const express = require('express');
const cors = require('cors');
const path = require('path');
const ordersRouter = require('./routes/orders');

const app = express();
const PORT = process.env.PORT || 3000;

app.use(cors());
app.use(express.json({ limit: '50mb' }));

// API 路由
app.use('/api/orders', ordersRouter);

// 健康检查
app.get('/api/health', (req, res) => {
  res.json({ status: 'ok', timestamp: new Date().toISOString() });
});

// 生产环境：托管前端静态文件
const distPath = path.join(__dirname, '..', 'web', 'dist');
app.use(express.static(distPath));

// SPA 兜底：所有非API请求返回 index.html
app.get('*', (req, res, next) => {
  if (req.path.startsWith('/api')) return next();
  res.sendFile(path.join(distPath, 'index.html'), (err) => {
    if (err) {
      res.status(404).send('前端文件未找到，请先执行 npm run build');
    }
  });
});

app.listen(PORT, '0.0.0.0', () => {
  console.log(`服务器运行在 http://0.0.0.0:${PORT} (NODE_ENV=${process.env.NODE_ENV || 'development'})`);
});