/**
 * 小红书搜索/热点抓取
 * 注意：小红书需要登录才能获取完整数据
 */

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

const PLATFORM = 'xiaohongshu';

/**
 * 抓取小红书搜索建议/热点
 * @param {string} keyword - 搜索关键词
 */
async function fetchXiaohongshuSearch(keyword = 'AI') {
  const browser = await puppeteer.launch(getLaunchOptions());
  
  try {
    console.log(`🔴 开始抓取小红书搜索: "${keyword}"...`);
    
    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'
    );
    
    // 小红书搜索页
    const searchUrl = `https://www.xiaohongshu.com/search_result?keyword=${encodeURIComponent(keyword)}`;
    
    await page.goto(searchUrl, { 
      waitUntil: 'networkidle2',
      timeout: 60000 
    });
    
    await randomDelay(2000, 4000);
    
    // 尝试提取笔记数据
    const notes = await page.evaluate(() => {
      const items = [];
      // 小红书的笔记卡片选择器（可能随时间变化）
      const cards = document.querySelectorAll('.note-item, [class*="note"], .feeds-page > div > div');
      
      cards.forEach((card, index) => {
        const titleEl = card.querySelector('.title, .desc, [class*="title"]');
        const linkEl = card.querySelector('a[href*="/explore/"]');
        
        if (titleEl) {
          items.push({
            rank: index + 1,
            title: titleEl.textContent.trim().substring(0, 100),
            url: linkEl ? linkEl.href : '',
          });
        }
      });
      
      return items;
    });
    
    const result = {
      platform: PLATFORM,
      keyword,
      timestamp: new Date().toISOString(),
      url: searchUrl,
      count: notes.length,
      items: notes.slice(0, 10),
      note: '小红书需要登录才能获取完整数据',
    };
    
    if (notes.length > 0) {
      printTable(result.items);
    } else {
      console.log('⚠️ 未获取到数据，可能需要登录');
    }
    
    saveData(PLATFORM, result);
    
    console.log(`✅ 完成`);
    return result;
    
  } catch (error) {
    console.error('❌ 抓取失败:', error.message);
    throw error;
  } finally {
    await browser.close();
  }
}

module.exports = { fetchXiaohongshuSearch };

// 直接运行
if (require.main === module) {
  const keyword = process.argv[2] || 'AI';
  fetchXiaohongshuSearch(keyword).catch(console.error);
}