Add rudimentary users module to track known users in a channel

jsbot

@@ -1 +1 @@
-Subproject commit 4e5c470a20044416fc1a912b7a3c9ee42be942cb
+Subproject commit 00157e15c9f15e8fcb343c924978616bb6315ee7

modules/users/config.json

@@ -0,0 +1,3 @@
+{
+    "dbKeys": [ "knownUsers" ]
+}

modules/users/users.js

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+/**
+ * Name: Users
+ * Description: Track known users
+ */
+var users = function(dbot) {
+    var knownUsers = dbot.db.knownUsers;
+    var getChanUsers = function(event) {
+       if(!knownUsers.hasOwnProperty(event.server)) {
+            knownUsers[event.server] = {};
+        }
+        var serverUsers = knownUsers[event.server];    
+
+        if(!serverUsers.hasOwnProperty(event.channel.name)) {
+            serverUsers[event.channel.name] = []; 
+        }
+        return serverUsers[event.channel.name];
+    };
+
+    dbot.instance.addListener('366', 'users', function(event) {
+        var chanUsers = getChanUsers(event);
+        for(var nick in event.channel.nicks) {
+            if(!chanUsers.include(nick) && event.channel.nicks.hasOwnProperty(nick)) {
+                chanUsers.push(nick);
+            }
+        }
+    });
+
+    return {
+        'name': 'users',
+        'ignorable': false,
+            
+        'listener': function(event) {
+            var chanusers = getChanUsers(event); 
+            if(!chanUsers.include(event.user)) {
+                chanUsers.push(event.user);
+            }
+        },
+        'on': 'JOIN'
+    };
+};
+
+exports.fetch = function(dbot) {
+    return users(dbot);
+};