closes #3179

public/src/client/unread.js

@@ -68,7 +68,7 @@ define('forum/unread', ['forum/recent', 'topicSelect', 'forum/infinitescroll', '
 			});
 		});
 
-		socket.emit('categories.get', onCategoriesLoaded);
+		socket.emit('categories.getWatchedCategories', onCategoriesLoaded);
 
 		topicSelect.init();
 

src/socket.io/categories.js

@@ -18,6 +18,21 @@ SocketCategories.get = function(socket, data, callback) {
 	categories.getCategoriesByPrivilege(socket.uid, 'find', callback);
 };
 
+SocketCategories.getWatchedCategories = function(socket, data, callback) {
+	async.parallel({
+		categories: async.apply(categories.getCategoriesByPrivilege, socket.uid, 'find')
+		ignoredCids: async.apply(user.getIgnoredCategories, socket.uid)
+	}, function(err, results) {
+		if (err) {
+			return callback(err);
+		}
+		var watchedCategories =  results.categories.filter(function(category) {
+			return category && results.ignoredCids.indexOf(category.cid.toString()) === -1;
+		});
+		callback(null, watchedCategories);
+	});
+};
+
 SocketCategories.loadMore = function(socket, data, callback) {
 	if (!data) {
 		return callback(new Error('[[error:invalid-data]]'));