fix popular sort

src/topics/popular.js

@@ -9,15 +9,7 @@ module.exports = function (Topics) {
 		count = parseInt(count, 10) || 20;
 
 		if (term === 'alltime') {
-			async.waterfall([
-				function (next) {
-					getAllTimePopular(uid, count, next);
-				},
-				function (topics, next) {
-					sortTiedTopicsByViews(topics, next);
-				},
-			], callback);
-			return;
+			return getAllTimePopular(uid, count, callback);
 		}
 
 		async.waterfall([
@@ -27,16 +19,19 @@ module.exports = function (Topics) {
 			function (tids, next) {
 				getTopics(tids, uid, count, next);
 			},
-			function (topics, next) {
-				sortTiedTopicsByViews(topics, next);
-			},
 		], callback);
 	};
 
 	function getAllTimePopular(uid, count, callback) {
-		Topics.getTopicsFromSet('topics:posts', uid, 0, count - 1, function (err, data) {
-			callback(err, data ? data.topics : null);
-		});
+		async.waterfall([
+			function (next) {
+				Topics.getTopicsFromSet('topics:posts', uid, 0, count - 1, next);
+			},
+			function (data, next) {
+				data.topics.sort(sortPopular);
+				next(null, data.topics);
+			},
+		], callback);
 	}
 
 	function getTopics(tids, uid, count, callback) {
@@ -47,9 +42,7 @@ module.exports = function (Topics) {
 			function (topics, next) {
 				tids = topics.filter(function (topic) {
 					return topic && parseInt(topic.deleted, 10) !== 1;
-				}).sort(function (a, b) {
-					return b.postcount - a.postcount;
-				}).slice(0, count).map(function (topic) {
+				}).sort(sortPopular).slice(0, count).map(function (topic) {
 					return topic.tid;
 				});
 				privileges.topics.filterTids('read', tids, uid, next);
@@ -60,11 +53,10 @@ module.exports = function (Topics) {
 		], callback);
 	}
 
-	function sortTiedTopicsByViews(topics, next) {
-		topics.sort(function (a, b) {
-			return parseInt(a.postcount, 10) !== parseInt(b.postcount, 10) ? 0 : parseInt(b.viewcount, 10) - parseInt(a.viewcount, 10);
-		});
-
-		next(null, topics);
+	function sortPopular(a, b) {
+		if (parseInt(a.postcount, 10) !== parseInt(b.postcount, 10)) {
+			return b.postcount - a.postcount;
+		}
+		return parseInt(b.viewcount, 10) - parseInt(a.viewcount, 10);
 	}
 };