Use SignalType to improve typing [homekit] (#114297)

homeassistant/components/homekit/__init__.py

@@ -121,6 +121,7 @@ from .const import (
     SERVICE_HOMEKIT_RESET_ACCESSORY,
     SERVICE_HOMEKIT_UNPAIR,
     SHUTDOWN_TIMEOUT,
+    SIGNAL_RELOAD_ENTITIES,
 )
 from .iidmanager import AccessoryIIDStorage
 from .models import HomeKitEntryData
@@ -846,7 +847,7 @@ class HomeKit:
         self.status = STATUS_WAIT
         self._cancel_reload_dispatcher = async_dispatcher_connect(
             self.hass,
-            f"homekit_reload_entities_{self._entry_id}",
+            SIGNAL_RELOAD_ENTITIES.format(self._entry_id),
             self.async_reload_accessories,
         )
         async_zc_instance = await zeroconf.async_get_async_instance(self.hass)

homeassistant/components/homekit/accessories.py

@@ -84,6 +84,7 @@ from .const import (
     MAX_VERSION_LENGTH,
     SERV_ACCESSORY_INFO,
     SERV_BATTERY_SERVICE,
+    SIGNAL_RELOAD_ENTITIES,
     TYPE_FAUCET,
     TYPE_OUTLET,
     TYPE_SHOWER,
@@ -621,7 +622,7 @@ class HomeAccessory(Accessory):  # type: ignore[misc]
         """Reload and recreate an accessory and update the c# value in the mDNS record."""
         async_dispatcher_send(
             self.hass,
-            f"homekit_reload_entities_{self.driver.entry_id}",
+            SIGNAL_RELOAD_ENTITIES.format(self.driver.entry_id),
             (self.entity_id,),
         )
 

homeassistant/components/homekit/const.py

@@ -1,6 +1,9 @@
 """Constants used be the HomeKit component."""
 
+from __future__ import annotations
+
 from homeassistant.const import CONF_DEVICES
+from homeassistant.util.signal_type import SignalTypeFormat
 
 # #### Misc ####
 DEBOUNCE_TIMEOUT = 0.5
@@ -11,6 +14,9 @@ HOMEKIT_FILE = ".homekit.state"
 SHUTDOWN_TIMEOUT = 30
 CONF_ENTRY_INDEX = "index"
 EMPTY_MAC = "00:00:00:00:00:00"
+SIGNAL_RELOAD_ENTITIES: SignalTypeFormat[tuple[str, ...]] = SignalTypeFormat(
+    "homekit_reload_entities_{}"
+)
 
 # ### Codecs ####
 VIDEO_CODEC_COPY = "copy"