//<nowiki>

/*

 * Small script to help navigate the CU log.

 * Turns timestamps of a filtered CU log like on [//en.wikipedia.org/wiki/Special:CheckUserLog?cuSearchType=target&cuSearch=Example]

 * into links that try to locate the entry in the full log.

 * This simplifies looking at the context of a previous check.

 */

jQuery(function($){

    if ( mw.config.get( 'wgPageName' ) == 'Special:CheckUserLog' )

	{

		mw.loader.using( 'mediawiki.util', 'mediawiki.user', 'moment'], function() {

			var paraCuloghighlight = mw.util.getParamValue('culogHighlight');

			var paraCusearch = mw.util.getParamValue('cuSearch');

			

			if (!paraCuloghighlight && !paraCusearch) return;

			

			//collect all date text nodes

			var dateNodes = $("#bodyContent > #mw-content-text > ul > li").map(function(i,n){return $(n).contents().first();})		

			

			//highlight all nodes with a matching date

			if (paraCuloghighlight)

			{

				dateNodes.each(function(i,n){

					if(n0].textContent !== paraCuloghighlight) return;

					

					//highlight

					n.wrap("<span style='background-color:#FCC;'/>");

					

					//and scroll into view

					var windowtop = $(window).scrollTop();

					var windowbottom = windowtop + $(window).height();

					var ntop = n.parent().offset().top;

					var nbottom = ntop + n.parent().outerHeight(true);

					if (ntop < windowtop) $(window).scrollTop(ntop);

					else if (nbottom > windowbottom) $(window).scrollTop(nbottom + windowtop- windowbottom);

				});

			}

			

			//link all date nodes to the full log view

			if (paraCusearch)

			{

				var locale = mw.config.get("wgUserLanguage");



				// Date parsing in Javascript is aweful.

				// Localized, configurable date output on Mediawiki doesn't make this any easier.

				// It's conceivable to write a parser that could match /most/ variants out there ...

				// but I'll just strict parse the English date formats instead

				var parsingStrings = {

					"en": {

						"mdy": "HH:mm, MMMM D, YYYY",

						"dmy": "HH:mm, D MMMM YYYY",

						"ymd": "HH:mm, YYYY MMMM D",

						"ISO 8601": "YYYY-MM-DDTHH:mm:ss",

					},

				}

				var localeParsingStrings = parsingStringslocale];

				if (localeParsingStrings)

					var parsingString = localeParsingStringsmw.config.get("wgDefaultDateFormat")];

				if (parsingString)

					var parseDate = function(input){return moment(input, parsingString + ", ", true);}

				else

					var parseDate = moment;



				//Note: We append ", " above since the messages building the log lines, e.g. MediaWiki:Checkuser-log-entry-userips,

				//      look like this: $3, $1 got IP addresses for $2

				//      That is, they do in English! Might need adapting for other languages, or imprecise parsing, or some markup in the messages!







				//function lifted from popups.js

				function getTimeOffsetMinutes(tz)

				{

					if( tz && typeof tz === 'string' )

					{

						if( tz.indexOf('|') > -1 ) // New format

							return parseInt(tz.split('|')[1],10);

						else if ( tz.indexOf(':') > -1 ) // Old format

							return( parseInt(tz,10)*60 + parseInt(tz.split(':')[1],10) );

					}

					return 0;

				}

	

				var timeOffsetMinutes = getTimeOffsetMinutes(mw.user.options.get("timecorrection"));



				//calculate one hour into the future; this will be the upper limit of the log displayed

				timeOffsetMinutes -= 60;



				dateNodes.wrap(function(){

					

					var dateText = $(this)[0].textContent;

					var timestamp = parseDate(dateText);

					if (!timestamp.isValid()) return;

					timestamp.subtract(timeOffsetMinutes, 'minutes');

					var dateOffsetString = timestamp.format("YYYYMMDDHHmm");

					return "<a href='"+mw.config.get("wgScript")+"?title=Special:CheckUserLog&offset="+mw.util.rawurlencode(dateOffsetString)+"&culogHighlight="+mw.util.rawurlencode(dateText)+"' />";

				});

			}

		});

	}

});

//</nowiki>