// routes/users.js
const express = require('express');
const router = express.Router();
const userController = require('../controllers/userController');
const authMiddleware = require('../middlewares/auth');

// 获取用户列表
router.get('/', authMiddleware.verifyToken, userController.getAllUsers);

// 获取单个用户
router.get('/:id', authMiddleware.verifyToken, userController.getUserById);

// 创建用户
router.post('/', userController.createUser);

// 更新用户
router.put('/:id', authMiddleware.verifyToken, userController.updateUser);

// 删除用户
router.delete('/:id', authMiddleware.verifyToken, userController.deleteUser);

module.exports = router;

// api/index.js
import axios from 'axios'
import { ElMessage } from 'element-plus'
import store from '@/store'
import router from '@/router'

// 创建axios实例
const service = axios.create({
  baseURL: import.meta.env.VITE_API_BASE_URL,
  timeout: 15000
})

// 请求拦截器
service.interceptors.request.use(
  config => {
    // 添加token到请求头
    if (store.getters.token) {
      config.headers['Authorization'] = `Bearer ${store.getters.token}`
    }
    return config
  },
  error => {
    console.log(error)
    return Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  response => {
    const res = response.data
    
    // 根据业务逻辑处理响应
    if (res.code !== 200) {
      ElMessage({
        message: res.message || '系统错误',
        type: 'error',
        duration: 5 * 1000
      })
      
      // 401: 未授权，跳转到登录页
      if (res.code === 401) {
        store.dispatch('user/resetToken').then(() => {
          router.push({ path: '/login' })
        })
      }
      
      return Promise.reject(new Error(res.message || '系统错误'))
    } else {
      return res
    }
  },
  error => {
    console.log('请求错误', error)
    ElMessage({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service

// api/user.js
import request from './index'

export function login(data) {
  return request({
    url: '/auth/login',
    method: 'post',
    data
  })
}

export function getInfo(token) {
  return request({
    url: '/user/info',
    method: 'get',
    params: { token }
  })
}

export function logout() {
  return request({
    url: '/auth/logout',
    method: 'post'
  })
}

export function getUserList(params) {
  return request({
    url: '/users',
    method: 'get',
    params
  })
}

// vite.config.js
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'

export default defineConfig({
  plugins: [vue()],
  server: {
    proxy: {
      '/api': {
        target: 'http://localhost:3000',
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\/api/, '')
      }
    }
  }
})

// 后端全局错误处理中间件
const errorHandler = (err, req, res, next) => {
  console.error(err.stack);
  
  // 自定义业务错误
  if (err.isBusinessError) {
    return res.status(400).json({
      success: false,
      message: err.message,
      code: err.code || 400
    });
  }
  
  // 数据库错误
  if (err.name === 'SequelizeValidationError') {
    return res.status(400).json({
      success: false,
      message: '数据验证失败',
      errors: err.errors.map(e => ({ field: e.path, message: e.message }))
    });
  }
  
  // 未捕获的错误
  res.status(500).json({
    success: false,
    message: process.env.NODE_ENV === 'production' ? '服务器内部错误' : err.message,
    code: 500
  });
};

module.exports = errorHandler;