Download manga from h2h.
// ==UserScript==
// @name H2H Download
// @namespace http://github.com/ZIDOUZI/H2H
// @version 0.0.1
// @description Download manga from h2h.
// @author ZIDOUZI
// @match https://htoh.asia/comic/*
// @icon https://htoh.asia/favicon.ico
// @require https://cdn.bootcss.com/jszip/3.1.5/jszip.min.js
// @license GPL3.0
// ==/UserScript==
(function () {
'use strict';
var list = document.querySelector('.col-lg-2>ul');
if (!list) return;
list.appendChild(createDownloadButton());
function createDownloadButton() {
var listItem = document.createElement('li');
var downloadButton = document.createElement('a');
downloadButton.textContent = 'Download All';
downloadButton.onclick = downloadAll;
listItem.appendChild(downloadButton);
return listItem;
}
// create a zip archive and download all images
async function downloadAll() {
var zip = new JSZip();
var urls = Array.from(document.querySelector('.gallery-container').querySelectorAll('.img-responsive')).map(img => img.src);
for (var i = 0; i < urls.length; i++) {
if (i === 0) continue;
if (urls[i] === '') {
urls[i] = urls[i - 1].replace(/\/(\d+)\./, (m, d) => Number(d) == i ? `/${(i + 1).toString().padStart(d.length, '0')}.` : m);
}
}
Promise.all(
urls.map(
async url => zip.file(url.substring(url.lastIndexOf('/') + 1), await download(url), { binary: true })
)
).then(() => {
zip.comment = `Downloaded from ${location.href}\nat ${new Date().toLocaleString()}`;
zip.generateAsync({ type: 'blob' }).then(function (content) {
var link = document.createElement('a');
link.href = URL.createObjectURL(content);
link.download = 'manga.zip';
link.click();
});
}).catch(error => {
console.error(error);
window.alert(error.message);
});
}
// wrap for GM_xmlhttpRequest
async function download(url) {
return await fetch(url).then(response => {
if (!response.ok) {
throw new Error(`Failed to download image, status: ${response.status}, url: ${url}`);
}
return response.blob();
});
}
})();