minanagehsalalma/MoodleSlidesGrabber.js

## MoodleSlidesGrabber.js
(async function() {
    // --- CONFIGURATION ---
    const STORAGE_KEY = 'moodle_drive_v10_final';
    const CONCURRENCY = 5;

    // --- 1. OPEN UI ---
    const driveWindow = window.open("", "Course_Drive_Pro", "width=1280,height=900,scrollbars=yes");
    if (!driveWindow) { alert("Please allow popups!"); return; }

    driveWindow.document.write(`
        <html>
        <head>
            <title>Course Drive</title>
            <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
            <style>
                body { font-family: 'Segoe UI', Roboto, sans-serif; background: #f5f5f5; margin: 0; user-select: none; }

                /* HEADER */
                .header { background: white; padding: 12px 24px; border-bottom: 1px solid #e0e0e0; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
                .brand { display: flex; align-items: center; gap: 10px; font-size: 20px; color: #444; font-weight: 500; }

                .toolbar { display: flex; gap: 8px; align-items: center; }
                .divider { height: 24px; width: 1px; background: #ddd; margin: 0 8px; }

                .btn { display: flex; align-items: center; gap: 6px; border: none; background: transparent; padding: 8px 14px; border-radius: 6px; font-weight: 500; cursor: pointer; color: #555; transition: 0.1s; }
                .btn:hover { background: #eee; }
                .btn-primary { background: #1a73e8; color: white; }
                .btn-primary:hover { background: #1557b0; }
                .btn-toggle { border: 1px solid #ddd; }
                .btn-toggle.active { background: #e8f0fe; color: #1967d2; border-color: #1967d2; }
                .btn-dl { background: #188038; color: white; }
                .btn-dl:hover { background: #146c2e; }
                .btn-dl:disabled { background: #ccc; cursor: default; opacity: 0.8; }

                /* STATUS */
                .status-bar { padding: 6px 24px; background: #333; color: white; font-size: 12px; display: flex; justify-content: space-between; }

                /* GRID */
                .container { padding: 24px; }
                .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 20px; }

                /* CARD */
                .card {
                    background: white; border: 1px solid #ddd; border-radius: 8px;
                    display: flex; flex-direction: column; position: relative;
                    transition: all 0.2s; height: 220px; cursor: pointer; text-decoration: none; color: inherit;
                }
                .card:hover { transform: translateY(-3px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }

                /* Selection Mode */
                .card.selected { border: 2px solid #1a73e8; background: #f0f7ff; }
                .select-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 20; display: none; }
                .card.select-mode .select-overlay { display: block; }

                .check-icon { position: absolute; top: 8px; left: 8px; color: #1a73e8; display: none; z-index: 21; background: white; border-radius: 50%; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
                .card.selected .check-icon { display: block; }

                /* Preview */
                .preview { height: 120px; background: #f8f9fa; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid #eee; }
                .pdf-icon { font-size: 50px; color: #ea4335; }

                /* Info */
                .info { padding: 12px; display: flex; flex-direction: column; flex-grow: 1; }
                .name {
                    font-size: 13px; font-weight: 600; color: #333; line-height: 1.4;
                    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
                    overflow: hidden; margin-bottom: auto;
                }
                .meta { font-size: 11px; color: #666; display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }

                .badge { padding: 2px 6px; border-radius: 4px; font-weight: 700; font-size: 10px; background: #e0e0e0; }
                .badge.new { background: #d1e7dd; color: #0f5132; }

                /* Skeleton */
                .skeleton .name { background: #eee; color: transparent; border-radius: 4px; }
                .skeleton .meta span { background: #eee; color: transparent; border-radius: 4px; }
                .skeleton .pdf-icon { opacity: 0.2; }
            </style>
        </head>
        <body>
            <div class="header">
                <div class="brand">
                    <span class="material-icons" style="color:#fbbc04">folder_copy</span>
                    <span>Course Drive</span>
                </div>
                <div class="toolbar">
                    <button id="modeBtn" class="btn-toggle">
                        <span class="material-icons">check_circle</span> Select Mode
                    </button>
                    <div class="divider"></div>
                    <button id="allBtn" class="btn" style="display:none">Select All</button>
                    <button id="dlBtn" class="btn-dl" disabled style="display:none">
                        <span class="material-icons">download</span> Download (<span id="count">0</span>)
                    </button>
                    <div class="divider"></div>
                    <button id="scanBtn" class="btn-primary"><span class="material-icons">sync</span> Rescan</button>
                    <button id="resetBtn" style="color:#d93025"><span class="material-icons">delete</span></button>
                </div>
            </div>
            <div id="status" class="status-bar">Initializing...</div>
            <div class="container"><div id="grid" class="grid"></div></div>
        </body>
        </html>
    `);

    const doc = driveWindow.document;
    const grid = doc.getElementById('grid');
    const statusDiv = doc.getElementById('status');
    const modeBtn = doc.getElementById('modeBtn');
    const dlBtn = doc.getElementById('dlBtn');
    const allBtn = doc.getElementById('allBtn');
    const countSpan = doc.getElementById('count');

    // --- 2. STATE ---
    let isSelectMode = false;
    let selectedSet = new Set();
    let cardRegistry = [];

    // --- 3. UI FUNCTIONS ---
    function log(msg) { statusDiv.textContent = msg; }

    function toggleMode() {
        isSelectMode = !isSelectMode;
        if (isSelectMode) {
            modeBtn.classList.add('active');
            modeBtn.innerHTML = `<span class="material-icons">close</span> Exit Selection`;
            dlBtn.style.display = 'flex';
            allBtn.style.display = 'flex';
            cardRegistry.forEach(c => c.el.classList.add('select-mode'));
        } else {
            modeBtn.classList.remove('active');
            modeBtn.innerHTML = `<span class="material-icons">check_circle</span> Select Mode`;
            dlBtn.style.display = 'none';
            allBtn.style.display = 'none';
            cardRegistry.forEach(c => {
                c.el.classList.remove('select-mode');
                c.el.classList.remove('selected');
            });
            selectedSet.clear();
            updateCount();
        }
    }

    function toggleSelect(id) {
        const cardObj = cardRegistry[id];
        if (selectedSet.has(id)) {
            selectedSet.delete(id);
            cardObj.el.classList.remove('selected');
        } else {
            selectedSet.add(id);
            cardObj.el.classList.add('selected');
        }
        updateCount();
    }

    function updateCount() {
        countSpan.textContent = selectedSet.size;
        dlBtn.disabled = selectedSet.size === 0;
    }

    // --- 4. RENDERER ---
    function createSkeleton(id) {
        const el = doc.createElement('a');
        el.className = 'card skeleton';
        el.href = '#';
        el.innerHTML = `
            <div class="select-overlay"></div>
            <span class="material-icons check-icon">check_circle</span>
            <div class="preview"><span class="material-icons pdf-icon">picture_as_pdf</span></div>
            <div class="info">
                <div class="name">Loading file...</div>
                <div class="meta"><span>...</span><span>...</span></div>
            </div>
        `;

        // Handle Select Click
        el.querySelector('.select-overlay').onclick = (e) => {
            e.preventDefault(); e.stopPropagation();
            toggleSelect(id);
        };

        // Handle Normal Click
        el.onclick = (e) => {
            if(isSelectMode) { e.preventDefault(); toggleSelect(id); }
        };

        grid.appendChild(el);
        return el;
    }

    function updateCard(id, data, isCached) {
        const el = cardRegistry[id].el;
        el.classList.remove('skeleton');

        // --- DIRECT LINKING FIX ---
        // We set the HREF to the final PDF url so standard clicks work natively
        el.href = data.link;
        el.target = "_blank";

        const name = (data.title && data.title.length > 2 && !data.title.startsWith('Microsoft'))
            ? data.title
            : data.filename;

        el.querySelector('.name').textContent = name;
        el.querySelector('.name').title = name;
        el.querySelector('.meta').innerHTML = `
            <span>${data.pages} Pages</span>
            <span class="badge ${isCached ? '' : 'new'}">${isCached ? 'CACHE' : 'NEW'}</span>
        `;

        cardRegistry[id].data = data;
    }

    // --- 5. LOGIC ---
    function getCache() { try { return JSON.parse(localStorage.getItem(STORAGE_KEY) || '{}'); } catch { return {}; } }
    function saveCache(d) { localStorage.setItem(STORAGE_KEY, JSON.stringify(d)); }

    async function initPdf() {
        if (window.pdfjsLib) return;
        log("Loading Engine...");
        window.define = undefined; window.exports = undefined;
        const s = document.createElement('script');
        s.src = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js';
        s.crossOrigin = "anonymous";
        document.head.appendChild(s);
        await new Promise(r => {
            const i = setInterval(() => { if(window.pdfjsLib){ clearInterval(i); window.pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js'; r(); } }, 100);
        });
    }

    // --- 6. EXECUTION ---
    modeBtn.onclick = toggleMode;
    doc.getElementById('scanBtn').onclick = () => driveWindow.location.reload();
    doc.getElementById('resetBtn').onclick = () => { localStorage.removeItem(STORAGE_KEY); driveWindow.location.reload(); };

    doc.getElementById('allBtn').onclick = () => {
        const target = selectedSet.size !== cardRegistry.length;
        selectedSet.clear();
        cardRegistry.forEach((c, idx) => {
            if(c.data && target) { selectedSet.add(idx); c.el.classList.add('selected'); }
            else { c.el.classList.remove('selected'); }
        });
        updateCount();
    };

    doc.getElementById('dlBtn').onclick = async () => {
        const ids = Array.from(selectedSet);
        log(`Downloading ${ids.length} files...`);
        for(let i=0; i<ids.length; i++) {
            const data = cardRegistry[ids[i]].data;
            if(!data) continue;
            try {
                const r = await fetch(data.link);
                const b = await r.blob();
                const u = URL.createObjectURL(b);
                const a = doc.createElement('a');
                a.href = u;
                a.download = (data.title || data.filename).replace(/[^a-z0-9]/gi, '_') + '.pdf';
                doc.body.appendChild(a);
                a.click();
                a.remove();
                URL.revokeObjectURL(u);
                await new Promise(r => setTimeout(r, 500));
            } catch(e) {}
        }
        log("Download Complete.");
    };

    try {
        await initPdf();

        // --- KEY FIX: ID-BASED DEDUPLICATION ---
        const allLinks = Array.from(document.querySelectorAll('a[href*="/mod/resource/view.php"]'));
        const uniqueLinks = [];
        const seenIds = new Set();

        allLinks.forEach(link => {
            // Extract ?id=XXXX
            const match = link.href.match(/id=(\d+)/);
            if (match) {
                const id = match[1];
                if (!seenIds.has(id)) {
                    seenIds.add(id);
                    uniqueLinks.push(link);
                }
            }
        });

        log(`Found ${uniqueLinks.length} unique files. Generating grid...`);

        // Create Skeletons Immediately (Correct Count)
        uniqueLinks.forEach((link, idx) => {
            const el = createSkeleton(idx);
            cardRegistry.push({ id: idx, el: el, rawLink: link });
        });

        // Process Queue
        const cache = getCache();
        let index = 0;

        const worker = async () => {
            while(index < uniqueLinks.length) {
                const i = index++;
                const linkObj = uniqueLinks[i];
                const moodleUrl = linkObj.href;

                // 1. Try Cache
                if(cache[moodleUrl]) {
                    updateCard(i, cache[moodleUrl], true);
                    continue;
                }

                // 2. Fetch
                try {
                    // Fetch wrapper page to find real PDF URL
                    const r = await fetch(moodleUrl);
                    const t = await r.text();
                    const docParser = new DOMParser().parseFromString(t, 'text/html');
                    const pdfAnchor = docParser.querySelector('a[href$=".pdf"]');

                    if(pdfAnchor) {
                        const directLink = pdfAnchor.href;

                        // Count & Metadata
                        const task = window.pdfjsLib.getDocument(directLink);
                        const pdf = await task.promise;
                        const meta = await pdf.getMetadata();

                        const itemData = {
                            pages: pdf.numPages,
                            title: meta.info?.Title || "",
                            filename: decodeURIComponent(directLink.split('?')[0].split('/').pop()),
                            link: directLink
                        };

                        cache[moodleUrl] = itemData;
                        saveCache(cache);
                        updateCard(i, itemData, false);
                    } else {
                        // Not a PDF? Remove skeleton.
                        cardRegistry[i].el.remove();
                    }
                } catch(e) {
                    // Error? Leave skeleton or mark error
                    console.warn(e);
                }
            }
        };

        await Promise.all(Array(CONCURRENCY).fill(null).map(worker));
        log(`Scan Complete! Loaded ${uniqueLinks.length} files.`);

    } catch(e) {
        log("Error: " + e.message);
    }
})();
	(async function() {
	// --- CONFIGURATION ---
	const STORAGE_KEY = 'moodle_drive_v10_final';
	const CONCURRENCY = 5;

	// --- 1. OPEN UI ---
	const driveWindow = window.open("", "Course_Drive_Pro", "width=1280,height=900,scrollbars=yes");
	if (!driveWindow) { alert("Please allow popups!"); return; }

	driveWindow.document.write(`
	<html>
	<head>
	<title>Course Drive</title>
	<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
	<style>
	body { font-family: 'Segoe UI', Roboto, sans-serif; background: #f5f5f5; margin: 0; user-select: none; }

	/* HEADER */
	.header { background: white; padding: 12px 24px; border-bottom: 1px solid #e0e0e0; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
	.brand { display: flex; align-items: center; gap: 10px; font-size: 20px; color: #444; font-weight: 500; }

	.toolbar { display: flex; gap: 8px; align-items: center; }
	.divider { height: 24px; width: 1px; background: #ddd; margin: 0 8px; }

	.btn { display: flex; align-items: center; gap: 6px; border: none; background: transparent; padding: 8px 14px; border-radius: 6px; font-weight: 500; cursor: pointer; color: #555; transition: 0.1s; }
	.btn:hover { background: #eee; }
	.btn-primary { background: #1a73e8; color: white; }
	.btn-primary:hover { background: #1557b0; }
	.btn-toggle { border: 1px solid #ddd; }
	.btn-toggle.active { background: #e8f0fe; color: #1967d2; border-color: #1967d2; }
	.btn-dl { background: #188038; color: white; }
	.btn-dl:hover { background: #146c2e; }
	.btn-dl:disabled { background: #ccc; cursor: default; opacity: 0.8; }

	/* STATUS */
	.status-bar { padding: 6px 24px; background: #333; color: white; font-size: 12px; display: flex; justify-content: space-between; }

	/* GRID */
	.container { padding: 24px; }
	.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 20px; }

	/* CARD */
	.card {
	background: white; border: 1px solid #ddd; border-radius: 8px;
	display: flex; flex-direction: column; position: relative;
	transition: all 0.2s; height: 220px; cursor: pointer; text-decoration: none; color: inherit;
	}
	.card:hover { transform: translateY(-3px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }

	/* Selection Mode */
	.card.selected { border: 2px solid #1a73e8; background: #f0f7ff; }
	.select-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 20; display: none; }
	.card.select-mode .select-overlay { display: block; }

	.check-icon { position: absolute; top: 8px; left: 8px; color: #1a73e8; display: none; z-index: 21; background: white; border-radius: 50%; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
	.card.selected .check-icon { display: block; }

	/* Preview */
	.preview { height: 120px; background: #f8f9fa; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid #eee; }
	.pdf-icon { font-size: 50px; color: #ea4335; }

	/* Info */
	.info { padding: 12px; display: flex; flex-direction: column; flex-grow: 1; }
	.name {
	font-size: 13px; font-weight: 600; color: #333; line-height: 1.4;
	display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
	overflow: hidden; margin-bottom: auto;
	}
	.meta { font-size: 11px; color: #666; display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }

	.badge { padding: 2px 6px; border-radius: 4px; font-weight: 700; font-size: 10px; background: #e0e0e0; }
	.badge.new { background: #d1e7dd; color: #0f5132; }

	/* Skeleton */
	.skeleton .name { background: #eee; color: transparent; border-radius: 4px; }
	.skeleton .meta span { background: #eee; color: transparent; border-radius: 4px; }
	.skeleton .pdf-icon { opacity: 0.2; }
	</style>
	</head>
	<body>
	<div class="header">
	<div class="brand">
	<span class="material-icons" style="color:#fbbc04">folder_copy</span>
	<span>Course Drive</span>
	</div>
	<div class="toolbar">
	<button id="modeBtn" class="btn-toggle">
	<span class="material-icons">check_circle</span> Select Mode
	</button>
	<div class="divider"></div>
	<button id="allBtn" class="btn" style="display:none">Select All</button>
	<button id="dlBtn" class="btn-dl" disabled style="display:none">
	<span class="material-icons">download</span> Download (<span id="count">0</span>)
	</button>
	<div class="divider"></div>
	<button id="scanBtn" class="btn-primary"><span class="material-icons">sync</span> Rescan</button>
	<button id="resetBtn" style="color:#d93025"><span class="material-icons">delete</span></button>
	</div>
	</div>
	<div id="status" class="status-bar">Initializing...</div>
	<div class="container"><div id="grid" class="grid"></div></div>
	</body>
	</html>
	`);

	const doc = driveWindow.document;
	const grid = doc.getElementById('grid');
	const statusDiv = doc.getElementById('status');
	const modeBtn = doc.getElementById('modeBtn');
	const dlBtn = doc.getElementById('dlBtn');
	const allBtn = doc.getElementById('allBtn');
	const countSpan = doc.getElementById('count');

	// --- 2. STATE ---
	let isSelectMode = false;
	let selectedSet = new Set();
	let cardRegistry = [];

	// --- 3. UI FUNCTIONS ---
	function log(msg) { statusDiv.textContent = msg; }

	function toggleMode() {
	isSelectMode = !isSelectMode;
	if (isSelectMode) {
	modeBtn.classList.add('active');
	modeBtn.innerHTML = `<span class="material-icons">close</span> Exit Selection`;
	dlBtn.style.display = 'flex';
	allBtn.style.display = 'flex';
	cardRegistry.forEach(c => c.el.classList.add('select-mode'));
	} else {
	modeBtn.classList.remove('active');
	modeBtn.innerHTML = `<span class="material-icons">check_circle</span> Select Mode`;
	dlBtn.style.display = 'none';
	allBtn.style.display = 'none';
	cardRegistry.forEach(c => {
	c.el.classList.remove('select-mode');
	c.el.classList.remove('selected');
	});
	selectedSet.clear();
	updateCount();
	}
	}

	function toggleSelect(id) {
	const cardObj = cardRegistry[id];
	if (selectedSet.has(id)) {
	selectedSet.delete(id);
	cardObj.el.classList.remove('selected');
	} else {
	selectedSet.add(id);
	cardObj.el.classList.add('selected');
	}
	updateCount();
	}

	function updateCount() {
	countSpan.textContent = selectedSet.size;
	dlBtn.disabled = selectedSet.size === 0;
	}

	// --- 4. RENDERER ---
	function createSkeleton(id) {
	const el = doc.createElement('a');
	el.className = 'card skeleton';
	el.href = '#';
	el.innerHTML = `
	<div class="select-overlay"></div>
	<span class="material-icons check-icon">check_circle</span>
	<div class="preview"><span class="material-icons pdf-icon">picture_as_pdf</span></div>
	<div class="info">
	<div class="name">Loading file...</div>
	<div class="meta"><span>...</span><span>...</span></div>
	</div>
	`;

	// Handle Select Click
	el.querySelector('.select-overlay').onclick = (e) => {
	e.preventDefault(); e.stopPropagation();
	toggleSelect(id);
	};

	// Handle Normal Click
	el.onclick = (e) => {
	if(isSelectMode) { e.preventDefault(); toggleSelect(id); }
	};

	grid.appendChild(el);
	return el;
	}

	function updateCard(id, data, isCached) {
	const el = cardRegistry[id].el;
	el.classList.remove('skeleton');

	// --- DIRECT LINKING FIX ---
	// We set the HREF to the final PDF url so standard clicks work natively
	el.href = data.link;
	el.target = "_blank";

	const name = (data.title && data.title.length > 2 && !data.title.startsWith('Microsoft'))
	? data.title
	: data.filename;

	el.querySelector('.name').textContent = name;
	el.querySelector('.name').title = name;
	el.querySelector('.meta').innerHTML = `
	<span>${data.pages} Pages</span>
	<span class="badge ${isCached ? '' : 'new'}">${isCached ? 'CACHE' : 'NEW'}</span>
	`;

	cardRegistry[id].data = data;
	}

	// --- 5. LOGIC ---
	function getCache() { try { return JSON.parse(localStorage.getItem(STORAGE_KEY) \|\| '{}'); } catch { return {}; } }
	function saveCache(d) { localStorage.setItem(STORAGE_KEY, JSON.stringify(d)); }

	async function initPdf() {
	if (window.pdfjsLib) return;
	log("Loading Engine...");
	window.define = undefined; window.exports = undefined;
	const s = document.createElement('script');
	s.src = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js';
	s.crossOrigin = "anonymous";
	document.head.appendChild(s);
	await new Promise(r => {
	const i = setInterval(() => { if(window.pdfjsLib){ clearInterval(i); window.pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js'; r(); } }, 100);
	});
	}

	// --- 6. EXECUTION ---
	modeBtn.onclick = toggleMode;
	doc.getElementById('scanBtn').onclick = () => driveWindow.location.reload();
	doc.getElementById('resetBtn').onclick = () => { localStorage.removeItem(STORAGE_KEY); driveWindow.location.reload(); };

	doc.getElementById('allBtn').onclick = () => {
	const target = selectedSet.size !== cardRegistry.length;
	selectedSet.clear();
	cardRegistry.forEach((c, idx) => {
	if(c.data && target) { selectedSet.add(idx); c.el.classList.add('selected'); }
	else { c.el.classList.remove('selected'); }
	});
	updateCount();
	};

	doc.getElementById('dlBtn').onclick = async () => {
	const ids = Array.from(selectedSet);
	log(`Downloading ${ids.length} files...`);
	for(let i=0; i<ids.length; i++) {
	const data = cardRegistry[ids[i]].data;
	if(!data) continue;
	try {
	const r = await fetch(data.link);
	const b = await r.blob();
	const u = URL.createObjectURL(b);
	const a = doc.createElement('a');
	a.href = u;
	a.download = (data.title \|\| data.filename).replace(/[^a-z0-9]/gi, '_') + '.pdf';
	doc.body.appendChild(a);
	a.click();
	a.remove();
	URL.revokeObjectURL(u);
	await new Promise(r => setTimeout(r, 500));
	} catch(e) {}
	}
	log("Download Complete.");
	};

	try {
	await initPdf();

	// --- KEY FIX: ID-BASED DEDUPLICATION ---
	const allLinks = Array.from(document.querySelectorAll('a[href*="/mod/resource/view.php"]'));
	const uniqueLinks = [];
	const seenIds = new Set();

	allLinks.forEach(link => {
	// Extract ?id=XXXX
	const match = link.href.match(/id=(\d+)/);
	if (match) {
	const id = match[1];
	if (!seenIds.has(id)) {
	seenIds.add(id);
	uniqueLinks.push(link);
	}
	}
	});

	log(`Found ${uniqueLinks.length} unique files. Generating grid...`);

	// Create Skeletons Immediately (Correct Count)
	uniqueLinks.forEach((link, idx) => {
	const el = createSkeleton(idx);
	cardRegistry.push({ id: idx, el: el, rawLink: link });
	});

	// Process Queue
	const cache = getCache();
	let index = 0;

	const worker = async () => {
	while(index < uniqueLinks.length) {
	const i = index++;
	const linkObj = uniqueLinks[i];
	const moodleUrl = linkObj.href;

	// 1. Try Cache
	if(cache[moodleUrl]) {
	updateCard(i, cache[moodleUrl], true);
	continue;
	}

	// 2. Fetch
	try {
	// Fetch wrapper page to find real PDF URL
	const r = await fetch(moodleUrl);
	const t = await r.text();
	const docParser = new DOMParser().parseFromString(t, 'text/html');
	const pdfAnchor = docParser.querySelector('a[href$=".pdf"]');

	if(pdfAnchor) {
	const directLink = pdfAnchor.href;

	// Count & Metadata
	const task = window.pdfjsLib.getDocument(directLink);
	const pdf = await task.promise;
	const meta = await pdf.getMetadata();

	const itemData = {
	pages: pdf.numPages,
	title: meta.info?.Title \|\| "",
	filename: decodeURIComponent(directLink.split('?')[0].split('/').pop()),
	link: directLink
	};

	cache[moodleUrl] = itemData;
	saveCache(cache);
	updateCard(i, itemData, false);
	} else {
	// Not a PDF? Remove skeleton.
	cardRegistry[i].el.remove();
	}
	} catch(e) {
	// Error? Leave skeleton or mark error
	console.warn(e);
	}
	}
	};

	await Promise.all(Array(CONCURRENCY).fill(null).map(worker));
	log(`Scan Complete! Loaded ${uniqueLinks.length} files.`);

	} catch(e) {
	log("Error: " + e.message);
	}
	})();
No results found