Links module which can retrieve titles

modules/link.js

@@ -0,0 +1,55 @@
+/**
+ * Module Name: Link
+ * Description: Stores recent channel links, with commands to retrieve
+ * information about links.
+ */
+var request = require('request');
+var link = function(dbot) {
+    var urlRegex = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
+    var links = {}; 
+
+    var commands = {
+        '~title': function(event) {
+            var link = links[event.channel];
+            if(event.params[1] !== undefined) {
+                var urlMatches = event.params[1].match(urlRegex);
+                if(urlMatches !== null) {
+                    link = urlMatches[0];
+                }
+            }
+
+            request(link, function (error, response, body) {
+                if(!error && response.statusCode == 200) {
+                    var title = body.valMatch(/<title>(.*)<\/title>/, 2);
+                    if(title) {
+                        event.reply(title[1]);
+                    } else {
+                        event.reply('no title found');
+                    }
+                }
+            });
+        }
+    };
+
+    return {
+        'name': 'js', 
+        'ignorable': true,
+
+        'onLoad': function() {
+            return commands;
+        },
+
+        'listener': function(event) {
+            var urlMatches = event.message.match(urlRegex);
+            if(urlMatches !== null) {
+                links[event.channel] = urlMatches[0];
+            }
+        },
+
+        'on': 'PRIVMSG'
+    };
+};
+
+exports.fetch = function(dbot) {
+    return link(dbot);
+};