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Download Chapters from OmegaScans
// ==UserScript==
// @name OmegaScans Downloader
// @namespace Add Download Button
// @version 1.0
// @description Download Chapters from OmegaScans
// @author TRxLEGION
// @license MIT
// @match https://omegascans.org/*
// @icon https://omegascans.org/favicon.ico
// @grant GM_xmlhttpRequest
// @grant GM_download
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip/3.7.1/jszip.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/2.0.5/FileSaver.min.js
// ==/UserScript==
(function() {
'use strict';
function getChapterNumber() {
const url = window.location.href;
const match = url.match(/chapter-(\d+)/);
if (match && match[1]) {
return match[1];
}
return null;
}
function scrapeImages() {
const imageUrls = [];
const images = document.querySelectorAll('img');
images.forEach(img => {
let url = img.dataset.src || img.src;
if (url && url.endsWith('.jpg')) {
imageUrls.push(url);
}
});
return imageUrls;
}
function downloadImagesAsCBZ(imageUrls) {
const zip = new JSZip();
let count = 0;
imageUrls.forEach(url => {
GM_xmlhttpRequest({
method: "GET",
url: url,
responseType: "blob",
onload: function(response) {
const fileName = url.substring(url.lastIndexOf("/") + 1);
zip.file(fileName, response.response);
count++;
if (count === imageUrls.length) {
zip.generateAsync({ type: "blob" })
.then(function(content) {
const chapterNumber = getChapterNumber();
const filename = chapterNumber ? `chapter ${chapterNumber}.cbz` : 'chapter.cbz';
saveAs(content, filename);
});
}
},
onerror: function(error) {
console.error("Error downloading image: " + url, error);
}
});
});
}
function addDownloadButton() {
const button = document.createElement('button');
button.classList.add('Btn');
button.innerHTML = `
<svg xmlns="http://www.w3.org/2000/svg" height="1em" viewBox="0 0 384 512" class="svgIcon">
<path d="M169.4 470.6c12.5 12.5 32.8 12.5 45.3 0l160-160c12.5-12.5 12.5-32.8 0-45.3s-32.8-12.5-45.3 0L224 370.8 224 64c0-17.7-14.3-32-32-32s-32 14.3-32 32l0 306.7L54.6 265.4c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3l160 160z"></path>
</svg>
<span class="icon2"></span>
`;
button.style.position = 'fixed';
button.style.top = '10px';
button.style.left = '10px';
button.style.zIndex = 9999;
button.style.cursor = 'pointer';
button.style.border = 'none';
button.onclick = function() {
const originalIcon = button.innerHTML;
button.innerHTML = `
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" class="spinner-icon">
<circle cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4" fill="none" stroke-linecap="round" stroke-dasharray="60" stroke-dashoffset="20" transform="rotate(90 12 12)">
<animate attributeName="stroke-dashoffset" values="60;0;60" dur="2s" keyTimes="0;0.5;1" repeatCount="indefinite"></animate>
</circle>
</svg>
`;
button.style.transform = 'scale(0.9)';
const imageUrls = scrapeImages();
if (imageUrls.length > 0) {
downloadImagesAsCBZ(imageUrls);
} else {
alert('No images found!');
}
setTimeout(() => {
button.innerHTML = originalIcon;
button.style.transform = 'scale(1)';
}, 2000);
};
if (!document.querySelector('#download-button')) {
button.id = 'download-button';
document.body.appendChild(button);
}
}
window.addEventListener('load', function() {
addDownloadButton();
});
const observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.type === 'childList') {
addDownloadButton();
}
});
});
observer.observe(document.body, {
childList: true,
subtree: true
});
const style = document.createElement('style');
style.innerHTML = `
.Btn {
width: 50px;
height: 50px;
border: 2px solid rgb(214, 214, 214);
border-radius: 15px;
background-color: rgb(255, 255, 255);
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
cursor: pointer;
position: relative;
transition-duration: 0.3s;
box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.11);
}
.svgIcon {
fill: rgb(70, 70, 70);
}
.icon2 {
width: 18px;
height: 5px;
border-bottom: 2px solid rgb(70, 70, 70);
border-left: 2px solid rgb(70, 70, 70);
border-right: 2px solid rgb(70, 70, 70);
}
.Btn:hover {
background-color: rgb(51, 51, 51);
transition-duration: 0.3s;
}
.Btn:hover .icon2 {
border-bottom: 2px solid rgb(235, 235, 235);
border-left: 2px solid rgb(235, 235, 235);
border-right: 2px solid rgb(235, 235, 235);
}
.Btn:hover .svgIcon {
fill: rgb(255, 255, 255);
animation: slide-in-top 1s linear infinite;
}
@keyframes slide-in-top {
0% {
transform: translateY(-10px);
opacity: 0;
}
100% {
transform: translateY(0px);
opacity: 1;
}
}
`;
document.head.appendChild(style);
})();