Get Fitnesstracker Name from Device Alias in GB

main.py

@@ -19,8 +19,7 @@ class GadgetbridgeMQTTPublisher:
     def __init__(self):
         self.setup_logging()
         self.db_path = os.getenv("GADGETBRIDGE_DB_PATH", "/data/Gadgetbridge.db")
-        raw_name = os.getenv("DEVICE_NAME", "fitness_tracker")
-        self.device_name = re.sub(r"\W+", "_", raw_name).lower()
+        self.device_name = self.get_device_alias()
         self.load_config()
         self.mqtt_client = None
         self.publish_interval = int(os.getenv("PUBLISH_INTERVAL_SECONDS", "300"))
@@ -354,6 +353,26 @@ class GadgetbridgeMQTTPublisher:
         except Exception as e:
             self.logger.error(f"Failed to connect to MQTT broker: {e}")
 
+    def get_device_alias(self) -> str:
+        """Fetch ALIAS from DEVICE table for device_name"""
+        if not os.path.exists(self.db_path):
+            self.logger.error(f"Database file not found: {self.db_path}")
+            return "fitness_tracker"
+        try:
+            conn = sqlite3.connect(self.db_path)
+            cursor = conn.cursor()
+            cursor.execute("SELECT ALIAS FROM DEVICE LIMIT 1")
+            row = cursor.fetchone()
+            conn.close()
+            if row and row[0]:
+                # Sanitize alias for MQTT topics
+                return re.sub(r"\W+", "_", row[0]).lower()
+            else:
+                return "fitness_tracker"
+        except Exception as e:
+            self.logger.error(f"Error fetching device alias: {e}")
+            return "fitness_tracker"
+
 
 # --- Main Entry Point ---
 if __name__ == "__main__":