NodeBB/public/src/forum/footer.js

(function() {
	var num_users = document.getElementById('number_of_users'),
		latest_user = document.getElementById('latest_user'),
		active_users = document.getElementById('active_users'),
		user_label = document.getElementById('user_label'),
		active_record = document.getElementById('active_record'),
		right_menu = document.getElementById('right-menu');

	socket.emit('user.count', {});
	socket.on('user.count', function(data) {
		num_users.innerHTML = "We currently have <b>" + data.count + "</b> registered users.";
	});
	socket.emit('user.latest', {});
	socket.on('user.latest', function(data) {
		if (data.username == '') {
			latest_user.innerHTML = '';
		} else {
			latest_user.innerHTML = "The most recent user to register is <b><a href='/users/"+data.username+"'>" + data.username + "</a></b>.";
		}
	});
	socket.emit('api:user.active.get');
	socket.on('api:user.active.get', function(data) {
		var plural_users = parseInt(data.users) !== 1,
			plural_anon = parseInt(data.anon) !== 1;

		active_users.innerHTML = 'There ' + (plural_users ? 'are' : 'is') + ' <strong>' + data.users + '</strong> user' + (plural_users ? 's' : '') + ' and <strong>' + data.anon + '</strong> guest' + (plural_anon ? 's' : '') + ' online';
	});
	socket.emit('api:user.active.get_record');
	socket.on('api:user.active.get_record', function(data) {
		active_record.innerHTML = "most users ever online was <strong>" + data.record + "</strong> on <strong>" + (new Date(parseInt(data.timestamp,10))).toUTCString() + "</strong>";
	});

	socket.emit('api:updateHeader', { fields: ['username', 'picture'] });

	socket.on('api:updateHeader', function(data) {
		var rightMenu = $('#right-menu');
		if (data.uid > 0) {
			var userLabel = rightMenu.find('#user_label');
			userLabel.attr('href','/users/'+data['username']);

			userLabel.find('img').attr('src',data['picture']+"?s=24&default=identicon");
			userLabel.find('span').html(data['username']);
			
		} else {
			
			rightMenu.html('');

			var registerEl = document.createElement('li'),
				loginEl = document.createElement('li');

			registerEl.innerHTML = '<a href="/register">Register</a>';
			loginEl.innerHTML = '<a href="/login">Login</a>';

			right_menu.appendChild(registerEl);
			right_menu.appendChild(loginEl);
		}
	});

	// Notifications dropdown
	var notifContainer = document.getElementsByClassName('notifications')[0],
		notifTrigger = notifContainer.querySelector('a'),
		notifList = document.getElementById('notif-list');
	notifTrigger.addEventListener('click', function() {
		if (notifContainer.className.indexOf('open') === -1) socket.emit('api:notifications.get');
	});
	notifList.addEventListener('click', function(e) {
		var target;
		switch(e.target.nodeName) {
			case 'SPAN': target = e.target.parentNode.parentNode; break;
			case 'A': target = e.target.parentNode; break;
			case 'li': target = e.target; break;
		}
		if (target) {
			var nid = parseInt(target.getAttribute('data-nid'));
			if (nid > 0) socket.emit('api:notifications.mark_read', nid);
		}
	})
	socket.on('api:notifications.get', function(data) {
		var	notifFrag = document.createDocumentFragment(),
			notifEl = document.createElement('li'),
			numRead = data.read.length,
			numUnread = data.unread.length,
			x;
		notifList.innerHTML = '';
		if (data.read.length + data.unread.length > 0) {
			for(x=0;x<numUnread;x++) {
				notifEl.setAttribute('data-nid', data.unread[x].nid);
				notifEl.className = 'unread';
				notifEl.innerHTML = '<a href="' + data.unread[x].path + '"><span class="pull-right">' + utils.relativeTime(data.unread[x].datetime, true) + '</span>' + data.unread[x].text + '</a>';
				notifFrag.appendChild(notifEl.cloneNode(true));
			}
			for(x=0;x<numRead;x++) {
				notifEl.setAttribute('data-nid', data.read[x].nid);
				notifEl.className = '';
				notifEl.innerHTML = '<a href="' + data.read[x].path + '"><span class="pull-right">' + utils.relativeTime(data.read[x].datetime, true) + '</span>' + data.read[x].text + '</a>';
				notifFrag.appendChild(notifEl.cloneNode(true));
			}
		} else {
			notifEl.innerHTML = '<a>You have no notifications</a>';
			notifFrag.appendChild(notifEl);
		}
		notifList.appendChild(notifFrag);
	});
	socket.on('api:notifications.counts', function(counts) {
		var notifIcon = document.querySelector('.notifications a i');
		if(notifIcon) {
			if (counts.unread > 0) notifIcon.className = 'icon-circle active';
			else notifIcon.className = 'icon-circle-blank';
		}
	});
	socket.on('event:new_notification', function() {
		document.querySelector('.notifications a i').className = 'icon-circle active';
	});
	socket.emit('api:notifications.counts');
}());