notifications: add user preferences filter

schemas: add notifications schema

invenio_users_resources/notifications.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2023 Graz University of Technology.
+#
+# Invenio-Users-Resources is free software; you can redistribute it and/or
+# modify it under the terms of the MIT License; see LICENSE file for more
+# details.
+
+"""User specific resources for notifications."""
+
+
+from invenio_records_resources.notifications import RecipientFilter
+
+
+class UserPreferencesRecipientFilter(RecipientFilter):
+    """Recipient filter for notifications being enabled at all."""
+
+    def run(self, recipients, **kwargs):
+        """Filter recipients."""
+        return [
+            r
+            for r in recipients
+            if r.get("user", {})
+            .get("preferences", {})
+            .get("notifications", {})
+            .get("enabled", False)
+        ]

invenio_users_resources/services/schemas.py

@@ -91,3 +91,9 @@ class UserGhostSchema(Schema):
         dump_only=True,
     )
     is_ghost = fields.Boolean(dump_only=True)
+
+
+class NotificationPreferences(Schema):
+    """Schema for notification preferences."""
+
+    enabled: fields.Bool()