User:Nardog/QuickRollback.js

(mw.config.exists('wgDiffNewId') ||
mw.config.get('wgNamespaceNumber') === -1 ||
mw.config.get('wgAction') === 'history') &&
mw.loader.using([
	'mediawiki.api', 'mediawiki.util', 'user.options'
], function quickRollback() {
	[
		['rollback', 'rollback'],
		['rollback-tooltip', 'Restore penultimate editor\'s revision'],
		['rollingback', 'rolling back'],
		['rolledback', 'rolled back'],
		['rolledback-tooltip', 'You have performed rollback on this page'],
		['prompt', 'You\'re about to roll back edits by $1 to $2. Enter the summary (optional):'],
		['custom-summary', 'Reverted edits by [[Special:Contributions/$1|$1]] ([[User talk:$1|talk]]): $2'],
		['custom-summary-anon', 'Reverted edits by [[Special:Contributions/$1|$1]]: $2'],
		['notification', 'Rolled back edits by $1 ($2).'],
		['talk', 'talk'],
		['diff-link', 'Open diff in a new tab'],
		['error-rollback', 'Couldn\'t roll back.'],
		['error-get-user', 'Couldn\'t retrieve the last editor.'],
		['error-find-title', 'Can\'t find the page name.'],
	].forEach(function (entry) {
		var key = 'quickrollback-' + entry[0];
		if (!mw.messages.exists(key)) mw.messages.set(key, entry[1]);
	});
	mw.loader.addStyleTag('.quickrollback-done + .quickaccept{display:none}');
	var isPc = mw.config.get('wgCanonicalSpecialPageName') === 'PendingChanges';
	function handler(e) {
		e.preventDefault();
		var $link = $(this);
		var $wrapper = $link.parent();
		var title;
		if (isPc) {
			$wrapper.parent().prevAll('a').each(function () {
				if (mw.util.getParamValue('action', this.search) === 'history') {
					title = mw.util.getParamValue('title', this.search);
					return false;
				}
			});
		} else {
			title = mw.util.getParamValue('title', this.search);
		}
		if (!title) {
			showError('find-title');
			return;
		}
		title = title.replace(/_/g, ' ');
		$link.detach();
		$wrapper.addClass('quickrollback-doing')
			.text(mw.msg('quickrollback-rollingback'));
		var user = !isPc && mw.util.getParamValue('from', this.search);
		if (user) {
			rollback(title, user, $link, $wrapper);
		} else {
			new mw.Api().get({
				action: 'query',
				titles: title,
				prop: 'revisions',
				rvprop: 'user',
				rvlimit: 1,
				formatversion: 2
			}).always(function (response) {
				user = ((((((response[0] || {}).query || {}).pages || [])[0] || {})
					.revisions || [])[0] || {}).user;
				if (user) {
					rollback(title, user, $link, $wrapper);
				} else {
					showError('get-user');
					$wrapper.removeClass('quickrollback-doing').html($link);
				}
			});
		}
		mw.requestIdleCallback(function () {
			var notif = $('.mw-notification-tag-quickrollback').data('mw-notification');
			if (notif) notif.close();
		});
	}
	function rollback(title, user, $link, $wrapper) {
		mw.loader.using('oojs-ui-windows').then(function () {
			return OO.ui.prompt(mw.msg('quickrollback-prompt', user, title), {
				textInput: { inputId: 'wpSummary' }
			});
		}).then(function (summary) {
			if (typeof summary !== 'string') {
				$wrapper.removeClass('quickrollback-doing').html($link);
				return null;
			}
			summary = summary.trim();
			if (summary) {
				var key = 'quickrollback-custom-summary';
				if (mw.util.isIPAddress(user)) key += '-anon';
				summary = mw.msg(key, user, summary);
			}
			return new mw.Api().rollback(title, user, {
				summary: summary,
				tags: mw.messages.get('quickrollback-tag', undefined),
				errorformat: 'html',
				formatversion: 2
			});
		}).always(function (response, error) {
			if (response === null) return;
			if (typeof response === 'object') {
				$wrapper.addClass('quickrollback-done')
					.text(mw.msg('quickrollback-rolledback'))
					.attr('title', mw.msg('quickrollback-rolledback-tooltip'));
				mw.notify($(
					$.parseHTML(mw.msg(
						'quickrollback-notification',
						$('<a>').attr({
							href: mw.util.getUrl('Special:Contributions/' + user),
							target: '_blank'
						}).text(user)[0].outerHTML,
						$('<a>').attr({
							href: mw.util.getUrl('User talk:' + user),
							target: '_blank'
						}).text(mw.msg('quickrollback-talk'))[0].outerHTML
					)).concat(
						$('<p>').append(
							$('<a>').attr({
								href: mw.util.getUrl(response.title || title, {
									diff: response.revid || 'cur',
									diffonly: 1
								}),
								target: '_blank'
							}).text(mw.msg('quickrollback-diff-link'))
						)[0]
					)
				), { tag: 'quickrollback' });
			} else {
				var msg = (((error || {}).errors || [])[0] || {}).html;
				showError('rollback', msg && $.parseHTML(msg));
				$wrapper.html($link);
			}
			$wrapper.removeClass('quickrollback-doing');
		});
	}
	function showError(key, msg) {
		mw.notify(msg || mw.msg('quickrollback-error-' + key), {
			tag: 'quickrollback',
			type: 'error'
		});
	}
	if (isPc) {
		mw.hook('wikipage.content').add(function ($content) {
			var $button = $('<span>').addClass('quickrollback').append(
				$('<a>').attr({
					href: '#',
					role: 'button',
					title: mw.msg('quickrollback-rollback-tooltip')
				}).text(mw.msg('quickrollback-rollback')).on('click', handler)
			);
			var $acceptButtons = $content.find('.quickaccept');
			if ($acceptButtons.length) {
				$acceptButtons.before($button);
			} else {
				$content.find('form[name="pendingchanges"] ~ ul > li').append(
					' ',
					$('<span>').addClass('mw-changeslist-links mw-pager-tools').append($button)
				);
			}
		});
	} else if (Number(mw.user.options.get('showrollbackconfirmation')) !== 1) {
		$(document.body).on('click', '.mw-rollback-link > a', handler)
			.addClass('quickrollback-ready');
	}
});