import axios from 'axios'
import { ElMessage } from 'element-plus'

const ins = axios.create({
  baseURL: '/',
  timeout: 15000,
})

// 请求拦截：自动附带 token
ins.interceptors.request.use(config => {
  const token = sessionStorage.getItem('CQ-TOKEN')
  if (token) {
    config.headers['Authorization'] = `Bearer ${token}`
  }
  return config
})

// 响应拦截：统一处理错误
ins.interceptors.response.use(
  res => {
    return res.data
  },
  err => {
    if (err.response?.status === 401) {
      sessionStorage.removeItem('CQ-TOKEN')
      ElMessage.error('登录已过期，请重新登录')
      window.location.href = '/login'
    } else {
      ElMessage.error(err.response?.data?.message || '网络错误，请稍后重试')
    }
    return Promise.reject(err)
  }
)

export default ins