moved posts and recent to new files

src/topics/recent.js

@@ -0,0 +1,36 @@
+
+
+'use strict';
+
+var db = require('./../database');
+
+module.exports = function(Topics) {
+
+	Topics.getLatestTopics = function(uid, start, end, term, callback) {
+		Topics.getLatestTids(start, end, term, function(err, tids) {
+			if(err) {
+				return callback(err);
+			}
+
+			Topics.getTopics('topics:recent', uid, tids, callback);
+		});
+	};
+
+	Topics.getLatestTids = function(start, end, term, callback) {
+		var terms = {
+			day: 86400000,
+			week: 604800000,
+			month: 2592000000
+		};
+
+		var since = terms.day;
+		if(terms[term]) {
+			since = terms[term];
+		}
+
+		var count = parseInt(end, 10) === -1 ? end : end - start + 1;
+
+		db.getSortedSetRevRangeByScore(['topics:recent', '+inf', Date.now() - since, 'LIMIT', start, count], callback);
+	};
+
+};