MediaWiki:Common.js

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

/****************************************/
/* sliders using jquery by User:Tierrie */
/****************************************/
mw.loader.using( ['jquery.cookie']);
 
/****************************************/
/* sliders using jquery by User:Tierrie */
/****************************************/
mw.loader.using( ['jquery.ui'], function() {
  $( "[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").tabs({ fx: {opacity:'toggle', duration:100} } );
  $("[class*=portal_sliderlink]").click(function() { // bind click event to link
    $tabs.tabs('select', this.className.match(/portal_sliderlink-(\d+)/)[1]);
    console.log("Sliding to " + this.className.match(/portal_sliderlink-(\d+)/)[1]);
    return false;
  });
  $('#portal_next').click(function() {
    $tabs.tabs('select', ($tabs.tabs('option', 'selected') == ($tabs.tabs('length'))-1) ? 0 : $tabs.tabs('option', 'selected') + 1 ); // switch to next tab
    return false;
  });
  $('#portal_prev').click(function() { // bind click event to link
    $tabs.tabs('select', ($tabs.tabs('option', 'selected') == 0) ? ($tabs.tabs('length')-1) : $tabs.tabs('option', 'selected') - 1 ); // switch to previous tab
    return false;
  });
});

/* lockdown for reference popup configuration */
((window.dev = window.dev || {}).ReferencePopups = dev.ReferencePopups || {}).lockdown = true;

/* Disable license check for multi upload */
mw.config.set('UMFBypassLicenseCheck', true);

mw.loader.using('mediawiki.util').then(function () {
  var g = mw.config.get('wgUserGroups')||[];
  var isAdmin = g.indexOf('sysop')!==-1 || g.indexOf('interface-admin')!==-1;
  if (!isAdmin) document.querySelectorAll('.only-sysop').forEach(el=>el.style.display='none');
});

/* Random Page Teaser on Main Page
 * Fetches a random page (namespace 0), shows title, extract and thumbnail.
 */
mw.loader.using(['mediawiki.api', 'mediawiki.util']).then(function () {
  // Run only on main page (adjust if your main page title differs)
  var isMain = mw.config.get('wgIsMainPage') || mw.config.get('wgPageName') === 'Main_Page';
  var box = document.getElementById('random-teaser');
  if (!isMain || !box) return;

  var api = new mw.Api();

  function renderCard(data) {
    var page = (data && data.query && data.query.pages && data.query.pages[0]) || null;
    if (!page) {
      box.innerHTML = '<div class="content"><h3>Random page</h3><p>Could not load a page.</p></div>';
      box.classList.remove('loading');
      return;
    }

    var title = page.title;
    var url = mw.util.getUrl(title);
    var extract = (page.extract || '').replace(/\n+/g, ' ').trim();
    if (extract.length > 420) extract = extract.slice(0, 420).replace(/\s+\S*$/, '') + '…';

    var img = (page.thumbnail && page.thumbnail.source) ? page.thumbnail.source : null;

    box.innerHTML =
      '<div class="thumb">' +
        (img ? '<img src="' + img + '" alt="">' : '<span>🡲</span>') +
      '</div>' +
      '<div class="content">' +
        '<h3><a href="' + url + '">' + mw.html.escape(title) + '</a></h3>' +
        '<p>' + (extract || 'No description available.') + '</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 refreshBtn = document.getElementById('rand-refresh');
    if (refreshBtn) refreshBtn.addEventListener('click', function () {
      box.classList.add('loading');
      loadRandom();
    });
  }

  function loadRandom() {
    api.get({
      action: 'query',
      formatversion: 2,
      generator: 'random',
      grnnamespace: 0,        // only main/article namespace
      grnlimit: 1,
      prop: 'extracts|pageimages',
      exintro: 1,
      explaintext: 1,         // plain text extract
      exchars: 600,           // server-side clamp
      pithumbsize: 280,       // thumbnail width
      pilicense: 'any'
    }).then(renderCard).catch(function () {
      renderCard(null);
    });
  }

  loadRandom();
});


api.get({
  action: 'query',
  formatversion: 2,
  generator: 'random',
  grnnamespace: 0,
  grnlimit: 1,
  prop: 'extracts|images',
  exintro: 1,
  explaintext: 1,
  exchars: 600
}).then(function (data) {
  var page = data.query.pages[0];
  if (page.images && page.images.length) {
    // vezme prvý obrázok
    var file = page.images[0].title;
    api.get({
      action: 'query',
      titles: file,
      prop: 'imageinfo',
      iiprop: 'url',
      iiurlwidth: 280
    }).then(function (imgData) {
      var imgPage = Object.values(imgData.query.pages)[0];
      var img = imgPage.imageinfo[0].thumburl;
      // tu už máš thumbnail
    });
  }
});

/* Random Page Teaser with robust thumbnail fallback (no PageImages required) */
mw.loader.using(['mediawiki.api', 'mediawiki.util']).then(function () {
  var isMain = mw.config.get('wgIsMainPage') || mw.config.get('wgPageName') === 'Main_Page';
  var box = document.getElementById('random-teaser');
  if (!isMain || !box) return;

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

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

  function render(page, imgUrl) {
    var title = page.title;
    var url = mw.util.getUrl(title);
    var extract = (page.extract || '').replace(/\n+/g, ' ').trim();
    if (extract.length > 420) extract = extract.slice(0, 420).replace(/\s+\S*$/, '') + '…';

    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(extract) || 'No description available.') + '</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 refreshBtn = document.getElementById('rand-refresh');
    if (refreshBtn) refreshBtn.addEventListener('click', function () {
      box.classList.add('loading'); loadRandom();
    });
  }

  // Try to resolve a thumbnail URL from PageImages; if absent, fallback to first image->imageinfo
  function resolveThumb(page) {
    // 1) If PageImages is installed AND page has .thumbnail, use it
    if (page.thumbnail && page.thumbnail.source) {
      return Promise.resolve(page.thumbnail.source);
    }

    // 2) Fallback: get first File used on the page
    return api.get({
      action: 'query',
      formatversion: 2,
      prop: 'images',
      pageids: page.pageid,
      imlimit: 50
    }).then(function (res) {
      var p = (res.query && res.query.pages && res.query.pages[0]) || {};
      var files = (p.images || []).map(function (x){ return x.title; });

      // Prefer common raster types, skip SVG/ICO if chceš
      var pick = files.find(function (t) {
        return /\.(jpg|jpeg|png|gif|webp)$/i.test(t || '');
      }) || files[0];

      if (!pick) return null;

      // 3) Ask for thumbnail url of that file
      return api.get({
        action: 'query',
        formatversion: 2,
        titles: pick,
        prop: 'imageinfo',
        iiprop: 'url',
        iiurlwidth: THUMB_WIDTH
      }).then(function (imgRes) {
        var imgPage = imgRes.query && imgRes.query.pages && imgRes.query.pages[0];
        var info = imgPage && imgPage.imageinfo && imgPage.imageinfo[0];
        return info && (info.thumburl || info.url) || null;
      });
    });
  }

  function loadRandom() {
    api.get({
      action: 'query',
      formatversion: 2,
      generator: 'random',
      grnnamespace: 0,
      grnlimit: 1,
      // PageImages (if present) + extract; if PageImages is missing, API len ignoruje thumbnail a nič sa nepokazí
      prop: 'extracts|pageimages',
      exintro: 1,
      explaintext: 1,
      exchars: 600,
      pithumbsize: THUMB_WIDTH,
      pilicense: 'any'
    }).then(function (data) {
      var page = data.query && data.query.pages && data.query.pages[0];
      if (!page) throw new Error('No random page returned');

      return resolveThumb(page).then(function (thumbUrl) {
        render(page, thumbUrl);
      });
    }).catch(function (e) {
      console.warn('Random teaser error:', e);
      box.classList.remove('loading');
      box.innerHTML = '<div class="content"><h3>Random page</h3><p>Could not load a preview.</p></div>';
    });
  }

  loadRandom();
});

/* Random Page Teaser — works without PageImages/TextExtracts */
$(function () {
  var box = document.getElementById('random-teaser');
  if (!box) return;

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

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

  function makeExcerptFromHTML(html, maxChars) {
    // Build a sandbox DOM, pick first paragraph text
    var tmp = document.createElement('div');
    tmp.innerHTML = html;
    var p = tmp.querySelector('p');
    var txt = (p ? p.innerText : tmp.innerText || '').replace(/\s+/g, ' ').trim();
    if (txt.length > maxChars) txt = txt.slice(0, maxChars).replace(/\s+\S*$/, '') + '…';
    return txt || 'No description available.';
  }

  function pickImageTitle(list) {
    if (!Array.isArray(list) || !list.length) return null;
    // Prefer common raster formats
    var preferred = list.find(function (t) { return /\.(jpe?g|png|gif|webp)$/i.test(t); });
    return preferred || 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_WIDTH
    }).then(function (res) {
      var p = res.query && res.query.pages && res.query.pages[0];
      var ii = p && p.imageinfo && p.imageinfo[0];
      return (ii && (ii.thumburl || ii.url)) || null;
    }).catch(function(){ return null; });
  }

  function render(title, extract, 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(extract) + '</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 refreshBtn = document.getElementById('rand-refresh');
    if (refreshBtn) refreshBtn.addEventListener('click', function () {
      box.classList.add('loading');
      loadRandom();
    });
  }

  function loadRandom() {
    // 1) Get random article (namespace 0)
    api.get({
      action: 'query',
      formatversion: 2,
      list: 'random',
      rnnamespace: 0,
      rnlimit: 1
    }).then(function (r) {
      var item = r && r.query && r.query.random && r.query.random[0];
      if (!item) throw new Error('No random page');
      var title = item.title;

      // 2) Parse HTML + list images (no extensions needed)
      return api.get({
        action: 'parse',
        page: title,
        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 excerpt = makeExcerptFromHTML(html, 420);
        var fileTitle = pickImageTitle(images);

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

  loadRandom();
});