veilid/veilid-flutter/example/lib/app.dart

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2022-12-10 17:11:46 +00:00
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:veilid/veilid.dart';
import 'package:loggy/loggy.dart';
import 'log_terminal.dart';
import 'config.dart';
import 'log.dart';
// Main App
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> with UiLoggy {
String _veilidVersion = 'Unknown';
Stream<VeilidUpdate>? _updateStream;
Future<void>? _updateProcessor;
@override
void initState() {
super.initState();
initPlatformState();
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> initPlatformState() async {
String veilidVersion;
// Platform messages may fail, so we use a try/catch PlatformException.
// We also handle the message potentially returning null.
try {
veilidVersion = Veilid.instance.veilidVersionString();
} on Exception {
veilidVersion = 'Failed to get veilid version.';
}
// In case of hot restart shut down first
try {
await Veilid.instance.shutdownVeilidCore();
} on Exception {
//
}
// If the widget was removed from the tree while the asynchronous platform
// message was in flight, we want to discard the reply rather than calling
// setState to update our non-existent appearance.
if (!mounted) return;
setState(() {
_veilidVersion = veilidVersion;
});
}
Future<void> processLog(VeilidLog log) async {
StackTrace? stackTrace;
Object? error;
final backtrace = log.backtrace;
if (backtrace != null) {
stackTrace =
StackTrace.fromString("$backtrace\n${StackTrace.current.toString()}");
error = 'embedded stack trace for ${log.logLevel} ${log.message}';
}
switch (log.logLevel) {
case VeilidLogLevel.error:
loggy.error(log.message, error, stackTrace);
break;
case VeilidLogLevel.warn:
loggy.warning(log.message, error, stackTrace);
break;
case VeilidLogLevel.info:
loggy.info(log.message, error, stackTrace);
break;
case VeilidLogLevel.debug:
loggy.debug(log.message, error, stackTrace);
break;
case VeilidLogLevel.trace:
loggy.trace(log.message, error, stackTrace);
break;
}
}
Future<void> processUpdates() async {
var stream = _updateStream;
if (stream != null) {
await for (final update in stream) {
if (update is VeilidLog) {
await processLog(update);
} else if (update is VeilidAppMessage) {
loggy.info("AppMessage: ${update.json}");
} else if (update is VeilidAppCall) {
loggy.info("AppCall: ${update.json}");
} else {
loggy.trace("Update: ${update.json}");
}
}
}
}
@override
Widget build(BuildContext context) {
final ButtonStyle buttonStyle =
ElevatedButton.styleFrom(textStyle: const TextStyle(fontSize: 20));
return Scaffold(
appBar: AppBar(
title: Text('Veilid Plugin Version $_veilidVersion'),
),
body: Column(children: [
const Expanded(child: LogTerminal()),
Container(
padding: const EdgeInsets.fromLTRB(8, 8, 8, 12),
child: Row(children: [
ElevatedButton(
style: buttonStyle,
onPressed: _updateStream != null
? null
: () async {
var updateStream = await Veilid.instance
.startupVeilidCore(
await getDefaultVeilidConfig());
setState(() {
_updateStream = updateStream;
_updateProcessor = processUpdates();
});
await Veilid.instance.attach();
},
child: const Text('Startup'),
),
ElevatedButton(
style: buttonStyle,
onPressed: _updateStream == null
? null
: () async {
await Veilid.instance.shutdownVeilidCore();
if (_updateProcessor != null) {
await _updateProcessor;
}
setState(() {
_updateProcessor = null;
_updateStream = null;
});
},
child: const Text('Shutdown'),
),
])),
Row(children: [
Expanded(
child: TextField(
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Debug Command'),
textInputAction: TextInputAction.send,
onSubmitted: (String v) async {
loggy.info(await Veilid.instance.debug(v));
})),
DropdownButton<LogLevel>(
value: loggy.level.logLevel,
onChanged: (LogLevel? newLevel) {
setState(() {
setRootLogLevel(newLevel);
});
},
items: const [
DropdownMenuItem<LogLevel>(
value: LogLevel.error, child: Text("Error")),
DropdownMenuItem<LogLevel>(
value: LogLevel.warning, child: Text("Warning")),
DropdownMenuItem<LogLevel>(
value: LogLevel.info, child: Text("Info")),
DropdownMenuItem<LogLevel>(
value: LogLevel.debug, child: Text("Debug")),
DropdownMenuItem<LogLevel>(
value: traceLevel, child: Text("Trace")),
DropdownMenuItem<LogLevel>(
value: LogLevel.all, child: Text("All")),
])
]),
]));
}
}