closes #2297

public/language/en_GB/global.json

@@ -96,5 +96,7 @@
 	"updated.title": "Forum Updated",
 	"updated.message": "This forum has just been updated to the latest version. Click here to refresh the page.",
 
-	"privacy": "Privacy"
+	"privacy": "Privacy",
+
+	"delete_all": "Delete All"
 }

public/src/client/notifications.js

@@ -3,13 +3,24 @@ define('forum/notifications', function() {
 
 	Notifications.init = function() {
 		var listEl = $('.notifications-list');
-
-		$('span.timeago').timeago();
-
-		// Allow the user to click anywhere in the LI
 		listEl.on('click', 'li', function(e) {
 			this.querySelector('a').click();
 		});
+
+		$('span.timeago').timeago();
+
+		$('.notifications .delete').on('click', function() {
+			socket.emit('notifications.deleteAll', function(err) {
+				if (err) {
+					return app.alertError(err.message);
+				}
+
+				$('.notifications .delete').addClass('hidden');
+				$('.notifications .alert-info').removeClass('hidden');
+				listEl.empty();
+			});
+		});
+
 	}
 
 	return Notifications;

src/socket.io/notifications.js

@@ -12,4 +12,12 @@ SocketNotifs.getCount = function(socket, data, callback) {
 	user.notifications.getUnreadCount(socket.uid, callback);
 };
 
+SocketNotifs.deleteAll = function(socket, data, callback) {
+	if (!socket.uid) {
+		return;
+	}
+
+	user.notifications.deleteAll(socket.uid, callback);
+};
+
 module.exports = SocketNotifs;

src/user/notifications.js

@@ -20,6 +20,9 @@ var async = require('async'),
 (function(UserNotifications) {
 
 	UserNotifications.get = function(uid, callback) {
+		if (!parseInt(uid, 10)) {
+			return callback(null , {read: [], unread: []});
+		}
 		getNotifications(uid, 10, function(err, notifications) {
 			if (err) {
 				return callback(err);
@@ -230,6 +233,20 @@ var async = require('async'),
 		});
 	};
 
+	UserNotifications.deleteAll = function(uid, callback) {
+		if (!parseInt(uid, 10)) {
+			return callback();
+		}
+		async.parallel([
+			function(next) {
+				db.delete('uid:' + uid + ':notifications:unread', next);
+			},
+			function(next) {
+				db.delete('uid:' + uid + ':notifications:read', next);
+			}
+		], callback);
+	};
+
 	UserNotifications.sendTopicNotificationToFollowers = function(uid, topicData, postData) {
 		db.getSetMembers('followers:' + uid, function(err, followers) {
 			if (err || !Array.isArray(followers) || !followers.length) {