define(function() {
	var	Topics = {};

	Topics.init = function() {
		var topicsListEl = document.querySelector('.topics'),
			loadMoreEl = document.getElementById('topics_loadmore');

		$(topicsListEl).on('click', '[data-action]', function() {
			var $this = $(this),
				action = this.getAttribute('data-action'),
				tid = $this.parents('[data-tid]').attr('data-tid');

			switch (action) {
				case 'pin':
					if (!$this.hasClass('active')) socket.emit('api:topic.pin', {
						tid: tid
					});
					else socket.emit('api:topic.unpin', {
						tid: tid
					});
					break;
				case 'lock':
					if (!$this.hasClass('active')) socket.emit('api:topic.lock', {
						tid: tid
					});
					else socket.emit('api:topic.unlock', {
						tid: tid
					});
					break;
				case 'delete':
					if (!$this.hasClass('active')) socket.emit('api:topic.delete', {
						tid: tid
					});
					else socket.emit('api:topic.restore', {
						tid: tid
					});
					break;
			}
		});

		loadMoreEl.addEventListener('click', function() {
			if (this.className.indexOf('disabled') === -1) {
				var topics = document.querySelectorAll('.topics li[data-tid]'),
					lastTid = parseInt(topics[topics.length - 1].getAttribute('data-tid'));

				this.innerHTML = '<i class="icon-refresh icon-spin"></i> Retrieving topics';
				socket.emit('api:admin.topics.getMore', {
					limit: 10,
					after: lastTid
				}, function(topics) {
					var btnEl = document.getElementById('topics_loadmore');

					topics = JSON.parse(topics);
					if (topics.length > 0) {
						var html = templates.prepare(templates['admin/topics'].blocks['topics']).parse({
							topics: topics
						}),
							topicsListEl = document.querySelector('.topics');

						topicsListEl.innerHTML += html;
						btnEl.innerHTML = 'Load More Topics';
						$('span.timeago').timeago();
					} else {
						// Exhausted all topics
						btnEl.className += ' disabled';
						btnEl.innerHTML = 'No more topics';
					}
				});
			}
		}, false);

		// Resolve proper button state for all topics
		var topicEls = topicsListEl.querySelectorAll('li'),
			numTopics = topicEls.length;
		for (var x = 0; x < numTopics; x++) {
			if (topicEls[x].getAttribute('data-pinned') === '1') topicEls[x].querySelector('[data-action="pin"]').className += ' active';
			if (topicEls[x].getAttribute('data-locked') === '1') topicEls[x].querySelector('[data-action="lock"]').className += ' active';
			if (topicEls[x].getAttribute('data-deleted') === '1') topicEls[x].querySelector('[data-action="delete"]').className += ' active';
			topicEls[x].removeAttribute('data-pinned');
			topicEls[x].removeAttribute('data-locked');
			topicEls[x].removeAttribute('data-deleted');
		}

		socket.on('api:topic.pin', function(response) {
			if (response.status === 'ok') {
				var btnEl = document.querySelector('li[data-tid="' + response.tid + '"] button[data-action="pin"]');

				$(btnEl).addClass('active');
			}
		});

		socket.on('api:topic.unpin', function(response) {
			if (response.status === 'ok') {
				var btnEl = document.querySelector('li[data-tid="' + response.tid + '"] button[data-action="pin"]');

				$(btnEl).removeClass('active');
			}
		});

		socket.on('api:topic.lock', function(response) {
			if (response.status === 'ok') {
				var btnEl = document.querySelector('li[data-tid="' + response.tid + '"] button[data-action="lock"]');

				$(btnEl).addClass('active');
			}
		});

		socket.on('api:topic.unlock', function(response) {
			if (response.status === 'ok') {
				var btnEl = document.querySelector('li[data-tid="' + response.tid + '"] button[data-action="lock"]');

				$(btnEl).removeClass('active');
			}
		});

		socket.on('api:topic.delete', function(response) {
			if (response.status === 'ok') {
				var btnEl = document.querySelector('li[data-tid="' + response.tid + '"] button[data-action="delete"]');

				$(btnEl).addClass('active');
			}
		});

		socket.on('api:topic.restore', function(response) {
			if (response.status === 'ok') {
				var btnEl = document.querySelector('li[data-tid="' + response.tid + '"] button[data-action="delete"]');

				$(btnEl).removeClass('active');
			}
		});
	};

	return Topics;
});