import axios from 'axios'
import { ElMessage } from 'element-plus'
import { getToken, clearToken } from '@/utils/auth'

// 创建 axios 实例
const request = axios.create({
  baseURL: '/api',
  timeout: 10000
})

// 请求拦截器
request.interceptors.request.use(
  config => {
    const token = getToken()
    const url = config.url || ''
    if (token && !url.includes('/auth/login')) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  error => {
    console.error('请求错误:', error)
    return Promise.reject(error)
  }
)

// 响应拦截器
request.interceptors.response.use(
  response => {
    const res = response.data
    
    // 如果响应码为 0，表示错误（可由调用方自行提示，如推送进度弹窗）
    if (res.code === 0) {
      if (!response.config.skipErrorToast) {
        ElMessage.error(res.msg || '请求失败')
      }
      const err = new Error(res.msg || '请求失败')
      err.responseData = res
      return Promise.reject(err)
    }
    
    return res
  },
  error => {
    const status = error.response?.status
    if (status === 401) {
      clearToken()
      const detail = error.response?.data?.detail
      if (detail) {
        ElMessage.warning(typeof detail === 'string' ? detail : '登录已失效')
      }
      const path = window.location.pathname || ''
      if (!path.startsWith('/login')) {
        window.location.assign(
          `/login?redirect=${encodeURIComponent(path + (window.location.search || ''))}`
        )
      }
      return Promise.reject(error)
    }
    console.error('响应错误:', error)
    ElMessage.error(error.message || '网络错误')
    return Promise.reject(error)
  }
)

export default request