MediaWiki:Common.js

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

$(function () {
  const namespace = mw.config.get('wgNamespaceNumber');  
  const now = new Date();
  const day = String(now.getDate()).padStart(2, '0');
  const month = String(now.getMonth() + 1).padStart(2, '0');
  const year = now.getFullYear();
  const currentDate = `${day}.${month}.${year}`;

/* Prepare information about current Namespace Number; namespace_info can be added to the message below and displayed on all of the pages.*/
/* 
  var namespace_info = 'ID obecnego namespace: ' + namespace;
*/

/* Add a message to all of the pages regardless of the Namespace Number.*/
/*
  var message = 'Referując do WikiHum należy używać <b>identyfikatorów Dariah.lab</b> (ang. Dariah.lab. ID).';
  
  $('<div class="global-site-message">' + message + '</div>')
    .prependTo('#content');
*/
    
  if( namespace === 120 ){
    const pageName = mw.config.get('wgPageName');
    const entityId = mw.config.get('wgTitle');
    const propertyId = 'P187'; /*ID of the property "Dariah.lab ID"*/
    var messageEdit = '';
    var messageDariahLab = '';

    $.getJSON(mw.util.wikiScript('api'), {
      action: 'query',
      prop: 'revisions',
      titles: pageName,
      rvprop: 'timestamp',
      format: 'json'
    }, function (data) {
      var pages = data.query.pages;
      var page = pages[Object.keys(pages)[0]];
      if (page && page.revisions && page.revisions.length > 0) {
        const lastEdit = new Date(page.revisions[0].timestamp);
        const editDay = String(editDate.getDate()).padStart(2, '0');
        const editMonth = String(editDate.getMonth() + 1).padStart(2, '0');
        const editYear = editDate.getFullYear();
        messageEdit = `${editDay}.${editMonth}.${editYear}`;
      }
    });

    $.getJSON(mw.util.wikiScript('api'), {
      action: 'wbgetentities',
      ids: entityId,
      format: 'json',
      props: 'claims'
    }, function (data) {
      const entity = data.entities[entityId];
      const claims = entity && entity.claims && entity.claims[propertyId];
      if (claims && claims.length > 0) {
        var dariahLabValue = claims[0].mainsnak.datavalue.value;
        messageDariahLab = '<a href="http://hdl.handle.net/' + dariahLabValue + '" target="_blank">http://hdl.handle.net/' + dariahLabValue + '</a>';
      }

    $('<div class="global-site-message">' + pageName + ',' + messageDariahLab + ', [ostatnia edycja strony: ' + messageEdit + ' dostęp: ' + currentDate + '].</div>')
      .prependTo('#content');
   });
  }
});