/**
 * 浏览器配置
 * 支持 Puppeteer 和 Playwright
 */

const fs = require('fs');

// 浏览器可执行路径配置
const browserPaths = {
  // Linux
  linux: {
    chromium: '/usr/bin/chromium-browser',  // 优先使用系统 chromium
    chromiumAlt: '/usr/bin/chromium',
    chrome: '/usr/bin/google-chrome',
    snapChromium: '/snap/bin/chromium',
  },
  // macOS
  darwin: {
    chrome: '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
    chromium: '/Applications/Chromium.app/Contents/MacOS/Chromium',
  },
  // Windows
  win32: {
    chrome: 'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe',
    chromium: 'C:\\Program Files\\Chromium\\Application\\chromium.exe',
  }
};

// 获取当前平台的浏览器路径
function getBrowserPath() {
  const platform = process.platform;
  const paths = browserPaths[platform] || browserPaths.linux;
  
  // 按优先级返回所有可能的路径
  return [
    process.env.PUPPETEER_EXECUTABLE_PATH,
    process.env.CHROME_BIN,
    paths.chromium,
    paths.chromiumAlt,
    paths.chrome,
    '/usr/bin/chromium',
  ].filter(Boolean);
}

// 查找第一个可用的浏览器
function findAvailableBrowser() {
  const paths = getBrowserPath();
  for (const p of paths) {
    if (fs.existsSync(p)) {
      return p;
    }
  }
  return null;
}

// 浏览器启动配置 (Puppeteer)
function getLaunchOptions() {
  const executablePath = findAvailableBrowser();
  
  if (!executablePath) {
    throw new Error('未找到可用的浏览器，请安装 Chromium 或 Chrome');
  }
  
  return {
    headless: 'new',  // 新的 headless 模式
    args: [
      '--no-sandbox',
      '--disable-setuid-sandbox',
      '--disable-dev-shm-usage',
      '--disable-accelerated-2d-canvas',
      '--disable-gpu',
      '--window-size=1920,1080',
      '--disable-blink-features=AutomationControlled',  // 隐藏自动化特征
    ],
    ignoreDefaultArgs: ['--enable-automation'],  // 移除自动化标志
    executablePath,
    timeout: 30000,
  };
}

// Playwright 配置
function getPlaywrightOptions() {
  const executablePath = findAvailableBrowser();
  
  if (!executablePath) {
    throw new Error('未找到可用的浏览器，请安装 Chromium 或 Chrome');
  }
  
  return {
    headless: true,
    args: [
      '--no-sandbox',
      '--disable-setuid-sandbox',
      '--disable-dev-shm-usage',
    ],
    executablePath,
  };
}

module.exports = {
  getLaunchOptions,
  getPlaywrightOptions,
  getBrowserPath,
  findAvailableBrowser,
};