Stripe SCA (#1275)

* Stripe SCA
- Upgrade to latest Stripe API
- Deprecate Stripe Checkout for CC
- Migrate CC payments to Payment Intents

* Move SCA to its own view

* Handle CardErrors for PaymentIntents

* Abilty to handle charge webhooks with PaymentIntents

* Better handling of Stripe References

* Fix Stripe Tests

* Move SCA page into orderlayout; perform iFrame SCA

* Handle disputes and pi-webhooks better, fill more into ReferencedStripeObject

* Optionally pass prefetched PaymentIntent to handle-func

* Fix style

* Send message to window.parent not window.top (widget compatibility)

* More accurate loading message

* Show a cog on sca_return.html. On a good internet connection, you barely see it, but on a bad one…

* Robust error handling

* If it's a method and used like a method, let's actually call it like a method!

* Remove logging statement

* Fix JavaScript interference with other frame events

* Use 4:3 aspect ratio, but at least 600px

* Adjust to django_scopes

src/pretix/plugins/stripe/urls.py

@@ -3,8 +3,8 @@ from django.conf.urls import include, url
 from pretix.multidomain import event_url
 
 from .views import (
-    ReturnView, applepay_association, oauth_disconnect, oauth_return,
-    redirect_view, webhook,
+    ReturnView, ScaReturnView, ScaView, applepay_association, oauth_disconnect,
+    oauth_return, redirect_view, webhook,
 )
 
 event_patterns = [
@@ -12,6 +12,8 @@ event_patterns = [
         event_url(r'^webhook/$', webhook, name='webhook', require_live=False),
         url(r'^redirect/$', redirect_view, name='redirect'),
         url(r'^return/(?P<order>[^/]+)/(?P<hash>[^/]+)/(?P<payment>[0-9]+)/$', ReturnView.as_view(), name='return'),
+        url(r'^sca/(?P<order>[^/]+)/(?P<hash>[^/]+)/(?P<payment>[0-9]+)/$', ScaView.as_view(), name='sca'),
+        url(r'^sca/(?P<order>[^/]+)/(?P<hash>[^/]+)/(?P<payment>[0-9]+)/return/$', ScaReturnView.as_view(), name='sca.return'),
     ])),
 ]