MangagunDownloader

Manga downloader for mangagun.net
换行
// ==UserScript==
// @name         MangagunDownloader
// @namespace    https://github.com/Timesient/manga-download-scripts
// @version      0.8
// @license      GPL-3.0
// @author       Timesient
// @description  Manga downloader for mangagun.net
// @icon         https://mangagun.net/favicon.ico
// @homepageURL  https://gf.qytechs.cn/scripts/453154-mangagundownloader
// @supportURL   https://github.com/Timesient/manga-download-scripts/issues
// @match        https://mangagun.net/nugm-*
// @require      https://unpkg.com/[email protected]/dist/axios.min.js
// @require      https://unpkg.com/[email protected]/dist/jszip.min.js
// @require      https://unpkg.com/[email protected]/dist/FileSaver.min.js
// @require      https://update.gf.qytechs.cn/scripts/451810/1398192/ImageDownloaderLib.js
// @grant        GM_info
// @grant        GM_xmlhttpRequest
// ==/UserScript==

(async function(axios, JSZip, saveAs, ImageDownloader) {
  'use strict';

  // get title
  const title = window.location.pathname.replace('/nugm-', '').replace('.html', '');

  // get url of images
  const imageURLs = await fetch(window.location.href)
    .then(res => res.text())
    .then(html => (new DOMParser()).parseFromString(html, 'text/html'))
    .then(dom => Array.from(dom.querySelectorAll('img.chapter-img')).map(imageElement => window.atob(imageElement.dataset.img)));

  // setup ImageDownloader
  ImageDownloader.init({
    maxImageAmount: imageURLs.length,
    getImagePromises,
    title
  });

  // collect promises of image
  function getImagePromises(startNum, endNum) {
    return imageURLs
      .slice(startNum - 1, endNum)
      .map(url => getImage(url)
        .then(ImageDownloader.fulfillHandler)
        .catch(ImageDownloader.rejectHandler)
      );
  }

  // get promise of image
  function getImage(url) {
    return new Promise(resolve => {
      GM_xmlhttpRequest({
        method: 'GET',
        url,
        responseType: 'arraybuffer',
        onload: res => resolve(res.response)
      });
    });
  }

})(axios, JSZip, saveAs, ImageDownloader);
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