Flutter SDK

dependencies:
  esaalat: ^1.0.0

import 'package:esaalat/esaalat.dart';

final client = EsaalatClient(
  clientId: 'your-client-id',
  clientSecret: 'your-client-secret',
  baseUrl: 'https://api.esaalat.com', // api.sandbox.esaalat.com for sandbox
);

import 'package:esaalat/esaalat.dart';

// Launch checkout portal
await PortalController.launch(
  context,
  config: PortalConfig(
    baseUrl: 'https://checkout.esaalat.com', // api.sandbox.esaalat.com for sandbox
    orderId: orderId,
    events: PortalEvents(
      onComplete: () {
        print('Payment completed!');
        Navigator.pop(context);
      },
      onClose: () {
        print('Portal closed');
      },
      onSuspicious: () {
        print('Suspicious activity detected');
      },
    ),
  ),
);

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

class CheckoutScreen extends StatefulWidget {
  @override
  _CheckoutScreenState createState() => _CheckoutScreenState();
}

class _CheckoutScreenState extends State<CheckoutScreen> {
  final client = EsaalatClient(
    clientId: 'your-client-id',
    clientSecret: 'your-client-secret',
    baseUrl: 'https://api.esaalat.com', // api.sandbox.esaalat.com for sandbox
  );

  Future<void> _startCheckout() async {
    try {
      // 1. Get subscriptions
      final subscriptions = await client.getSubscriptions();
      final activeSub = subscriptions.firstWhere(
        (s) => s.isActive && s.canReceive,
      );

      // 2. Create order
      final orderId = await client.createOrder(
        CreateOrderParams(
          subscriptionId: activeSub.id,
          items: [
            OrderItem(
              name: 'Premium T-Shirt',
              description: '100% cotton, size L',
              price: 29.99,
              quantity: 2,
            ),
          ],
          currency: Currency.usd,
        ),
      );

      // 3. Open portal
      await PortalController.launch(
        context,
        config: PortalConfig(
          baseUrl: 'https://checkout.esaalat.com', // api.sandbox.esaalat.com for sandbox
          orderId: orderId,
          events: PortalEvents(
            onComplete: () async {
              // 4. Verify order status
              final order = await client.getOrder(orderId);
              if (order.status == 'COMPLETED') {
                ScaffoldMessenger.of(context).showSnackBar(
                  SnackBar(content: Text('Payment successful!')),
                );
              }
            },
            onSuspicious: () {
              ScaffoldMessenger.of(context).showSnackBar(
                SnackBar(content: Text('Suspicious activity detected')),
              );
            },
          ),
        ),
      );
    } on ValidationException catch (e) {
      print('Validation error: $e');
    } on AuthenticationException catch (e) {
      print('Auth error: $e');
    } catch (e) {
      print('Error: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('Checkout')),
      body: Center(
        child: ElevatedButton(
          onPressed: _startCheckout,
          child: Text('Start Checkout'),
        ),
      ),
    );
  }
}

import 'package:esaalat/esaalat.dart';

final client = EsaalatClient(
  clientId: 'your-client-id',
  clientSecret: 'your-client-secret',
  baseUrl: 'https://api.esaalat.com', // api.sandbox.esaalat.com for sandbox
);

try {
  await client.createOrder(params);
} on ValidationException catch (e) {
  print('Validation error: $e');
  // Handle invalid input
} on AuthenticationException catch (e) {
  print('Auth error: $e');
  // Handle authentication failure
} on OrderNotFoundException catch (e) {
  print('Order not found: $e');
  // Handle missing order
} on NetworkException catch (e) {
  print('Network error: $e');
  // Handle network issues
} on APIException catch (e) {
  print('API error: $e');
  // Handle API errors
} catch (e) {
  print('Unexpected error: $e');
  // Handle other errors
}