Enable mypy for track and fix typing errors (#19529)

* Enable mypy for track

* WIP cleaning up tracked object

* Fix tracked object typing

* Fix typing and imports of centroid tracker

* Cleanup typing

* Cleanup

* Formatting

* Fix imports

* Don't specify callable type

* Type out json setting

frigate/comms/events_updater.py

@@ -8,7 +8,7 @@ from .zmq_proxy import Publisher, Subscriber
 
 
 class EventUpdatePublisher(
-    Publisher[tuple[EventTypeEnum, EventStateEnum, str, str, dict[str, Any]]]
+    Publisher[tuple[EventTypeEnum, EventStateEnum, str | None, str, dict[str, Any]]]
 ):
     """Publishes events (objects, audio, manual)."""
 
@@ -19,7 +19,7 @@ class EventUpdatePublisher(
 
     def publish(
         self,
-        payload: tuple[EventTypeEnum, EventStateEnum, str, str, dict[str, Any]],
+        payload: tuple[EventTypeEnum, EventStateEnum, str | None, str, dict[str, Any]],
         sub_topic: str = "",
     ) -> None:
         super().publish(payload, sub_topic)

frigate/comms/zmq_proxy.py

@@ -2,7 +2,7 @@
 
 import json
 import threading
-from typing import Any, Generic, Optional, TypeVar
+from typing import Generic, TypeVar
 
 import zmq
 
@@ -70,7 +70,7 @@ class Publisher(Generic[T]):
         self.context.destroy()
 
 
-class Subscriber:
+class Subscriber(Generic[T]):
     """Receives messages."""
 
     topic_base: str = ""
@@ -82,9 +82,7 @@ class Subscriber:
         self.socket.setsockopt_string(zmq.SUBSCRIBE, self.topic)
         self.socket.connect(SOCKET_SUB)
 
-    def check_for_update(
-        self, timeout: float | None = FAST_QUEUE_TIMEOUT
-    ) -> tuple[str, Any] | tuple[None, None] | None:
+    def check_for_update(self, timeout: float | None = FAST_QUEUE_TIMEOUT) -> T | None:
         """Returns message or None if no update."""
         try:
             has_update, _, _ = zmq.select([self.socket], [], [], timeout)
@@ -101,7 +99,5 @@ class Subscriber:
         self.socket.close()
         self.context.destroy()
 
-    def _return_object(
-        self, topic: str, payload: Optional[tuple[str, Any]]
-    ) -> tuple[str, Any] | tuple[None, None] | None:
+    def _return_object(self, topic: str, payload: T | None) -> T | None:
         return payload