import axios from 'axios'
import { Message } from 'element-ui'

const api = axios.create({
  baseURL: '/api',
  timeout: 20000
})

api.interceptors.request.use(config => {
  const token = sessionStorage.getItem('token')
  if (token) config.headers.Authorization = 'Bearer ' + token
  return config
})

api.interceptors.response.use(
  response => {
    const payload = response.data
    if (payload && payload.code && payload.code !== 200) {
      Message.error(payload.message || '请求失败')
      return Promise.reject(new Error(payload.message || '请求失败'))
    }
    return payload
  },
  error => {
    if (error.response && error.response.status === 401) {
      sessionStorage.clear()
      window.location.href = '/login'
    } else {
      Message.error(error.response && error.response.data && error.response.data.message ? error.response.data.message : '网络异常，请稍后重试')
    }
    return Promise.reject(error)
  }
)

export default api