'use strict';

const path = require('path');
const { logger } = require('ee-core/log');
const { getConfig } = require('ee-core/config');
const { getMainWindow } = require('ee-core/electron');
const { getBaseDir } = require('ee-core/ps');
const { app } = require('electron');

// 动态获取 scripts 目录路径
function getScriptsPath(scriptName) {
  const fs = require('fs');
  
  // 判断是否是打包后的环境
  const isProd = process.resourcesPath && process.resourcesPath.includes('win-unpacked');
  
  if (isProd) {
    // 生产环境（打包后）：从 resources 目录
    const prodPath = path.join(process.resourcesPath, 'scripts', scriptName);
    console.log(`[getScriptsPath] Production mode, using: ${prodPath}`);
    return prodPath;
  } else {
    // 开发环境：从项目根目录
    // __dirname 是 electron/preload 或 public/electron/preload
    // 需要找到项目根目录
    let currentDir = __dirname;
    let scriptsPath = null;
    
    // 向上查找，直到找到 scripts 目录
    for (let i = 0; i < 5; i++) {
      currentDir = path.join(currentDir, '..');
      const testPath = path.join(currentDir, 'scripts', scriptName + '.js');
      if (fs.existsSync(testPath)) {
        scriptsPath = path.join(currentDir, 'scripts', scriptName);
        console.log(`[getScriptsPath] Development mode, found at: ${scriptsPath}`);
        return scriptsPath;
      }
    }
    
    // 如果找不到，返回一个默认路径
    console.warn(`[getScriptsPath] Cannot find ${scriptName}, returning default path`);
    return path.join(__dirname, '../../../scripts', scriptName);
  }
}

// 延迟加载 scripts
let MySQLManager, JavaRunner, ConfigGenerator, PortChecker, StartupManager, LogWindowManager;

function loadScripts() {
  if (!MySQLManager) {
    MySQLManager = require(getScriptsPath('start-mysql'));
    JavaRunner = require(getScriptsPath('java-runner'));
    ConfigGenerator = require(getScriptsPath('config-generator'));
    PortChecker = require(getScriptsPath('port-checker'));
    StartupManager = require(getScriptsPath('startup-manager'));
    LogWindowManager = require(getScriptsPath('log-window-manager'));
  }
}

class Lifecycle {
  constructor() {
    this.mysqlManager = null;
    this.javaRunner = null;
    this.startupManager = null;
    this.logWindowManager = null;
    this.mysqlPort = null;
    this.javaPort = null;
    this.autoRefreshTimer = null;
  }

  /**
   * core app have been loaded
   */
  async ready() {
    logger.info('[lifecycle] ready');
    // 延迟加载 scripts
    loadScripts();
  }

  /**
   * 完整的应用启动流程
   */
  async startApplication() {
    const config = getConfig();

    // 步骤1: 初始化
    this.startupManager.updateProgress('init');
    await this.sleep(500);

    // 步骤2: 检测 MySQL 端口
    this.startupManager.updateProgress('check-mysql-port');
    this.logWindowManager.addLog('system', '正在检测可用的 MySQL 端口（从3306开始）...');
    
    this.mysqlPort = await PortChecker.findAvailablePort(3306, 100);
    
    if (this.mysqlPort === -1) {
      this.logWindowManager.addLog('error', 'MySQL 端口检测失败：3306-3405 全部被占用');
      throw new Error('无法找到可用的 MySQL 端口（3306-3405 全部被占用）');
    }
    
    if (this.mysqlPort !== 3306) {
      this.logWindowManager.addLog('warn', `MySQL 默认端口 3306 已被占用，自动切换到端口: ${this.mysqlPort}`);
    } else {
      this.logWindowManager.addLog('success', `MySQL 将使用默认端口: ${this.mysqlPort}`);
    }
    
    logger.info(`[lifecycle] MySQL will use port: ${this.mysqlPort}`);
    this.startupManager.updateProgress('check-mysql-port', { mysqlPort: this.mysqlPort });
    await this.sleep(500);

    // 步骤3: 启动 MySQL
    if (config.mysql && config.mysql.enable && config.mysql.autoStart) {
      this.startupManager.updateProgress('start-mysql', { mysqlPort: this.mysqlPort });
      this.logWindowManager.addLog('mysql', `正在启动 MySQL，端口: ${this.mysqlPort}`);
      
      this.mysqlManager = new MySQLManager();
      
      // 监听 MySQL 输出
      const actualPort = await this.mysqlManager.start(this.mysqlPort);
      this.setupMySQLLogging(this.mysqlManager.process);
      
      logger.info(`[lifecycle] MySQL started on port: ${actualPort}`);
      this.logWindowManager.addLog('success', `MySQL 已启动，端口: ${actualPort}`);
      
      // 步骤4: 等待 MySQL 就绪
      this.startupManager.updateProgress('wait-mysql', { mysqlPort: actualPort });
      this.logWindowManager.addLog('mysql', '等待 MySQL 就绪...');
      
      const mysqlReady = await PortChecker.waitForPort(actualPort, 30000);
      
      if (!mysqlReady) {
        this.logWindowManager.addLog('error', `MySQL 启动超时（端口 ${actualPort} 未响应）`);
        throw new Error(`MySQL 启动超时（端口 ${actualPort} 未响应）`);
      }
      
      logger.info('[lifecycle] MySQL is ready');
      this.logWindowManager.addLog('success', 'MySQL 已就绪！');
      await this.sleep(500);
    }

    // 步骤5: 检测 Java 端口
    this.startupManager.updateProgress('check-java-port', { mysqlPort: this.mysqlPort });
    this.logWindowManager.addLog('system', '正在检测可用的 Java 端口（从18092开始）...');
    
    this.javaPort = await PortChecker.findAvailablePort(18092, 100);
    
    if (this.javaPort === -1) {
      this.logWindowManager.addLog('error', 'Java 端口检测失败：18092-18191 全部被占用');
      throw new Error('无法找到可用的后端服务端口（18092-18191 全部被占用）');
    }
    
    if (this.javaPort !== 18092) {
      this.logWindowManager.addLog('warn', `Java 默认端口 18092 已被占用，自动切换到端口: ${this.javaPort}`);
    } else {
      this.logWindowManager.addLog('success', `Java 将使用默认端口: ${this.javaPort}`);
    }
    
    logger.info(`[lifecycle] Spring Boot will use port: ${this.javaPort}`);
    this.startupManager.updateProgress('check-java-port', { 
      mysqlPort: this.mysqlPort,
      javaPort: this.javaPort 
    });
    await this.sleep(500);

    // 步骤6: 生成配置文件
    this.startupManager.updateProgress('generate-config', {
      mysqlPort: this.mysqlPort,
      javaPort: this.javaPort
    });
    
    const configGenerator = new ConfigGenerator();
    const { configPath, dataPath } = await configGenerator.generateConfig({
      mysqlPort: this.mysqlPort,
      javaPort: this.javaPort,
      mysqlPassword: 'njcnpqs'
    });
    
    logger.info(`[lifecycle] Configuration generated at: ${configPath}`);
    logger.info(`[lifecycle] Data directory: ${dataPath}`);
    this.startupManager.updateProgress('generate-config', {
      mysqlPort: this.mysqlPort,
      javaPort: this.javaPort,
      dataPath: dataPath
    });
    await this.sleep(500);

    // 步骤7: 启动 Spring Boot
    this.startupManager.updateProgress('start-java', {
      mysqlPort: this.mysqlPort,
      javaPort: this.javaPort,
      dataPath: dataPath
    });
    
    await this.startSpringBoot(configPath);
    
    // 步骤8: 等待 Spring Boot 就绪
    this.startupManager.updateProgress('wait-java', {
      mysqlPort: this.mysqlPort,
      javaPort: this.javaPort,
      dataPath: dataPath
    });
    
    const javaReady = await PortChecker.waitForPort(this.javaPort, 60000);
    
    if (!javaReady) {
      logger.warn(`[lifecycle] Spring Boot 启动超时，但继续启动应用`);
    } else {
      logger.info('[lifecycle] Spring Boot is ready');
    }
    
    await this.sleep(1000);

    // 步骤9: 完成
    this.startupManager.updateProgress('done', {
      mysqlPort: this.mysqlPort,
      javaPort: this.javaPort,
      dataPath: dataPath
    });
    
    logger.info('[lifecycle] Application startup completed');
    this.logWindowManager.addLog('system', '='.repeat(60));
    this.logWindowManager.addLog('success', '✓ NPQS9100 启动完成！所有服务正常运行');
    this.logWindowManager.addLog('system', `✓ MySQL 端口: ${this.mysqlPort}`);
    this.logWindowManager.addLog('system', `✓ Java 端口: ${this.javaPort}`);
    this.logWindowManager.addLog('system', `✓ 数据目录: ${dataPath}`);
    this.logWindowManager.addLog('system', '='.repeat(60));
    this.logWindowManager.addLog('system', '应用即将启动...');
    
    // 先关闭 Loading 窗口
    this.startupManager.closeLoadingWindow();
    
    // 等待3秒，让用户看清日志信息，然后再显示主窗口
    await this.sleep(3000);
    
    // 显示主窗口
    const win = getMainWindow();
    win.show();
    win.focus();
    
    // 添加主窗口关闭事件监听
    win.on('close', async () => {
      logger.info('[lifecycle] Main window closing, cleaning up...');
      await this.cleanup();
    });
    
    // 立即刷新一次，确保显示最新内容
    setTimeout(() => {
      if (win && !win.isDestroyed()) {
        logger.info('[lifecycle] Reloading main window to ensure fresh content');
        this.logWindowManager.addLog('system', '正在加载应用界面...');
        win.reload();
      }
    }, 500);
    
    // 设置主窗口加载超时自动刷新（30秒）
    this.setupAutoRefresh(win);
    
    // 提示用户
    this.logWindowManager.addLog('system', '主应用已打开！此日志窗口可随时关闭');
  }
  
  /**
   * 设置主窗口自动刷新机制
   */
  setupAutoRefresh(win) {
    // 30秒后检查页面是否还在loading，如果是则刷新
    this.autoRefreshTimer = setTimeout(() => {
      if (win && !win.isDestroyed()) {
        // 检查页面是否还在loading状态
        win.webContents.executeJavaScript('document.readyState').then(state => {
          logger.info(`[lifecycle] Page readyState after 30s: ${state}`);
          if (state !== 'complete') {
            logger.warn('[lifecycle] Page still loading after 30s, reloading...');
            if (this.logWindowManager && this.logWindowManager.logWindow && !this.logWindowManager.logWindow.isDestroyed()) {
              this.logWindowManager.addLog('warn', '页面加载超时，自动刷新...');
            }
            win.reload();
          } else {
            logger.info('[lifecycle] Page loaded successfully');
          }
        }).catch(err => {
          logger.error('[lifecycle] Failed to check page state:', err);
        });
      }
    }, 30000); // 30秒超时
  }

  /**
   * 清理所有资源
   */
  async cleanup() {
    logger.info('[lifecycle] Starting cleanup...');

    // 清除自动刷新定时器
    if (this.autoRefreshTimer) {
      clearTimeout(this.autoRefreshTimer);
      this.autoRefreshTimer = null;
    }

    // 在日志窗口显示清理信息（在关闭之前）
    if (this.logWindowManager && this.logWindowManager.logWindow && !this.logWindowManager.logWindow.isDestroyed()) {
      this.logWindowManager.addLog('system', '='.repeat(60));
      this.logWindowManager.addLog('system', '应用正在关闭，清理资源中...');
    }

    // 关闭 Loading 窗口
    if (this.startupManager) {
      try {
        this.startupManager.closeLoadingWindow();
      } catch (error) {
        // 忽略
      }
    }

    // 停止 Spring Boot
    if (this.javaRunner) {
      try {
        logger.info('[lifecycle] Stopping Spring Boot...');
        if (this.logWindowManager && this.logWindowManager.logWindow && !this.logWindowManager.logWindow.isDestroyed()) {
          this.logWindowManager.addLog('system', '正在停止 Spring Boot...');
        }
        
        // 设置超时，3秒后强制继续
        const stopPromise = this.javaRunner.stopSpringBoot();
        const timeoutPromise = new Promise(resolve => setTimeout(resolve, 3000));
        await Promise.race([stopPromise, timeoutPromise]);
        
        logger.info('[lifecycle] Spring Boot stopped');
        if (this.logWindowManager && this.logWindowManager.logWindow && !this.logWindowManager.logWindow.isDestroyed()) {
          this.logWindowManager.addLog('success', 'Spring Boot 已停止');
        }
      } catch (error) {
        logger.error('[lifecycle] Failed to stop Spring Boot:', error);
      }
    }

    // 停止 MySQL
    const config = getConfig();
    if (config.mysql && config.mysql.enable && config.mysql.autoStart) {
      try {
        logger.info('[lifecycle] Stopping MySQL...');
        if (this.logWindowManager && this.logWindowManager.logWindow && !this.logWindowManager.logWindow.isDestroyed()) {
          this.logWindowManager.addLog('system', '正在停止 MySQL（最多等待10秒）...');
        }
        
        if (this.mysqlManager) {
          // MySQL 的 stop() 方法内部使用 mysqladmin shutdown（最多10秒）
          // 设置12秒超时作为保险
          const stopPromise = this.mysqlManager.stop();
          const timeoutPromise = new Promise(resolve => setTimeout(resolve, 12000));
          await Promise.race([stopPromise, timeoutPromise]);
        }
        
        logger.info('[lifecycle] MySQL stopped');
        if (this.logWindowManager && this.logWindowManager.logWindow && !this.logWindowManager.logWindow.isDestroyed()) {
          this.logWindowManager.addLog('success', 'MySQL 已停止');
          this.logWindowManager.addLog('system', '清理完成，应用即将退出');
          this.logWindowManager.addLog('system', '='.repeat(60));
        }
      } catch (error) {
        logger.error('[lifecycle] Failed to stop MySQL:', error);
        if (this.logWindowManager && this.logWindowManager.logWindow && !this.logWindowManager.logWindow.isDestroyed()) {
          this.logWindowManager.addLog('error', 'MySQL 停止失败: ' + error.message);
        }
      }
    }

    // 等待500ms让用户看到清理日志
    await this.sleep(500);

    // 最后关闭日志窗口
    if (this.logWindowManager) {
      try {
        logger.info('[lifecycle] Closing log window...');
        this.logWindowManager.close();
      } catch (error) {
        logger.error('[lifecycle] Failed to close log window:', error);
      }
    }

    logger.info('[lifecycle] Cleanup completed');
  }

  /**
   * 设置 MySQL 日志监听
   */
  setupMySQLLogging(mysqlProcess) {
    if (!mysqlProcess) return;

    mysqlProcess.stdout.on('data', (data) => {
      const output = data.toString().trim();
      if (output) {
        // 根据内容判断日志类型
        if (output.includes('[ERROR]') || output.includes('ERROR')) {
          this.logWindowManager.addLog('error', `[MySQL] ${output}`);
        } else if (output.includes('[Warning]') || output.includes('WARNING')) {
          this.logWindowManager.addLog('warn', `[MySQL] ${output}`);
        } else if (output.includes('ready for connections')) {
          this.logWindowManager.addLog('success', `[MySQL] ${output}`);
        } else {
          this.logWindowManager.addLog('mysql', `[MySQL] ${output}`);
        }
      }
    });

    mysqlProcess.stderr.on('data', (data) => {
      const output = data.toString().trim();
      if (output) {
        this.logWindowManager.addLog('warn', `[MySQL Error] ${output}`);
      }
    });
  }

  /**
   * 启动 Spring Boot 应用
   */
  async startSpringBoot(configPath) {
    try {
      logger.info('[lifecycle] Starting Spring Boot application...');
      this.logWindowManager.addLog('java', '正在启动 Spring Boot 应用...');
      
      // 启动Java应用
      this.javaRunner = new JavaRunner();
      
      // 开发环境：build/extraResources/java/entrance.jar
      // 打包后：resources/extraResources/java/entrance.jar
      const isDev = !process.resourcesPath;
      const jarPath = isDev
        ? path.join(__dirname, '..', 'build', 'extraResources', 'java', 'entrance.jar')
        : path.join(process.resourcesPath, 'extraResources', 'java', 'entrance.jar');
      
      const javaProcess = this.javaRunner.runSpringBoot(jarPath, configPath, {
        javaPort: this.javaPort
      });
      
      // 监听Java进程输出
      javaProcess.stdout.on('data', (data) => {
        const output = data.toString().trim();
        if (output) {
          logger.info('[SpringBoot]', output);
          
          // 根据内容判断日志类型
          if (output.includes('ERROR') || output.includes('Exception')) {
            this.logWindowManager.addLog('error', `[Java] ${output}`);
          } else if (output.includes('WARN')) {
            this.logWindowManager.addLog('warn', `[Java] ${output}`);
          } else if (output.includes('Started') || output.includes('Completed')) {
            this.logWindowManager.addLog('success', `[Java] ${output}`);
          } else {
            this.logWindowManager.addLog('java', `[Java] ${output}`);
          }
        }
      });
      
      javaProcess.stderr.on('data', (data) => {
        const output = data.toString().trim();
        if (output) {
          logger.error('[SpringBoot]', output);
          this.logWindowManager.addLog('error', `[Java Error] ${output}`);
        }
      });
      
      javaProcess.on('close', (code) => {
        logger.info(`[SpringBoot] Process exited with code ${code}`);
        this.logWindowManager.addLog('system', `Spring Boot 进程退出，代码: ${code}`);
      });
      
      logger.info('[lifecycle] Spring Boot application started');
      this.logWindowManager.addLog('success', 'Spring Boot 应用已启动！');
    } catch (error) {
      logger.error('[lifecycle] Failed to start Spring Boot:', error);
      this.logWindowManager.addLog('error', `Spring Boot 启动失败: ${error.message}`);
      throw error;
    }
  }

  /**
   * 睡眠函数
   */
  sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
  }

  /**
   * electron app ready
   */
  async electronAppReady() {
    logger.info('[lifecycle] electron-app-ready');
  }

  /**
   * main window have been loaded
   */
  async windowReady() {
    logger.info('[lifecycle] window-ready');

    // 创建日志窗口
    this.logWindowManager = new LogWindowManager();
    this.logWindowManager.createLogWindow();
    this.logWindowManager.addLog('system', '='.repeat(60));
    this.logWindowManager.addLog('system', 'NPQS9100 启动中...');
    this.logWindowManager.addLog('system', '='.repeat(60));

    // 创建 Loading 窗口
    this.startupManager = new StartupManager();
    this.startupManager.createLoadingWindow();

    // 开始启动流程
    try {
      await this.startApplication();
    } catch (error) {
      logger.error('[lifecycle] Failed to start application:', error);
      this.logWindowManager.addLog('error', `启动失败: ${error.message}`);
      this.logWindowManager.addLog('system', '请检查日志窗口了解详细错误信息');
      this.startupManager.showError(error.message || '启动失败，请查看日志');
      
      // 显示错误5秒后关闭Loading窗口，但不关闭日志窗口
      setTimeout(() => {
        this.startupManager.closeLoadingWindow();
        
        // 即使启动失败，也显示主窗口（但用户可能需要手动修复问题）
        const win = getMainWindow();
        win.show();
        win.focus();
        
        // 添加主窗口关闭事件监听
        win.on('close', async () => {
          logger.info('[lifecycle] Main window closing (after error), cleaning up...');
          await this.cleanup();
        });
        
        this.logWindowManager.addLog('warn', '应用已启动，但部分服务可能未正常运行');
      }, 5000);
    }

    // 主窗口初始化但不显示，等待启动流程完成后再显示
    // 在 startApplication() 中会调用 win.show()
  }

  /**
   * before app close (框架生命周期钩子)
   */  
  async beforeClose() {
    logger.info('[lifecycle] before-close hook triggered');
    await this.cleanup();
  }
}
Lifecycle.toString = () => '[class Lifecycle]';

// 导出实例而不是类
module.exports = new Lifecycle();