Merge pull request #315 from JohnMaguire2013/help

adding some extra checks to ~help command to prevent errors

modules/command/commands.js

@@ -18,8 +18,27 @@ var commands = function(dbot) {
 
         '~help': function(event) {
             var moduleName = event.params[1];
+            if(!moduleName) {
+                helpfulModules = _.filter(dbot.modules, function(element, index, array) {
+                    return _.has(dbot.config[element], 'help');
+                });
+                
+                event.reply(dbot.t('usage', {
+                    'command': '~help',
+                    'usage': '~help [module]'
+                }));
+                event.reply(dbot.t('loaded_modules_with_help', {
+                    'modules': helpfulModules.join(', ')
+                }));
+                return;
+            }
+            
             if(!_.has(dbot.modules, moduleName)) {
-                var moduleName = dbot.commands[moduleName].module; 
+                if(_.has(dbot.commands, moduleName)) {
+                    var moduleName = dbot.commands[moduleName].module; 
+                } else {
+                    var moduleName = undefined;
+                }
             }
 
             if(moduleName && _.has(dbot.config[moduleName], 'help')) {

modules/command/strings.json

@@ -26,5 +26,8 @@
     "no_help": {
         "en": "No help found for {module}.",
         "na'vi": "Fì{module}ìri oel ke tsun run srungit"
+    },
+    "loaded_modules_with_help": {
+        "en": "Loaded modules with help information: {modules}."
     }
 }