wrapped up rss for topics. added a new route to access these feeds from the url topic/tid.rss

src/feed.js

@@ -2,11 +2,15 @@
 	var	RDB = require('./redis.js'),
 		schema = require('./schema.js'),
 		posts = require('./posts.js'),
-		topics = require('./topics.js');
+		topics = require('./topics.js'),
+		fs = require('fs');
 
-	function saveFeed(feed, xml) {
+	function saveFeed(feed, xml, tid) {
 		feed.endEntry();
-		console.log(xml.toString())
+
+		fs.writeFile('feeds/topics/' + tid + '.rss', xml.toString(), function (err) {
+			if (err) throw err;
+		});
 	}
 
 	function createFeed(xml, urn, title, feed_url, author) {
@@ -25,7 +29,7 @@
 	function createEntry(feed, urn, title, content, url, author) {
 		return feed		
 				  .startEntry(urn)
-				  .writeTitle('Reply #' + title)
+				  .writeTitle(title)
 				  .writeLink(url, 'text/html')
 				  .writeContent(content, 'text', 'en')
 				  .writeAuthorRAW(author)
@@ -54,18 +58,20 @@
 			var topicData = results[0],
 				postsData = results[1].postData,
 				userData = results[1].userData,
-				url = topicData.category_slug + '/' + topicData.slug;
+				url = '/topic/' + topicData.slug;
 
 			var post = topicData.main_posts[0];
 			var urn = 'urn:' + cid + ':' + tid;
 			var feed = createFeed(xml, urn, topicData.topic_name, url, post.username);
+			var title;
 
 			for (var i = 0, ii = postsData.pid.length; i < ii; i++) {
 				urn = 'urn:' + cid + ':' + tid + ':' + postsData.pid[i];
-				feed = createEntry(feed, urn, postsData.pid[i], postsData.content[i], url, userData[postsData.uid[i]].username);
+				title = 'Reply to ' + topicData.topic_name + ' on ' + (new Date(parseInt(postsData.timestamp[i], 10)).toUTCString());
+				feed = createEntry(feed, urn, title, postsData.content[i], url, userData[postsData.uid[i]].username);
 			}
 
-			saveFeed(feed, xml);
+			saveFeed(feed, xml, tid);
 		});
 
 	};

src/webserver.js

@@ -94,8 +94,21 @@ var express = require('express'),
 	
 	// Complex Routes
 	app.get('/topic/:topic_id/:slug?', function(req, res) {
-		var topic_url = req.params.topic_id + (req.params.slug ? '/' + req.params.slug : '');
-		topics.get_cid_by_tid(req.params.topic_id, function(cid) {
+		var tid = req.params.topic_id;
+		if (tid.match('.rss')) {
+			fs.readFile('feeds/topics/' + tid, function (err, data) {
+				if (err) {
+					res.send("Unable to locate an rss feed at this location.");
+					return;
+				}
+				res.send(data);
+			});
+			return;
+		}
+
+
+		var topic_url = tid + (req.params.slug ? '/' + req.params.slug : '');
+		topics.get_cid_by_tid(tid, function(cid) {
 			res.send(
 				build_header() +
 				'<script>templates.ready(function(){ajaxify.go("topic/' + topic_url + '");});</script>' +