const mysql = require('mysql2/promise');

async function insertTestData() {
  console.log('📊 在資料庫中插入真實測試數據...\n');

  let connection;
  try {
    // 連接資料庫
    connection = await mysql.createConnection({
      host: 'localhost',
      user: 'root',
      password: '123456',
      database: 'ai_showcase_platform'
    });

    console.log('✅ 資料庫連接成功');

    // 1. 獲取現有的應用和用戶
    const [apps] = await connection.execute('SELECT id FROM apps WHERE is_active = TRUE LIMIT 3');
    const [users] = await connection.execute('SELECT id FROM users WHERE status = "active" LIMIT 10');

    if (apps.length === 0) {
      console.log('❌ 沒有找到現有應用，無法創建測試數據');
      return;
    }

    console.log(`📱 找到 ${apps.length} 個應用`);
    console.log(`👥 找到 ${users.length} 個用戶`);

    const targetAppId = apps[0].id; // 使用第一個應用作為目標
    console.log(`🎯 目標應用 ID: ${targetAppId}`);

    // 2. 清空現有的測試數據（如果有的話）
    console.log('\n🧹 清空現有測試數據...');
    await connection.execute('DELETE FROM user_views WHERE app_id = ?', [targetAppId]);
    await connection.execute('DELETE FROM user_likes WHERE app_id = ?', [targetAppId]);
    await connection.execute('DELETE FROM user_ratings WHERE app_id = ?', [targetAppId]);
    console.log('✅ 現有測試數據已清空');

    // 3. 插入用戶瀏覽記錄
    console.log('\n👀 插入用戶瀏覽記錄...');
    const views = [];
    for (let i = 0; i < 25; i++) {
      const userId = users[Math.floor(Math.random() * users.length)].id;
      const viewedAt = new Date(Date.now() - Math.random() * 30 * 24 * 60 * 60 * 1000); // 過去30天內
      const ipAddress = `192.168.1.${Math.floor(Math.random() * 255)}`;
      const userAgent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36';

      views.push([targetAppId, userId, viewedAt, ipAddress, userAgent]);
    }

    for (const view of views) {
      await connection.execute(`
        INSERT INTO user_views (id, app_id, user_id, viewed_at, ip_address, user_agent) 
        VALUES (UUID(), ?, ?, ?, ?, ?)
      `, view);
    }

    console.log(`✅ 插入了 ${views.length} 個瀏覽記錄`);

    // 4. 插入用戶按讚記錄
    console.log('\n❤️ 插入用戶按讚記錄...');
    const likes = [];
    for (let i = 0; i < 8; i++) {
      const userId = users[Math.floor(Math.random() * users.length)].id;
      const likedAt = new Date(Date.now() - Math.random() * 30 * 24 * 60 * 60 * 1000);

      likes.push([targetAppId, userId, likedAt]);
    }

    for (const like of likes) {
      await connection.execute(`
        INSERT INTO user_likes (id, app_id, user_id, liked_at) 
        VALUES (UUID(), ?, ?, ?)
      `, like);
    }

    console.log(`✅ 插入了 ${likes.length} 個按讚記錄`);

    // 5. 插入用戶評分記錄
    console.log('\n⭐ 插入用戶評分記錄...');
    const ratings = [
      { rating: 5, review: '這個應用非常實用，界面設計得很棒！' },
      { rating: 4, review: '功能強大，處理速度很快，推薦使用。' },
      { rating: 5, review: '非常好用的工具，節省了很多時間。' },
      { rating: 3, review: '還不錯，但還有改進空間。' },
      { rating: 4, review: '界面簡潔，操作簡單，很滿意。' },
      { rating: 5, review: '功能齊全，使用體驗很好。' },
      { rating: 4, review: '整體不錯，希望能增加更多功能。' },
      { rating: 5, review: '非常推薦，已經推薦給同事了。' },
      { rating: 3, review: '還可以，但界面可以再優化。' },
      { rating: 4, review: '實用性很高，值得使用。' }
    ];

    for (let i = 0; i < ratings.length; i++) {
      const userId = users[Math.floor(Math.random() * users.length)].id;
      const ratedAt = new Date(Date.now() - Math.random() * 30 * 24 * 60 * 60 * 1000);

      await connection.execute(`
        INSERT INTO user_ratings (id, app_id, user_id, rating, rated_at) 
        VALUES (UUID(), ?, ?, ?, ?)
      `, [targetAppId, userId, ratings[i].rating, ratedAt]);
    }

    console.log(`✅ 插入了 ${ratings.length} 個評分記錄`);

    // 6. 更新應用的統計數據
    console.log('\n📈 更新應用統計數據...');
    const [viewCount] = await connection.execute(
      'SELECT COUNT(*) as count FROM user_views WHERE app_id = ?',
      [targetAppId]
    );
    const [likeCount] = await connection.execute(
      'SELECT COUNT(*) as count FROM user_likes WHERE app_id = ?',
      [targetAppId]
    );

    await connection.execute(`
      UPDATE apps 
      SET views_count = ?, likes_count = ?, updated_at = NOW()
      WHERE id = ?
    `, [viewCount[0].count, likeCount[0].count, targetAppId]);

    console.log(`  - 應用 ${targetAppId}: ${viewCount[0].count} 瀏覽, ${likeCount[0].count} 讚`);

    // 7. 顯示最終統計
    console.log('\n📊 數據插入完成！最終統計：');
    
    const [appStats] = await connection.execute(`
      SELECT 
        views_count,
        likes_count
      FROM apps 
      WHERE id = ?
    `, [targetAppId]);

    const [ratingStats] = await connection.execute(`
      SELECT 
        COUNT(*) as total_ratings,
        AVG(rating) as avg_rating
      FROM user_ratings
      WHERE app_id = ?
    `, [targetAppId]);

    const [viewStats] = await connection.execute(`
      SELECT COUNT(*) as total_views FROM user_views WHERE app_id = ?
    `, [targetAppId]);

    const [likeStats] = await connection.execute(`
      SELECT COUNT(*) as total_likes FROM user_likes WHERE app_id = ?
    `, [targetAppId]);

    console.log(`  - 應用瀏覽數: ${appStats[0].views_count}`);
    console.log(`  - 應用讚數: ${appStats[0].likes_count}`);
    console.log(`  - 總瀏覽數: ${viewStats[0].total_views}`);
    console.log(`  - 總讚數: ${likeStats[0].total_likes}`);
    console.log(`  - 評分總數: ${ratingStats[0].total_ratings}`);
    console.log(`  - 平均評分: ${ratingStats[0].avg_rating.toFixed(1)}`);

    console.log('\n🎉 真實測試數據插入完成！');
    console.log('\n💡 現在您可以重新載入應用管理頁面查看真實的資料庫數據');

  } catch (error) {
    console.error('❌ 插入測試數據時發生錯誤:', error);
    if (error.code === 'ECONNREFUSED') {
      console.log('\n💡 請確保 MySQL 服務正在運行，並且連接參數正確');
      console.log('   - Host: localhost');
      console.log('   - User: root');
      console.log('   - Password: 123456');
      console.log('   - Database: ai_showcase_platform');
    }
  } finally {
    if (connection) {
      await connection.end();
      console.log('\n🔌 資料庫連接已關閉');
    }
  }
}

insertTestData();