msrx_flutter 0.1.0

msrx_flutter: ^0.1.0 copied to clipboard

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:msrx_flutter/msrx.dart';
import 'package:msrx_flutter/track_data.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'MSRX Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MSRXDemoPage(),
    );
  }
}

class MSRXDemoPage extends StatefulWidget {
  const MSRXDemoPage({Key? key}) : super(key: key);

  @override
  State<MSRXDemoPage> createState() => _MSRXDemoPageState();
}

class _MSRXDemoPageState extends State<MSRXDemoPage> {
  final MSRX _msrx = MSRX();
  bool _isConnected = false;
  String _statusMessage = 'Not connected';
  TrackData? _cardData;
  final TextEditingController _track1Controller = TextEditingController();
  final TextEditingController _track2Controller = TextEditingController();
  final TextEditingController _track3Controller = TextEditingController();

  @override
  void initState() {
    super.initState();
    _setupConnectionListener();
  }

  void _setupConnectionListener() {
    _msrx.connectionStatus.listen((connected) {
      setState(() {
        _isConnected = connected;
        _statusMessage = connected ? 'Connected' : 'Disconnected';
      });
    });
  }

  Future<void> _connect() async {
    setState(() {
      _statusMessage = 'Connecting...';
    });

    try {
      bool connected = await _msrx.connect();
      setState(() {
        _isConnected = connected;
        _statusMessage = connected ? 'Connected' : 'Connection failed';
      });
    } catch (e) {
      setState(() {
        _statusMessage = 'Connection error: $e';
      });
    }
  }

  Future<void> _disconnect() async {
    try {
      await _msrx.disconnect();
      setState(() {
        _isConnected = false;
        _statusMessage = 'Disconnected';
      });
    } catch (e) {
      setState(() {
        _statusMessage = 'Disconnect error: $e';
      });
    }
  }

  Future<void> _readCard() async {
    if (!_isConnected) {
      setState(() {
        _statusMessage = 'Not connected';
      });
      return;
    }

    setState(() {
      _statusMessage = 'Reading card...';
    });

    try {
      _cardData = await _msrx.readCard(timeout: 5000);
      setState(() {
        _statusMessage = 'Card read successfully';
      });
    } catch (e) {
      setState(() {
        _statusMessage = 'Read error: $e';
        _cardData = null;
      });
    }
  }

  Future<void> _writeCard() async {
    if (!_isConnected) {
      setState(() {
        _statusMessage = 'Not connected';
      });
      return;
    }

    setState(() {
      _statusMessage = 'Writing card...';
    });

    try {
      TrackData dataToWrite = TrackData(
        track1: _track1Controller.text.isNotEmpty ? _track1Controller.text : null,
        track2: _track2Controller.text.isNotEmpty ? _track2Controller.text : null,
        track3: _track3Controller.text.isNotEmpty ? _track3Controller.text : null,
      );

      bool success = await _msrx.writeCard(dataToWrite);
      setState(() {
        _statusMessage = success ? 'Card written successfully' : 'Write failed';
      });
    } catch (e) {
      setState(() {
        _statusMessage = 'Write error: $e';
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('MSRX Demo'),
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            // Status section
            Card(
              child: Padding(
                padding: const EdgeInsets.all(16.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      'Status: $_statusMessage',
                      style: const TextStyle(fontSize: 16),
                    ),
                    const SizedBox(height: 16),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                      children: [
                        ElevatedButton(
                          onPressed: _isConnected ? null : _connect,
                          child: const Text('Connect'),
                        ),
                        ElevatedButton(
                          onPressed: _isConnected ? _disconnect : null,
                          child: const Text('Disconnect'),
                        ),
                      ],
                    ),
                  ],
                ),
              ),
            ),
            const SizedBox(height: 16),

            // Read card section
            Card(
              child: Padding(
                padding: const EdgeInsets.all(16.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    const Text(
                      'Read Card',
                      style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
                    ),
                    const SizedBox(height: 16),
                    ElevatedButton(
                      onPressed: _isConnected ? _readCard : null,
                      child: const Text('Read Card'),
                    ),
                    const SizedBox(height: 16),
                    if (_cardData != null) ...[
                      const Text('Card Data:'),
                      const SizedBox(height: 8),
                      Text('Track 1: ${_cardData!.track1 ?? 'N/A'}'),
                      Text('Track 2: ${_cardData!.track2 ?? 'N/A'}'),
                      Text('Track 3: ${_cardData!.track3 ?? 'N/A'}'),
                    ],
                  ],
                ),
              ),
            ),
            const SizedBox(height: 16),

            // Write card section
            Card(
              child: Padding(
                padding: const EdgeInsets.all(16.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    const Text(
                      'Write Card',
                      style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
                    ),
                    const SizedBox(height: 16),
                    TextField(
                      controller: _track1Controller,
                      decoration: const InputDecoration(
                        labelText: 'Track 1',
                        hintText: 'e.g. %B4111111111111111^SMITH/JOHN^2511?',
                      ),
                    ),
                    const SizedBox(height: 8),
                    TextField(
                      controller: _track2Controller,
                      decoration: const InputDecoration(
                        labelText: 'Track 2',
                        hintText: 'e.g. 4111111111111111=2511?',
                      ),
                    ),
                    const SizedBox(height: 8),
                    TextField(
                      controller: _track3Controller,
                      decoration: const InputDecoration(
                        labelText: 'Track 3 (optional)',
                      ),
                    ),
                    const SizedBox(height: 16),
                    ElevatedButton(
                      onPressed: _isConnected ? _writeCard : null,
                      child: const Text('Write Card'),
                    ),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  @override
  void dispose() {
    _track1Controller.dispose();
    _track2Controller.dispose();
    _track3Controller.dispose();
    _msrx.disconnect();
    super.dispose();
  }
}