MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

/* -----------------------------------------
   jQuery UI tabs (safe) – won't break page
------------------------------------------*/
mw.loader.using(['jquery.ui']).then(function () {
  try {
    if ($("[class^=portal_vtab]").length) {
      $("[class^=portal_vtab]").tabs().addClass("ui-tabs-vertical ui-helper-clearfix");
      $("[class^=portal_vtab] li").removeClass("ui-corner-top").addClass("ui-corner-left");
    }

    var $tabs = $("#portal_slider");
    if ($tabs.length) {
      $tabs.tabs({ fx: { opacity: 'toggle', duration: 100 } });

      function selectTab(idx) {
        idx = parseInt(idx, 10) || 0;
        $tabs.tabs("option", "active", idx);
      }

      $("[class*=portal_sliderlink]").on('click', function (e) {
        e.preventDefault();
        var m = this.className.match(/portal_sliderlink-(\d+)/);
        if (m) selectTab(m[1]);
      });

      $('#portal_next').on('click', function (e) {
        e.preventDefault();
        var active = $tabs.tabs("option", "active");
        var total  = $tabs.find("> ul > li").length || 1;
        selectTab((active + 1) % total);
      });

      $('#portal_prev').on('click', function (e) {
        e.preventDefault();
        var active = $tabs.tabs("option", "active");
        var total  = $tabs.find("> ul > li").length || 1;
        selectTab((active - 1 + total) % total);
      });
    }
  } catch (err) {
    console.warn('[tabs] disabled due to error:', err);
  }
});

/* -----------------------------------------
   ReferencePopups lockdown + upload tweak
------------------------------------------*/
((window.dev = window.dev || {}).ReferencePopups = dev.ReferencePopups || {}).lockdown = true;
mw.config.set('UMFBypassLicenseCheck', true);

/* -----------------------------------------
   Hide Admin toolbox for non-admins
------------------------------------------*/
mw.loader.using('mediawiki.util').then(function () {
  try {
    var g = mw.config.get('wgUserGroups') || [];
    var isAdmin = g.indexOf('sysop') !== -1 || g.indexOf('interface-admin') !== -1;
    if (!isAdmin) {
      document.querySelectorAll('.only-sysop').forEach(function (el) { el.style.display = 'none'; });
    }
  } catch (e) {
    console.warn('[only-sysop] hide failed:', e);
  }
});

/* ==========================================================
   RANDOM PAGE TEASER – robust, pageid-based, no extensions
   Renders into <div id="random-teaser" class="random-card">
========================================================== */
mw.loader.using(['mediawiki.api', 'mediawiki.util']).then(function () {
  var box = document.getElementById('random-teaser');
  if (!box) return; // run only if the container exists

  var api = new mw.Api();
  var THUMB_W = 280;

  function esc(s){ return mw.html.escape(String(s || '')); }

  function excerptFromHTML(html, maxChars) {
    var d = document.createElement('div');
    d.innerHTML = html;
    // pick first meaningful paragraph
    var p = d.querySelector('p');
    var t = (p ? p.innerText : d.innerText || '').replace(/\s+/g, ' ').trim();
    if (t.length > maxChars) t = t.slice(0, maxChars).replace(/\s+\S*$/, '') + '…';
    return t || 'No description available.';
  }

  function firstRaster(list) {
    if (!Array.isArray(list) || !list.length) return null;
    // Prefer raster formats
    var pick = list.find(function (t) { return /\.(jpe?g|png|gif|webp)$/i.test(t || ''); });
    return pick || list[0] || null;
  }

  function getThumbUrl(fileTitle) {
    if (!fileTitle) return Promise.resolve(null);
    return api.get({
      action: 'query',
      formatversion: 2,
      titles: fileTitle,
      prop: 'imageinfo',
      iiprop: 'url',
      iiurlwidth: THUMB_W
    }).then(function (r) {
      var p = r.query && r.query.pages && r.query.pages[0];
      var ii = p && p.imageinfo && p.imageinfo[0];
      return (ii && (ii.thumburl || ii.url)) || null;
    }).catch(function (e) {
      console.warn('[teaser] imageinfo failed:', e);
      return null;
    });
  }

  function render(title, text, imgUrl) {
    var url = mw.util.getUrl(title);
    box.innerHTML =
      '<div class="thumb">' +
        (imgUrl ? '<img src="' + esc(imgUrl) + '" alt="">' : '<span>🡲</span>') +
      '</div>' +
      '<div class="content">' +
        '<h3><a href="' + url + '">' + esc(title) + '</a></h3>' +
        '<p>' + esc(text) + '</p>' +
        '<div class="actions">' +
          '<a class="btn" href="' + url + '">Open</a>' +
          '<button type="button" class="btn" id="rand-refresh">Another</button>' +
          '<a class="btn" href="' + mw.util.getUrl('Special:Random') + '">Special:Random</a>' +
        '</div>' +
      '</div>';

    box.classList.remove('loading');

    var btn = document.getElementById('rand-refresh');
    if (btn) btn.addEventListener('click', function () {
      box.classList.add('loading');
      load();
    });
  }

  function load() {
    // 1) Random page with pageid (stable)
    api.get({
      action: 'query',
      formatversion: 2,
      generator: 'random',
      grnnamespace: 0,
      grnlimit: 1,
      prop: 'info'
    }).then(function (q) {
      var pg = q.query && q.query.pages && q.query.pages[0];
      if (!pg) throw new Error('No random page');
      var pageid = pg.pageid;
      var title  = pg.title;

      // 2) Parse via pageid → HTML + images (avoids missingtitle)
      return api.get({
        action: 'parse',
        pageid: pageid,
        prop: 'text|images',
        redirects: 1
      }).then(function (p) {
        var html   = p.parse && p.parse.text && p.parse.text['*'] || '';
        var images = p.parse && p.parse.images || [];
        var text   = excerptFromHTML(html, 420);
        var file   = firstRaster(images);

        // 3) Resolve thumbnail (if any)
        return getThumbUrl(file).then(function (thumb) {
          render(title, text, thumb);
        });
      });
    }).catch(function (e) {
      console.error('[teaser] failed:', e);
      box.classList.remove('loading');
      box.innerHTML = '<div class="content"><h3>Random page</h3><p>Could not load a preview.</p></div>';
    });
  }

  // Initial load
  load();
});