Youpaiyun realizes file upload and delete functions

const express = require("express");
const app = express();
const axios = require('axios');
('port',  || 8082);
// Static resource directory, placed here in the root directory, this is not allowed in the production environment((__dirname));
// Start a server with port 8082(('port'), () => {
 ("http://localhost:" + ('port'));
});

const crypto = require("crypto");
// MD5
function MD5(value) {
 return crypto
  .createHash("md5")
  .update(value)
  .digest("hex");
}
// Base64
function base64(value) {
 return (value).toString("base64");
}
// hmacsha1
function hmacsha1(secret, value) {
  return ('sha1', secret).update(value, 'utf-8').digest().toString('base64');
}

const date = new Date().toGMTString();
const bucketname = ""; // Space nameconst key = ""; // Operatorconst secret = ""; // passwordconst upyunUrl = '/'
// Upload
("/api/token/upload", (req, res) => {
 let fileName = (() * 100000000) >>> 0;
 let expiration = ((() / 1000) >>> 0) + 30 * 60; // The expiration time of the request, UNIX UTC timestamp, unit seconds.  It is recommended to set to 30 minutes /api/form_api/ let method = "POST";
 let policy = base64(
  ({
   bucket: bucketname,
   // "save-key": "/" + fileName + "{.suffix}",
   "save-key": "/{filename}{.suffix}",
   expiration: expiration
  })
 );
 let authorization =
  "UPYUN " +
  key +
  ":" +
  hmacsha1(MD5(secret), method + "&/" + bucketname + "&" + policy);
 ({
  msg: "OK",
  code: 200,
  data: {
   authorization: authorization,
   policy: policy
  }
 });
});
// Delete
('/api/token/del', (req, res) => {
 let item = ;
 let method = "DELETE"
 let authorization = "UPYUN " +
  key +
  ":" + 
  hmacsha1(MD5(secret), method + '&/' + bucketname + item + '&'+ date);
 axios({
  url: upyunUrl + bucketname + item,
  method: 'DELETE',
  headers: {
   'Authorization': authorization,
   'Date': date
  }
 }).then(response => {
  ({
   msg: "OK",
   code: 200,
   data: {}
  }); 
 }).catch(err => {
  ('err', err)
 })
})

const cors = require('cors');

// CORS @see /expressjs/cors
(cors());

<link rel="stylesheet" type="text/css" href="/[email protected]/dist/css/">
<script src="/axios/dist/"></script>
<!-- HTML -->
<div >
 <div class="card" style="margin: 50px auto; width: 300px;">
  <div class="card-body">
   <h5 class="card-title">UPYun Upload & Delete</h5>
   <div class="card-text">
    <div class="form-group">
     <label for="file">Upload</label>
     <input type="file"  class="form-control-file" @change="onChange">
     <div class="form-text text-muted">
      <ul>
        <li v-for="(item, index) in files">
         {{item}} <a href="javascript:;" rel="external nofollow" @click="onDel(item, index)">Del</a>
        </li>
      </ul>
     </div>
    </div>
   </div>
  </div>
 </div>
</div>

<script src="/[email protected]/dist/"></script>
<script src="/axios/dist/"></script>

const upUrl = '/' // +Space name, such as: /yun-temp  const baseApi = 'http://localhost:8082/api/'
  let uploadInput;
  let app = new Vue({
   el: '#app',
   data: {
    files: []
   },
   methods: {
    onChange: function () {
     getToken(token => {
      let formData = new FormData();
      ("file", [0])
      ('policy', )
      ("authorization", )
      axios({
       method: 'POST',
       url: upUrl,
       data: formData
      }).then(res => {
       res = res || {}
       if ( !== 200) {
        ('error')
        return
       }
       let data =  || {}
       ()
       alert('Success')
      }).catch(err => {
       (err);
      });
     });
    },
    onDel: function (item, index) {
     (index, 1)
     ({
      url: baseApi + 'token/del',
      method: 'GET',
      params: {
       item: encodeURI(item)
      }
     }).then(res => {
      alert('Deleted.')
     }).catch(err => {
      (err)
     })
    }
   },
   mounted () {
    uploadInput = $('file')
   }
  })
  // DOM gets the element  function $ (el) {
   return (el)
  }
  // Get token  function getToken (fn) {
   let token = ('token');
   token = (token) || {};
   let nowTime = ();
   if (nowTime <  &&  && ) {
    fn(token)
    return
   }
   axios({
    method: 'get',
    url: baseApi + 'token/upload'
   })
   .then(res => {
    let data =  || {}
    data =  || {}
    const authorization = 
    const policy = 
    const expired = ((() / 1000) >>> 0) + 30 * 60;
    token = {
     authorization,
     policy,
     expired
    }
    fn(token)
    ('token', (token))
   });
  }