Implemented mqtt stuff

src/app.py

@@ -5,6 +5,9 @@ from sentry_sdk.integrations.logging import LoggingIntegration
 from utils import config, LoopingTimer
 from signal_processor import SoundSignalProcessor
 from birbnetes_iot_platform_raspberry import BirbnetesIoTPlatformStatusDriver
+from actuator import Loudspeaker
+import paho.mqtt.client
+import json
 
 """
 Main Entrypoint
@@ -42,6 +45,28 @@ def timer_tick(*args) -> None:
         abcsignaprocessor.processcurrentsignal()
 
 
+def mqtt_on_connect(client, userdata, flags, rc):
+    BirbnetesIoTPlatformStatusDriver.enqueue_pattern('green', [1])
+    client.subscribe(f"command/{config.DEVICE_ID}")
+    logging.error("MQTT Connected!")
+
+
+def mqtt_on_disconnect(client, userdata, rc):
+    BirbnetesIoTPlatformStatusDriver.enqueue_pattern('red', [1])
+    logging.error("Unexpected MQTT Disconnect")
+
+
+def mqtt_on_command(client, userdata, message):
+    try:
+        msg = json.loads(message.payload.decode())
+    except (UnicodeError, json.JSONDecodeError) as e:
+        logging.error(f"MQTT Invalid message recieved: {e}")
+        return
+
+    if msg.get("command") == 'doAlert':
+        userdata.act()
+
+
 def main() -> None:
     """
     Main function
@@ -52,6 +77,17 @@ def main() -> None:
     loopingtimer = LoopingTimer(function=timer_tick, args=[listofabcsignaprocessors], interval=config.TICK_INTERVAL)
     loopingtimer.start()
 
+    client = paho.mqtt.client.Client(userdata=Loudspeaker(config.ENEMY_SOUNDS), client_id=config.DEVICE_ID)
+    client.on_connect = mqtt_on_connect
+    client.on_disconnect = mqtt_on_disconnect
+    client.on_message = mqtt_on_command
+
+    if config.MQTT_USERNAME:
+        client.username_pw_set(config.MQTT_USERNAME, config.MQTT_PASSWORD)
+
+    client.connect(config.MQTT_HOSTNAME, config.MQTT_PORT, 60)
+    client.loop_forever()
+
 
 if __name__ == "__main__":
     main()