text: import fetch from 'dva/fetch';
  import { notification,message,Alert } from 'antd';
  import router from 'umi/router';
  import hash from 'hash.js';
  import { isAntdPro } from './utils';
  
  const codeMessage = {
    200: '服务器成功返回请求的数据。',
    201: '新建或修改数据成功。',
    202: '一个请求已经进入后台排队（异步任务）。',
    204: '删除数据成功。',
    400: '发出的请求有错误，服务器没有进行新建或修改数据的操作。',
    401: '用户没有权限（令牌、用户名、密码错误）。',
    403: '用户得到授权，但是访问是被禁止的。',
    404: '发出的请求针对的是不存在的记录，服务器没有进行操作。',
    406: '请求的格式不可得。',
    410: '请求的资源被永久删除，且不会再得到的。',
    422: '当创建一个对象时，发生一个验证错误。',
    500: '服务器发生错误，请检查服务器。',
    502: '网关错误。',
    503: '服务不可用，服务器暂时过载或维护。',
    504: '网关超时。',
  };
  
  const checkStatus = response => {
    if (response.status >= 200 && response.status < 300) {
      return response;
    }
    const errortext = codeMessage[response.status] || response.statusText;
    notification.error({
      message: `请求错误 ${response.status}: ${response.url}`,
      description: errortext,
    });
    const error = new Error(errortext);
    error.name = response.status;
    error.response = response;
    throw error;
  };
  
  const cachedSave = (response, hashcode) => {
    /**
     * Clone a response data and store it in sessionStorage
     * Does not support data other than json, Cache only json
     */
    const contentType = response.headers.get('Content-Type');
    if (contentType && contentType.match(/application\/json/i)) {
      // All data is saved as text
      response
        .clone()
        .text()
        .then(content => {
          sessionStorage.setItem(hashcode, content);
          sessionStorage.setItem(`${hashcode}:timestamp`, Date.now());
        });
    }
    return response;
  };
  
  window.ipandport = 'http://'+window.location.host;
  /**
   * Requests a URL, returning a promise.
   *
   * @param  {string} url       The URL we want to request
   * @param  {object} [option] The options we want to pass to "fetch"
   * @return {object}           An object containing either "data" or "err"
   */
  export default function request(url, option) {
    const options = {
      expirys: isAntdPro(),
      ...option,
    };
    /**
     * Produce fingerprints based on url and parameters
     * Maybe url has the same parameters
     */
    const fingerprint = url + (options.body ? JSON.stringify(options.body) : '');
    const hashcode = hash
      .sha256()
      .update(fingerprint)
      .digest('hex');
    let token = localStorage.getItem("TOKEN");
    const defaultOptions = {
      credentials: 'include',
    };
    const newOptions = { ...defaultOptions, ...options };
    if (
      newOptions.method === 'POST' ||
      newOptions.method === 'PUT' ||
      newOptions.method === 'DELETE'
    ) {
      newOptions.credentials = "include";
      if (typeof newOptions.body == 'string') {
        // newOptions.body is Json
        newOptions.headers = {
          Accept: 'application/json',
          'Content-Type': 'application/json; charset=utf-8',
          'X-Requested-With': 'XMLHttpRequest',
          'base.session.id':token?token:"",
          ...newOptions.headers,
        };
      } else if(newOptions.body instanceof FormData) {
        // newOptions.body is FormData
        newOptions.headers = {
          Accept: 'application/json',
          'X-Requested-With': 'XMLHttpRequest',
          'base.session.id':token?token:"",
          ...newOptions.headers,
        };
      }else{
        newOptions.headers = {
          Accept: 'application/json',
          'Content-Type': 'application/json; charset=utf-8',
          'X-Requested-With': 'XMLHttpRequest',
          'base.session.id':token?token:"",
          ...newOptions.headers,
        };
        newOptions.body = JSON.stringify(newOptions.body);
      }
    }else{
      newOptions.headers = {
        'base.session.id':token?token:"",
        'X-Requested-With': 'XMLHttpRequest',
        ...newOptions.headers,
      };
    }
  
    const expirys = options.expirys && 60;
    // options.expirys !== false, return the cache,
    if (options.expirys !== false) {
      const cached = sessionStorage.getItem(hashcode);
      const whenCached = sessionStorage.getItem(`${hashcode}:timestamp`);
      if (cached !== null && whenCached !== null) {
        const age = (Date.now() - whenCached) / 1000;
        if (age < expirys) {
          const response = new Response(new Blob([cached]));
          return response.json();
        }
        sessionStorage.removeItem(hashcode);
        sessionStorage.removeItem(`${hashcode}:timestamp`);
      }
    }
    return fetch(url, newOptions)
      .then(checkStatus)
      .then(response => {
        for (var pair of response.headers.entries()) {
          if(pair[0]=="base.session.id"){
            localStorage.setItem("TOKEN",pair[1]);
          }
        }
        let res = response.json();
        return res.then(data => {
          if(url.indexOf("import") != -1){
            let result = data.data.dataList ? data.data.dataList : [],
                fileName = data.data.fileName ? data.data.fileName : "";
            const args = {
              message: `${fileName}的导入信息`,
              description:<div>
              {
                result && result.length != 0 ?
                  <Alert
                    style={{ marginTop: 20 }}
                    message="错误信息"
                    description={
                      <div style={{height:400,overflow:"auto"}}>
                        {
                          result.map((item, i) => {
                            return <p key={i} style={{ padding: 4, margin: 0 }}>{item.name}: <span style={{ color: "red" }}>{item.error}</span> </p>
                          })
                        }
                      </div>
                    }
                    type="error"
                    showIcon
                    closable
                  /> : <a>{fileName}导入成功</a>
              }
            </div>,
            duration: 0,
            };
            notification.open(args);
          }
          //权限
          if(data.code === "0001" && url.indexOf("findByUserid")==-1){
            window.g_app._store.dispatch({ //redux
              type: 'login/logout',
            }).then(()=>{
              message.destroy();
            })
          }
          if (data.code !== "0000" ) {
            if(data.msg){
              message.destroy();
              message.error(data.msg);
            }
          }
          return data;
        });
      })
      .catch(e => {
        const status = e.name;
        if (status === 401) {
          // @HACK
          /* eslint-disable no-underscore-dangle */
          window.g_app._store.dispatch({
            type: 'login/logout',
          });
          return;
        }
        // environment should not be used
        if (status === 403) {
          router.push('/exception/403');
          return;
        }
        if (status <= 504 && status >= 500) {
          router.push('/exception/500');
          return;
        }
        if (status >= 404 && status < 422) {
          router.push('/exception/404');
        }
      });
  }
  