// ==UserScript==
// @name         GanmaDownloader
// @namespace    https://github.com/Timesient/manga-download-scripts
// @version      0.9
// @license      GPL-3.0
// @author       Timesient
// @description  Manga downloader for ganma.jp
// @icon         https://ganma.jp/web/favicon.ico
// @homepageURL  https://greasyfork.org/scripts/451869-ganmadownloader
// @supportURL   https://github.com/Timesient/manga-download-scripts/issues
// @match        https://ganma.jp/*
// @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.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:\/\/ganma\.jp\/web\/reader\/(?<alias>.*)\/(?<episodeID>[a-z0-9]{8}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12})\/\d+/;
const oldHref = window.location.href;
const timer = setInterval(() => {
const newHref = window.location.href;
if (re.exec(newHref) && re.exec(oldHref) && re.exec(newHref).groups.episodeID === re.exec(oldHref).groups.episodeID) 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;
// init data receiver
window._configData = [];
// run scripts to get string of config
const configString = await fetch(window.location.href)
.then(res => res.text())
.then(text => (new DOMParser()).parseFromString(text, 'text/html'))
.then(dom => Array.from(dom.body.querySelectorAll('script')))
.then(scriptElements => scriptElements.forEach(ele => eval(ele.textContent.replace('self.__next_f.push([', 'window._configData.push(['))))
.then(_ => window._configData.toString());
// get url of images
let urls = JSON.parse(stringSlicer(configString, `"singleModeDisplayUnits":`, ']')).map(item => item.url);
try {
const { imageURL: afterwordImageURL } = JSON.parse(stringSlicer(configString, `"afterword":`, '}'));
if (typeof afterwordImageURL === 'string' && afterwordImageURL.startsWith('https://')) urls = urls.concat(afterwordImageURL);
} catch (error) {
console.log(error);
console.log('no afterword image');
}
// get title
const title = document.title.split(' - ').slice(0, 2).join(' ');
// setup ImageDownloader
ImageDownloader.init({
maxImageAmount: urls.length,
getImagePromises,
title
});
// collect promises of image
function getImagePromises(startNum, endNum) {
return urls
.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)
});
});
}
// slice string according to text content
function stringSlicer(string, startText, endText) {
const startIndex = string.indexOf(startText) + startText.length;
const endIndex = string.indexOf(endText, startIndex);
return string.slice(startIndex, endIndex + endText.length);
}
})(axios, JSZip, saveAs, ImageDownloader);