ton_wallet_v4 1.0.0

A Flutter plugin for generating TON blockchain wallets, mnemonics, and fetching wallet assets.

example/lib/main.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:ton_wallet_v4/ton_wallet_bridge.dart';

void main() {
  runApp(const TonV4WalletExample());
}

class TonV4WalletExample extends StatelessWidget {
  const TonV4WalletExample({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: TonExamplePage());
  }
}
class TonExamplePage extends StatefulWidget {
  const TonExamplePage({super.key});

  @override
  State<TonExamplePage> createState() => _TonExamplePageState();
}

class _TonExamplePageState extends State<TonExamplePage> {
  final TonWallet _bridge = TonWallet();
  final TextEditingController _mnemonicController = TextEditingController();
  final TextEditingController _addressController = TextEditingController(text: 'UQDl1TmBo5PIgq0nW-cz2raZuleMLm99sO-uvGcr6S1B2rOM');

  String _status = 'Generate mnemonic or enter your own mnemonic.';
  String _walletJson = '';
  Map<String, dynamic> _assets = {};
  bool _loading = false;

  @override
  void dispose() {
    _mnemonicController.dispose();
    _addressController.dispose();
    super.dispose();
  }

  List<String> _mnemonicWords() {
    return _mnemonicController.text
        .trim()
        .split(RegExp(r'\s+'))
        .where((e) => e.isNotEmpty)
        .toList();
  }

  Future<void> _generateMnemonic() async {
    setState(() => _loading = true);
    try {
      final words = await _bridge.generateMnemonic();
      setState(() {
        _mnemonicController.text = words.join(' ');
        _status = 'Generated ${words.length}-word mnemonic.';
      });
    } on PlatformException catch (e) {
      setState(() => _status = e.message ?? e.code);
    } finally {
      if (mounted) {
        setState(() => _loading = false);
      }
    }
  }

  Future<void> _generateWallet() async {
    final mnemonic = _mnemonicWords();
    if (mnemonic.isEmpty) {
      setState(() => _status = 'Mnemonic is required.');
      return;
    }

    setState(() => _loading = true);
    try {
      final wallet = await _bridge.generateV4Wallet(mnemonic: mnemonic);
      setState(() {
        _walletJson = const JsonEncoder.withIndent('  ').convert(wallet);
        // _addressController.text = wallet['address'] ?? '';
        _status = 'V4 wallet generated.';
      });
    } on PlatformException catch (e) {
      setState(() => _status = e.message ?? e.code);
    } finally {
      if (mounted) {
        setState(() => _loading = false);
      }
    }
  }

  Future<void> _fetchAssets() async {
    final address = _addressController.text.trim();
    if (address.isEmpty) {
      setState(() => _status = 'Address is required.');
      return;
    }

    setState(() => _loading = true);
    try {
      final assets = await _bridge.fetchAssets(address: address);
      setState(() {
        _assets = assets;
        _status = 'Assets fetched successfully.';
      });
    } on PlatformException catch (e) {
      setState(() => _status = 'Error: ${e.message ?? e.code}');
    } finally {
      if (mounted) {
        setState(() => _loading = false);
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('TON Flutter Example')),
      body: Padding(
        padding: const EdgeInsets.all(16),
        child: ListView(
          children: [
            // Mnemonic Section
            const Text(
              'Mnemonic',
              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
            ),
            const SizedBox(height: 8),
            TextField(
              controller: _mnemonicController,
              minLines: 3,
              maxLines: 5,
              decoration: const InputDecoration(
                labelText: 'Mnemonic (space separated)',
                border: OutlineInputBorder(),
              ),
            ),
            const SizedBox(height: 8),
            Wrap(
              spacing: 8,
              runSpacing: 8,
              children: [
                FilledButton(
                  onPressed: _loading ? null : _generateMnemonic,
                  child: const Text('Generate Mnemonic'),
                ),
                FilledButton(
                  onPressed: _loading ? null : _generateWallet,
                  child: const Text('Generate V4 Wallet'),
                ),
              ],
            ),
            const SizedBox(height: 16),

            // Wallet Data Section
            const Text(
              'Wallet Data',
              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
            ),
            const SizedBox(height: 8),
            Container(
              padding: const EdgeInsets.all(12),
              decoration: BoxDecoration(
                border: Border.all(color: Colors.grey.shade300),
                borderRadius: BorderRadius.circular(4),
              ),
              child: SelectableText(
                _walletJson.isEmpty ? 'No wallet generated yet.' : _walletJson,
                style: const TextStyle(fontSize: 12),
              ),
            ),
            const SizedBox(height: 16),

            // Assets Section
            const Text(
              'Assets',
              style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
            ),
            const SizedBox(height: 8),
            TextField(
              controller: _addressController,
              decoration: const InputDecoration(
                labelText: 'Wallet Address',
                border: OutlineInputBorder(),
              ),
            ),
            const SizedBox(height: 8),
            FilledButton(
              onPressed: _loading ? null : _fetchAssets,
              child: const Text('Fetch Assets'),
            ),
            const SizedBox(height: 16),

            // Assets Display
            if (_assets.isNotEmpty)
              _buildAssetsDisplay()
            else
              const Text('No assets loaded. Enter address and fetch assets.'),

            const SizedBox(height: 16),
            Text('Status: $_status'),
          ],
        ),
      ),
    );
  }

  Widget _buildAssetsDisplay() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Container(
          padding: const EdgeInsets.all(12),
          decoration: BoxDecoration(
            color: Colors.blue.shade50,
            borderRadius: BorderRadius.circular(4),
            border: Border.all(color: Colors.blue.shade200),
          ),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Text(
                'TON Balance',
                style: TextStyle(
                  fontWeight: FontWeight.bold,
                  color: Colors.blue.shade700,
                ),
              ),
              const SizedBox(height: 8),
              Text(
                '${_assets['tonBalance'] ?? '0'} TON',
                style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w600),
              ),
              const SizedBox(height: 4),
              Text(
                'Nanotons: ${_assets['tonBalanceNano'] ?? '0'}',
                style: TextStyle(fontSize: 12, color: Colors.grey.shade600),
              ),
            ],
          ),
        ),
        const SizedBox(height: 16),
        const Text(
          'Tokens',
          style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
        ),
        const SizedBox(height: 8),
        _buildJettonsList(),
      ],
    );
  }

  Widget _buildJettonsList() {
    final jettons = _assets['jettons'] as List<dynamic>? ?? [];

    if (jettons.isEmpty) {
      return Container(
        padding: const EdgeInsets.all(12),
        decoration: BoxDecoration(
          color: Colors.grey.shade100,
          borderRadius: BorderRadius.circular(4),
        ),
        child: const Text('No tokens found.'),
      );
    }
    // UQDl1TmBo5PIgq0nW-cz2raZuleMLm99sO-uvGcr6S1B2rOM

    return ListView.builder(
      shrinkWrap: true,
      physics: const NeverScrollableScrollPhysics(),
      itemCount: jettons.length,
      itemBuilder: (context, index) {
        final jettonData = jettons[index];
        final jetton = jettonData is Map
            ? Map<String, dynamic>.from(jettonData as Map)
            : <String, dynamic>{};
        return Card(
          margin: const EdgeInsets.only(bottom: 8),
          child: ListTile(
            title: Text(jetton['name'] ?? 'Unknown Token'),
            subtitle: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                const SizedBox(height: 4),
                Text(
                  'Symbol: ${jetton['symbol'] ?? '???'}',
                  style: const TextStyle(fontSize: 12),
                ),
                Text(
                  'Balance: ${jetton['balance'] ?? '0'}',
                  style: const TextStyle(fontSize: 12, fontWeight: FontWeight.w500),
                ),
                if (jetton['jettonAddress'] != null)
                  Text(
                    'Address: ${jetton['jettonAddress']}',
                    style: const TextStyle(fontSize: 10, color: Colors.grey),
                    maxLines: 1,
                    overflow: TextOverflow.ellipsis,
                  ),
              ],
            ),
          ),
        );
      },
    );
  }
}