Update HelpObserver.py

Updated help message
.help <command> shows help message for specified command
Command can be written with or without leading '.'

FaustBot/Modules/HelpObserver.py

@@ -1,3 +1,4 @@
+from types import NoneType
 from FaustBot.Communication import Connection
 from FaustBot.Modules.PrivMsgObserverPrototype import PrivMsgObserverPrototype
 
@@ -9,24 +10,52 @@ class HelpObserver(PrivMsgObserverPrototype):
 
     @staticmethod
     def help():
-        return ".help - zeigt Hilftexte aller Module an"
+        return ".help <Befehl> - zeigt Hilftexte zu <Befehl> an. Für eine Liste aller verfügbaren Befehle: .help all"
 
     def update_on_priv_msg(self, data, connection: Connection):
         msg = data["message"]
+        command = ""
         if not msg.startswith(".help"):
             return
+        if len(msg.split(' ')) > 1:
+            command = msg.split(' ')[1]
+            if command == 'all':
+                self.show_available_commands(data, connection)
+            else:    
+                if not command.startswith("."):
+                    command = '.' + command
+                self.show_help_for_command(command, data, connection)
+        else:
+            connection.send_back(self.help(), data)
 
+    def collect_commands(self, connection):
+        all_cmd = []
+        for observer in connection.priv_msg_observable.get_observer():
+            cmds = observer.cmd()
+            if cmds is not None:
+                all_cmd.extend(cmds)
+        print(all_cmd)
+        return all_cmd
+
+    def show_available_commands(self, data, connection):
         if data["channel"] == connection.details.get_channel():
             all_cmd = []
-            for observer in connection.priv_msg_observable.get_observer():
-                cmds = observer.cmd()
-                if cmds is not None:
-                    all_cmd.extend(cmds)
+            all_cmd = self.collect_commands(connection)
             msg = ", ".join(all_cmd)
-            msg = "Bekannte Befehle: " + msg + ". Für Details per Query .help ."
+            msg = "Bekannte Befehle: " + msg
             connection.send_back(msg, data)
         else:
             all_help = [m.help() for m in connection.priv_msg_observable.get_observer()]
             for help_msg in all_help:
                 if help_msg is not None:
                     connection.send_back(help_msg, data)
+
+    def show_help_for_command(self, command, data, connection):
+        for observer in connection.priv_msg_observable.get_observer():
+            if observer.cmd() is not None:
+                if command in observer.cmd():
+                    print(observer.help())
+                    connection.send_back(observer.help(), data)
+        
+
+