Fix UserMetadata not being created if createsuperuser script is used

dandiapi/api/management/commands/createsuperuser.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from composed_configuration._allauth_support.management.commands import createsuperuser
+from django.db.models.signals import post_save
+
+from dandiapi.api.models.user import UserMetadata
+
+if TYPE_CHECKING:
+    from composed_configuration._allauth_support.createsuperuser import EmailAsUsernameProxyUser
+
+
+def create_usermetadata(instance: EmailAsUsernameProxyUser, *args, **kwargs):
+    UserMetadata.objects.create(user=instance, status=UserMetadata.Status.APPROVED)
+
+
+class Command(createsuperuser.Command):
+    def handle(self, *args, **kwargs) -> str | None:
+        # Temporarily connect a post_save signal handler so that we can catch the creation of
+        # this superuser. Note, we do this in the handle() method to ensure this only happens
+        # when this management command is actually run.
+        post_save.connect(create_usermetadata, sender=createsuperuser.user_model)
+
+        # Save the return value of the parent class function so we can return it later
+        return_value = super().handle(*args, **kwargs)
+
+        # Disconnect the signal handler. This isn't strictly necessary, but this avoids any
+        # unexpected behavior if, for example, someone extends this command and doesn't
+        # realize there's a signal handler attached dynamically.
+        post_save.disconnect(create_usermetadata, sender=createsuperuser.user_model)
+
+        return return_value