Fix new STPApplePayContext result delegate method on Objective-C (#1414)

CHANGELOG.md

@@ -2,6 +2,9 @@
 ### PaymentSheet
 * [Fixed] Fixed potential crash when using Link in Mac Catalyst.
 
+### Apple Pay
+* [Fixed] Fixed an issue where `applePayContext:willCompleteWithResult:authorizationResult:handler:` may not be called in Objective-C implementations of `STPApplePayContextDelegate`.
+
 ## 22.8.0 2022-09-06
 ### PaymentSheet
 * [Changed] Renamed `PaymentSheet.reset()` to `PaymentSheet.resetCustomer()`. See `MIGRATING.md` for more info.

Example/Non-Card Payment Examples/Non-Card Payment Examples/ApplePayExampleViewController.m

@@ -179,4 +179,18 @@ - (void)applePayContext:(STPApplePayContext *)context didSelectShippingMethod:(P
     completion([[PKPaymentRequestShippingMethodUpdate alloc] initWithPaymentSummaryItems:updatedSummaryItems]);
 }
 
+- (void)applePayContext:(STPApplePayContext *)context willCompleteWithResult:(PKPaymentAuthorizationResult *)authorizationResult handler:(void (^)(PKPaymentAuthorizationResult * _Nonnull))handler {
+#ifdef __IPHONE_16_0
+    if (@available(iOS 16.0, *)) {
+        authorizationResult.orderDetails = [[PKPaymentOrderDetails alloc]
+                                            initWithOrderTypeIdentifier: @"com.myapp.order"
+                                            orderIdentifier: @"ABC123-AAAA-1111"
+                                            webServiceURL: [NSURL URLWithString:@"https://my-backend.example.com/apple-order-tracking-backend"]
+                                            authenticationToken: @"abc123"];
+    }
+#endif
+    handler(authorizationResult);
+}
+
+
 @end

Stripe/_stpobjc_STPApplePayContext.swift

@@ -135,6 +135,19 @@ public protocol STPApplePayContextDelegate: _stpinternal_STPApplePayContextDeleg
         didSelectShippingContact contact: PKContact,
         handler: @escaping (_ update: PKPaymentRequestShippingContactUpdate) -> Void
     )
+
+    /// Optionally configure additional information on your PKPaymentAuthorizationResult.
+    /// This closure will be called after the PaymentIntent or SetupIntent is confirmed, but before
+    /// the Apple Pay sheet has been closed.
+    /// In your implementation, you can configure the PKPaymentAuthorizationResult to add custom fields, such as `orderDetails`.
+    /// See https://developer.apple.com/documentation/passkit/pkpaymentauthorizationresult for all configuration options.
+    /// This method is optional. If you implement this, you must call the handler block with the PKPaymentAuthorizationResult on the main queue.
+    /// WARNING: If you do not call the completion handler, your app will hang until the Apple Pay sheet times out.
+    @objc optional func applePayContext(
+        _ context: _stpobjc_APContext,
+        willCompleteWithResult authorizationResult: PKPaymentAuthorizationResult,
+        handler: @escaping (_ authorizationResult: PKPaymentAuthorizationResult) -> Void
+    )
 }
 
 
@@ -155,6 +168,10 @@ class STPApplePayContextBridgeDelegate: NSObject, STPApplePayContextDelegate {
         objcDelegate?.applePayContext?(.init(applePayContext: context), didSelectShippingContact: contact, handler: handler)
     }
 
+    func applePayContext(_ context: STPApplePayContext, willCompleteWithResult authorizationResult: PKPaymentAuthorizationResult, handler: @escaping (PKPaymentAuthorizationResult) -> Void) {
+        objcDelegate?.applePayContext?(.init(applePayContext: context), willCompleteWithResult: authorizationResult, handler: handler)
+    }
+
     /// :nodoc:
     public override func responds(to aSelector: Selector!) -> Bool {
         // Pass through responds(to:) so that we only respond to the shipping/contact