additions and corrections for

deployment instructions

listener/Dockerfile

@@ -3,9 +3,11 @@ FROM python:3.13-slim
 
 WORKDIR /app
 
-COPY requirements.txt ./
+COPY listener/requirements.txt ./
 RUN pip install --no-cache-dir -r requirements.txt
 
-COPY . .
+COPY listener/ ./listener
+COPY models/ ./models
 
-CMD ["python", "listener.py"]
+ENV PYTHONPATH=/app
+CMD ["python", "listener/listener.py"]

listener/listener.py

@@ -1,18 +1,17 @@
-
 import os
 import json
 import logging
 import threading
 import time
-# ...requests entfernt...
 import datetime
 import paho.mqtt.client as mqtt
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
 from models.models import Client
-from dotenv import load_dotenv
 
-load_dotenv("/workspace/.env")
+if os.getenv("ENV", "development") == "development":
+    from dotenv import load_dotenv
+    load_dotenv(".env")
 
 # ENV-abhängige Konfiguration
 ENV = os.getenv("ENV", "development")
@@ -28,8 +27,6 @@ logging.basicConfig(level=logging.DEBUG,
 engine = create_engine(DB_URL)
 Session = sessionmaker(bind=engine)
 
-# ...externe Zeitsynchronisation entfernt...
-
 # MQTT-Callback
 
 
@@ -82,6 +79,16 @@ def on_message(client, userdata, msg):
     except Exception as e:
         logging.error(f"Fehler bei Verarbeitung: {e}")
 
+    topic_parts = msg.topic.split('/')
+    if len(topic_parts) == 3 and topic_parts[0] == "infoscreen" and topic_parts[1] == "request_group_id":
+        client_id = topic_parts[2]
+        session = Session()
+        client_obj = session.query(Client).filter_by(uuid=client_id).first()
+        group_id = client_obj.group_id if client_obj else None
+        session.close()
+        response_topic = f"infoscreen/response_group_id/{client_id}"
+        client.publish(response_topic, json.dumps({"group_id": group_id}))
+
 
 def main():
     mqtt_client = mqtt.Client(protocol=mqtt.MQTTv311, callback_api_version=2)
@@ -89,8 +96,9 @@ def main():
     mqtt_client.connect("mqtt", 1883)
     mqtt_client.subscribe("infoscreen/discovery")
     mqtt_client.subscribe("infoscreen/+/heartbeat")
+    mqtt_client.subscribe("infoscreen/request_group_id/#")
     logging.info(
-        "Listener gestartet und abonniert auf infoscreen/discovery und infoscreen/+/heartbeat")
+        "Listener gestartet und abonniert auf infoscreen/discovery, infoscreen/+/heartbeat und infoscreen/request_group_id/#")
     mqtt_client.loop_forever()