Benutzer:Doc Taxon/awards.js

//===========================================================================
// Markiert Links auf ausgezeichnete Artikel,
// sowohl in der normalen Artikelansicht als auch in der Vorschau
// Herkunft: Benutzer:Fomafix
// entsprechende Änderungen: Benutzer:Doc Taxon und Benutzerin:Giftpflanze
//===========================================================================

var awardsCheck = {
	cat : {
		'Kategorie:Wikipedia:Exzellent' : {
			className   : 'ea-link',
			titleAppend : ' [exzellent]',
			style       : '',
			css         : 'background:url("https://upload.wikimedia.org/wikipedia/commons/4/41/Qsicon_Exzellent.svg") no-repeat right/10px; padding-right:11px; padding-top:10px;',
			cssAfter    : ''
		},
		'Kategorie:Wikipedia:Lesenswert' : {
			className   : 'lw-link',
			titleAppend : ' [lesenswert]',
			style       : '',
			css         : 'background:url("https://upload.wikimedia.org/wikipedia/commons/4/43/Qsicon_lesenswert.svg") no-repeat right/10px; padding-right:11px; padding-top:10px;',
			cssAfter    : ''
		},
		'Kategorie:Wikipedia:Informative Liste' : {
			className   : 'ilp-link',
			titleAppend : ' [informativ]',
			style       : '',
			css         : 'background:url("https://upload.wikimedia.org/wikipedia/commons/a/a5/Qsicon_informativ.svg") no-repeat right/10px; padding-right:11px; padding-top:10px;',
			cssAfter    : ''
		}
	},

	queryUrlView      : mw.util.wikiScript( 'api' ) + '?action=query&format=json&rawcontinue='
		+ '&prop=categories&pageids=' + mw.config.get( 'wgArticleId' ) + '&callback=awardsCheck.viewResultArrived'
		+ '&generator=links&redirects&gpllimit=max&gplnamespace=0&cllimit=max&indexpageids'
		+ '&nocache=' + mw.config.get( 'wgCurRevisionId' ), //Break client caching, when page has been edited
	queryUrlPreview   : mw.util.wikiScript( 'api' ) + '?action=query&format=json&rawcontinue=&prop=categories'
		+ '&cllimit=max&redirects&indexpageids',
	titles            : {},
	count             : 0,
	previewQueryCount : 0,

	execute : function () {
		if ( window.awardsCheckOnlyCheckMainNS && mw.config.get( 'wgNamespaceNumber' ) !== 0 ) return;
		//Use &clcategories to reduce needed queries
		var cats = [];
		var classes = [];
		var css = '';
		for ( var name in awardsCheck.cat )
			if ( awardsCheck.cat[name].className ) {
				cats.push( encodeURIComponent( name ) );
				classes.push( awardsCheck.cat[name].className );
				if ( awardsCheck.cat[name].style )
					css += '.' + awardsCheck.cat[name].className + ':after {' + awardsCheck.cat[name].style + awardsCheck.cat[name].cssAfter + '}';
					css += '.' + awardsCheck.cat[name].className + '{' + awardsCheck.cat[name].css + '}';
			}
		awardsCheck.queryUrlView += '&clcategories=' + cats.join( '|' );
		awardsCheck.queryUrlPreview += '&clcategories=' + cats.join( '|' );
		var action = mw.config.get( 'wgAction' );
		if ( action === 'submit' ) awardsCheck.doPreviewQueries();
		else if ( action === 'view' || action === 'historysubmit' || action === 'purge' )
			mw.loader.load( awardsCheck.queryUrlView );
		else {//"Show preview on first edit" enabled?
			var prev = document.getElementById( 'wikiPreview' );
			if ( prev && prev.firstChild ) mw.loader.load( awardsCheck.queryUrlView );
		}
		mw.util.addCSS( css );
	},

	storeTitles : function ( res ) {
		if ( !res || !res.query || !res.query.pageids ) return;
		var q = res.query;
		var redirects = {};
		if ( q.redirects ) for ( var i = 0; i < q.redirects.length; i++ ) {
			var r = q.redirects[i];
			if ( !redirects[r.to] ) redirects[r.to] = [];
			redirects[r.to].push( r.from );
		}
		for ( var i = 0; i < q.pageids.length; i++ ) {
			var page = q.pages[q.pageids[i]];
			if ( page.missing === '' || page.ns !== 0 || !page.categories ) continue;
			for ( var j = 0; j < page.categories.length; j++ ) {
				var cat = awardsCheck.cat[page.categories[j].title];
				if ( !cat ) continue;
				awardsCheck.count++;
				awardsCheck.titles[page.title] = cat;
				if ( !redirects[page.title] ) break;
				for ( var k = 0; k < redirects[page.title].length; k++ )
					awardsCheck.titles[redirects[page.title][k]] = cat;
				break;
			}
		}
	},

	markLinks : function () {
		if ( !awardsCheck.count ) return;
		var links = awardsCheck.getLinks( 'wikiPreview' ) || awardsCheck.getLinks( 'bodyContent' )
				|| awardsCheck.getLinks( 'mw_contentholder' ) || awardsCheck.getLinks( 'article' );
		if ( !links ) return;
		for ( var i = 0; i < links.length; i++ ) {
			if ( links[i].className === 'image' ) continue; //Don't mess with images!
			var cat = awardsCheck.titles[links[i].title];
			if ( !cat ) continue;
			links[i].className += " " + cat.className;
			links[i].title += cat.titleAppend;
		}
	},

	viewResultArrived : function ( res ) {
		awardsCheck.storeTitles( res );
		if ( res && res['query-continue'] ) {
			var c = res['query-continue'];
			if ( c.categories ) {
				mw.loader.load( awardsCheck.queryUrlView + '&clcontinue='
					+ encodeURIComponent( c.categories.clcontinue ) );
			} else if ( c.links ) {
				awardsCheck.queryUrlView = awardsCheck.queryUrlView.replace( /&gplcontinue=.*|$/,
					'&gplcontinue=' + encodeURIComponent( c.links.gplcontinue ) );
				mw.loader.load( awardsCheck.queryUrlView );
			}
		} else awardsCheck.markLinks();
	},

	PreviewQuery : function ( titles ) {
		awardsCheck.previewQueryCount++;
		//We have to keep the titles in memory in case we get a query-continue
		this.data = 'titles=' + titles.join( '|' );
		this.doQuery( awardsCheck.queryUrlPreview );
	},

	doPreviewQueries : function () {
		var links = awardsCheck.getLinks( 'wikiPreview' );
		if ( !links ) return;
		var titles = []; var m;
		var unique = {};
		var urlPrefix = mw.config.get( 'wgServer' ) + mw.config.get( 'wgArticlePath' ).replace( /\$1/, '' );
		var siteRegex = new RegExp( $.escapeRE( urlPrefix ) + '([^#]*)' );
		//We only care for main ns pages, so we can filter out the most common cases to save some requests
		var namespaceRegex = /^((Benutzer|Wikipedia|Datei|MediaWiki|Vorlage|Hilfe|Kategorie|Portal)(_Diskussion)?|Spe[cz]ial|Diskussion):/i;
		for ( var i = 0; i < links.length; i++ ) {
			if ( !links[i].title || !( m = links[i].href.match( siteRegex ) )
				|| m[1].match( namespaceRegex ) || unique[m[1]] ) continue;
			unique[m[1]] = true; //Avoid requesting same title multiple times
			titles.push( m[1].replace( /_/g, '%20' ) ); //Avoid normalization of titles
			if ( titles.length < 50 ) continue;
			new awardsCheck.PreviewQuery( titles );
			titles = [];
		}
		if ( titles.length ) new awardsCheck.PreviewQuery( titles );
	},

	getLinks : function ( id ) {
		var el = document.getElementById( id );
		return el && el.getElementsByTagName( 'a' );
	}
};

awardsCheck.PreviewQuery.prototype.doQuery = function ( url ) {
	var q = this;
	var req = sajax_init_object();
	if ( !req ) return;
	req.open( 'POST', url, true );
	req.setRequestHeader( 'Content-Type', 'application/x-www-form-urlencoded' );
	req.onreadystatechange = function () {
		if ( req.readyState === 4 && req.status === 200 )
			eval( 'q.resultArrived(' + req.responseText + ');' );
	};
	req.send( q.data );
	delete req;
};

awardsCheck.PreviewQuery.prototype.resultArrived = function ( res ) {
	awardsCheck.storeTitles( res );
	if ( res && res['query-continue'] && res['query-continue'].categories ) {
		this.doQuery( awardsCheck.queryUrlPreview + '&clcontinue='
			+ encodeURIComponent( res['query-continue'].categories.clcontinue ) );
	} else awardsCheck.previewQueryCount--;
	if ( !awardsCheck.previewQueryCount ) awardsCheck.markLinks();
};

if ( mw.config.get( 'wgNamespaceNumber' ) >= 0 ) $( awardsCheck.execute );