Stripe: Refund webhook implemented (#32)

src/pretix/plugins/stripe/views.py

@@ -0,0 +1,53 @@
+import json
+import logging
+from django.http import HttpResponse
+from django.views.decorators.csrf import csrf_exempt
+from django.views.decorators.http import require_POST
+from pretix.base.models import Order, Event
+from pretix.plugins.stripe.payment import Stripe
+import stripe
+
+
+logger = logging.getLogger('pretix.plugins.stripe')
+
+
+@csrf_exempt
+@require_POST
+def webhook(request):
+    event_json = json.loads(request.body.decode('utf-8'))
+    event_type = event_json['type']
+    if event_type != 'charge.refunded':
+        # Not interested
+        return HttpResponse('Event is not a refund', status=200)
+
+    charge = event_json['data']['object']
+    if charge['object'] != 'charge':
+        return HttpResponse('Object is not a charge', status=200)
+
+    metadata = charge['metadata']
+    if 'event' not in metadata:
+        return HttpResponse('Event not given', status=200)
+
+    try:
+        event = Event.objects.current.get(identity=metadata['event'])
+    except Event.DoesNotExist:
+        return HttpResponse('Event not found', status=200)
+
+    try:
+        order = Order.objects.current.get(identity=metadata['order'])
+    except Order.DoesNotExist:
+        return HttpResponse('Order not found', status=200)
+
+    prov = Stripe(event)
+    prov._init_api()
+
+    try:
+        charge = stripe.Charge.retrieve(charge['id'])
+    except stripe.error.StripeError as err:
+        logger.error('Stripe error on webhook: %s Event data: %s' % (str(err), str(event_json)))
+        return HttpResponse('StripeError', status=500)
+
+    if charge['refunds']['total_count'] > 0 and order.status == Order.STATUS_PAID:
+        order.mark_refunded()
+
+    return HttpResponse(status=200)