Add mark_refunded parameter to refund creation

doc/api/resources/orders.rst

@@ -1594,7 +1594,8 @@ Order refund endpoints
         "amount": "23.00",
         "payment": 1,
         "execution_date": null,
-        "provider": "manual"
+        "provider": "manual",
+        "mark_refunded": false
       }
 
    **Example response**:

src/pretix/api/views/order.py

@@ -617,6 +617,7 @@ class RefundViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
         return ctx
 
     def create(self, request, *args, **kwargs):
+        mark_refunded = request.data.pop('mark_refunded', False)
         serializer = OrderRefundCreateSerializer(data=request.data, context=self.get_serializer_context())
         serializer.is_valid(raise_exception=True)
         with transaction.atomic():
@@ -632,6 +633,12 @@ class RefundViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
                 user=request.user if request.user.is_authenticated else None,
                 auth=request.auth
             )
+            if mark_refunded:
+                mark_order_refunded(
+                    r.order,
+                    user=request.user if request.user.is_authenticated else None,
+                    auth=(request.auth if request.auth else None),
+                )
 
         headers = self.get_success_headers(serializer.data)
         return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)

src/tests/api/test_orders.py

@@ -2269,6 +2269,29 @@ def test_refund_create(token_client, organizer, event, order):
     assert r.source == "admin"
     assert r.info_data == {"foo": "bar"}
     assert r.payment.local_id == 2
+    order.refresh_from_db()
+    assert order.status == Order.STATUS_PENDING
+
+
+@pytest.mark.django_db
+def test_refund_create_mark_refunded(token_client, organizer, event, order):
+    res = copy.deepcopy(REFUND_CREATE_PAYLOAD)
+    res['mark_refunded'] = True
+    resp = token_client.post(
+        '/api/v1/organizers/{}/events/{}/orders/{}/refunds/'.format(
+            organizer.slug, event.slug, order.code
+        ), format='json', data=res
+    )
+    assert resp.status_code == 201
+    r = order.refunds.get(local_id=resp.data['local_id'])
+    assert r.provider == "manual"
+    assert r.amount == Decimal("23.00")
+    assert r.state == "created"
+    assert r.source == "admin"
+    assert r.info_data == {"foo": "bar"}
+    assert r.payment.local_id == 2
+    order.refresh_from_db()
+    assert order.status == Order.STATUS_REFUNDED
 
 
 @pytest.mark.django_db