ai-interview/recruitment-backend/app.js

require('dotenv').config();
const express = require('express');
const cors = require('cors');
const helmet = require('helmet');
const morgan = require('morgan');
const { pool } = require('./config/db');
const routes = require('./routes'); // 确保这里导入的是整合所有路由的入口文件
const errorHandler = require('./middlewares/error');

const app = express();

// CORS 配置
const corsOptions = {
  origin: 'http://localhost:5173',
  credentials: true,
  methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
  allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With'],
  optionsSuccessStatus: 200
};

// 中间件配置
app.use(cors(corsOptions)); // 只保留这一个 CORS 中间件
app.options('*', cors(corsOptions)); // 预检请求处理
app.use(helmet());
app.use(morgan('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

// 测试路由
app.get('/test-db', async (req, res) => {
  try {
    const [rows] = await pool.query('SELECT 1 + 1 AS result');
    res.json({ 
      success: true,
      data: rows[0],
      message: '数据库连接正常'
    });
  } catch (error) {
    console.error('数据库连接测试失败:', error);
    res.status(500).json({
      success: false,
      error: error.message
    });
  }
});

// 路由注册 (关键修正点)
// 注意：这里只需要使用 routes，不需要单独再挂载 jobsRouter
// 因为 routes/index.js 应该已经整合了所有子路由
app.use('/api', routes); 

// 错误处理
app.use(errorHandler);

// 404 处理
app.use((req, res) => {
  res.status(404).json({
    success: false,
    error: 'Endpoint not found'
  });
});

// 启动服务器
const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
  console.log(`Server running on port ${PORT}`);
  console.log(`测试地址: http://localhost:${PORT}/test-db`);
});

module.exports = app;