// 2014-11-30

if (mw.config.get('wgCanonicalSpecialPageName') == 'Whatlinkshere')

$(function () {

	var helpPage = '//en.wikipedia.org/wiki/User:V111P/js/What_Links_Here_link_filter';

	var spanId = 'excludePagesLinkingTo_span';

	var inputId = 'excludePagesLinkingTo_textInput';

	var formId = 'excludePagesLinkingTo_form';

	var pageNames = [];



	$('#' + spanId).remove();



	$('div#mw-content-text form + fieldset')

		.append($('<span id="' + spanId + '"/>')

				.append(' | Hide pages linking to: ')

				.append($('<form id="excludePagesLinkingTo_form" style="display:inline;">'

						  + '<input type="text" id="' + inputId + '" size="40"/> '

						  + '<input type="submit" value="Go"/> (<a href="'

						  + helpPage + '" target="_blank">?</a>)</form>')));



	$('#' + formId).submit(function (e) {

		e.preventDefault();

		pageNames = $('#' + inputId).val().split('|');

		request();

	});



	// add a 5000 link next to the 500 link

	var limit500Lnk = $('#mw-content-text > a')

		.filter(function() { return $.text([this]) == '500'; });

	if (limit500Lnk0]) {

		limit500Lnk.after(' | <a title="' + limit500Lnk.attr('title') + '" href="'

				+ limit500Lnk.attr('href').replace(/limit=500/, 'limit=5000') + '">5000</a>');

	}



	function request(blcontinue) {

		$.ajax({

			url: '/w/api.php?action=query&list=backlinks&format=json&rawcontinue&bllimit=max&bltitle='

				+ encodeURIComponent(pageNames0]) + (blcontinue ? '&blcontinue=' + blcontinue : ''),

			dataType: 'json',

			error: function () {

				$('div#mw-content-text form > fieldset').append(' Error. ');

			},

			success: function (result) {

				var console = window.console || {log: function () {}, error: function (s) {alert(s);}};



				if (!result || !result.query || !result.query.backlinks) {

					console.error('What Links Here Script error: No (expected) response received from server');

					return;

				}



				var p = result.query.backlinks;

				var titles = [];

				for (var i = 0; i < p.length; i++) {

					titles.push(pi].title);

				}

				var elsToRemove = [];



				console.log('using page: %s', pageNames0]);

				console.log('links before removal: %d', $('ul#mw-whatlinkshere-list li').length);

				$('ul#mw-whatlinkshere-list li').each(function (i, li) {

					var lnk = $(li).find('a').first();

					if ($.inArray($(lnk).text(), titles) > -1) {

						elsToRemove.push(li);

					}

				});

				console.log('removed: %d', elsToRemove.length);

				$(elsToRemove).remove();

				console.log('links after removal: %d', $('ul#mw-whatlinkshere-list li').length);



				if (result'query-continue']) {

					console.log('Continue from: %s', result'query-continue'].backlinks.blcontinue);

					request(result'query-continue'].backlinks.blcontinue);

				}

				else {

					pageNames.shift();

					if (pageNames.length > 0)

						request();

				}



			}

		});

	}

});