import axios from 'axios'
import { Message, MessageBox } from 'element-ui'
import store from '@/store'
import { getToken, setToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import settings from "@/settings"

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: settings.baseURL, //接口地址
  // 超时
  timeout: 30000
})
// request拦截器
service.interceptors.request.use(config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  if (getToken() && !isToken) {
    config.headers['Authorization'] = getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
  }
  // get请求映射params参数
  if (config.method === 'get' && config.params) {
    let url = config.url + '?';
    for (const propName of Object.keys(config.params)) {
      const value = config.params[propName];
      var part = encodeURIComponent(propName) + "=";
      if (value !== null && typeof (value) !== "undefined") {
        if (typeof value === 'object') {
          for (const key of Object.keys(value)) {
            let params = propName + '[' + key + ']';
            var subPart = encodeURIComponent(params) + "=";
            url += subPart + encodeURIComponent(value[key]) + "&";
          }
        } else {
          url += part + encodeURIComponent(value) + "&";
        }
      }
    }
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }
  return config
}, error => {
  console.log(error)
  Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
  if (res.headers['token']) {
    setToken(decodeURI(res.headers['token']))
  }
  // 未设置状态码则默认成功状态
  const code = res.data.code || 200;
  // 获取错误信息
  const msg = errorCode[code] || res.data.msg || errorCode['default']
  if (code === 301) {
    MessageBox.confirm('登录状态已过期，需重新登录', '系统提示', {
      closeOnClickModal: false,
      showCancelButton: false,
      confirmButtonText: '重新登录',
      type: 'warning'
    }
    ).then(() => {
      store.dispatch('LogOut').then(() => {
        location.href = settings.routerBase + '/index';
      })
    })
  } else if (code === 403) {
    //无权限页面
    location.href = '/401';
  }
  else if (code === 500) {
    Message({
      message: msg,
      type: 'error'
    })
    return Promise.reject(new Error(msg))
  } else if (
    code !== 200 &&
    code !== 201 &&
    code !== 202 &&
    code != 203 &&
    code != 300 &&
    code != 402 &&
    code != 603
  ) {
    Message({
      message: msg,
      type: "error",
    });
    return Promise.reject("error");
  } else {
    return res.data;
  }
},
  error => {
    console.log('err' + error)
    let { message } = error;
    if (message == "Network Error") {
      message = "网络连接异常";
    }
    else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    }
    else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    Message({
      message: message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service