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duifene-download

duifene 对分易课程资源下载

目前为 2024-06-17 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         duifene-download
  3. // @version      0.1.1
  4. // @description  duifene 对分易课程资源下载
  5. // @author       WiSHao
  6. // @match        https://www.duifene.com/_FileManage/PC/StFileManage.aspx
  7. // @icon         https://www.duifene.com/favicon.ico
  8. // @run-at       document-body
  9. // @license      ISC
  10. // @grant        none
  11. // @namespace    https://greasyfork.org/users/1103837
  12. // ==/UserScript==
  13.  
  14. (function () {
  15.     'use strict';
  16.  
  17.     // 每100毫秒检查一次，确保要操作的元素真加载出来了，之后再执行某回调操作
  18.     function waitForElement(selector, callback) {
  19.         const interval = setInterval(function () {
  20.             const element = document.querySelector(selector);
  21.             if (element) {
  22.                 clearInterval(interval);
  23.                 callback(element);
  24.             }
  25.         }, 100);
  26.     }
  27.  
  28.     // 下载函数
  29.     function download(url, name) {
  30.         fetch(url)
  31.             .then((response) => response.blob())
  32.             .then((blob) => {
  33.                 const blobUrl = window.URL.createObjectURL(blob);
  34.  
  35.                 console.log(url.split('/'));
  36.                 // 提取 URL 中的文件名
  37.                 let filename = name || url.split('/').pop();
  38.  
  39.                 const a = document.createElement('a');
  40.                 a.href = blobUrl;
  41.                 a.download = filename;
  42.                 document.body.appendChild(a);
  43.                 a.click();
  44.                 document.body.removeChild(a);
  45.                 window.URL.revokeObjectURL(blobUrl); // 清理资源
  46.             })
  47.             .catch((e) => console.error('下载失败:', e));
  48.     }
  49.  
  50.     // 改所有禁止下载为下载的函数
  51.     function todo(ele) {
  52.         if (ele) console.log('所检查元素存在，如下:', ele);
  53.  
  54.         const fileListNode = document.querySelectorAll('#FilesList > div');
  55.         const fileListArray = Array.from(fileListNode);
  56.         let noDownloading = false;
  57.         fileListArray.forEach((item) => {
  58.             // 获取带下载功能那块的div
  59.             const actionDOM = item.querySelector('.action');
  60.             if (!actionDOM || !item.dataset.path) {
  61.                 noDownloading = false;
  62.                 return;
  63.             }
  64.             noDownloading = setDownLoadButton(actionDOM, item.dataset.path);
  65.         });
  66.  
  67.         if (!noDownloading) {
  68.             alert('没有禁止下载，不用改啦');
  69.             return;
  70.         }
  71.         alert('确实有禁止下载，已解开');
  72.     }
  73.  
  74.     function setDownLoadButton(actionDOM, downloadPath) {
  75.         // 遍历其中的所有元素
  76.         const elements = actionDOM.querySelectorAll('*');
  77.         for (let i = 0; i < elements.length; i++) {
  78.             let element = elements[i];
  79.             // 检查所有属性
  80.             for (let j = 0; j < element.attributes.length; j++) {
  81.                 let attr = element.attributes[j];
  82.                 if (attr.value.includes('禁止')) {
  83.                     console.log(`找到属性包含'禁止'的元素`, element);
  84.                     element.innerHTML = '草泥马我就要下载';
  85.                     element.style.color = 'red';
  86.                     element.style.cursor = 'pointer';
  87.                     element.addEventListener('mouseenter', function () {
  88.                         element.style.textDecoration = 'underline';
  89.                     });
  90.                     element.addEventListener('mouseleave', function () {
  91.                         element.style.textDecoration = 'none';
  92.                     });
  93.                     element.addEventListener('click', () => download(downloadPath));
  94.                     return true;
  95.                 }
  96.             }
  97.             // 检查文本内容
  98.             if (element.textContent.includes('禁止')) {
  99.                 console.log(`找到属性包含'禁止'的元素`, element);
  100.                 element.innerHTML = '草泥马我就要下载';
  101.                 element.style.color = 'red';
  102.                 element.style.cursor = 'pointer';
  103.                 element.addEventListener('mouseenter', function () {
  104.                     element.style.textDecoration = 'underline';
  105.                 });
  106.                 element.addEventListener('mouseleave', function () {
  107.                     element.style.textDecoration = 'none';
  108.                 });
  109.                 element.addEventListener('click', () => download(downloadPath));
  110.                 return true;
  111.             }
  112.         }
  113.  
  114.         return false;
  115.     }
  116.  
  117.     // 批量下载函数
  118.     function autoDownload() {
  119.         try {
  120.             const fileListNode = document.querySelectorAll('#FilesList > div');
  121.             const fileListArray = Array.from(fileListNode);
  122.             if (fileListArray.length === 0) {
  123.                 alert('没有可下载的文件');
  124.                 return;
  125.             }
  126.             alert('开始批量下载文件');
  127.             fileListArray.forEach((item, index) => {
  128.                 // 获取带下载功能那块的div
  129.                 const actionDOM = item.querySelector('.action');
  130.                 if (!actionDOM || !item.dataset.path) {
  131.                     return;
  132.                 }
  133.                 setTimeout(() => {
  134.                     console.log(`${index}号文件已开始下载`);
  135.                     download(item.dataset.path);
  136.                 }, index * 1000);
  137.             });
  138.         } catch (error) {
  139.             alert('批量下载出错', error);
  140.         }
  141.     }
  142.  
  143.     // 点击重设所有下载的按钮
  144.     function setDownLoad(ele) {
  145.         ele.style.position = 'relative';
  146.  
  147.         const btn = document.createElement('div');
  148.         btn.textContent = '设置下载按钮';
  149.         btn.style.width = '120px';
  150.         btn.style.height = '30px';
  151.         btn.style.borderRadius = '5px';
  152.         btn.style.lineHeight = '30px';
  153.         btn.style.textAlign = 'center';
  154.         btn.style.fontSize = '14px';
  155.         btn.style.fontWeight = 'bold';
  156.         btn.style.backgroundColor = '#8CF9FB';
  157.         btn.style.color = 'white';
  158.         btn.style.cursor = 'pointer';
  159.         btn.style.position = 'absolute';
  160.         btn.style.left = '200px';
  161.         btn.addEventListener('mouseenter', function () {
  162.             btn.style.backgroundColor = '#4BC4D0';
  163.         });
  164.         btn.addEventListener('mouseleave', function () {
  165.             btn.style.backgroundColor = '#8CF9FB';
  166.         });
  167.         ele.appendChild(btn);
  168.         btn.addEventListener('click', () => todo(ele));
  169.     }
  170.  
  171.     // 批量下载按钮
  172.     function allDownLoad(ele) {
  173.         const btn = document.createElement('div');
  174.         btn.textContent = '批量下载文件';
  175.         btn.style.width = '120px';
  176.         btn.style.height = '30px';
  177.         btn.style.borderRadius = '5px';
  178.         btn.style.lineHeight = '30px';
  179.         btn.style.textAlign = 'center';
  180.         btn.style.fontSize = '14px';
  181.         btn.style.fontWeight = 'bold';
  182.         btn.style.backgroundColor = '#8CF9FB';
  183.         btn.style.color = 'white';
  184.         btn.style.cursor = 'pointer';
  185.         btn.style.position = 'absolute';
  186.         btn.style.left = '340px';
  187.         btn.addEventListener('mouseenter', function () {
  188.             btn.style.backgroundColor = '#4BC4D0';
  189.         });
  190.         btn.addEventListener('mouseleave', function () {
  191.             btn.style.backgroundColor = '#8CF9FB';
  192.         });
  193.         ele.appendChild(btn);
  194.         btn.addEventListener('click', autoDownload);
  195.     }
  196.  
  197.     // 页面加载完毕后执行入口
  198.     window.addEventListener('load', () => {
  199.         waitForElement('.btnGroup', setDownLoad);
  200.         waitForElement('.btnGroup', allDownLoad);
  201.         waitForElement('#FilesList > div:nth-child(1) > div.fileName > a', todo);
  202.     });
  203. })();