➕ Add the success/failure handling from Dart side for Apple Pay

pay/example/ios/Podfile.lock

@@ -19,10 +19,10 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/pay_ios/ios"
 
 SPEC CHECKSUMS:
-  Flutter: 50d75fe2f02b26cc09d224853bb45737f8b3214a
+  Flutter: f04841e97a9d0b0a8025694d0796dd46242b2854
   integration_test: a1e7d09bd98eca2fc37aefd79d4f41ad37bdbbe5
   pay_ios: 8c7beb9c61d885f3f51b61f75f8793023fc8843a
 
-PODFILE CHECKSUM: fc81e398f362bae88bdf55239bd5cf842faad39f
+PODFILE CHECKSUM: ef19549a9bc3046e7bb7d2fab4d021637c0c58a3
 
-COCOAPODS: 1.11.3
+COCOAPODS: 1.12.1

pay/example/ios/Runner/Info.plist

@@ -43,5 +43,7 @@
 	<false/>
 	<key>CADisableMinimumFrameDurationOnPhone</key>
 	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
 </dict>
 </plist>

pay/example/lib/main.dart

@@ -72,6 +72,11 @@ class _PaySampleAppState extends State<PaySampleApp> {
 
   void onApplePayResult(paymentResult) {
     debugPrint(paymentResult.toString());
+    Pay({
+      PayProvider.apple_pay: PaymentConfiguration.fromJsonString(
+        payment_configurations.defaultApplePay,
+      ),
+    }).updatePaymentStatus(true);
   }
 
   @override
@@ -142,7 +147,8 @@ class _PaySampleAppState extends State<PaySampleApp> {
           // Example pay button configured using a string
           ApplePayButton(
             paymentConfiguration: PaymentConfiguration.fromJsonString(
-                payment_configurations.defaultApplePay),
+              payment_configurations.defaultApplePay,
+            ),
             paymentItems: _paymentItems,
             style: ApplePayButtonStyle.black,
             type: ApplePayButtonType.buy,

pay/lib/src/pay.dart

@@ -76,6 +76,12 @@ class Pay {
         _configurations![provider]!, paymentItems);
   }
 
+  /// Update the payment status with the native platform.
+  Future<void> updatePaymentStatus(bool isSuccess) async {
+    await _assetInitializationFuture;
+    return _payPlatform.updatePaymentStatus(isSuccess);
+  }
+
   /// Verifies that the selected provider has been previously configured or
   /// throws otherwise.
   Future throwIfProviderIsNotDefined(PayProvider provider) async {

pay_ios/ios/Classes/PayPlugin.swift

@@ -23,6 +23,7 @@ public class PayPlugin: NSObject, FlutterPlugin {
   private static let methodChannelName = "plugins.flutter.io/pay_channel"
   private let methodUserCanPay = "userCanPay"
   private let methodShowPaymentSelector = "showPaymentSelector"
+  private let methodUpdatePaymentStatus = "updatePaymentStatus"
 
   private let paymentHandler = PaymentHandler()
 
@@ -48,6 +49,10 @@ public class PayPlugin: NSObject, FlutterPlugin {
         paymentConfiguration: arguments["payment_profile"] as! String,
         paymentItems: arguments["payment_items"] as! [[String: Any?]])
 
+    case methodUpdatePaymentStatus:
+      let isSuccess = call.arguments as! Bool
+      paymentHandler.updatePaymentStatus(isSuccess: isSuccess)
+
     default:
       result(FlutterMethodNotImplemented)
     }

pay_ios/ios/Classes/PaymentHandler.swift

@@ -36,6 +36,9 @@ enum PaymentHandlerStatus {
 /// paymentHandler.canMakePayments(stringArguments)
 /// ```
 class PaymentHandler: NSObject {
+
+  /// Holds the completion handler so it can be updated later on from the Flutter side.
+  var completionHandler: PaymentCompletionHandler?
 
   /// Holds the current status of the payment process.
   var paymentHandlerStatus: PaymentHandlerStatus!
@@ -169,6 +172,12 @@ class PaymentHandler: NSObject {
 
     return paymentRequest
   }
+
+  func updatePaymentStatus(isSuccess: Bool) {
+    // Call completion handler with the given success status
+    completionHandler?(isSuccess)
+    completionHandler = nil
+  }
 }
 
 /// Extension that implements the completion methods in the delegate to respond to user selection.
@@ -179,6 +188,11 @@ extension PaymentHandler: PKPaymentAuthorizationControllerDelegate {
   }
 
   func paymentAuthorizationController(_: PKPaymentAuthorizationController, didAuthorizePayment payment: PKPayment, handler completion: @escaping (PKPaymentAuthorizationResult) -> Void) {
+    // Store completion handler
+    completionHandler = { isSuccess in
+      let status: PKPaymentAuthorizationStatus = isSuccess ? .success : .failure
+      completion(PKPaymentAuthorizationResult(status: status, errors: nil))
+    }
 
     // Collect payment result or error and return if no payment was selected
     guard let paymentResultData = try? JSONSerialization.data(withJSONObject: payment.toDictionary()) else {
@@ -190,7 +204,6 @@ extension PaymentHandler: PKPaymentAuthorizationControllerDelegate {
     self.paymentResult(String(decoding: paymentResultData, as: UTF8.self))
 
     paymentHandlerStatus = .authorized
-    completion(PKPaymentAuthorizationResult(status: PKPaymentAuthorizationStatus.success, errors: nil))
   }
 
   func paymentAuthorizationControllerDidFinish(_ controller: PKPaymentAuthorizationController) {

pay_platform_interface/lib/pay_channel.dart

@@ -65,4 +65,10 @@ class PayMethodChannel extends PayPlatform {
 
     return jsonDecode(paymentResult);
   }
+
+  /// Update the payment status with the native platform.
+  @override
+  Future<void> updatePaymentStatus(bool isSuccess) async {
+    return _channel.invokeMethod('updatePaymentStatus', isSuccess);
+  }
 }

pay_platform_interface/lib/pay_platform_interface.dart

@@ -23,4 +23,7 @@ abstract class PayPlatform {
   Future<Map<String, dynamic>> showPaymentSelector(
       PaymentConfiguration paymentConfiguration,
       List<PaymentItem> paymentItems);
+
+  /// Update the payment status received from the backend server.
+  Future<void> updatePaymentStatus(bool isSuccess);
 }