/* Usage: adds a search button to all sections, that after clicking tries to search the articles    referenced in that section, gather all see/do listings (with wikidata and wikipedia article    in the specified language). Then it sorts the listings acc. to number of the views of    the wikipedia article, and prints first 9 listings as templates for copy/paste. */ function gatherPagePOIs(href) {     return $.ajax({         url: href,         error: (xhr, status, error) => {             console.error('Error fetching page:', href, status, error);         }     }); }  function getAverageViews(lang, articleName, res) { 	var d = new Date(); 	d.setMonth(-1); 	d.setDate(1); 	var to = d.toISOString().split('T')[0].replaceAll('-', ''); 	d.setMonth(-6); 	var from = d.toISOString().split('T')[0].replaceAll('-', '');     var url = "https://wikimedia.org/api/rest_v1/metrics/pageviews/per-article/" + lang + ".wikipedia/all-access/all-agents/" + articleName + "/monthly/" + from + "/" + to;      return $.ajax({         url: url,         method: 'GET',         dataType: 'json',     }).then((data) => { 		var views = data.items.map(function(item) {return item.views;}); 	    var averageViews = views.length ? (views.reduce(function(a, b) {return (a + b);}) / views.length) : 0; 	    averageViews = Math.ceil(averageViews); 	    res[2] = averageViews; 	}); }  function makeSPARQLQuery(endpointUrl, sparqlQuery ) { 	var settings = { 		headers: { Accept: 'application/sparql-results+json' }, 		data: { query: sparqlQuery } 	};  	return $.ajax( endpointUrl, settings ); } 			 function getWpViews(entries, lang) { 	const wdEndpointUrl = 'https://query.wikidata.org/sparql'; 	const wdStr = entries.map((v) => ("wd:" + v[1])).join(" "); 	const wdQuery = ` 	SELECT ?item ?itemLabel_en ?itemLabel_main ?articleTitle WHERE { 	  VALUES ?item { ` + wdStr + ` } 	  ?sitelink schema:about ?item; 	            schema:isPartOf <https://${lang}.wikipedia.org/>; 	            schema:name ?articleTitle. 	 	  SERVICE wikibase:label {  	    bd:serviceParam wikibase:language "en" . 	    ?item rdfs:label ?itemLabel_en . 	  } 	   	  SERVICE wikibase:label {  	    bd:serviceParam wikibase:language "${lang}" . 	    ?item rdfs:label ?itemLabel_main . 	  } 	} 	`;  	return makeSPARQLQuery(wdEndpointUrl, wdQuery) 		.then((data) => { 			promises = []; 			data.results.bindings.forEach((r) => { 				wdId = 'Q' + r.item.value.split("/Q")[1]; 				e = entries.find((v) => {return v[1] == wdId;}) 				e[3] = r.itemLabel_en.value; 				e[4] = r.itemLabel_main.value;  				promises.push( 					getAverageViews(lang, r.articleTitle.value, e) 				); 			}); 			return Promise.all(promises); 		}) }  function appendTemplate(parent, type, e) { 	alt = ""; 	if (e[3] != e[4]) 		alt = `| alt=${e[4]} `; 	parent.append(`<br/>* {{${type} | name=[[${e[0]}#${e[1]} | ${e[3]}]] ${alt} | wikidata=${e[1]}\}\} &lt;!-- ${e[2]} --&gt;`) }  function appendSection(e, title) { 	const p = $('<p>');     e.append($('<div>').append($('<h4>').text(title)).append(p));     return p; }  function getListings(id) { 	var childWdSee = []; 	var childWdDo = []; 	 	var childWdSeeViews = []; 	var childWdDoViews = []; 	var promises = [];  	targetElement = $("#" + id).parent(); 	targetLang = $("#lang" + id)[0].value; 	 	targetElement.find("a[rel='mw:WikiLink']").each((_, link) => { 	    const href = $(link).attr('href'); 	    const page = href.substr(href.indexOf("/wiki/") + 6); 	    if (href) { 	        promises.push(gatherPagePOIs(href).then(function(data) { 	        	// Create a temporary DOM element to parse the returned page content 	            const tempDom = $('<div>').html(data); 	             	            s=tempDom.find("section:has(h2[id='See'])"); 	 	            s.find(".vcard > span[id^=Q]").each((_, child) => { 	                const wikidataID = $(child).attr('id'); 	                //console.log(href, wikidataID); 	                childWdSee.push([page, wikidataID, 0, "", ""]); 	            }); 	             	            s=tempDom.find("section:has(h2[id='Do'])"); 	 	            s.find(".vcard > span[id^=Q]").each((_, child) => { 	                const wikidataID = $(child).attr('id'); 	                //console.log(href, wikidataID); 	                childWdDo.push([page, wikidataID, 0, "", ""]); 	            }); 	        }) 	        ); 	    } 	}); 	Promise.all( promises ).then( function() { 		/* 		childWdSee = childWdSee.slice(0, 5); 		childWdDo = childWdDo.slice(0, 5); 		*/  		var getViewsPromises = []; 		getViewsPromises.push(getWpViews(childWdSee, targetLang)); 		getViewsPromises.push(getWpViews(childWdDo, targetLang)); 		Promise.all(getViewsPromises).then(function() { 			childWdSee = childWdSee.sort((a,b) => {return b[2] - a[2];}); 			childWdDo = childWdDo.sort((a,b) => {return b[2] - a[2];});  			seeSubel = appendSection(targetElement, "See"); 			childWdSee.slice(0, 9).forEach((v) => { 				appendTemplate(seeSubel, "see", v); 			}); 			doSubel = appendSection(targetElement, "Do"); 			childWdDo.slice(0, 9).forEach((v) => { 				appendTemplate(doSubel, "do", v); 			}); 		}); 	}); }  jQuery(document).ready(function() { 	if ('wgCoordinates' in RLCONF) { 		$('.mw-heading2').each((_, el) => { 		    const id = $(el).attr('id'); 		    $(`<span style="background: #eee;padding: 0 3px 3px 3px"><button id="btn${id}">🔎</button><input id="lang${id}" type="text" size="2" value="en" title="searched wikipedia language"></span>`) 		        .appendTo($(el)); 			$(`#btn${id}`).on('click', () => { getListings(id); }) 		}); 	} });