PProv: Implement detection of wallets such as Google Pay and Apple Pay (#3444)

Co-authored-by: Richard Schreiber <schreiber@rami.io>

src/pretix/plugins/stripe/payment.py

@@ -59,7 +59,9 @@ from pretix import __version__
 from pretix.base.decimal import round_decimal
 from pretix.base.forms import SecretKeySettingsField
 from pretix.base.models import Event, OrderPayment, OrderRefund, Quota
-from pretix.base.payment import BasePaymentProvider, PaymentException
+from pretix.base.payment import (
+    BasePaymentProvider, PaymentException, WalletQueries,
+)
 from pretix.base.plugins import get_all_plugins
 from pretix.base.services.mail import SendMailException
 from pretix.base.settings import SettingsSandbox
@@ -219,6 +221,20 @@ class StripeSettingsHolder(BasePaymentProvider):
             ]
 
         extra_fields = [
+            ('walletdetection',
+             forms.BooleanField(
+                 label=mark_safe(
+                     _('Check for Apple Pay/Google Pay') +
+                     ' ' +
+                     '<span class="label label-info">{}</span>'.format(_('experimental'))
+                 ),
+                 help_text=_("pretix will attempt to check if the customer's webbrowser supports wallet-based payment "
+                             "methods like Apple Pay or Google Pay and display them prominently with the credit card"
+                             "payment method. This detection does not take into consideration if Google Pay/Apple Pay "
+                             "has been disabled in the Stripe Dashboard."),
+                 initial=True,
+                 required=False,
+             )),
             ('postfix',
              forms.CharField(
                  label=_('Statement descriptor postfix'),
@@ -747,6 +763,15 @@ class StripeCC(StripeMethod):
     public_name = _('Credit card')
     method = 'cc'
 
+    @property
+    def walletqueries(self):
+        # ToDo: Check against Stripe API, if ApplePay and GooglePay are even activated/available
+        # This is probably only really feasable once the Payment Methods Configuration API is out of beta
+        # https://stripe.com/docs/connect/payment-method-configurations
+        if self.settings.get("walletdetection", True, as_type=bool):
+            return [WalletQueries.APPLEPAY, WalletQueries.GOOGLEPAY]
+        return []
+
     def payment_form_render(self, request, total) -> str:
         account = get_stripe_account_key(self)
         if not RegisteredApplePayDomain.objects.filter(account=account, domain=request.host).exists():