moneyhash_payment 4.1.0

MoneyHash is a Super-API infrastructure for payment orchestration and revenue operations in emerging markets.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:moneyhash_payment/data/intent_details.dart';
import 'package:moneyhash_payment/data/intent_type.dart';
import 'package:moneyhash_payment/moneyhash_payment.dart';

import 'payment/payment_screen.dart';
import 'sample_sdk.dart';
import 'scenarios_screen.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const CheckoutScreen(),
    );
  }
}

/// The sample's entry point, matching iOS's `CheckoutScreen.swift` button for button: type an
/// intent, then either walk it through every state the SDK reports, hand the whole checkout to the
/// MoneyHash embed, kill the app to prove the crash flush, or open the one-off scenarios.
class CheckoutScreen extends StatefulWidget {
  const CheckoutScreen({Key? key}) : super(key: key);

  @override
  State<CheckoutScreen> createState() => _CheckoutScreenState();
}

class _CheckoutScreenState extends State<CheckoutScreen> {
  // Typed here rather than compiled in, like the Android and iOS samples. Every intent call sends
  // the secret, so a stale one fails them all with 401 — which is only obvious when you can see and
  // edit it.
  final TextEditingController _intentIdController =
      TextEditingController(text: 'ZG3Xdb4');
  final TextEditingController _intentSecretController =
      TextEditingController(text: 'f593b4304cb094611987');

  String get _intentId => _intentIdController.text.trim();
  String get _intentSecret => _intentSecretController.text.trim();

  /// Same instance as the payment controller and the scenarios screen: building a second one here
  /// would overwrite the public key for the whole app (see [SampleSDK]).
  final MoneyHashSDK _sdk = SampleSDK.shared;

  /// What the last embed run ended with; null until one has finished.
  String? _renderFormResult;

  @override
  void dispose() {
    _intentIdController.dispose();
    _intentSecretController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: const Text('Checkout'),
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            _buildIntentField(_intentIdController, 'Enter Intent ID'),
            const SizedBox(height: 8),
            _buildIntentField(_intentSecretController, 'Enter Intent Secret'),
            const SizedBox(height: 20),
            // Walks the intent through every state the SDK reports, drawing each one with the
            // sample's own views — the equivalent of iOS's "Payment Scenario".
            _buildActionButton('Payment Scenario', _openPaymentScenario),
            // Hands the whole checkout to the MoneyHash embed in one call, skipping the native
            // methods UI: what an integrator does when MoneyHash draws everything.
            _buildActionButton('Render Form Scenario', _runRenderForm),
            if (_renderFormResult != null)
              Padding(
                padding: const EdgeInsets.symmetric(vertical: 8),
                child: Text(
                  _renderFormResult!,
                  style: const TextStyle(fontSize: 13),
                ),
              ),
            // Every one-off call the sample can make, on its own screen.
            _buildActionButton('Scenarios', _openScenarios),
            // Kills the app on purpose, from the sample rather than the SDK: the crash handler the
            // SDK installs is process-wide, so a throw from here exercises it the same way, and the
            // SDK ships no API that can kill a host app. Whatever the SDK had buffered must be on
            // disk on the next launch.
            _buildActionButton(
              'Simulate Crash (telemetry flush test)',
              () => throw StateError(
                  'Simulated crash to verify the crash log flush'),
              color: Colors.black,
            ),
          ],
        ),
      ),
    );
  }

  void _openPaymentScenario() {
    if (_intentId.isEmpty) return;
    Navigator.of(context).push(
      MaterialPageRoute<void>(
        builder: (_) => PaymentScreen(
          intentId: _intentId,
          intentSecret: _intentSecret,
        ),
      ),
    );
  }

  void _openScenarios() {
    Navigator.of(context).push(
      MaterialPageRoute<void>(
        builder: (_) => ScenariosScreen(
          initialIntentId: _intentId,
          initialIntentSecret: _intentSecret,
        ),
      ),
    );
  }

  Future<void> _runRenderForm() async {
    if (_intentId.isEmpty) return;
    final intentId = _intentId;
    _recordRenderFormResult(null);
    print('📱 Starting render form with intent: $intentId');
    _sdk.setIntentSecret(_intentSecret);
    try {
      final IntentDetails? result = await _sdk.renderForm(
        intentId,
        IntentType.payment,
        null,
      );
      _recordRenderFormResult(result == null
          ? 'Render form dismissed without a result'
          : 'Render form finished: status=${result.intent?.status}, '
              'state=${result.intentState?.runtimeType}');
    } catch (error) {
      _recordRenderFormResult('Render form failed: $error');
    }
  }

  void _recordRenderFormResult(String? text) {
    if (text != null) print(text);
    if (mounted) setState(() => _renderFormResult = text);
  }

  /// Rebuilds on every keystroke so anything reading the getters stays in step with what is typed.
  Widget _buildIntentField(TextEditingController controller, String label) {
    return TextField(
      controller: controller,
      onChanged: (_) => setState(() {}),
      decoration: InputDecoration(
        labelText: label,
        hintText: label,
        filled: true,
        border: const OutlineInputBorder(),
        isDense: true,
      ),
    );
  }

  Widget _buildActionButton(String title, VoidCallback onPressed,
      {Color color = const Color(0xFFD62127)}) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 6),
      child: ElevatedButton(
        onPressed: onPressed,
        style: ElevatedButton.styleFrom(
          backgroundColor: color,
          foregroundColor: Colors.white,
          padding: const EdgeInsets.symmetric(vertical: 16),
        ),
        child: Text(title, style: const TextStyle(fontSize: 16)),
      ),
    );
  }
}