itch.io — AI Filter

Hides AI-disclosed listings on itch.io. Uses ?exclude= server-side AND DOM scraping on visible disclosure links for full coverage.
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// ==UserScript==
// @name         itch.io — AI Filter
// @namespace    https://github.com/moonbun/itchio-ai-filter
// @version      4.0.0
// @description  Hides AI-disclosed listings on itch.io. Uses ?exclude= server-side AND DOM scraping on visible disclosure links for full coverage.
// @author       moonbun
// @match        https://itch.io/games*
// @grant        none
// @license MIT
// ==/UserScript==

(function () {
  'use strict';

  if (!location.pathname.startsWith('/games')) return;

  // ── URL helpers (?exclude= server-side filter) ───────────────────────────────

  const EXCLUDE_TAGS = ['ai-assisted', 'ai-generated'];

  function isFiltered() {
    const ex = new URLSearchParams(location.search).getAll('exclude');
    return EXCLUDE_TAGS.some(t => ex.includes(`tg.${t}`));
  }

  function filteredUrl() {
    const params = new URLSearchParams(location.search);
    params.delete('exclude');
    EXCLUDE_TAGS.forEach(t => params.append('exclude', `tg.${t}`));
    return location.pathname + '?' + params.toString() + location.hash;
  }

  function unfilteredUrl() {
    const params = new URLSearchParams(location.search);
    params.delete('exclude');
    const qs = params.toString();
    return location.pathname + (qs ? '?' + qs : '') + location.hash;
  }

  // ── DOM scraping (catches what ?exclude= misses) ─────────────────────────────
  // The disclosure row is visible in game cards as linked text.
  // We match on href patterns like /games/ai-assisted and /games/ai-generated.

  const AI_HREF_PATTERN = /\/games\/(ai-assisted|ai-generated|ai-graphics|ai-audio|ai-code|ai-text)/;

  // Also catch plain text in case itch.io changes link structure
  const AI_TEXT_PATTERN = /\bai[- ](assisted|generated|graphics|audio|code|text)\b/i;

  const CARD_SELECTOR = '.game_cell, .game_thumb, [class*="game_cell"]';

  let hiddenCount = 0;

  function cardHasAI(card) {
    // Check links by href (most reliable)
    for (const a of card.querySelectorAll('a[href]')) {
      if (AI_HREF_PATTERN.test(a.getAttribute('href'))) return true;
    }
    // Fallback: check visible text in info/meta sections
    const meta = card.querySelector('[class*="meta"], [class*="info"], [class*="disclosure"], [class*="detail"]');
    if (meta && AI_TEXT_PATTERN.test(meta.textContent)) return true;
    return false;
  }

  function hideCard(card) {
    if (!card.dataset.aiFiltered) {
      card.dataset.aiFiltered = '1';
      card.style.setProperty('display', 'none', 'important');
      hiddenCount++;
    }
  }

  function scan(root = document) {
    root.querySelectorAll(CARD_SELECTOR).forEach(card => {
      if (cardHasAI(card)) hideCard(card);
    });
    updateBadge();
  }

  const observer = new MutationObserver(mutations => {
    for (const mut of mutations) {
      for (const node of mut.addedNodes) {
        if (node.nodeType !== Node.ELEMENT_NODE) continue;
        if (node.matches?.(CARD_SELECTOR)) {
          if (cardHasAI(node)) hideCard(node);
        } else {
          scan(node);
        }
      }
    }
  });

  // ── Badge ────────────────────────────────────────────────────────────────────

  const badge = document.createElement('div');
  Object.assign(badge.style, {
    position: 'fixed', bottom: '16px', right: '16px', zIndex: '999999',
    display: 'flex', alignItems: 'center', gap: '8px',
    background: '#1d1d1f', color: '#e0e0e0',
    fontSize: '12px', fontFamily: 'system-ui, sans-serif',
    borderRadius: '20px', padding: '6px 12px',
    boxShadow: '0 2px 8px rgba(0,0,0,.45)',
    userSelect: 'none', opacity: '0.88', transition: 'opacity .2s',
  });

  const dot = document.createElement('span');
  dot.style.cssText = 'width:8px;height:8px;border-radius:50%;flex-shrink:0;';

  const lbl = document.createElement('span');

  const btn = document.createElement('a');
  Object.assign(btn.style, {
    background: '#444', color: '#ddd', borderRadius: '10px',
    padding: '2px 8px', fontSize: '11px', textDecoration: 'none',
    fontFamily: 'inherit', cursor: 'pointer',
  });

  function updateBadge() {
    const serverFiltered = isFiltered();
    dot.style.background = serverFiltered ? '#5db86a' : '#e0a040';
    lbl.textContent = serverFiltered
      ? `AI filter on · ${hiddenCount} hidden`
      : `AI filter (login needed for full coverage) · ${hiddenCount} hidden`;
    btn.textContent = serverFiltered ? 'Turn off' : 'Filter AI';
    btn.href = serverFiltered ? unfilteredUrl() : filteredUrl();
  }

  badge.append(dot, lbl, btn);
  badge.addEventListener('mouseenter', () => badge.style.opacity = '1');
  badge.addEventListener('mouseleave', () => badge.style.opacity = '0.88');
  document.body.appendChild(badge);

  // ── Boot ─────────────────────────────────────────────────────────────────────

  updateBadge();
  observer.observe(document.body, { childList: true, subtree: true });
  scan();

})();