add config validator for face and lpr

frigate/config/config.py

@@ -292,13 +292,30 @@ def verify_autotrack_zones(camera_config: CameraConfig) -> ValueError | None:
 
 
 def verify_motion_and_detect(camera_config: CameraConfig) -> ValueError | None:
-    """Verify that required_zones are specified when autotracking is enabled."""
+    """Verify that motion detection is not disabled and object detection is enabled."""
     if camera_config.detect.enabled and not camera_config.motion.enabled:
         raise ValueError(
             f"Camera {camera_config.name} has motion detection disabled and object detection enabled but object detection requires motion detection."
         )
 
 
+def verify_lpr_and_face(
+    frigate_config: FrigateConfig, camera_config: CameraConfig
+) -> ValueError | None:
+    """Verify that lpr and face are enabled at the global level if enabled at the camera level."""
+    if camera_config.lpr.enabled and not frigate_config.lpr.enabled:
+        raise ValueError(
+            f"Camera {camera_config.name} has lpr enabled but lpr is disabled at the global level of the config. You must enable lpr at the global level."
+        )
+    if (
+        camera_config.face_recognition.enabled
+        and not frigate_config.face_recognition.enabled
+    ):
+        raise ValueError(
+            f"Camera {camera_config.name} has face_recognition enabled but face_recognition is disabled at the global level of the config. You must enable face_recognition at the global level."
+        )
+
+
 class FrigateConfig(FrigateBaseModel):
     version: Optional[str] = Field(default=None, title="Current config version.")
 
@@ -607,6 +624,7 @@ class FrigateConfig(FrigateBaseModel):
             verify_required_zones_exist(camera_config)
             verify_autotrack_zones(camera_config)
             verify_motion_and_detect(camera_config)
+            verify_lpr_and_face(self, camera_config)
 
         self.objects.parse_all_objects(self.cameras)
         self.model.create_colormap(sorted(self.objects.all_objects))