// 更新products表结构，添加联系人相关字段
const mysql = require('mysql2/promise');

async function updateProductTable() {
  let connection;
  try {
    // 连接数据库 - 使用正确的密码
    connection = await mysql.createConnection({
      host: '1.95.162.61',
      port: 3306,
      user: 'root',
      password: 'schl@2025', // 从.env文件中获取的密码
      database: 'wechat_app'
    });
    console.log('✅ 数据库连接成功');
    
    // 检查product_contact字段是否存在
    const [rows] = await connection.query(
      "SELECT column_name FROM information_schema.columns WHERE table_schema = 'wechat_app' AND table_name = 'products' AND column_name = 'product_contact'"
    );
    
    if (rows.length === 0) {
      // 添加product_contact字段
      await connection.query("ALTER TABLE products ADD COLUMN product_contact VARCHAR(100) DEFAULT ''");
      console.log('✅ 已添加product_contact字段');
    } else {
      console.log('ℹ️ product_contact字段已存在');
    }
    
    // 检查contact_phone字段是否存在
    const [phoneRows] = await connection.query(
      "SELECT column_name FROM information_schema.columns WHERE table_schema = 'wechat_app' AND table_name = 'products' AND column_name = 'contact_phone'"
    );
    
    if (phoneRows.length === 0) {
      // 添加contact_phone字段
      await connection.query("ALTER TABLE products ADD COLUMN contact_phone VARCHAR(20) DEFAULT ''");
      console.log('✅ 已添加contact_phone字段');
    } else {
      console.log('ℹ️ contact_phone字段已存在');
    }
    
    // 查询所有已发布商品的数量
    const [productRows] = await connection.query(
      "SELECT COUNT(*) as count FROM products WHERE status = 'published'"
    );
    console.log(`📊 已发布商品数量: ${productRows[0].count}`);
    
    // 查询需要更新联系人信息的商品数量
    const [pendingRows] = await connection.query(
      "SELECT COUNT(*) as count FROM products WHERE status = 'published' AND (product_contact = '' OR product_contact IS NULL OR contact_phone = '' OR contact_phone IS NULL)"
    );
    console.log(`⚠️ 需要更新联系人信息的商品数量: ${pendingRows[0].count}`);
    
    // 显示一些商品数据作为示例
    const [sampleProducts] = await connection.query(
      "SELECT productId, productName, product_contact, contact_phone FROM products WHERE status = 'published' LIMIT 5"
    );
    console.log('\n📋 示例商品数据:');
    sampleProducts.forEach(product => {
      console.log(`- ${product.productName}: 联系人=${product.product_contact || '空'}, 电话=${product.contact_phone || '空'}`);
    });
    
  } catch (error) {
    console.error('❌ 操作失败:', error.message);
  } finally {
    if (connection) {
      await connection.end();
      console.log('\n✅ 数据库连接已关闭');
    }
  }
}

// 执行更新
updateProductTable();