Merge git://github.com/reality/depressionbot into database

modules/imgur/imgur.js

@@ -0,0 +1,42 @@
+/**
+ * Module Name: imgur
+ * Description: Various imgur functionality
+ */
+
+var _ = require('underscore')._,
+    request = require('request');
+
+var imgur = function(dbot) {
+    this.api = { 
+        'getRandomImage': function(callback) {
+            var random = function(len) {
+                var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
+                return len ? chars.charAt(~~(Math.random()*chars.length)) + random(len-1) : "";
+            };
+
+            var testUrl = 'http://i.imgur.com/' + 
+                random(5) +
+                '.png';
+            var image = request(testUrl, function(error, response, body) {
+                // 492 is body.length of a removed image
+                if(!error && response.statusCode == 200 && body.length != 492) {
+                    callback(testUrl);
+                } else {
+                    this.api.getRandomImage(callback);
+                }
+            }.bind(this)); 
+        }
+    };
+
+    this.commands = {
+        '~ri': function(event) {
+            this.api.getRandomImage(function(link) {
+                event.reply(event.user + ': ' + link);
+            });
+        }
+    }
+};
+
+exports.fetch = function(dbot) {
+    return new imgur(dbot);
+}