|]/g, '_');
        const styleDir = path.join(baseOutputDir, styleNo);
        if (!fs.existsSync(styleDir)) {
          fs.mkdirSync(styleDir, { recursive: true });
        }

        // 单画布图片
        (bundle.images || []).forEach((img, idx) => {
          if (!img || typeof img.dataUrl !== 'string') return;
          if (img.dataUrl === 'model' || img.dataUrl === 'scene') return;
          if (!img.dataUrl.startsWith('data:image')) return;
          const fileName = `canvas_${img.canvasIndex || 0}_img_${idx}.jpg`;
          const targetPath = path.join(styleDir, fileName);
          saveDataUrlToFile(img.dataUrl, targetPath);
        });

        // 合成长图
        if (bundle.combined && bundle.combined.dataUrl) {
          const combinedPath = path.join(styleDir, 'all_canvases.jpg');
          saveDataUrlToFile(bundle.combined.dataUrl, combinedPath);
        }
      });

      return {
        code: 0,
        data: {
          outputDir: baseOutputDir,
          fileCount,
        },
      };
    } catch (error) {
      console.error('saveGeneratedImages error:', error);
      return {
        code: 1,
        msg: error.message || '保存生成图片失败',
      };
    }
  }

  async saveRemoteImage(payload = {}) {
    try {
      const url = payload.url
      if (!url) return { code: 1, msg: '没有可保存的图片' }
      const defaultName = payload.defaultName || `湛江场景图_${Date.now()}.png`
      const dest = dialog.showSaveDialogSync({
        title: '保存图片到本地',
        defaultPath: defaultName,
        filters: [
          { name: '图片', extensions: ['png', 'jpg', 'jpeg', 'webp'] },
        ],
      })
      if (!dest) return { code: 1, msg: '已取消保存' }
      await this._writeImageToFile(url, dest)
      return { code: 0, msg: '保存成功', path: dest }
    } catch (error) {
      Log.error('保存图片失败:', error)
      return { code: 1, msg: error.message || '保存图片失败' }
    }
  }

  async saveRemoteImages(payload = {}) {
    try {
      const items = payload.items || []
      if (!items.length) return { code: 1, msg: '没有可保存的图片' }
      const dir = dialog.showOpenDialogSync({
        title: '选择保存文件夹',
        properties: ['openDirectory', 'createDirectory'],
      })
      if (!dir || !dir[0]) return { code: 1, msg: '已取消保存' }
      const folder = dir[0]
      let count = 0
      for (let i = 0; i < items.length; i++) {
        const item = items[i]
        if (!item || !item.url) continue
        let ext = path.extname(String(item.url || '').split('?')[0] || '')
        if (!['.png', '.jpg', '.jpeg', '.webp'].includes(ext.toLowerCase())) ext = '.png'
        const dest = path.join(folder, this._safeFileName(item.name || `湛江场景图_${i + 1}`) + ext)
        await this._writeImageToFile(item.url, dest)
        count += 1
      }
      return { code: 0, msg: '保存成功', path: folder, count }
    } catch (error) {
      Log.error('批量保存图片失败:', error)
      return { code: 1, msg: error.message || '保存图片失败' }
    }
  }

  _safeFileName(name) {
    return String(name || '湛江场景图').replace(/[\\/:*?"<>|]/g, '_').slice(0, 80)
  }

  _writeImageToFile(url, dest) {
    const fsPromises = fs.promises
    if (typeof url === 'string' && url.startsWith('data:image')) {
      const match = url.match(/^data:image\/\w+;base64,(.+)$/)
      const base64Data = match ? match[1] : url
      return fsPromises.writeFile(dest, Buffer.from(base64Data, 'base64'))
    }
    if (typeof url === 'string' && !/^https?:\/\//i.test(url)) {
      const localPath = url.replace(/^file:\/\//i, '')
      return fsPromises.copyFile(localPath, dest)
    }
    const http = require('http')
    const https = require('https')
    return new Promise((resolve, reject) => {
      const fetchOnce = (target, hops = 0) => {
        if (hops > 5) {
          reject(new Error('下载跳转次数过多'))
          return
        }
        const client = target.startsWith('https') ? https : http
        const req = client.get(target, (res) => {
          if (res.statusCode >= 300 && res.statusCode < 400 && res.headers.location) {
            fetchOnce(res.headers.location, hops + 1)
            return
          }
          if (res.statusCode !== 200) {
            reject(new Error('下载失败: ' + res.statusCode))
            return
          }
          const chunks = []
          res.on('data', (chunk) => chunks.push(chunk))
          res.on('end', () => {
            fs.writeFile(dest, Buffer.concat(chunks), (err) => err ? reject(err) : resolve())
          })
        })
        req.on('error', reject)
      }
      fetchOnce(url)
    })
  }

  async openFile(optiops= {
    title:"选择文件",
    filters:[
      { name: '支持JPG', extensions: ['jpg','jpeg'] },
    ],
  }){

    const filePaths = dialog.showOpenDialogSync({
      title:optiops.title || '选择文件',
      properties: ['openFile'],
      filters: optiops.filters || [
        { name: '选择文件' },
      ]
    })
    if(filePaths[0]) return filePaths[0];
    return filePaths

  }

  getAppConfig(){
    const config  =  readConfigFile()
    const appPath = path.join(app.getAppPath(), '../..');
    const pyPath = path.join(path.dirname(appPath), 'extraResources', 'py');
    return  {
      ...config,
      userDataPath: app.getPath('userData'),
      appPath: appPath,
      pyPath:pyPath,
    }
  }
  // 字体管理相关方法
  async downloadFont(args, event) {
    try {
      console.log('🔤 IPC downloadFont called with args:', args, 'event:', event)
      const { url, fontName } = args;
      console.log('🔤 IPC downloadFont parsed:', { url, fontName })
      Log.info('downloadFontdownloadFontdownloadFontdownloadFont:', url, fontName)
      const https = require('https');
      const http = require('http');
      const fs = require('fs');
      const path = require('path');
      const crypto = require('crypto');

      // 获取字体缓存目录
      const userDataPath = app.getPath('userData');
      const fontCacheDir = path.join(userDataPath, 'fonts');

      // 确保字体缓存目录存在
      if (!fs.existsSync(fontCacheDir)) {
        fs.mkdirSync(fontCacheDir, { recursive: true });
      }

      // 生成字体文件名（使用URL的哈希值避免文件名冲突）
      const urlHash = crypto.createHash('md5').update(url).digest('hex').substring(0, 8);
      const fontFileName = `${fontName.replace(/[^a-zA-Z0-9]/g, '_')}_${urlHash}.ttf`;
      const localFontPath = path.join(fontCacheDir, fontFileName);

      // 检查本地是否已有字体文件
      if (fs.existsSync(localFontPath)) {
        console.log('字体已存在:', localFontPath);
        return { success: true, path: localFontPath };
      }

      console.log('开始下载字体:', fontName, '到:', localFontPath);

      // 下载字体文件
      const protocol = url.startsWith('https:') ? https : http;

      return new Promise((resolve, reject) => {
        const request = protocol.get(url, (response) => {
          if (response.statusCode !== 200) {
            reject(new Error(`Failed to download font: ${response.statusCode}`));
            return;
          }

          const fileStream = fs.createWriteStream(localFontPath);
          response.pipe(fileStream);

          fileStream.on('finish', () => {
            fileStream.close();
            console.log('字体下载完成:', localFontPath);
            resolve({ success: true, path: localFontPath });
          });

          fileStream.on('error', (error) => {
            fs.unlinkSync(localFontPath); // 删除失败的文件
            reject(error);
          });
        });

        request.on('error', (error) => {
          reject(error);
        });

        // 设置超时
        request.setTimeout(30000, () => {
          request.abort();
          reject(new Error('Font download timeout'));
        });
      });
    } catch (error) {
      Log.info('downloadFont Error:', error);
      return { success: false, error: error.message };
    }
  }

  async loadFontFromCache(args, event) {
    try {
      const { fontName, fontUrl } = args;
      const fs = require('fs');
      const path = require('path');
      const crypto = require('crypto');

      // 获取字体缓存目录
      const userDataPath = app.getPath('userData');
      const fontCacheDir = path.join(userDataPath, 'fonts');

      // 生成字体文件名
      const urlHash = crypto.createHash('md5').update(fontUrl).digest('hex').substring(0, 8);
      const fontFileName = `${fontName.replace(/[^a-zA-Z0-9]/g, '_')}_${urlHash}.ttf`;
      const localFontPath = path.join(fontCacheDir, fontFileName);

      // 检查本地是否已有字体文件
      if (fs.existsSync(localFontPath)) {
        // 读取字体文件内容并转换为base64
        const fontData = fs.readFileSync(localFontPath);
        const base64Data = fontData.toString('base64');
        const dataUrl = `data:font/ttf;base64,${base64Data}`;

        return { success: true, dataUrl, path: localFontPath };
      }

      return { success: false, message: 'Font not found in cache' };
    } catch (error) {
      console.error('从缓存加载字体失败:', error);
      return { success: false, error: error.message };
    }
  }

  getFontCachePath(args, event) {
    const path = require('path');
    const userDataPath = app.getPath('userData');
    return path.join(userDataPath, 'fonts');
  }

  // 测试方法
  async testIPC(args, event) {
    console.log('🧪 IPC test method called:', args)
    return { success: true, message: 'IPC is working', args }
  }

  async readFileImageForPath(filePath,maxWidth=1500){

    const getMimeType = (fileName)=>{
      const extension = path.extname(fileName).toLowerCase().replace('.', '');
      let mimeType = '';
      switch (extension) {
        case 'jpg':
        case 'jpeg':
          mimeType = 'image/jpeg';
          break;
        case 'png':
          mimeType = 'image/png';
          break;
        case 'gif':
          mimeType = 'image/gif';
          break;
        case 'webp':
          mimeType = 'image/webp';
          break;
        case 'avif':
          mimeType = 'image/avif';
          break;
        default:
          mimeType = 'application/octet-stream';
          break;
      }
      return mimeType;
    }

    try {
      const fileName = path.basename(filePath);
      const image = sharp(filePath);
      const metadata = await image.metadata();

      let mimeType = getMimeType(fileName); // 调用下面定义的私有方法获取 MIME 类型

      let fileBuffer;

      if (metadata.width > maxWidth) {
        // 如果宽度大于 1500px，压缩至 1500px 宽度，保持比例
        fileBuffer = await image.resize(maxWidth).toBuffer();
      } else {
        // 否则直接读取原图
        fileBuffer = fs.readFileSync(filePath);
      }

      return {
        fileBuffer,
        fileName,
        mimeType
      };
    } catch (error) {
      console.error('Error processing image:', error);
      throw error;
    }


  }


}

UtilsController.toString = () => '[class ExampleController]';
module.exports = UtilsController;