Extend room setup logic to invites also

Closes varia/bots#4.

LogBot/logbot.py

@@ -129,29 +129,38 @@ logbot @uptime: To check how long @logbot has been around
 @bots: To see who is around :)
 """
 
-    def setup(self):
-        self.log.info(f"Output folder is set to: { self.output }")
+    def _parse_room_name(self, room):
+        """Parse room name from entire address string."""
+        return str(re.match(r".*@", room).group()).replace("@", "")
 
-        for room in self.rooms:
-
-            roomname = str(re.match(r".*@", room).group()).replace("@", "")
-            room_path = os.path.join(self.output, roomname)
+    def _setup_room(self, room):
+        """Create directories and database entries for a new room."""
+        room_name = self._parse_room_name(room)
+        room_path = os.path.join(self.output, room_name)
         self.log.info(f"Processing setup logic for: {room_path}")
 
-            # Check if the room is in the database already
-            if not room in self.db.keys():
+        if room not in self.db.keys():
             self.db[room] = {}
             self.db[room]["messages"] = {}
             self.db[room]["title"] = room
             self.log.info(f"Added to the database: { room }")
 
-            # Check if the room has an output folder already
         if not os.path.exists(room_path):
             os.mkdir(room_path)
             shutil.copy("stylesheet.css", room_path)
             self.log.info(f"Created a folder for: { room }")
             self.log.info(f"Copied stylesheet.css to: { room }")
 
+    def setup(self):
+        self.log.info(f"Output folder is set to: { self.output }")
+        for room in self.rooms:
+            self._setup_room(room)
+
+    def group_invite(self, message):
+        """Extend xbotlib invite response logic and do required room setup."""
+        super().group_invite(message)
+        self._setup_room(message.room)
+
     def group(self, message):
 
         # to debug in the terminal