import axios from 'axios'
import { ElMessage } from 'element-plus'
import router from '@/router'

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

request.interceptors.request.use(
  (config) => {
    const token = localStorage.getItem('access_token')
    if (token) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  (error) => Promise.reject(error)
)

request.interceptors.response.use(
  (response) => {
    const res = response.data
    if (res.code !== 200) {
      ElMessage.error(res.message || '请求失败')
      if (res.code === 401) {
        localStorage.removeItem('access_token')
        localStorage.removeItem('refresh_token')
        localStorage.removeItem('user_info')
        router.push({ name: 'Login' })
      }
      return Promise.reject(new Error(res.message))
    }
    return res
  },
  async (error) => {
    if (error.response) {
      const status = error.response.status
      if (status === 401) {
        const refreshToken = localStorage.getItem('refresh_token')
        if (refreshToken) {
          try {
            const res = await axios.post('/api/public/refresh-token', null, {
              params: { refreshToken },
            })
            if (res.data.code === 200) {
              localStorage.setItem('access_token', res.data.data.accessToken)
              localStorage.setItem('refresh_token', res.data.data.refreshToken)
              error.config.headers.Authorization = `Bearer ${res.data.data.accessToken}`
              return request(error.config)
            }
          } catch {
            // refresh failed
          }
        }
        localStorage.removeItem('access_token')
        localStorage.removeItem('refresh_token')
        localStorage.removeItem('user_info')
        router.push({ name: 'Login' })
      } else if (status === 403) {
        ElMessage.error('无权限访问')
      } else if (status === 429) {
        ElMessage.error('请求过于频繁，请稍后再试')
      } else {
        ElMessage.error(error.response.data?.message || '服务器错误')
      }
    } else {
      ElMessage.error('网络连接失败')
    }
    return Promise.reject(error)
  }
)

export default request