Checks for remote_ocr_mode and fix import

src/paperless/checks.py

@@ -337,6 +337,23 @@ def check_deprecated_v2_ocr_env_vars(
     return warnings
 
 
+@register()
+def check_remote_ocr_mode(app_configs: Any, **kwargs: Any) -> list[Error]:
+    # Import here because checks.py runs before the app registry is ready
+    from paperless.models import RemoteOCRMode
+
+    valid_modes = {mode.value for mode in RemoteOCRMode}
+    if settings.REMOTE_OCR_MODE not in valid_modes:
+        return [
+            Error(
+                f"PAPERLESS_REMOTE_OCR_MODE is set to {settings.REMOTE_OCR_MODE!r}, "
+                f"expected one of {sorted(valid_modes)}.",
+            ),
+        ]
+
+    return []
+
+
 def get_tesseract_langs():
     proc = subprocess.run(
         [shutil.which("tesseract"), "--list-langs"],

src/paperless/tests/test_checks.py

@@ -15,6 +15,7 @@ from paperless.checks import audit_log_check
 from paperless.checks import binaries_check
 from paperless.checks import check_default_language_available
 from paperless.checks import check_deprecated_db_settings
+from paperless.checks import check_remote_ocr_mode
 from paperless.checks import check_v3_minimum_upgrade_version
 from paperless.checks import debug_mode_check
 from paperless.checks import paths_check
@@ -630,6 +631,22 @@ class TestV3MinimumUpgradeVersionCheck:
         assert check_v3_minimum_upgrade_version(None) == []
 
 
+class TestRemoteOCRModeCheck:
+    def test_valid_mode(self, settings: SettingsWrapper) -> None:
+        settings.REMOTE_OCR_MODE = "workflow_only"
+
+        msgs = check_remote_ocr_mode(None)
+
+        assert len(msgs) == 0
+
+    def test_invalid_mode(self, settings: SettingsWrapper) -> None:
+        settings.REMOTE_OCR_MODE = "sometimes"
+
+        msgs = check_remote_ocr_mode(None)
+
+        assert len(msgs) == 1
+        assert "PAPERLESS_REMOTE_OCR_MODE is set to 'sometimes'" in msgs[0].msg
+
 class TestTesseractChecks:
     def test_default_language(self) -> None:
         check_default_language_available(None)