/*
 * show-backlinks.js
 * https://github.com/savetheinternet/Tinyboard/blob/master/js/show-backlinks.js
 *
 * Released under the MIT license
 * Copyright (c) 2012 Michael Save <savetheinternet@tinyboard.org>
 * Copyright (c) 2013-2014 Marcin Łabanowski <marcin@6irc.net>
 *
 * Usage:
 *   $config['additional_javascript'][] = 'js/jquery.min.js';
 *   // $config['additional_javascript'][] = 'js/post-hover.js'; (optional; must come first)
 *   $config['additional_javascript'][] = 'js/show-backlinks.js';
 */

onReady(function() {
	let showBackLinks = function() {
		let replyId = $(this).attr('id').replace(/(^reply_)|(^op_)/, '');

		$(this).find('div.body a:not([rel="nofollow"])').each(function() {
			let id = $(this).text().match(/^>>(\d+)$/);
			if (id) {
				id = id[1];
			} else {
				return;
			}

			let post = $('#reply_' + id);
			if (post.length == 0){
				post = $('#op_' + id);
				if (post.length == 0) {
					return;
				}
			}

			let mentioned = post.find('.head div.mentioned');
			if (mentioned.length === 0) {
				mentioned = $('<div class="mentioned unimportant"></div>').prependTo(post.find('.head'));
			}

			if (mentioned.find('a.mentioned-' + reply_id).length != 0) {
				return;
			}

			let link = $('<a class="mentioned-' + replyId + '" onclick="highlightReply(\'' + replyId + '\');" href="#'
				+ replyId + '">&gt;&gt;' + replyId + '</a>');
			link.appendTo(mentioned);

			if (window.init_hover) {
				link.each(init_hover);
			}
		});
	};

	$('div.post.reply').each(showBackLinks);

	$(document).on('new_post', function(e, post) {
		if ($(post).hasClass('reply')) {
			showBackLinks.call(post);
		} else {
			$(post).find('div.post.reply').each(showBackLinks);
		}
	});
});