Update app.py

app.py

@@ -26,11 +26,13 @@ logging.basicConfig(
 )
 logger = logging.getLogger("bambu-analysis")
 
-HOST = "mqtt.bambulab.com"  
-PORT = 8883  
-USERNAME = "bblp"  
-PASSWORD = "bblp"  
-DEFAULT_SERIAL = "0309CA471800852"
+HOST = os.environ.get("MQTT_HOST", "default_host") 
+PORT = int(os.environ.get("MQTT_PORT", 1883))
+USERNAME = os.environ.get("MQTT_USERNAME", "default_user")
+PASSWORD = os.environ.get("MQTT_PASSWORD", "default_pass")
+DEFAULT_SERIAL = os.environ.get("DEFAULT_SERIAL", "default_serial")
+
+print(f"Connecting to MQTT at {HOST}:{PORT} with user {USERNAME}")
 
 if os.environ.get("host"):
     HOST = os.environ.get("host")