MediaWiki:Common.js: Difference between revisions

/* ABC-WIKIPEDIA-REDLINKS-START */
/**
 * ABC Wiki:
 * Missing imported article links should open Wikipedia in a new tab.
 *
 * Existing local pages stay local.
 * Missing article redlinks go to:
 * https://wikipedia.org/wiki/Page_Title
 */
(function () {
	'use strict';

	function getMissingArticleTitle(link) {
		var href = link.getAttribute('href') || '';
		var url;
		var title;

		if (!href) {
			return null;
		}

		try {
			url = new URL(href, window.location.origin);
		} catch (e) {
			return null;
		}

		if (url.searchParams.get('redlink') !== '1') {
			return null;
		}

		title = url.searchParams.get('title');
		if (!title) {
			return null;
		}

		title = title.replace(/_/g, ' ');

		// Only normal article pages.
		// Do not redirect Template:, Module:, File:, Category:, User:, Talk:, Special:, etc.
		if (title.indexOf(':') !== -1) {
			return null;
		}

		return title;
	}

	function rewriteRedlinksToWikipedia() {
		var content = document.querySelector('.mw-parser-output');

		if (!content) {
			return;
		}

		content.querySelectorAll('a.new').forEach(function (link) {
			var title = getMissingArticleTitle(link);
			var wikiTitle;
			var wikipediaUrl;

			if (!title) {
				return;
			}

			wikiTitle = title.replace(/ /g, '_');
			wikipediaUrl = 'https://wikipedia.org/wiki/' + encodeURIComponent(wikiTitle);

			link.href = wikipediaUrl;
			link.target = '_blank';
			link.rel = 'noopener noreferrer';
			link.classList.remove('new');
			link.classList.add('abc-wikipedia-missing-link');
			link.title = title + ' — opens on Wikipedia in a new tab';
		});
	}

	if (document.readyState === 'loading') {
		document.addEventListener('DOMContentLoaded', rewriteRedlinksToWikipedia);
	} else {
		rewriteRedlinksToWikipedia();
	}
}());
/* ABC-WIKIPEDIA-REDLINKS-END */