mangalib script to download images and open next chapter

mangalib_images.js

// ==UserScript==
// @name         MangaLib - Auto Download and Navigate
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Automatically download content and navigate to the next page
// @author       Geor Kasapidi
// @match        https://mangalib.org/*
// @grant        none
// ==/UserScript==

(async function() {
    'use strict';

    // Ensure the required variables are present
    if (typeof window.__pg === 'undefined' || typeof window.__info === 'undefined') {
        console.error('Required variables are not defined on this page.');
        return;
    }

    await new Promise(r => setTimeout(r, 100));

    // Iterate through the pages and download content
    for (const page of window.__pg) {
        try {
            const blob = await fetch(window.__info.servers[window.__info.img.server] + window.__info.img.url + page.u)
            .then(res => res.blob());
            const blobUrl = URL.createObjectURL(blob);
            const a = document.createElement("a");
            a.href = blobUrl;
            a.download = window.__info.current.number + '_' + page.p + '.' + page.u.split('.').pop();
            document.body.appendChild(a);
            a.click();
            document.body.removeChild(a);
            await new Promise(r => setTimeout(r, 20));
        } catch (error) {
            console.error('Error downloading:', error);
        }
    }

    // Navigate to the next page
    if (window.__info.next && window.__info.next.url) {
        await new Promise(r => setTimeout(r, 500));
        window.location.href = window.__info.next.url;
    } else {
        console.error('Next page URL is not defined.');
    }
})();