MediaWiki:Gadget-find-archived-section.js

$.ready.then(function() {

	var addsection = document.getElementById('ca-addsection');
	var correctNs = mw.config.get('wgNamespaceNumber') % 2 === 1 || mw.config.get('wgNamespaceNumber') === 4;
	var minerva = mw.config.get('skin') === 'minerva';

	// Show only on discussion pages (pages with "add section" button)
	// On minerva skin (which doesn't use have add section button) show on all talk & project space pages
	if (!addsection && (!correctNs || !minerva)) {
		return;
	}

	var sectionName = decodeURIComponent(window.___location.hash.slice(1)).replace(/_/g, ' ');
	if (!sectionName || document.getElementById(sectionName.replace(/ /g, '_')) !== null) {
		return;
	}

	$('#mw-content-text').before(
		$('<div>').html('Looks like the discussion "' + sectionName + '" has been archived. Finding archived discussion...').addClass('archived-section-prompt').css({
			'font-size': '90%',
			'padding-left': '20px'
		})
	);

	var prefix = mw.config.get('wgPageName').replace(/_/g, ' ');

	// For admin noticeboards, archive pages titles are unusual
	if (prefix === "Wikipedia:Administrators' noticeboard/Incidents") {
		prefix = "Wikipedia:Administrators' noticeboard/IncidentArchive";
	} else if (prefix === "Wikipedia:Administrators' noticeboard/Edit warring") {
		prefix = "Wikipedia:Administrators' noticeboard/3RRArchive";
	} else if (prefix === "Wikipedia:Administrators' noticeboard") {
		prefix = "Wikipedia:Administrators' noticeboard/Archive";
	}

	var searchString = '~"' + sectionName + '"';

	var searchLink = mw.config.get('wgScript')
					+ '?title=Special:Search'
					+ '&search=' + encodeURIComponent(searchString)
					+ '&prefix=' + encodeURIComponent(prefix)
					+ '&sort=create_timestamp_desc';

	// Fetch and parse search results page
	$.ajax(searchLink).then(function(html) {
		var divHtml;
		if ($(html).find('.mw-search-nonefound').length) {
			divHtml = 'No search results found for archived discussion "' + sectionName + '"';

		} else {
			divHtml = 'Looks like the discussion "' + sectionName + '" has been archived. ' ;
			var discussionLink = $(html).find('ul.mw-search-results .searchalttitle a').attr('href');
			if (discussionLink) {

				// escape double quotes in link, so that they aren't treated as end of href
				// encodeURI() doesn't work here as it tends to escape characters such as the single quote which
				// have already been escaped by mediawiki, resulting in a doubly-escaped malformed url
				divHtml += '<b><a href="' + discussionLink.replace(/"/g, '%22') + '">Click to see archived discussion</a></b> ';
				divHtml += '<small><a href="' + searchLink + '">(or search in archives)</a></small>. ';

			} else {
				divHtml += '<a href="' + searchLink + '">Click to search in archives</a>. ';
			}
		}

		$('.archived-section-prompt').html(divHtml);

	}).fail(function(err) {
		console.error('[find-archived-section]: ', JSON.stringify(err));
	});

});