Draft: Notify on reward point granting when deleting evaluation

evap/staff/tests/test_views.py

@@ -2386,6 +2386,25 @@ def test_invalid_deletion(self):
         self.app.post(self.url, user=self.manager, params=self.post_params, status=400)
         self.assertTrue(Evaluation.objects.filter(pk=self.evaluation.pk).exists())
 
+    @patch.object(Evaluation, "can_be_deleted_by_manager", True)
+    def test_reward_point_granting_message(self):
+        already_evaluated = baker.make(Evaluation, course__semester=self.evaluation.course.semester)
+        SemesterActivation.objects.create(semester=self.evaluation.course.semester, is_active=True)
+        student = baker.make(UserProfile, evaluations_participating_in=[self.evaluation])
+
+        baker.make(
+            UserProfile,
+            email=iter(f"{name}@institution.example.com" for name in ["a", "b", "c", "d", "e"]),
+            evaluations_participating_in=[self.evaluation, already_evaluated],
+            evaluations_voted_for=[already_evaluated],
+            _quantity=5,
+        )
+
+        with patch("evap.staff.views.logger") as mock:
+            page = self.app.post(self.url, user=self.manager, params=self.post_params, status=200)
+
+        mock.info.assert_called_with(f"Deletion of evaluation {self.evaluation} has created 5 reward point grantings")
+
 
 class TestSingleResultEditView(WebTestStaffModeWith200Check):
     @classmethod

evap/staff/views.py

@@ -1,5 +1,6 @@
 import csv
 import itertools
+import logging
 from collections import OrderedDict, defaultdict, namedtuple
 from collections.abc import Container
 from dataclasses import dataclass
@@ -135,6 +136,8 @@
 from evap.student.views import render_vote_page
 from evap.tools import unordered_groupby
 
+logger = logging.getLogger(__name__)
+
 
 @manager_required
 def index(request):
@@ -671,6 +674,8 @@ def semester_make_active(request):
 @require_POST
 @manager_required
 def semester_delete(request):
+    # TODO(rebeling): Do we expect reward point granting here? Do we want to notify? I don't see why it couldn't happen
+
     semester = get_object_from_dict_pk_entry_or_logged_40x(Semester, request.POST, "semester_id")
 
     if not semester.can_be_deleted_by_manager:
@@ -1422,6 +1427,11 @@ def helper_single_result_edit(request, evaluation):
 def evaluation_delete(request):
     evaluation = get_object_from_dict_pk_entry_or_logged_40x(Evaluation, request.POST, "evaluation_id")
 
+    # See comment in helper_evaluation_edit
+    @receiver(RewardPointGranting.granted_by_evaluation_deletion, weak=True)
+    def notify_reward_points(grantings, **_kwargs):
+        logger.info(f"Deletion of evaluation {evaluation} has created {len(grantings)} reward point grantings")
+
     if not evaluation.can_be_deleted_by_manager:
         raise SuspiciousOperation("Deleting evaluation not allowed")
     if evaluation.is_single_result: