api: automatically rediscover locks from CCUJack

closes CCCHH/dooris#5

api/src/dooris_api/mqtt_client.py

@@ -3,7 +3,7 @@
 # https://github.com/eclipse-paho/paho.mqtt.python/blob/master/examples/loop_asyncio.py
 #
 
-from typing import Any, List, Set, Iterable
+from typing import Any, Set, Iterable
 import logging
 import asyncio
 import socket
@@ -132,6 +132,7 @@ class AsyncMqttClient:
             self.fut_subscribe = asyncio.get_running_loop().create_future()
             self.client.subscribe([(i, qos) for i in to_add])
             await self.fut_subscribe
+            self.active_subscriptions.update(to_add)
 
         to_remove = self.active_subscriptions.difference(topics)
         if to_remove:
@@ -139,6 +140,7 @@ class AsyncMqttClient:
             self.fut_unsubscribe = asyncio.get_running_loop().create_future()
             self.client.unsubscribe(list(to_remove))
             await self.fut_unsubscribe
+            self.active_subscriptions.difference_update(to_remove)
 
     async def connect(self):
         server_host, server_port = self.connection_string.rsplit(":", maxsplit=1)