direct_pay_core 0.0.1

Core payment engine for Direct Pay (S2S) — server-to-server payment SDK for Flutter with SHA-512 hashing, 3D Secure WebView, and structured logging.

example/lib/main.dart

/// Example demonstrating how to use `direct_pay_core` via a branded wrapper.
///
/// In production, merchants use a branded package (e.g., `rd_direct_pay`)
/// which internally depends on `direct_pay_core`. This example shows the
/// core API directly for reference.
library;

import 'package:flutter/material.dart';
import 'package:direct_pay_core/direct_pay_core.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();

  DirectPayConfig.init(
    appId: '<YOUR_APP_ID>',
    merchantKey: '<YOUR_MERCHANT_KEY>',
    baseUrl: 'https://gateway.example.com',
  );

  runApp(const CoreExample());
}

class CoreExample extends StatelessWidget {
  const CoreExample({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Direct Pay Core Example',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.indigo),
        useMaterial3: true,
      ),
      home: const PaymentPage(),
    );
  }
}

class PaymentPage extends StatefulWidget {
  const PaymentPage({super.key});

  @override
  State<PaymentPage> createState() => _PaymentPageState();
}

class _PaymentPageState extends State<PaymentPage> {
  bool _processing = false;
  DirectPayResponse? _result;

  Future<void> _pay() async {
    setState(() => _processing = true);

    final request = DirectPayRequest(
      orderId: 'ORD_${DateTime.now().millisecondsSinceEpoch}',
      amount: '1000',
      custName: 'John Doe',
      custFirstName: 'John',
      custLastName: 'Doe',
      custAddress: '123 Main Street',
      custCity: 'Dubai',
      custState: 'Dubai',
      custCountry: 'AE',
      custZip: '99999',
      custPhone: '9876543210',
      custEmail: '[e-mail]',
      productDesc: 'Test Payment',
      cardNumber: '4111111111111111',
      cardExpDt: '122028',
      cvv: '123',
    );

    final response = await DirectPayService.processPayment(context, request);

    if (!mounted) return;
    setState(() {
      _processing = false;
      _result = response;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Core Example')),
      body: Center(
        child: _processing
            ? const CircularProgressIndicator()
            : Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  FilledButton.icon(
                    onPressed: _pay,
                    icon: const Icon(Icons.payment),
                    label: const Text('Pay 10.00'),
                  ),
                  if (_result != null) ...[
                    const SizedBox(height: 16),
                    Text(
                      _result!.isSuccess ? 'Success' : 'Failed',
                      style: Theme.of(context).textTheme.titleLarge,
                    ),
                    Text('Code: ${_result!.responseCode}'),
                    Text('Message: ${_result!.responseMessage}'),
                  ],
                ],
              ),
      ),
    );
  }
}