handle unknown gift cards

src/pretix/api/serializers/order.py

@@ -53,7 +53,7 @@ from pretix.base.decimal import round_decimal
 from pretix.base.i18n import language
 from pretix.base.invoicing.transmission import get_transmission_types
 from pretix.base.models import (
-    CachedFile, Checkin, Customer, Device, Invoice, InvoiceAddress,
+    CachedFile, Checkin, Customer, Device, GiftCard, Invoice, InvoiceAddress,
     InvoiceLine, Item, ItemVariation, Order, OrderPosition, Question,
     QuestionAnswer, ReusableMedium, SalesChannel, Seat, SubEvent, TaxRule,
     Voucher,
@@ -1831,6 +1831,18 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
             except PaymentException:
                 pass
 
+            except GiftCard.DoesNotExist as e:
+                payment = order.payments.create(
+                    amount=order.pending_sum,
+                    provider=GiftCardPayment.identifier,
+                    info_data={
+                        'gift_card_secret': gift_card_secret,
+                    },
+                    state=OrderPayment.PAYMENT_STATE_CREATED
+                )
+                payment.fail(info={**payment.info_data, 'error': str(e)},
+                             send_mail=False)
+
         if order.total == Decimal('0.00') and validated_data.get('status') != Order.STATUS_PAID and not validated_data.get('require_approval'):
             order.status = Order.STATUS_PAID
             order.save()

src/pretix/base/payment.py

@@ -1525,18 +1525,26 @@ class GiftCardPayment(BasePaymentProvider):
     def payment_control_render(self, request, payment) -> str:
         from .models import GiftCard
 
-        if 'gift_card' in payment.info_data:
-            gc = GiftCard.objects.get(pk=payment.info_data.get('gift_card'))
+        if any(key in payment.info_data for key in ('gift_card', 'error')):
             template = get_template('pretixcontrol/giftcards/payment.html')
-
             ctx = {
                 'request': request,
                 'event': self.event,
-                'gc': gc,
                 **({'error': payment.info_data[
-                    'error']} if 'error' in payment.info_data else {})
+                    'error']} if 'error' in payment.info_data else {}),
+                **({'gift_card_secret': payment.info_data[
+                    'gift_card_secret']} if 'gift_card_secret' in payment.info_data else {})
             }
-            return template.render(ctx)
+
+            try:
+                gc = GiftCard.objects.get(pk=payment.info_data.get('gift_card'))
+                ctx = {
+                    'gc': gc,
+                }
+            except GiftCard.DoesNotExist:
+                pass
+            finally:
+                return template.render(ctx)
 
     def payment_control_render_short(self, payment: OrderPayment) -> str:
         d = payment.info_data
@@ -1551,7 +1559,10 @@ class GiftCardPayment(BasePaymentProvider):
         try:
             gc = GiftCard.objects.get(pk=payment.info_data.get('gift_card'))
         except GiftCard.DoesNotExist:
-            return {}
+            return {
+                **({'error': payment.info_data[
+                    'error']} if 'error' in payment.info_data else {})
+            }
         return {
             'gift_card': {
                 'id': gc.pk,

src/pretix/control/templates/pretixcontrol/giftcards/payment.html

@@ -3,18 +3,24 @@
 <dl class="dl-horizontal">
     <dt>{% trans "Gift card code" %}</dt>
     <dd>
-        <a href="{% url "control:organizer.giftcard" organizer=gc.issuer.slug giftcard=gc.pk %}">
-            {{ gc.secret }}
-        </a>
-        {% if gc.issuer != request.organizer %}
-            <span class="text-muted">
-                <br>
-                <span class="fa fa-group"></span> {{ gc.issuer }}
-            </span>
+        {% if gc %}
+            <a href="{% url "control:organizer.giftcard" organizer=gc.issuer.slug giftcard=gc.pk %}">
+                {{ gc.secret }}
+            </a>
+            {% if gc.issuer.slug != request.organizer %}
+                <span class="text-muted">
+                    <br>
+                    <span class="fa fa-group"></span> {{ gc.issuer }}
+                </span>
+        {% endif %}
+        {% elif gift_card_secret %}
+            {{ gift_card_secret }}
         {% endif %}
     </dd>
-    <dt>{% trans "Issuer" %}</dt>
-    <dd>{{ gc.issuer }}</dd>
+    {% if gc %}
+        <dt>{% trans "Issuer" %}</dt>
+        <dd>{{ gc.issuer }}</dd>
+    {% endif %}
     {% if error %}
          <dt>{% trans "Error" %}</dt>
         <dd>{{ error }}</dd>

src/tests/api/test_order_create.py

@@ -3535,14 +3535,14 @@ def test_order_create_use_gift_card_exclusive_with_payment_provider(token_client
 
     res['use_gift_cards'] = [gc.secret]
 
-    res_with_payment_provider=copy.deepcopy(res)
+    res_with_payment_provider = copy.deepcopy(res)
     resp = token_client.post(
         '/api/v1/organizers/{}/events/{}/orders/'.format(
             organizer.slug, event.slug
         ), format='json', data=res_with_payment_provider
     )
     assert resp.status_code == 400
-    assert resp.json() ==  {"use_gift_cards":["The attribute use_gift_cards is not compatible with payment_provider or payment_info"]}
+    assert resp.json() == {"use_gift_cards": ["The attribute use_gift_cards is not compatible with payment_provider or payment_info"]}
 
     res_with_payment_info = copy.deepcopy(res)
     res_with_payment_info['payment_info'] = {"a": "b"}
@@ -3553,7 +3553,7 @@ def test_order_create_use_gift_card_exclusive_with_payment_provider(token_client
         ), format='json', data=res_with_payment_info
     )
     assert resp.status_code == 400
-    assert resp.json() ==  {"use_gift_cards":["The attribute use_gift_cards is not compatible with payment_provider or payment_info"]}
+    assert resp.json() == {"use_gift_cards": ["The attribute use_gift_cards is not compatible with payment_provider or payment_info"]}
 
 
 @pytest.mark.django_db
@@ -3584,3 +3584,38 @@ def test_order_create_use_gift_card_repeated(token_client, organizer, event, ite
     )
     assert resp.status_code == 400
     assert resp.json() == {'use_gift_cards': ['Multiple copies of the same gift card secret are not allowed']}
+
+
+@pytest.mark.django_db
+def test_order_create_use_gift_card_invalid_secret(token_client, organizer, event, item, quota, question):
+    res = copy.deepcopy(ORDER_CREATE_PAYLOAD)
+    res['positions'][0]['item'] = item.pk
+    res['positions'][0]['answers'][0]['question'] = question.pk
+    with scopes_disabled():
+        customer = organizer.customers.create()
+
+    res['customer'] = customer.identifier
+    res['api_meta'] = {
+        'test': 1
+    }
+    del res['payment_provider']
+
+    gc_enough_eur = GiftCard.objects.create(issuer=organizer, currency='EUR')
+    gc_enough_eur.transactions.create(value=Decimal("100.00"),
+                                      acceptor=organizer).save()
+
+    res['use_gift_cards'] = ["INVALID", gc_enough_eur.secret]
+
+    resp = token_client.post(
+        '/api/v1/organizers/{}/events/{}/orders/'.format(
+            organizer.slug, event.slug
+        ), format='json', data=res
+    )
+    assert resp.status_code == 201
+
+    with scopes_disabled():
+        o = Order.objects.get(code=resp.data['code'])
+        assert o.status == Order.STATUS_PAID
+        assert o.payments.count() == 2
+        assert o.payments.all()[0].state == OrderPayment.PAYMENT_STATE_FAILED
+        assert o.payments.all()[1].state == OrderPayment.PAYMENT_STATE_CONFIRMED