Fix #1313 accept cash app payments (#1318)

Co-authored-by: Remon <>

example/lib/screens/regional_payment_methods/cash_app_screen.dart

@@ -0,0 +1,89 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_stripe/flutter_stripe.dart';
+import 'package:http/http.dart' as http;
+import 'package:stripe_example/widgets/example_scaffold.dart';
+import 'package:stripe_example/widgets/loading_button.dart';
+
+import '../../config.dart';
+
+class CashAppScreen extends StatelessWidget {
+  const CashAppScreen({Key? key}) : super(key: key);
+
+  Future<Map<String, dynamic>> _createPaymentIntent() async {
+    final url = Uri.parse('$kApiUrl/create-payment-intent');
+    final response = await http.post(
+      url,
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: json.encode({
+        'currency': 'usd',
+        'payment_method_types': ['cashapp'],
+        'amount': 6000
+      }),
+    );
+
+    return json.decode(response.body);
+  }
+
+  Future<void> _pay(BuildContext context) async {
+    // Precondition:
+    //Make sure to have set a custom URI scheme in your app and add it to Stripe SDK
+    // see file main.dart in this example app.
+    // 1. on the backend create a payment intent for payment method and save the
+    // client secret.
+    final result = await _createPaymentIntent();
+    final clientSecret = await result['clientSecret'];
+
+    // 2. use the client secret to confirm the payment and handle the result.
+    try {
+      await Stripe.instance.confirmPayment(
+        paymentIntentClientSecret: clientSecret,
+        data: PaymentMethodParams.cashAppPay(
+          paymentMethodData: PaymentMethodData(),
+        ),
+      );
+
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text('Payment succesfully completed'),
+        ),
+      );
+    } on Exception catch (e) {
+      if (e is StripeException) {
+        print('blaat $e');
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text(
+                'Error from Stripe: ${e.error.localizedMessage ?? e.error.code}'),
+          ),
+        );
+      } else {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text('Unforeseen error: ${e}'),
+          ),
+        );
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ExampleScaffold(
+      title: 'Cashapp',
+      tags: ['Payment method'],
+      padding: EdgeInsets.all(16),
+      children: [
+        LoadingButton(
+          onPressed: () async {
+            await _pay(context);
+          },
+          text: 'Pay',
+        ),
+      ],
+    );
+  }
+}

example/lib/screens/screens.dart

@@ -5,6 +5,7 @@ import 'package:stripe_example/screens/payment_sheet/payment_sheet_screen.dart';
 import 'package:stripe_example/screens/payment_sheet/payment_sheet_screen_custom_flow.dart';
 import 'package:stripe_example/screens/regional_payment_methods/ali_pay_screen.dart';
 import 'package:stripe_example/screens/regional_payment_methods/aubecs_debit.dart';
+import 'package:stripe_example/screens/regional_payment_methods/cash_app_screen.dart';
 import 'package:stripe_example/screens/regional_payment_methods/fpx_screen.dart';
 import 'package:stripe_example/screens/regional_payment_methods/ideal_screen.dart';
 import 'package:stripe_example/screens/regional_payment_methods/klarna_screen.dart';
@@ -221,6 +222,11 @@ class Example extends StatelessWidget {
         builder: (context) => AliPayScreen(),
         platformsSupported: [DevicePlatform.android, DevicePlatform.ios],
       ),
+      Example(
+        title: 'Cash app Pay',
+        builder: (context) => CashAppScreen(),
+        platformsSupported: [DevicePlatform.android, DevicePlatform.ios],
+      ),
       Example(
         title: 'Ideal',
         leading: Image.asset(

packages/stripe/README.md

@@ -156,10 +156,16 @@ Future<void> onGooglePayResult(paymentResult) async {
   - [Get your test Stripe API keys](https://stripe.com/docs/keys)
   - `cp lib/.env.example.dart lib/.env.dart` and set your Stripe publishable key.
   - `cp server/.env.example server/.env` and set the variable values in your newly created `.env` file.
-- Install the server dependencies: `npm install` or `yarn --cwd "server"`
+- Install the server dependencies in the `server` directory: 
+  * `cd server`
+  * `npm install` or `yarn --cwd "server"`
 - Start the example
-  - Terminal 1: `npm start` or `yarn --cwd "server" start`
-  - Terminal 2: `flutter run`
+  - Terminal 1: 
+    * Move to the `server` directory: `cd server`
+    * Run npm or yarn: `npm start` or `yarn --cwd "server" start`
+  - Terminal 2: 
+    * Move to the `lib` directory: `cd lib`
+    * Run flutter: `flutter run`
 
 ##### Additional steps for webhook forwarding
 

packages/stripe_platform_interface/lib/src/models/payment_methods.dart

@@ -358,9 +358,9 @@ class PaymentMethodParams with _$PaymentMethodParams {
   }) = _PaymentMethodParamsAlipay;
 
   @JsonSerializable(explicitToJson: true)
-  @FreezedUnionValue('CashAppPay')
+  @FreezedUnionValue('CashApp')
 
-  /// Config parameters for Alipay card payment method.
+  /// Config parameters for cashapp payment method.
   const factory PaymentMethodParams.cashAppPay({
     /// Paymentmethod data for this paymentmethod.
     required PaymentMethodData paymentMethodData,

packages/stripe_platform_interface/lib/src/models/payment_methods.freezed.dart

@@ -2859,7 +2859,7 @@ PaymentMethodParams _$PaymentMethodParamsFromJson(Map<String, dynamic> json) {
       return _PaymentMethodParamsCardWithMethodId.fromJson(json);
     case 'Alipay':
       return _PaymentMethodParamsAlipay.fromJson(json);
-    case 'CashAppPay':
+    case 'CashApp':
       return _PaymentMethodParamsCashAppPay.fromJson(json);
     case 'Ideal':
       return _PaymentMethodParamsIdeal.fromJson(json);
@@ -4389,7 +4389,7 @@ class _$_PaymentMethodParamsCashAppPay
     implements _PaymentMethodParamsCashAppPay {
   const _$_PaymentMethodParamsCashAppPay(
       {required this.paymentMethodData, final String? $type})
-      : $type = $type ?? 'CashAppPay';
+      : $type = $type ?? 'CashApp';
 
   factory _$_PaymentMethodParamsCashAppPay.fromJson(
           Map<String, dynamic> json) =>