fix: Purge Group Exports type mismatch (#3314)

* cast string to datetime

* added test

mealie/services/scheduler/tasks/purge_group_exports.py

@@ -1,7 +1,7 @@
 import datetime
 from pathlib import Path
 
-from sqlalchemy import select
+from sqlalchemy import DateTime, cast, select
 
 from mealie.core import root_logger
 from mealie.core.config import get_app_dirs
@@ -19,7 +19,7 @@ def purge_group_data_exports(max_minutes_old=ONE_DAY_AS_MINUTES):
     limit = datetime.datetime.now() - datetime.timedelta(minutes=max_minutes_old)
 
     with session_context() as session:
-        stmt = select(GroupDataExportsModel).filter(GroupDataExportsModel.expires <= limit)
+        stmt = select(GroupDataExportsModel).filter(cast(GroupDataExportsModel.expires, DateTime) <= limit)
         results = session.execute(stmt).scalars().all()
 
         total_removed = 0

tests/unit_tests/services_tests/scheduler/tasks/test_purge_group_exports.py

@@ -0,0 +1,37 @@
+import tempfile
+from pathlib import Path
+
+from mealie.repos.repository_factory import AllRepositories
+from mealie.schema.recipe.recipe import Recipe
+from mealie.services.recipe.recipe_bulk_service import RecipeBulkActionsService
+from mealie.services.scheduler.tasks.purge_group_exports import purge_group_data_exports
+from tests.utils.factories import random_int, random_string
+from tests.utils.fixture_schemas import TestUser
+
+
+def test_purge_group_exports(database: AllRepositories, unique_user: TestUser):
+    # create the export
+    group = database.groups.get_one(unique_user.group_id)
+    assert group
+    user = database.users.get_one(unique_user.user_id)
+    assert user
+    recipe_exporter = RecipeBulkActionsService(database, user, group)
+    recipes = [
+        database.recipes.create(Recipe(name=random_string(), group_id=group.id)) for _ in range(random_int(2, 5))
+    ]
+
+    with tempfile.NamedTemporaryFile() as tmpfile:
+        recipe_exporter.export_recipes(Path(tmpfile.name), [recipe.slug for recipe in recipes])
+
+    exports = recipe_exporter.get_exports()
+    assert len(exports) == 1
+    export = exports[0]
+    export_path = Path(export.path)
+    assert export_path.exists()
+
+    # purge the export and confirm all data is removed
+    purge_group_data_exports(-525600)  # 1 year into the future
+
+    assert not export_path.exists()
+    exports = recipe_exporter.get_exports()
+    assert not exports