MediaWiki:Common.js

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

$(function () {
  const namespace = mw.config.get('wgNamespaceNumber');

/* Prepare information about current Namespace Number; namespace_info can be append to the message below and shown 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 message_edit = '';
    var message_id = '';

    $.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) {
        var lastEdit = new Date(page.revisions[0].timestamp);
        message_edit = 'Data ostatniej edycji: ' + lastEdit.toLocaleString();
      }
    });

    $.getJSON(mw.util.wikiScript('api'), {
      action: 'wbgetentities',
      ids: entityId,
      format: 'json',
      props: 'claims'
    }, function (data) {
      const entity = data.entities[entityId];
      const claims = entity && entity.claims && entity.claims[propertyId];
      if (claims && claims.length > 0) {
        const value = claims[0].mainsnak.datavalue.value;
        message_id = ` Wartość identyfikatora Dariah.lab: (${propertyId}): <strong>${value}</strong>`;
      }
      $('<div class="global-site-message">' + message_edit + message_id + '</div>')
        .prependTo('#content');
    });
  }
});