Shoutbox Direct Image Link Viewer

Converts image links (jpg/png/webp) in shoutbox to inline thumbnails with click-to-enlarge fullscreen popup.
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// ==UserScript==
// @name         Shoutbox Direct Image Link Viewer
// @icon         https://icons.duckduckgo.com/ip3/torrentbd.net.ico
// @namespace    foxbinner
// @version      1.0.1
// @description  Converts image links (jpg/png/webp) in shoutbox to inline thumbnails with click-to-enlarge fullscreen popup.
// @match        https://*.torrentbd.com/*
// @match        https://*.torrentbd.net/*
// @match        https://*.torrentbd.org/*
// @match        https://*.torrentbd.me/*
// @grant        none
// @author       foxbinner
// @license      MIT
// ==/UserScript==

(function () {
    'use strict';

    // Ignore Links - Tenor.com links should remain as regular links
    const ignoreRegex = /https?:\/\/(?:tenor\.com)/i;

    // Fixed regex - handles GIFs with query params (?abc=123)
    const imageRegex = /https?:\/\/[^\s'"><]+\.(?:png|jpe?g|webp|gif)(?:\?[^\s'">]*)?(?=[^\w\-]|$)/gi;

    function convertLinksInNode(node) {
        const textField = node.querySelector('.shout-text');
        if (!textField) return;

        const walker = document.createTreeWalker(textField, NodeFilter.SHOW_TEXT, null);
        const textNodes = [];
        let curr;
        while ((curr = walker.nextNode())) textNodes.push(curr);

        textNodes.forEach(textNode => {
            const text = textNode.nodeValue;
            if (!imageRegex.test(text)) return;

            const frag = document.createDocumentFragment();
            let lastIndex = 0;
            imageRegex.lastIndex = 0;

            let match;
            while ((match = imageRegex.exec(text)) !== null) {
                const url = match[0];

                // Skip if matches ignore pattern (Tenor links)
                if (ignoreRegex.test(url)) {
                    if (match.index > lastIndex) {
                        frag.appendChild(document.createTextNode(text.slice(lastIndex, match.index)));
                    }
                    frag.appendChild(document.createTextNode(url));
                    frag.appendChild(document.createTextNode(' '));
                    lastIndex = imageRegex.lastIndex;
                    continue;
                }

                if (match.index > lastIndex) {
                    frag.appendChild(document.createTextNode(text.slice(lastIndex, match.index)));
                }

                const img = document.createElement('img');
                img.src = url;
                img.dataset.fullsrc = url;
                img.style.cssText = 'max-width:100px; max-height:100px; vertical-align:middle; display:inline; margin:0 4px; cursor:pointer; border-radius:4px;';
                img.alt = 'image';

                frag.appendChild(document.createTextNode(' '));
                frag.appendChild(img);
                frag.appendChild(document.createTextNode(' '));

                lastIndex = imageRegex.lastIndex;
            }

            if (lastIndex < text.length) {
                frag.appendChild(document.createTextNode(text.slice(lastIndex)));
            }

            textNode.parentNode.replaceChild(frag, textNode);
        });
    }

    function createOverlay(img) {
        const existing = document.querySelector('.image-overlay');
        if (existing) existing.remove();

        const overlay = document.createElement('div');
        overlay.className = 'image-overlay';
        overlay.style.cssText = `
            position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
            background: rgba(0,0,0,0.9); z-index: 9999;
            display: flex; align-items: center; justify-content: center;
            cursor: pointer;
        `;

        const fullImg = document.createElement('img');
        fullImg.src = img.dataset.fullsrc || img.src;
        fullImg.style.cssText = `
            max-width: 90vw; max-height: 90vh;
            border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        `;

        overlay.appendChild(fullImg);
        overlay.onclick = () => overlay.remove();
        fullImg.onclick = (e) => e.stopPropagation();

        document.addEventListener('keydown', function escClose(e) {
            if (e.key === 'Escape') overlay.remove();
        }, { once: true });

        document.body.appendChild(overlay);
    }

    function addClickHandlers() {
        document.querySelectorAll('.shout-text img[data-fullsrc]').forEach(img => {
            img.onclick = (e) => {
                e.preventDefault();
                e.stopPropagation();
                createOverlay(img);
            };
            if (img.parentElement.tagName === 'A') {
                img.parentElement.onclick = (e) => e.preventDefault();
            }
        });
    }

    function scanAllShouts() {
        document.querySelectorAll('.shout-item').forEach(convertLinksInNode);
        addClickHandlers();
    }

    scanAllShouts();

    const shoutContainer = document.querySelector('#shouts-container');
    if (shoutContainer) {
        const observer = new MutationObserver((mutations) => {
            mutations.forEach((m) => {
                m.addedNodes.forEach((node) => {
                    if (node.nodeType === Node.ELEMENT_NODE &&
                        (node.classList?.contains('shout-item') ||
                         node.querySelector?.('.shout-item'))) {
                        const shoutItem = node.classList?.contains('shout-item') ? node : node.querySelector('.shout-item');
                        setTimeout(() => {
                            convertLinksInNode(shoutItem);
                            addClickHandlers();
                        }, 50);
                    }
                });
            });
        });
        observer.observe(shoutContainer, { childList: true, subtree: true });
    }
})();