/**
 * Windsurf Register - Windsurf网站注册
 * https://windsurf.com/account/register
 * 
 * 注册流程：
 * Step 1: 填写基本信息（First Name, Last Name, Email）
 * Step 2: 设置密码
 * Step 3: 邮箱验证
 * Step 4: 完善个人信息
 * ... 根据实际情况继续添加步骤
 */

const AccountDataGenerator = require('../generator');
const HumanBehavior = require('../utils/human-behavior');
const logger = require('../../../shared/logger');

class WindsurfRegister {
  constructor() {
    this.siteName = 'Windsurf';
    this.siteUrl = 'https://windsurf.com/account/register';
    this.dataGen = new AccountDataGenerator();
    this.human = new HumanBehavior();
    this.browser = null;
    this.page = null;
    this.currentStep = 0;
    this.accountData = null;
    
    // 定义所有步骤
    this.steps = [
      { id: 1, name: '填写基本信息', method: 'step1_fillBasicInfo' },
      { id: 2, name: '设置密码', method: 'step2_setPassword' },
      { id: 3, name: '邮箱验证', method: 'step3_emailVerification' },
      // 根据实际注册流程继续添加
    ];
  }
  
  /**
   * 获取步骤总数
   */
  getTotalSteps() {
    return this.steps.length;
  }
  
  /**
   * 获取当前步骤信息
   */
  getCurrentStepInfo() {
    if (this.currentStep === 0) {
      return { id: 0, name: '未开始', total: this.getTotalSteps() };
    }
    const step = this.steps[this.currentStep - 1];
    return { 
      ...step, 
      current: this.currentStep, 
      total: this.getTotalSteps() 
    };
  }

  /**
   * 生成账号数据（干运行模式）
   */
  generateData(options = {}) {
    logger.info(this.siteName, '生成账号数据...');
    
    const account = this.dataGen.generateAccount({
      name: options.name,
      email: options.email,
      username: options.username,
      password: options.password,
      includePhone: false  // Windsurf第一步不需要手机号
    });

    return account;
  }

  /**
   * 初始化浏览器（使用rebrowser-puppeteer，自带反检测）
   */
  async initBrowser() {
    // rebrowser-puppeteer 已经打好补丁，无需额外配置
    const puppeteer = require('puppeteer');
    
    logger.info(this.siteName, '启动浏览器（反检测模式）...');
    
    // 随机视口大小（模拟不同设备）
    const viewports = [
      { width: 1920, height: 1080 },
      { width: 1366, height: 768 },
      { width: 1536, height: 864 },
      { width: 1440, height: 900 }
    ];
    const viewport = viewports[Math.floor(Math.random() * viewports.length)];
    
    this.browser = await puppeteer.launch({
      headless: false,  // 非无头模式更难被检测
      args: [
        '--no-sandbox',
        '--disable-setuid-sandbox',
        '--disable-blink-features=AutomationControlled',
        '--disable-dev-shm-usage',
        `--window-size=${viewport.width},${viewport.height}`
      ],
      ignoreDefaultArgs: ['--enable-automation']
    });

    this.page = await this.browser.newPage();
    
    // 设置随机视口
    await this.page.setViewport(viewport);

    // 随机用户代理
    const userAgents = [
      'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
      'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
      'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36'
    ];
    await this.page.setUserAgent(
      userAgents[Math.floor(Math.random() * userAgents.length)]
    );
    
    // 设置语言和时区
    await this.page.setExtraHTTPHeaders({
      'Accept-Language': 'en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7'
    });
    
    logger.success(this.siteName, `浏览器启动成功 (${viewport.width}x${viewport.height})`);
  }

  /**
   * 关闭浏览器
   */
  async closeBrowser() {
    if (this.browser) {
      await this.browser.close();
      logger.info(this.siteName, '浏览器已关闭');
    }
  }

  /**
   * 步骤1: 填写基本信息（First Name, Last Name, Email）- 使用人类行为
   */
  async step1_fillBasicInfo() {
    logger.info(this.siteName, `[步骤 1/${this.getTotalSteps()}] 填写基本信息`);
    
    // 打开注册页面
    logger.info(this.siteName, `打开注册页面: ${this.siteUrl}`);
    await this.page.goto(this.siteUrl, {
      waitUntil: 'networkidle2',
      timeout: 30000
    });
    
    // 模拟阅读页面（1-3秒）
    await this.human.readPage(1, 3);

    // 填写First Name（使用人类行为）
    logger.info(this.siteName, '  → 填写First Name...');
    await this.page.waitForSelector('#firstName', { timeout: 10000 });
    await this.human.humanType(this.page, '#firstName', this.accountData.firstName);

    // 填写Last Name
    logger.info(this.siteName, '  → 填写Last Name...');
    await this.page.waitForSelector('#lastName', { timeout: 10000 });
    await this.human.humanType(this.page, '#lastName', this.accountData.lastName);

    // 填写Email
    logger.info(this.siteName, '  → 填写Email...');
    await this.page.waitForSelector('#email', { timeout: 10000 });
    await this.human.humanType(this.page, '#email', this.accountData.email);

    // 勾选同意条款（如果有）
    try {
      const checkbox = await this.page.$('input[type="checkbox"]');
      if (checkbox) {
        logger.info(this.siteName, '  → 勾选同意条款...');
        await this.human.humanCheckbox(this.page, 'input[type="checkbox"]');
      }
    } catch (error) {
      logger.warn(this.siteName, '  → 未找到同意条款checkbox，跳过');
    }

    // 点击Continue按钮（使用人类行为）
    logger.info(this.siteName, '  → 点击Continue按钮...');
    
    // 尝试查找按钮
    let buttonSelector = null;
    const possibleSelectors = [
      'button:has-text("Continue")',
      'button[type="submit"]',
      'button.continue-button',
      'button[class*="continue"]'
    ];
    
    for (const selector of possibleSelectors) {
      try {
        const button = await this.page.$(selector);
        if (button) {
          buttonSelector = selector;
          break;
        }
      } catch (e) {
        // 继续尝试下一个
      }
    }
    
    if (buttonSelector) {
      await this.human.visualSearch(this.page, buttonSelector);
      await this.human.humanClick(this.page, buttonSelector);
    } else {
      logger.warn(this.siteName, '  → 未找到Continue按钮，尝试按Enter键');
      await this.human.randomDelay(500, 1000);
      await this.page.keyboard.press('Enter');
    }

    // 等待跳转或响应
    await this.human.randomDelay(2000, 4000);
    
    this.currentStep = 1;
    logger.success(this.siteName, `步骤 1 完成`);
  }

  /**
   * 步骤2: 设置密码
   */
  async step2_setPassword() {
    logger.info(this.siteName, `[步骤 2/${this.getTotalSteps()}] 设置密码`);
    
    // 等待密码页面加载
    await this.human.readPage(1, 2);
    
    // 填写密码
    logger.info(this.siteName, '  → 填写密码...');
    await this.page.waitForSelector('#password', { timeout: 10000 });
    await this.human.humanType(this.page, '#password', this.accountData.password);
    
    // 填写确认密码
    logger.info(this.siteName, '  → 填写确认密码...');
    await this.page.waitForSelector('#passwordConfirmation', { timeout: 10000 });
    await this.human.humanType(this.page, '#passwordConfirmation', this.accountData.password);
    
    // 查找并点击Continue按钮
    logger.info(this.siteName, '  → 点击Continue按钮...');
    
    const possibleSelectors = [
      'button:has-text("Continue")',
      'button[type="submit"]',
      'button.continue-button',
      'button[class*="continue"]'
    ];
    
    let buttonSelector = null;
    for (const selector of possibleSelectors) {
      try {
        const button = await this.page.$(selector);
        if (button) {
          buttonSelector = selector;
          break;
        }
      } catch (e) {
        // 继续尝试
      }
    }
    
    if (buttonSelector) {
      await this.human.visualSearch(this.page, buttonSelector);
      await this.human.humanClick(this.page, buttonSelector);
    } else {
      logger.warn(this.siteName, '  → 未找到Continue按钮，尝试按Enter键');
      await this.human.randomDelay(500, 1000);
      await this.page.keyboard.press('Enter');
    }
    
    // 等待跳转或响应
    await this.human.randomDelay(2000, 4000);
    
    this.currentStep = 2;
    logger.success(this.siteName, `步骤 2 完成`);
  }

  /**
   * 步骤3: 邮箱验证（待实现）
   */
  async step3_emailVerification() {
    logger.info(this.siteName, `[步骤 3/${this.getTotalSteps()}] 邮箱验证`);
    
    // 邮箱验证逻辑
    // ...
    
    this.currentStep = 3;
    logger.warn(this.siteName, '步骤 3 待实现（需要邮箱验证码）');
  }

  /**
   * 执行注册流程
   * @param {Object} options - 选项
   * @param {number} options.fromStep - 从第几步开始（默认1）
   * @param {number} options.toStep - 执行到第几步（默认全部）
   */
  async register(options = {}) {
    const fromStep = options.fromStep || 1;
    const toStep = options.toStep || this.getTotalSteps();
    
    try {
      // 1. 生成数据
      this.accountData = this.generateData(options);
      logger.success(this.siteName, '账号数据生成完成');
      logger.info(this.siteName, `First Name: ${this.accountData.firstName}`);
      logger.info(this.siteName, `Last Name: ${this.accountData.lastName}`);
      logger.info(this.siteName, `Email: ${this.accountData.email}`);
      logger.info(this.siteName, `Password: ${this.accountData.password}`);

      // 2. 初始化浏览器
      await this.initBrowser();

      // 3. 执行指定范围的步骤
      logger.info(this.siteName, `\n开始执行步骤 ${fromStep} 到 ${toStep} (共 ${this.getTotalSteps()} 步)\n`);
      
      for (let i = fromStep; i <= toStep && i <= this.getTotalSteps(); i++) {
        const step = this.steps[i - 1];
        
        if (typeof this[step.method] === 'function') {
          try {
            await this[step.method]();
          } catch (error) {
            logger.error(this.siteName, `步骤 ${i} 执行失败: ${error.message}`);
            throw error;
          }
        } else {
          logger.warn(this.siteName, `步骤 ${i} (${step.name}) 未实现`);
          break;
        }
      }

      const stepInfo = this.getCurrentStepInfo();
      logger.success(this.siteName, `\n已完成步骤 ${fromStep} 到 ${this.currentStep}`);
      
      if (this.currentStep < this.getTotalSteps()) {
        logger.info(this.siteName, `剩余步骤需要手动完成或等待后续开发`);
      }

      // 不自动关闭浏览器，让用户查看结果
      if (!options.keepBrowserOpen) {
        logger.info(this.siteName, '10秒后关闭浏览器...');
        await this.page.waitForTimeout(10000);
        await this.closeBrowser();
      } else {
        logger.info(this.siteName, '浏览器保持打开状态');
      }

      return {
        success: true,
        account: this.accountData,
        completedSteps: this.currentStep,
        totalSteps: this.getTotalSteps(),
        message: `完成 ${this.currentStep}/${this.getTotalSteps()} 步`
      };

    } catch (error) {
      logger.error(this.siteName, `注册失败: ${error.message}`);
      
      // 截图保存错误状态
      if (this.page) {
        try {
          const screenshotPath = `/tmp/windsurf-error-${Date.now()}.png`;
          await this.page.screenshot({ path: screenshotPath });
          logger.info(this.siteName, `错误截图已保存: ${screenshotPath}`);
        } catch (e) {
          // 忽略截图错误
        }
      }

      await this.closeBrowser();
      
      throw error;
    }
  }
}

module.exports = WindsurfRegister;