/**
 * 测试视频封面功能脚本
 * 验证所有视频的封面API是否正常工作
 */

const http = require('http');
const sqlite3 = require('sqlite3').verbose();
const path = require('path');

// 数据库路径
const DB_PATH = path.join(__dirname, 'database', 'goguryeo_video.db');

// 测试视频封面API
function testVideoFrame(videoId) {
  return new Promise((resolve) => {
    const options = {
      hostname: 'localhost',
      port: 4001,
      path: `/api/videos/${videoId}/frame`,
      method: 'GET'
    };

    const req = http.request(options, (res) => {
      console.log(`视频 ${videoId}: 状态码 ${res.statusCode}, 内容类型: ${res.headers['content-type']}, 大小: ${res.headers['content-length']} bytes`);
      
      if (res.statusCode === 200 && res.headers['content-type'] === 'image/jpeg') {
        resolve({ videoId, success: true, size: res.headers['content-length'] });
      } else {
        resolve({ videoId, success: false, statusCode: res.statusCode });
      }
      
      // 消费响应数据
      res.on('data', () => {});
      res.on('end', () => {});
    });

    req.on('error', (err) => {
      console.error(`视频 ${videoId} 请求错误:`, err.message);
      resolve({ videoId, success: false, error: err.message });
    });

    req.setTimeout(10000, () => {
      console.error(`视频 ${videoId} 请求超时`);
      req.destroy();
      resolve({ videoId, success: false, error: 'timeout' });
    });

    req.end();
  });
}

// 主测试函数
async function testAllVideoCovers() {
  console.log('开始测试视频封面功能...');
  
  // 连接数据库
  const db = new sqlite3.Database(DB_PATH, (err) => {
    if (err) {
      console.error('数据库连接失败:', err);
      return;
    }
    console.log('已连接到数据库');
  });

  // 获取所有视频ID
  db.all('SELECT id, title FROM videos ORDER BY id', async (err, rows) => {
    if (err) {
      console.error('查询视频失败:', err);
      return;
    }

    console.log(`找到 ${rows.length} 个视频，开始测试封面功能...\n`);

    const results = [];
    
    // 逐个测试视频封面
    for (const video of rows) {
      const result = await testVideoFrame(video.id);
      results.push(result);
      
      // 添加延迟避免过快请求
      await new Promise(resolve => setTimeout(resolve, 500));
    }

    // 统计结果
    const successful = results.filter(r => r.success);
    const failed = results.filter(r => !r.success);

    console.log('\n=== 测试结果统计 ===');
    console.log(`总视频数: ${results.length}`);
    console.log(`成功生成封面: ${successful.length}`);
    console.log(`失败: ${failed.length}`);
    
    if (failed.length > 0) {
      console.log('\n失败的视频:');
      failed.forEach(f => {
        console.log(`- 视频 ${f.videoId}: ${f.error || '状态码 ' + f.statusCode}`);
      });
    }

    if (successful.length > 0) {
      console.log('\n成功的视频封面大小:');
      successful.forEach(s => {
        console.log(`- 视频 ${s.videoId}: ${s.size} bytes`);
      });
    }

    console.log('\n测试完成！');
    
    // 关闭数据库连接
    db.close();
  });
}

// 运行测试
testAllVideoCovers().catch(console.error);