const mysql = require('mysql2');

const connection = mysql.createConnection({
  host: 'nj-cdb-3pwh2kz1.sql.tencentcdb.com',
  port: 20784,
  user: 'jiebanke',
  password: 'aiot741$12346',
  database: 'niumall'
});

console.log('正在连接数据库...');

connection.connect((err) => {
  if (err) {
    console.error('连接失败:', err.message);
    return;
  }
  
  console.log('连接成功，查询数据...');
  
  // 查询供应商数量
  connection.query('SELECT COUNT(*) as count FROM suppliers', (err, results) => {
    if (err) {
      console.error('查询供应商失败:', err.message);
      connection.end();
      return;
    }
    console.log('供应商总数:', results[0].count);
    
    // 查询司机数量
    connection.query('SELECT COUNT(*) as count FROM drivers', (err, results) => {
      if (err) {
        console.error('查询司机失败:', err.message);
        connection.end();
        return;
      }
      console.log('司机总数:', results[0].count);
      
      // 查询订单数量
      connection.query('SELECT COUNT(*) as count FROM orders', (err, results) => {
        if (err) {
          console.error('查询订单失败:', err.message);
          connection.end();
          return;
        }
        console.log('订单总数:', results[0].count);
        
        connection.end();
        console.log('验证完成');
      });
    });
  });
});