mirror of
https://github.com/dz0ny/meshcore-sar.git
synced 2026-08-11 16:30:28 +00:00
095458ece4
- Add MeshCoreSerialService to meshcore_client (0x3C/0x3E framing) - Add usb_serial package for Android USB OTG - Add UsbSerialTransport wrapper for Android - Add USB tab to connection dialog (scan, select, connect) - Add ConnectionMode.usb + connectSerial/disconnectSerial - Web Serial stub (not yet implemented) - Fix message limits: DM 156→150, Channel 127→160 (firmware MAX_TEXT_LEN=160)
840 lines
30 KiB
Dart
840 lines
30 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter/foundation.dart';
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import 'package:provider/provider.dart';
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import 'package:meshcore_client/meshcore_client.dart' hide Contact;
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import 'package:usb_serial/usb_serial.dart';
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import '../providers/connection_provider.dart';
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import '../providers/app_provider.dart';
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import '../services/network_scanner_service.dart';
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import '../l10n/app_localizations.dart';
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/// Connection Dialog with tabs for BLE devices and Network servers
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class ConnectionDialog extends StatefulWidget {
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const ConnectionDialog({super.key});
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@override
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State<ConnectionDialog> createState() => _ConnectionDialogState();
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}
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class _ConnectionDialogState extends State<ConnectionDialog>
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with SingleTickerProviderStateMixin {
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late TabController _tabController;
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late final ConnectionProvider _connectionProvider;
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final NetworkScannerService _networkScanner = NetworkScannerService();
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final List<DiscoveredServer> _discoveredServers = [];
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int _scannedCount = 0;
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int _totalToScan = 0;
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int _lastTabIndex = 0;
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String?
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_connectingToServerKey; // Track which server is being connected to (ip:port)
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// Named listener method for proper cleanup
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void _onTabChanged() {
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if (_tabController.index == _lastTabIndex) return;
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_lastTabIndex = _tabController.index;
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if (_tabController.index == 0) {
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_refreshBleDevices();
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}
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if (_tabController.index == 1) {
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// Switched to network tab
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if (_networkScanner.hasCachedResults && _discoveredServers.isEmpty) {
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// Load cached results
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setState(() {
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_discoveredServers.addAll(_networkScanner.cachedServers);
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});
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debugPrint(
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'📦 [NetworkScanner] Loaded ${_discoveredServers.length} servers from cache',
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);
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} else if (!_networkScanner.isScanning &&
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!_networkScanner.hasCachedResults) {
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// No cache, start initial scan
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_startNetworkScan();
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}
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}
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}
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@override
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void initState() {
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super.initState();
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_tabController = TabController(length: 3, vsync: this);
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_connectionProvider = Provider.of<ConnectionProvider>(
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context,
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listen: false,
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);
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// Defer scan startup until after the first frame so Provider listeners
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// are not notified while this dialog is still being built.
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (!mounted) return;
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_refreshBleDevices();
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});
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// Set up network scanner callbacks
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_networkScanner.onServerDiscovered = (server) {
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if (mounted) {
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setState(() {
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// Only add if not already in the list (deduplicate)
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if (!_discoveredServers.contains(server)) {
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_discoveredServers.add(server);
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}
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});
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}
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};
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_networkScanner.onProgressUpdate = (scanned, total) {
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if (mounted) {
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setState(() {
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_scannedCount = scanned;
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_totalToScan = total;
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});
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}
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};
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// Listen to tab changes using named method for proper cleanup
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_tabController.addListener(_onTabChanged);
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}
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@override
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void dispose() {
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_connectionProvider.stopScan();
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_networkScanner.stopScan();
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// Remove listener before disposing to prevent memory leaks
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_tabController.removeListener(_onTabChanged);
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_tabController.dispose();
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super.dispose();
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}
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void _startNetworkScan() {
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setState(() {
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_discoveredServers.clear();
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_scannedCount = 0;
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_totalToScan = 0;
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});
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_networkScanner.clearCache(); // Clear cache before starting new scan
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_networkScanner.scan();
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}
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Future<void> _refreshBleDevices() async {
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await _connectionProvider.stopScan();
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if (!mounted) return;
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await _connectionProvider.startScan();
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}
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Color _getSignalColor(int rssi) {
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if (rssi >= -60) return Colors.green;
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if (rssi >= -75) return Colors.orange;
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return Colors.red;
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}
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@override
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Widget build(BuildContext context) {
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final connectionProvider = context.watch<ConnectionProvider>();
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return Container(
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height: MediaQuery.of(context).size.height * 0.9,
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.surface,
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borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
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),
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child: Column(
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children: [
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// Header
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Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.surfaceContainerHighest,
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borderRadius: const BorderRadius.vertical(
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top: Radius.circular(20),
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),
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),
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child: Column(
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children: [
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Row(
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children: [
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IconButton(
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icon: Icon(
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Icons.arrow_back,
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color: Theme.of(context).colorScheme.onSurface,
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),
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onPressed: () {
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Navigator.pop(context);
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},
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),
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Expanded(
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child: Text(
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AppLocalizations.of(context)!.appTitle,
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textAlign: TextAlign.center,
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurface,
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fontSize: 18,
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fontWeight: FontWeight.bold,
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),
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),
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),
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const SizedBox(width: 48), // Balance the back button
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],
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),
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const SizedBox(height: 8),
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// Tab Bar
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TabBar(
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controller: _tabController,
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tabs: const [
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Tab(text: 'BLE', icon: Icon(Icons.bluetooth)),
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Tab(text: 'Network', icon: Icon(Icons.wifi)),
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Tab(text: 'USB', icon: Icon(Icons.usb)),
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],
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),
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],
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),
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),
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// Tab Content
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Expanded(
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child: TabBarView(
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controller: _tabController,
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children: [
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// BLE Devices Tab
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_buildBleDevicesTab(connectionProvider),
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// Network Servers Tab
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_buildNetworkServersTab(),
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// USB Serial Tab
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_buildUsbTab(connectionProvider),
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],
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),
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),
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],
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),
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);
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}
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Widget _buildBleDevicesTab(ConnectionProvider connectionProvider) {
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return Column(
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children: [
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// Info banner
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Container(
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margin: const EdgeInsets.all(16),
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.primaryContainer,
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borderRadius: BorderRadius.circular(8),
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),
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child: Row(
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children: [
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Icon(
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Icons.info_outline,
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color: Theme.of(context).colorScheme.onPrimaryContainer,
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),
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SizedBox(width: 12),
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Expanded(
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child: Text(
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AppLocalizations.of(context)!.defaultPinInfo,
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style: TextStyle(
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color: Theme.of(context).colorScheme.onPrimaryContainer,
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fontSize: 13,
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),
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),
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),
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IconButton(
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icon: Icon(
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Icons.refresh,
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color: Theme.of(context).colorScheme.onPrimaryContainer,
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),
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onPressed: _refreshBleDevices,
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),
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],
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),
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),
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// Device list
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Expanded(
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child:
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connectionProvider.isScanning &&
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connectionProvider.scannedDevices.isEmpty
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? const Center(child: CircularProgressIndicator())
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: connectionProvider.scannedDevices.isEmpty
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? Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(
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Icons.bluetooth_searching,
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size: 64,
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color: Theme.of(
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context,
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).colorScheme.onSurfaceVariant.withValues(alpha: 0.5),
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),
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SizedBox(height: 16),
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Text(
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AppLocalizations.of(context)!.noDevicesFound,
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurfaceVariant,
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fontSize: 16,
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),
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),
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const SizedBox(height: 8),
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TextButton.icon(
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onPressed: _refreshBleDevices,
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icon: Icon(Icons.refresh),
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label: Text(AppLocalizations.of(context)!.scanAgain),
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),
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],
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),
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)
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: ListView.builder(
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itemCount: connectionProvider.scannedDevices.length,
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itemBuilder: (context, index) {
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final scannedDevice =
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connectionProvider.scannedDevices[index];
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final device = scannedDevice.device;
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final rssi = scannedDevice.rssi;
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final signalColor = _getSignalColor(rssi);
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return Container(
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margin: const EdgeInsets.symmetric(
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horizontal: 16,
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vertical: 4,
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),
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decoration: BoxDecoration(
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color: Theme.of(
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context,
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).colorScheme.surfaceContainerHighest,
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borderRadius: BorderRadius.circular(12),
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border: Border.all(
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color: Theme.of(
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context,
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).colorScheme.outline.withValues(alpha: 0.2),
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width: 1,
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),
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),
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child: ListTile(
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contentPadding: const EdgeInsets.symmetric(
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horizontal: 16,
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vertical: 8,
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),
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leading: Icon(
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Icons.bluetooth,
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color: signalColor,
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size: 32,
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),
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title: Text(
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device.platformName.isNotEmpty
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? device.platformName
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: 'Unknown Device',
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurface,
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fontSize: 16,
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fontWeight: FontWeight.w500,
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),
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),
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subtitle: Row(
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children: [
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Text(
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AppLocalizations.of(context)!.tapToConnect,
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style: TextStyle(
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color: Theme.of(
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context,
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).colorScheme.onSurfaceVariant,
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fontSize: 14,
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),
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),
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const SizedBox(width: 8),
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Text(
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'$rssi dBm',
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style: TextStyle(
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color: signalColor,
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fontSize: 12,
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fontWeight: FontWeight.w500,
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),
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),
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],
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),
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trailing: Icon(
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Icons.chevron_right,
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color: Theme.of(context).colorScheme.onSurfaceVariant,
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),
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onTap: () async {
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final appProvider = context.read<AppProvider>();
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Navigator.pop(context);
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final success = await connectionProvider.connect(
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device,
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);
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if (success &&
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connectionProvider.deviceInfo.isConnected) {
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await appProvider.initialize();
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}
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},
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),
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);
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},
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),
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),
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],
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);
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}
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Widget _buildNetworkServersTab() {
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final bool showingCachedResults =
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!_networkScanner.isScanning &&
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_networkScanner.hasCachedResults &&
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_discoveredServers.isNotEmpty;
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return Column(
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children: [
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// Info banner
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Container(
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margin: const EdgeInsets.fromLTRB(16, 16, 16, 16),
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.primaryContainer,
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borderRadius: BorderRadius.circular(8),
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),
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child: Row(
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children: [
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Icon(
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showingCachedResults ? Icons.cached : Icons.info_outline,
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color: Theme.of(context).colorScheme.onPrimaryContainer,
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),
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const SizedBox(width: 12),
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Expanded(
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child: Text(
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showingCachedResults
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? 'Showing cached results. Tap refresh to rescan.'
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: 'Scanning local network for MeshCore WiFi devices on port 5000',
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style: TextStyle(
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color: Theme.of(context).colorScheme.onPrimaryContainer,
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fontSize: 13,
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),
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),
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),
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IconButton(
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icon: Icon(
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Icons.refresh,
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color: Theme.of(context).colorScheme.onPrimaryContainer,
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),
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onPressed: _startNetworkScan,
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),
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],
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),
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),
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// Scan progress
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if (_networkScanner.isScanning)
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Container(
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margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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child: Column(
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children: [
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LinearProgressIndicator(
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value: _totalToScan > 0 ? _scannedCount / _totalToScan : null,
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),
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const SizedBox(height: 8),
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Text(
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'Scanning... $_scannedCount/${_totalToScan > 0 ? _totalToScan : "?"} IPs',
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style: Theme.of(context).textTheme.bodySmall,
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),
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],
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),
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),
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// Server list
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Expanded(
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child: _networkScanner.isScanning && _discoveredServers.isEmpty
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? const Center(child: CircularProgressIndicator())
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: _discoveredServers.isEmpty
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? Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(
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Icons.wifi_off,
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size: 64,
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color: Theme.of(
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context,
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).colorScheme.onSurfaceVariant.withValues(alpha: 0.5),
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),
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const SizedBox(height: 16),
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Text(
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'No servers found',
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurfaceVariant,
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fontSize: 16,
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),
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),
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const SizedBox(height: 8),
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TextButton.icon(
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onPressed: _startNetworkScan,
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icon: const Icon(Icons.refresh),
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label: const Text('Scan Again'),
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),
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],
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),
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)
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: ListView.builder(
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itemCount: _discoveredServers.length,
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itemBuilder: (context, index) {
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final server = _discoveredServers[index];
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final serverKey = '${server.ipAddress}:${server.port}';
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final isConnectingToThisServer =
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_connectingToServerKey == serverKey;
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final isAnyConnectionInProgress =
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_connectingToServerKey != null;
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return Container(
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margin: const EdgeInsets.symmetric(
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horizontal: 16,
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vertical: 4,
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),
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decoration: BoxDecoration(
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color: Theme.of(
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context,
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).colorScheme.surfaceContainerHighest,
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borderRadius: BorderRadius.circular(12),
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border: Border.all(
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color: isConnectingToThisServer
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? Theme.of(context).colorScheme.primary
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: Theme.of(
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context,
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).colorScheme.outline.withValues(alpha: 0.2),
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width: isConnectingToThisServer ? 2 : 1,
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),
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),
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child: ListTile(
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contentPadding: const EdgeInsets.symmetric(
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horizontal: 16,
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vertical: 8,
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),
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leading: isConnectingToThisServer
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? SizedBox(
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width: 32,
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height: 32,
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child: CircularProgressIndicator(
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strokeWidth: 3,
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color: Theme.of(context).colorScheme.primary,
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),
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)
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: const Icon(
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Icons.wifi,
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color: Colors.green,
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size: 32,
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),
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title: Text(
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server.ipAddress,
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurface,
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fontSize: 16,
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fontWeight: FontWeight.w500,
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),
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),
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subtitle: Text(
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isConnectingToThisServer
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? 'Connecting...'
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: 'Port ${server.port} • ${server.responseTime}ms',
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style: TextStyle(
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color: isConnectingToThisServer
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? Theme.of(context).colorScheme.primary
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: Theme.of(
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context,
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).colorScheme.onSurfaceVariant,
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fontSize: 14,
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fontWeight: isConnectingToThisServer
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? FontWeight.w500
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: FontWeight.normal,
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),
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),
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trailing: isConnectingToThisServer
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? null
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: Icon(
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Icons.chevron_right,
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color: Theme.of(
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context,
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).colorScheme.onSurfaceVariant,
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),
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enabled: !isAnyConnectionInProgress,
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onTap: isAnyConnectionInProgress
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? null
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: () async {
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// Capture context-dependent objects before async operations
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final connectionProvider = context
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.read<ConnectionProvider>();
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final appProvider = context.read<AppProvider>();
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final navigator = Navigator.of(context);
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final messenger = ScaffoldMessenger.of(context);
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// Mark this server as connecting
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setState(() {
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_connectingToServerKey = serverKey;
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});
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|
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try {
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// Pre-verify server is still available
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final isAvailable = await _networkScanner
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.verifyServer(server);
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if (!isAvailable) {
|
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throw Exception(
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'Server at ${server.ipAddress}:${server.port} is no longer available. '
|
|
'Please scan again to find active servers.',
|
|
);
|
|
}
|
|
|
|
await connectionProvider.connectTcp(
|
|
server.ipAddress,
|
|
server.port,
|
|
);
|
|
await appProvider.initialize();
|
|
|
|
if (mounted) {
|
|
navigator.pop();
|
|
}
|
|
} catch (e) {
|
|
// Clear connecting state on error
|
|
if (mounted) {
|
|
setState(() {
|
|
_connectingToServerKey = null;
|
|
});
|
|
|
|
// Clean up error message (remove "Exception: " prefix)
|
|
String errorMessage = e.toString();
|
|
if (errorMessage.startsWith(
|
|
'Exception: ',
|
|
)) {
|
|
errorMessage = errorMessage.substring(
|
|
'Exception: '.length,
|
|
);
|
|
}
|
|
if (errorMessage.startsWith(
|
|
'Connection failed: Exception: ',
|
|
)) {
|
|
errorMessage = errorMessage.substring(
|
|
'Connection failed: Exception: '.length,
|
|
);
|
|
} else if (errorMessage.startsWith(
|
|
'Connection failed: ',
|
|
)) {
|
|
errorMessage = errorMessage.substring(
|
|
'Connection failed: '.length,
|
|
);
|
|
}
|
|
|
|
messenger.showSnackBar(
|
|
SnackBar(
|
|
content: Text(errorMessage),
|
|
backgroundColor: Colors.red,
|
|
duration: const Duration(seconds: 5),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
},
|
|
),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
],
|
|
);
|
|
}
|
|
|
|
Widget _buildUsbTab(ConnectionProvider connectionProvider) {
|
|
return _UsbDeviceList(
|
|
onConnected: () {
|
|
if (mounted) Navigator.of(context).pop();
|
|
},
|
|
);
|
|
}
|
|
}
|
|
|
|
class _UsbDeviceList extends StatefulWidget {
|
|
final VoidCallback onConnected;
|
|
|
|
const _UsbDeviceList({required this.onConnected});
|
|
|
|
@override
|
|
State<_UsbDeviceList> createState() => _UsbDeviceListState();
|
|
}
|
|
|
|
class _UsbDeviceListState extends State<_UsbDeviceList> {
|
|
List<UsbDevice> _devices = [];
|
|
bool _isScanning = false;
|
|
bool _isConnecting = false;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
if (defaultTargetPlatform == TargetPlatform.android) {
|
|
_scanDevices();
|
|
}
|
|
}
|
|
|
|
Future<void> _scanDevices() async {
|
|
setState(() => _isScanning = true);
|
|
try {
|
|
final devices = await UsbSerial.listDevices();
|
|
if (!mounted) return;
|
|
setState(() {
|
|
_devices = devices;
|
|
_isScanning = false;
|
|
});
|
|
} catch (e) {
|
|
if (!mounted) return;
|
|
setState(() {
|
|
_devices = [];
|
|
_isScanning = false;
|
|
});
|
|
}
|
|
}
|
|
|
|
Future<void> _connectToDevice(UsbDevice device) async {
|
|
setState(() => _isConnecting = true);
|
|
try {
|
|
final connectionProvider = context.read<ConnectionProvider>();
|
|
final service = MeshCoreSerialService(appName: 'MeshCore SAR');
|
|
|
|
final port = await device.create();
|
|
if (port == null) {
|
|
if (mounted) {
|
|
setState(() => _isConnecting = false);
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
const SnackBar(content: Text('Failed to create USB port')),
|
|
);
|
|
}
|
|
return;
|
|
}
|
|
|
|
final opened = await port.open();
|
|
if (!opened) {
|
|
if (mounted) {
|
|
setState(() => _isConnecting = false);
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
const SnackBar(content: Text('Failed to open USB port')),
|
|
);
|
|
}
|
|
return;
|
|
}
|
|
|
|
await port.setDTR(true);
|
|
await port.setRTS(true);
|
|
await port.setPortParameters(
|
|
115200,
|
|
UsbPort.DATABITS_8,
|
|
UsbPort.STOPBITS_1,
|
|
UsbPort.PARITY_NONE,
|
|
);
|
|
|
|
service.writeRaw = (data) async {
|
|
await port.write(data);
|
|
};
|
|
|
|
port.inputStream?.listen(
|
|
(data) => service.feedRawBytes(data),
|
|
onError: (_) {
|
|
service.markDisconnected();
|
|
port.close();
|
|
},
|
|
onDone: () {
|
|
service.markDisconnected();
|
|
},
|
|
);
|
|
|
|
final sessionOk = await service.markConnected();
|
|
if (!sessionOk) {
|
|
await port.close();
|
|
if (mounted) {
|
|
setState(() => _isConnecting = false);
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
const SnackBar(content: Text('USB session initialization failed')),
|
|
);
|
|
}
|
|
return;
|
|
}
|
|
|
|
final success = await connectionProvider.connectSerial(service);
|
|
if (!mounted) return;
|
|
|
|
if (success) {
|
|
widget.onConnected();
|
|
} else {
|
|
await port.close();
|
|
setState(() => _isConnecting = false);
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
const SnackBar(content: Text('Failed to connect via USB')),
|
|
);
|
|
}
|
|
} catch (e) {
|
|
if (!mounted) return;
|
|
setState(() => _isConnecting = false);
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
SnackBar(content: Text('USB error: $e')),
|
|
);
|
|
}
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
if (defaultTargetPlatform != TargetPlatform.android) {
|
|
return Center(
|
|
child: Padding(
|
|
padding: const EdgeInsets.all(24),
|
|
child: Text(
|
|
kIsWeb
|
|
? 'Web Serial is not yet supported.\nUse BLE or Network instead.'
|
|
: 'USB serial is available on Android only.\nConnect via OTG cable.',
|
|
textAlign: TextAlign.center,
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
if (_isScanning) {
|
|
return const Center(child: CircularProgressIndicator());
|
|
}
|
|
|
|
return Column(
|
|
children: [
|
|
Padding(
|
|
padding: const EdgeInsets.all(12),
|
|
child: OutlinedButton.icon(
|
|
onPressed: _isConnecting ? null : _scanDevices,
|
|
icon: const Icon(Icons.refresh),
|
|
label: const Text('Scan USB devices'),
|
|
),
|
|
),
|
|
if (_devices.isEmpty)
|
|
const Expanded(
|
|
child: Center(
|
|
child: Text(
|
|
'No USB serial devices found.\nConnect a MeshCore device via OTG cable.',
|
|
textAlign: TextAlign.center,
|
|
),
|
|
),
|
|
)
|
|
else
|
|
Expanded(
|
|
child: ListView.builder(
|
|
itemCount: _devices.length,
|
|
itemBuilder: (context, index) {
|
|
final device = _devices[index];
|
|
return ListTile(
|
|
leading: const Icon(Icons.usb),
|
|
title: Text(device.productName ?? 'USB Device'),
|
|
subtitle: Text(device.manufacturerName ?? ''),
|
|
trailing: _isConnecting
|
|
? const SizedBox(
|
|
width: 20,
|
|
height: 20,
|
|
child: CircularProgressIndicator(strokeWidth: 2),
|
|
)
|
|
: const Icon(Icons.chevron_right),
|
|
onTap: _isConnecting ? null : () => _connectToDevice(device),
|
|
);
|
|
},
|
|
),
|
|
),
|
|
],
|
|
);
|
|
}
|
|
}
|