// ==UserScript==
// @name         CorocoroDownloader
// @namespace    https://github.com/Timesient/manga-download-scripts
// @version      0.6
// @license      GPL-3.0
// @author       Timesient
// @description  Manga downloader for corocoro.jp
// @icon         https://www.corocoro.jp/assets/app-icon/favicon.png
// @homepageURL  https://greasyfork.org/scripts/513508-corocorodownloader
// @supportURL   https://github.com/Timesient/manga-download-scripts/issues
// @match        https://www.corocoro.jp/*
// @require      https://unpkg.com/axios@0.27.2/dist/axios.min.js
// @require      https://unpkg.com/jszip@3.7.1/dist/jszip.min.js
// @require      https://unpkg.com/file-saver@2.0.5/dist/FileSaver.min.js
// @require      https://update.greasyfork.org/scripts/451810/1398192/ImageDownloaderLib.js
// @grant        GM_info
// @grant        GM_xmlhttpRequest
// ==/UserScript==
(async function(axios, JSZip, saveAs, ImageDownloader) {
'use strict';
// reload page when enter or leave chapter
const re = /https:\/\/www.corocoro\.jp\/chapter\/\d+\/viewer/;
const oldHref = window.location.href;
const timer = setInterval(() => {
const newHref = window.location.href;
if (newHref === oldHref) return;
if (re.test(newHref) || re.test(oldHref)) {
clearInterval(timer);
window.location.reload();
}
}, 200);
// return if not reading chapter now
if (!re.test(oldHref)) return;
// add info
const infoElement = document.createElement('span');
infoElement.innerHTML = `如果下载面板不出现，请确保阅读器处于双页模式，然后点击下一页。<br>If the download panel does not appear, please make sure the viewer is in double-page mode, then go next page.`;
infoElement.style = `position: fixed; top: 12px; left: 72px; padding: 8px 10px; background-color: #000; border-radius: 4px; color: #FFF; font-family: Microsoft YaHei, PingFang SC; font-size: 12px;`;
document.body.appendChild(infoElement);
// try to capture data of pages
let pages;
const originPush = Array.prototype.push;
Array.prototype.push = function() {
const target = arguments[0];
if (
pages === undefined
&& target instanceof Array
&& target.length > 0
&& target.some(item => item?.side === 'center')
) {
pages = this.flat().map(item => ({ src: item.src.url, crypto: item.src.crypto })).filter(item => item.src && item.crypto);
}
return originPush.apply(this, arguments);
}
// wait until data of pages being captured
await new Promise(resolve => {
const timer = setInterval(() => {
if (pages) { infoElement.remove(); clearInterval(timer); resolve(); }
}, 200);
});
// get title
const mangaTitle = document.querySelector('div.flex.flex-col:has(p):has(h3) > p')?.textContent;
const chapterTitle = document.querySelector('div.flex.flex-col:has(p):has(h3) > h3')?.textContent;
const title = (mangaTitle && chapterTitle) ? `${mangaTitle} ${chapterTitle}` : document.title.split(' | ').shift();
// setup ImageDownloader
ImageDownloader.init({
maxImageAmount: pages.length,
getImagePromises,
title
});
// collect promises of image
function getImagePromises(startNum, endNum) {
return pages
.slice(startNum - 1, endNum)
.map(page => getDecryptedImage(page)
.then(ImageDownloader.fulfillHandler)
.catch(ImageDownloader.rejectHandler)
);
}
// get promise of decrypted image
async function getDecryptedImage(page) {
const unhex = (hexString) => new Uint8Array(hexString.match(/.{1,2}/g).map((part) => parseInt(part, 16)));
const encryptedImageArrayBuffer = await axios.get(page.src, { responseType: 'arraybuffer' }).then(res => res.data);
const key = await crypto.subtle.importKey('raw', unhex(page.crypto.key), 'AES-CBC', false, ['decrypt']);
const decryptedImageArrayBuffer = await crypto.subtle.decrypt({ name: 'AES-CBC', iv: unhex(page.crypto.iv) }, key, encryptedImageArrayBuffer);
return decryptedImageArrayBuffer;
}
})(axios, JSZip, saveAs, ImageDownloader);