add command to delete expired sessions

fix #182

cronjobs/cronjob_production_daily.sh

@@ -20,4 +20,7 @@ python manage.py affiliatejournal_update_publications_from_Crossref --settings=S
 python manage.py update_submission_fellowships --settings=SciPost_v1.settings.production_do1
 
 # Update the users' groups 
-python manage.py update_user_permission_groups --settings=SciPost_v1.settings.production_do1
\ No newline at end of file
+python manage.py update_user_permission_groups --settings=SciPost_v1.settings.production_do1
+
+# Delete expired sessions (today's date implied)
+python manage.py delete_expired_sessions --settings=SciPost_v1.settings.production_do1
\ No newline at end of file

cronjobs/cronjob_staging_daily.sh

@@ -6,3 +6,7 @@ cd /home/scipost/SciPost/scipost_django
 source ../venv3.11/bin/activate
 
 python manage.py remind_fellows_to_submit_report
+
+
+# Delete expired sessions (today's date implied)
+python manage.py delete_expired_sessions --settings=SciPost_v1.settings.staging_do1
\ No newline at end of file

scipost_django/scipost/management/commands/delete_expired_sessions.py

+__copyright__ = "Copyright © Stichting SciPost (SciPost Foundation)"
+__license__ = "AGPL v3"
+
+
+import re
+from django.core.management.base import BaseCommand
+from django.utils.timezone import datetime, now
+
+
+class Command(BaseCommand):
+    help = "Delete expired sessions."
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "--expiration_date",
+            type=str,
+            required=False,
+            default=now().strftime("%Y-%m-%d"),
+            help="Expiration date before which to delete sessions (format: YYYY-MM-DD)",
+        )
+
+    def handle(self, *args, **kwargs):
+        if re.match(r"^\d{4}-\d{2}-\d{2}$", kwargs["expiration_date"]):
+            expiration_date = datetime.strptime(
+                kwargs["expiration_date"], "%Y-%m-%d"
+            ).astimezone()
+            self.delete_expired_sessions(expiration_date)
+
+        else:
+            raise ValueError(
+                "Invalid expiration date format. Please use the format YYYY-MM-DD."
+            )
+
+    def delete_expired_sessions(self, expiration_date: datetime):
+        from django.contrib.sessions.models import Session
+
+        sessions_to_delete = Session.objects.filter(expire_date__lt=expiration_date)
+        sessions_count = sessions_to_delete.count()
+        sessions_to_delete.delete()
+        self.stdout.write(
+            self.style.SUCCESS(
+                f"Successfully deleted {sessions_count} "
+                f"expired sessions before {expiration_date.date()}."
+            )
+        )