328 lines
11 KiB
Dart
328 lines
11 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:haveno/grpc_models.dart';
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import 'package:haveno/haveno_client.dart';
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class SeedNodeSetupScreen extends StatefulWidget {
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const SeedNodeSetupScreen({super.key});
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@override
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_SeedNodeSetupScreenState createState() => _SeedNodeSetupScreenState();
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}
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class _SeedNodeSetupScreenState extends State<SeedNodeSetupScreen> with SingleTickerProviderStateMixin {
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final TextEditingController _seedNodeController = TextEditingController();
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final _formKey = GlobalKey<FormState>();
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bool _isConnecting = false;
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bool _connectionSuccessful = false;
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bool _connectionError = false;
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bool _isHovered = false;
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Color _iconColor = Colors.white;
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IconData _connectionIcon = Icons.cloud;
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// Animation controller for shaking the icon
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late AnimationController _shakeController;
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late Animation<double> _shakeAnimation;
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// Regex for validating V3 Onion addresses
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final _onionRegex = RegExp(r'^[a-zA-Z2-7]{56}\.onion$');
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@override
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void initState() {
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super.initState();
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// Initialize shake animation
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_shakeController = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 500),
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);
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_shakeAnimation = Tween<double>(begin: 0, end: 10).chain(
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CurveTween(curve: Curves.elasticIn),
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).animate(_shakeController)
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..addStatusListener((status) {
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if (status == AnimationStatus.completed) {
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_shakeController.reverse();
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}
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});
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}
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@override
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void dispose() {
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_shakeController.dispose();
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_seedNodeController.dispose();
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super.dispose();
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}
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Future<void> _verifySeedNode(String seedNodeInput) async {
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setState(() {
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_isConnecting = true;
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_connectionError = false;
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_iconColor = Colors.blue;
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});
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try {
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// Extract the seed node (no need for port checking here)
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String seedNode = seedNodeInput;
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print('Connecting to $seedNode');
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// Try to connect to Haveno and check its version
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bool isVersionValid = await checkGprcVersion(seedNode, Duration(seconds: 30));
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if (isVersionValid) {
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// Connection successful
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setState(() {
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_iconColor = Colors.green;
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_connectionIcon = Icons.cloud_done;
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_connectionSuccessful = true;
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});
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// Proceed to the next screen after a short delay
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await Future.delayed(const Duration(seconds: 1));
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Navigator.pop(context, true);
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} else {
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// Connection failed
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_showConnectionError();
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}
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} catch (e) {
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print('Error: $e');
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_showConnectionError();
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} finally {
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setState(() {
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_isConnecting = false;
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});
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}
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}
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Future<bool> checkGprcVersion(String address, Duration timeout) async {
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try {
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HavenoChannel havenoChannel = HavenoChannel();
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havenoChannel.connect(address, 3201, 'boner');
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await havenoChannel.onConnected;
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var versionResponse = await havenoChannel.versionClient?.getVersion(GetVersionRequest());
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if (versionResponse?.version != null && versionResponse!.version.isNotEmpty) {
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return true;
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} else {
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return false;
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}
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} catch (e) {
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return false; // Connection failed
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}
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}
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void _showConnectionError() {
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_shakeController.forward(from: 0); // Start the shake animation
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setState(() {
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_iconColor = Colors.red;
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_connectionIcon = Icons.cloud_off;
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_connectionError = true;
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});
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}
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void _showSeedNodeInfo() {
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// Show a dialog with information about seed nodes
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showDialog(
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context: context,
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builder: (BuildContext context) {
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return AlertDialog(
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title: Text('What is a Seed Node?'),
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content: Text(
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'A seed node is a server that helps your client connect to the network. Please enter the address of a seed node to proceed. You can include the port number if necessary, e.g., your-seed-node.onion.',
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),
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actions: [
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TextButton(
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child: Text('Got it'),
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onPressed: () {
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Navigator.of(context).pop();
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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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void _toggleHover(bool hover) {
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setState(() {
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_isHovered = hover;
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});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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body: Stack(
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children: [
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Center(
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 32.0),
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child: SingleChildScrollView(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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Column(
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children: [
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Image.asset(
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'assets/haveno-logo.png',
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height: 100,
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),
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const SizedBox(height: 16),
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AnimatedBuilder(
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animation: _shakeAnimation,
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builder: (context, child) {
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return Transform.translate(
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offset: Offset(_shakeAnimation.value, 0),
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child: Icon(
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_connectionIcon,
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size: 48,
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color: _iconColor,
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),
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);
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},
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),
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const SizedBox(height: 16),
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],
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),
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Text(
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'Enter Seed Node',
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style: const TextStyle(
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fontSize: 24,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 24),
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Form(
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key: _formKey,
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child: Column(
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children: [
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TextFormField(
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controller: _seedNodeController,
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decoration: InputDecoration(
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labelText: 'Seed Node Address',
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hintText: 'e.g., yourseednodeaddresshere.onion',
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(8.0),
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),
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suffixIcon: IconButton(
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icon: Icon(
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Icons.info_outline,
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),
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onPressed: _showSeedNodeInfo,
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),
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),
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validator: (value) {
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if (value == null || value.isEmpty) {
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return 'Please enter a seed node address.';
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}
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if (!_onionRegex.hasMatch(value)) {
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return 'Invalid V3 Onion Address.';
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}
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return null;
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},
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),
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const SizedBox(height: 24),
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ElevatedButton(
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onPressed: _isConnecting
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? null
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: () {
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if (_formKey.currentState!.validate()) {
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_verifySeedNode(_seedNodeController.text);
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}
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},
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child: _isConnecting
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? SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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color: Colors.white,
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strokeWidth: 2,
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),
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)
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: Text('Connect'),
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),
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if (_connectionError)
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Padding(
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padding: const EdgeInsets.only(top: 16.0),
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child: Text(
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'Connection failed. Please try again.',
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style: TextStyle(color: Colors.red),
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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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Positioned(
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bottom: 16,
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right: 16,
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child: MouseRegion(
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cursor: SystemMouseCursors.click,
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onEnter: (_) => _toggleHover(true),
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onExit: (_) => _toggleHover(false),
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child: GestureDetector(
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onTap: _showSeedNodeInfo,
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child: Tooltip(
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message: 'Learn more about seed nodes.',
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(
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Icons.help_outline,
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color: _isHovered ? Colors.orange : Colors.grey.withOpacity(0.46),
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),
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const SizedBox(width: 4),
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SizedBox(
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height: 20,
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child: Stack(
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children: [
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Text(
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'What is a Seed Node?',
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style: TextStyle(
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color: _isHovered ? Colors.white : Colors.grey.withOpacity(0.46),
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fontSize: 14,
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decoration: TextDecoration.none,
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),
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),
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Positioned(
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bottom: -2,
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left: 0,
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right: 0,
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child: Container(
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height: 2,
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color: _isHovered ? Colors.orange : Colors.transparent,
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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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),
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],
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),
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);
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}
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}
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class NextScreen extends StatelessWidget {
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const NextScreen({super.key});
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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body: Center(
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child: Text('Connected to Seed Node!'),
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),
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);
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}
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}
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