first commit

accounts/tasks.py

@@ -0,0 +1,16 @@
+from celery import shared_task
+from django.contrib.auth import get_user_model
+from django.utils import timezone
+
+
+@shared_task(name='accounts.tasks.deactivate_expired_users_task')
+def deactivate_expired_users_task():
+    """Deactivate active users whose active_until timestamp has passed."""
+    user_model = get_user_model()
+    now = timezone.now()
+    updated = user_model.objects.filter(
+        is_active=True,
+        active_until__isnull=False,
+        active_until__lte=now,
+    ).update(is_active=False)
+    return updated