import express from 'express';
import cors from 'cors';

const app = express();
const PORT = process.env.PORT || 3001;

// 中间件
app.use(cors());
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

// 健康检查接口
app.get('/api/health', (req, res) => {
  res.json({ status: 'ok', message: 'Backend service is running' });
});

// 模拟登录接口 - 支持 /api/auth/login 和 /api/v1/auth/login
app.post('/api/auth/login', handleLogin);
app.post('/api/v1/auth/login', handleLogin);

function handleLogin(req: express.Request, res: express.Response) {
  const { username, password } = req.body;

  // 验证用户名和密码
  if (username === 'admin' && password === 'admin123') {
    res.json({
      success: true,
      data: {
        token: 'mock-token-' + Date.now(),
        refreshToken: 'mock-refresh-token-' + Date.now(),
        user: {
          id: 'USER-ADMIN-001',
          username: username,
          role: 'ADMIN',
          tenantId: 'default-tenant',
          shopId: 'default-shop'
        }
      }
    });
  } else {
    res.status(401).json({
      success: false,
      error: '用户名或密码错误'
    });
  }
}

// 启动服务器
app.listen(PORT, () => {
  console.log(`简化后端服务运行在 http://localhost:${PORT}`);
});

export default app;