Initial commit - copied workspace after database cleanup

server/mqtt_receiver.py

@@ -0,0 +1,57 @@
+import os
+import base64
+import json
+from datetime import datetime
+import paho.mqtt.client as mqtt
+
+# MQTT-Konfiguration
+MQTT_BROKER = "mqtt_broker"
+MQTT_PORT = 1883
+MQTT_USER = "infoscreen_taa_user"
+MQTT_PASSWORD = "infoscreen_taa_MQTT25!"
+TOPIC_SCREENSHOTS = "infoscreen/screenshot"
+SAVE_DIR = "received_screenshots"
+topics = [
+    ("infoscreen/screenshot", 0),
+    ("infoscreen/heartbeat", 0),
+    # ... weitere Topics hier
+]
+
+# Ordner für empfangene Screenshots anlegen
+os.makedirs(SAVE_DIR, exist_ok=True)
+
+# Callback, wenn eine Nachricht eintrifft
+def on_message(client, userdata, msg):
+    try:
+        payload = json.loads(msg.payload.decode('utf-8'))
+        b64_str = payload["screenshot"]
+        img_data = base64.b64decode(b64_str)
+        
+        # Dateiname mit Zeitstempel
+        ts = datetime.fromtimestamp(payload.get("timestamp", datetime.now().timestamp()))
+        filename = ts.strftime("screenshot_%Y%m%d_%H%M%S.jpg")
+        filepath = os.path.join(SAVE_DIR, filename)
+        
+        # Bild speichern
+        with open(filepath, "wb") as f:
+            f.write(img_data)
+        print(f"Bild gespeichert: {filepath}")
+    except Exception as e:
+        print("Fehler beim Verarbeiten der Nachricht:", e)
+
+# Callback bei erfolgreicher Verbindung
+def on_connect(client, userdata, flags, rc, properties):
+    if rc == 0:
+        print("Mit MQTT-Server verbunden.")
+        client.subscribe(TOPIC_SCREENSHOTS, qos=1)
+    else:
+        print(f"Verbindung fehlgeschlagen (Code {rc})")
+
+if __name__ == "__main__":
+    client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
+    client.username_pw_set(MQTT_USER, MQTT_PASSWORD)  # <<<< AUTHENTIFIZIERUNG
+    client.on_connect = on_connect
+    client.on_message = on_message
+    
+    client.connect(MQTT_BROKER, MQTT_PORT, keepalive=60)
+    client.loop_forever()