/**
 * 微博热搜抓取
 * https://s.weibo.com/top/summary
 */

const puppeteer = require('puppeteer-core');
const { getLaunchOptions } = require('../../config/browser');
const { saveData, formatHotNumber, randomDelay, printTable } = require('../utils/helpers');

const PLATFORM = 'weibo';
const URL = 'https://s.weibo.com/top/summary';

/**
 * 抓取微博热搜
 */
async function fetchWeiboHot() {
  const browser = await puppeteer.launch(getLaunchOptions());
  
  try {
    console.log('🔥 开始抓取微博热搜...');
    
    const page = await browser.newPage();
    
    // 设置 User-Agent
    await page.setUserAgent(
      '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'
    );
    
    // 打开页面
    await page.goto(URL, { 
      waitUntil: 'networkidle2',
      timeout: 60000 
    });
    
    await randomDelay(1000, 2000);
    
    // 提取热搜数据
    const hotspots = await page.evaluate(() => {
      const items = [];
      const rows = document.querySelectorAll('#pl_top_realtimehot tbody tr');
      
      rows.forEach((row, index) => {
        // 跳过表头
        if (index === 0) return;
        
        const rankEl = row.querySelector('.td-01.ranktop');
        const titleEl = row.querySelector('.td-02 a');
        const hotEl = row.querySelector('.td-02 span');
        
        if (titleEl) {
          const rank = rankEl ? rankEl.textContent.trim() : String(index);
          const title = titleEl.textContent.trim();
          const hot = hotEl ? hotEl.textContent.trim() : '';
          const url = titleEl.href;
          
          items.push({
            rank: parseInt(rank) || index,
            title,
            hot,
            url,
          });
        }
      });
      
      return items;
    });
    
    const result = {
      platform: PLATFORM,
      timestamp: new Date().toISOString(),
      url: URL,
      count: hotspots.length,
      items: hotspots.slice(0, 20),  // 只取前20条
    };
    
    // 打印结果
    printTable(result.items);
    
    // 保存数据
    saveData(PLATFORM, result);
    
    console.log(`✅ 成功抓取 ${hotspots.length} 条微博热搜`);
    return result;
    
  } catch (error) {
    console.error('❌ 抓取失败:', error.message);
    throw error;
  } finally {
    await browser.close();
  }
}

module.exports = { fetchWeiboHot };

// 直接运行
if (require.main === module) {
  fetchWeiboHot().catch(console.error);
}