mark support (re)issued entitlements as unrefundable

common/djangoapps/entitlements/api/v1/serializers.py

@@ -35,6 +35,7 @@ class CourseEntitlementSerializer(serializers.ModelSerializer):
             'created',
             'modified',
             'mode',
+            'refund_locked',
             'order_number',
             'support_details'
         )

common/djangoapps/entitlements/api/v1/tests/test_serializers.py

@@ -27,6 +27,7 @@ class EntitlementsSerializerTests(ModuleStoreTestCase):
             'expired_at': entitlement.expired_at,
             'course_uuid': str(entitlement.course_uuid),
             'mode': entitlement.mode,
+            'refund_locked': False,
             'enrollment_course_run': None,
             'order_number': entitlement.order_number,
             'created': entitlement.created.strftime('%Y-%m-%dT%H:%M:%S.%fZ'),

common/djangoapps/entitlements/api/v1/tests/test_views.py

@@ -17,6 +17,7 @@ from xmodule.modulestore.tests.factories import CourseFactory
 
 from course_modes.models import CourseMode
 from course_modes.tests.factories import CourseModeFactory
+from openedx.core.djangoapps.content.course_overviews.tests.factories import CourseOverviewFactory
 from openedx.core.djangoapps.schedules.tests.factories import ScheduleFactory
 from openedx.core.djangoapps.site_configuration.tests.factories import SiteFactory
 from student.models import CourseEnrollment
@@ -27,7 +28,7 @@ log = logging.getLogger(__name__)
 # Entitlements is not in CMS' INSTALLED_APPS so these imports will error during test collection
 if settings.ROOT_URLCONF == 'lms.urls':
     from entitlements.tests.factories import CourseEntitlementFactory
-    from entitlements.models import CourseEntitlement, CourseEntitlementPolicy
+    from entitlements.models import CourseEntitlement, CourseEntitlementPolicy, CourseEntitlementSupportDetail
     from entitlements.api.v1.serializers import CourseEntitlementSerializer
     from entitlements.api.v1.views import set_entitlement_policy
 
@@ -606,7 +607,7 @@ class EntitlementViewSetTest(ModuleStoreTestCase):
             'support_details': [
                 {
                     'unenrolled_run': str(enrollment.course.id),
-                    'action': 'REISSUE',
+                    'action': CourseEntitlementSupportDetail.REISSUE,
                     'comments': 'Severe illness.'
                 }
             ]
@@ -625,6 +626,74 @@ class EntitlementViewSetTest(ModuleStoreTestCase):
         )
         assert results == CourseEntitlementSerializer(reinstated_entitlement).data
 
+    def test_reinstate_refundable_entitlement(self):
+        """ Verify that an entitlement that is refundable stays refundable when support reinstates it. """
+        enrollment = CourseEnrollmentFactory(user=self.user, is_active=True, course=CourseOverviewFactory(start=now()))
+        fulfilled_entitlement = CourseEntitlementFactory.create(
+            user=self.user, enrollment_course_run=enrollment
+        )
+        assert fulfilled_entitlement.is_entitlement_refundable() is True
+        url = reverse(self.ENTITLEMENTS_DETAILS_PATH, args=[str(fulfilled_entitlement.uuid)])
+
+        update_data = {
+            'expired_at': None,
+            'enrollment_course_run': None,
+            'support_details': [
+                {
+                    'unenrolled_run': str(enrollment.course.id),
+                    'action': CourseEntitlementSupportDetail.REISSUE,
+                    'comments': 'Severe illness.'
+                }
+            ]
+        }
+
+        response = self.client.patch(
+            url,
+            data=json.dumps(update_data),
+            content_type='application/json'
+        )
+        assert response.status_code == 200
+
+        reinstated_entitlement = CourseEntitlement.objects.get(
+            uuid=fulfilled_entitlement.uuid
+        )
+        assert reinstated_entitlement.refund_locked is False
+        assert reinstated_entitlement.is_entitlement_refundable() is True
+
+    def test_reinstate_unrefundable_entitlement(self):
+        """ Verify that a no longer refundable entitlement does not become refundable when support reinstates it. """
+        enrollment = CourseEnrollmentFactory(user=self.user, is_active=True)
+        expired_entitlement = CourseEntitlementFactory.create(
+            user=self.user, enrollment_course_run=enrollment, expired_at=datetime.now()
+        )
+        assert expired_entitlement.is_entitlement_refundable() is False
+        url = reverse(self.ENTITLEMENTS_DETAILS_PATH, args=[str(expired_entitlement.uuid)])
+
+        update_data = {
+            'expired_at': None,
+            'enrollment_course_run': None,
+            'support_details': [
+                {
+                    'unenrolled_run': str(enrollment.course.id),
+                    'action': CourseEntitlementSupportDetail.REISSUE,
+                    'comments': 'Severe illness.'
+                }
+            ]
+        }
+
+        response = self.client.patch(
+            url,
+            data=json.dumps(update_data),
+            content_type='application/json'
+        )
+        assert response.status_code == 200
+
+        reinstated_entitlement = CourseEntitlement.objects.get(
+            uuid=expired_entitlement.uuid
+        )
+        assert reinstated_entitlement.refund_locked is True
+        assert reinstated_entitlement.is_entitlement_refundable() is False
+
 
 @unittest.skipUnless(settings.ROOT_URLCONF == 'lms.urls', 'Test only valid in lms')
 class EntitlementEnrollmentViewSetTest(ModuleStoreTestCase):

common/djangoapps/entitlements/api/v1/views.py

@@ -275,6 +275,11 @@ class EntitlementViewSet(viewsets.ModelViewSet):
             )
         support_details = request.data.pop('support_details', [])
 
+        # If a patch request does not explicitly update an entitlement's refundability status, we want to ensure that
+        # changes made to other attributes of the entitlement do not implicitly change its ability to be refunded.
+        if request.data.get('refund_locked') is None:
+            request.data['refund_locked'] = not entitlement.is_entitlement_refundable()
+
         for support_detail in support_details:
             support_detail['entitlement'] = entitlement
             support_detail['support_user'] = request.user

common/djangoapps/entitlements/migrations/0009_courseentitlement_refund_locked.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.12 on 2018-04-12 12:00
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('entitlements', '0008_auto_20180328_1107'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='courseentitlement',
+            name='refund_locked',
+            field=models.BooleanField(default=False),
+        ),
+    ]

common/djangoapps/entitlements/migrations/0010_backfill_refund_lock.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from datetime import datetime
+
+from django.db import migrations, models
+
+
+def backfill_refundability(apps, schema_editor):
+    CourseEntitlementSupportDetail = apps.get_model('entitlements', 'CourseEntitlementSupportDetail')
+    for support_detail in CourseEntitlementSupportDetail.objects.all().select_related('entitlement'):
+        support_detail.entitlement.refund_locked = True
+        support_detail.entitlement.save()
+
+
+def revert_backfill(apps, schema_editor):
+    CourseEntitlementSupportDetail = apps.get_model('entitlements', 'CourseEntitlementSupportDetail')
+    for support_detail in CourseEntitlementSupportDetail.objects.all().select_related('entitlement'):
+        support_detail.entitlement.refund_locked = False
+        support_detail.entitlement.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('entitlements', '0009_courseentitlement_refund_locked'),
+    ]
+
+    operations = [
+        migrations.RunPython(backfill_refundability, revert_backfill),
+    ]

common/djangoapps/entitlements/models.py

@@ -162,6 +162,7 @@ class CourseEntitlement(TimeStampedModel):
         blank=True
     )
     order_number = models.CharField(max_length=128, null=True)
+    refund_locked = models.BooleanField(default=False)
     _policy = models.ForeignKey(CourseEntitlementPolicy, null=True, blank=True)
 
     @property
@@ -226,7 +227,7 @@ class CourseEntitlement(TimeStampedModel):
         """
         Returns a boolean as to whether or not the entitlement can be refunded based on the entitlement's policy
         """
-        return self.policy.is_entitlement_refundable(self)
+        return not self.refund_locked and self.policy.is_entitlement_refundable(self)
 
     def is_entitlement_redeemable(self):
         """

lms/djangoapps/support/static/support/jsx/entitlements/data/api/client.js

@@ -25,6 +25,7 @@ const postEntitlement = ({ username, courseUuid, mode, action, comments = null }
       course_uuid: courseUuid,
       user: username,
       mode,
+      refund_locked: true,
       support_details: [{
         action,
         comments,