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baron-sso/frontend/lib/features/auth/presentation/login_screen.dart

396 lines
14 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:descope/descope.dart';
import 'package:go_router/go_router.dart';
import 'package:url_launcher/url_launcher_string.dart';
import '../../../core/services/audit_service.dart';
import '../../../core/services/web_auth_integration.dart';
import '../../../core/services/auth_proxy_service.dart';
class LoginScreen extends ConsumerStatefulWidget {
const LoginScreen({super.key});
@override
ConsumerState<LoginScreen> createState() => _LoginScreenState();
}
class _LoginScreenState extends ConsumerState<LoginScreen>
with SingleTickerProviderStateMixin {
late TabController _tabController;
final TextEditingController _emailController = TextEditingController();
final TextEditingController _passwordController = TextEditingController();
final TextEditingController _phoneController = TextEditingController();
final TextEditingController _smsCodeController = TextEditingController();
bool _smsSent = false;
@override
void initState() {
super.initState();
_tabController = TabController(length: 2, vsync: this);
// Check for 't' token in URL (Magic Link / Enchanted Link verification)
WidgetsBinding.instance.addPostFrameCallback((_) {
final uri = Uri.base;
if (uri.queryParameters.containsKey('t')) {
_verifyToken(uri.queryParameters['t']!);
}
});
}
Future<void> _verifyToken(String token) async {
try {
// Use Proxy to verify token
await AuthProxyService.verifyMagicLink(token);
if (mounted) {
_showSuccessDialog();
}
} catch (e) {
// Ignore "Missing session JWT" if it happens (though proxy might handle it differently)
if (e.toString().contains("Missing session JWT")) {
if (mounted) _showSuccessDialog();
return;
}
if (mounted) {
_showError("Verification failed: $e");
}
}
}
void _showSuccessDialog() {
showDialog(
context: context,
barrierDismissible: false,
builder: (context) => const AlertDialog(
title: Text("Authentication Successful"),
content: Text("You can close this tab and return to the application."),
),
);
}
@override
void dispose() {
_tabController.dispose();
_emailController.dispose();
_passwordController.dispose();
_phoneController.dispose();
_smsCodeController.dispose();
super.dispose();
}
Future<void> _handleEmailLogin() async {
final email = _emailController.text.trim();
if (email.isEmpty) return;
final password = _passwordController.text;
if (password.isNotEmpty) {
// Email + Password Flow (Keep SDK as is, assuming Password flow might work or fail same way.
// If password flow fails too, we need proxy for that as well. But let's focus on Enchanted Link first as requested.)
try {
final authResponse = await Descope.password.signIn(
loginId: email,
password: password,
);
final session = DescopeSession.fromAuthenticationResponse(authResponse);
Descope.sessionManager.manageSession(session);
await AuditService.logEvent(
userId: session.user?.userId ?? email,
eventType: 'login_success',
status: 'success',
details: 'Method: Email/Password',
);
if (mounted) {
final token = session.sessionToken.jwt;
if (WebAuthIntegration.isPopup()) {
WebAuthIntegration.sendLoginSuccess(token);
_showError("Login Successful! You can close this window.");
} else {
context.go('/dashboard');
}
}
} catch (e) {
_showError("Email/Password Login Failed: $e");
}
} else {
// Enchanted Link Flow (via Proxy)
try {
// 1. Init via Proxy
final initData = await AuthProxyService.initEnchantedLink(email);
final linkId = initData['linkId'];
final pendingRef = initData['pendingRef'];
if (mounted) {
showDialog(
context: context,
barrierDismissible: false,
builder: (context) => AlertDialog(
title: const Text("Check your Email"),
content: Column(
mainAxisSize: MainAxisSize.min,
children: [
Text("We sent an email to $email"),
const SizedBox(height: 16),
Text(
"Security Number: $linkId",
style: const TextStyle(fontSize: 24, fontWeight: FontWeight.bold, color: Colors.blue),
),
const SizedBox(height: 8),
const Text("Click the matching number in your email."),
const SizedBox(height: 16),
const LinearProgressIndicator(),
const SizedBox(height: 16),
],
),
),
);
// 2. Poll via Proxy (Loop until success or timeout)
String sessionToken = "";
int attempts = 0;
const maxAttempts = 60; // 2 minutes (assuming 2s delay)
while (attempts < maxAttempts && mounted) {
attempts++;
try {
final pollData = await AuthProxyService.pollEnchantedLink(pendingRef);
// Send log to backend
// AuthProxyService.logError("[DEBUG] Poll response keys: ${pollData.keys.toList()}");
// Descope API returns 'sessionJwt', not 'sessionToken'
var tokenObj = pollData['sessionJwt'] ?? pollData['sessionToken'];
if (tokenObj != null) {
if (tokenObj is Map) {
sessionToken = tokenObj['jwt'] ?? "";
} else if (tokenObj is String) {
sessionToken = tokenObj;
}
}
if (sessionToken.isNotEmpty) {
break; // Success!
}
} catch (e) {
// Check if it's the "pending" error. If so, continue.
// The error message from backend is likely a string in exception.
// A robust implementation would parse the error code.
// For PoC, we just assume any error means "not ready yet" unless it's a fatal one.
// Let's print debug but continue.
print("Polling attempt $attempts: Waiting... ($e)");
}
await Future.delayed(const Duration(seconds: 2));
}
if (sessionToken.isEmpty) {
throw Exception("Polling timed out or failed.");
}
// Note: pollData structure depends on what Descope API returns.
// Usually it returns full auth response.
// Let's assume we get the JWT string directly or extract it.
// The proxy just forwards the JSON. Descope /poll returns standard auth info.
// Manually handle session if needed or just use token.
// For PoC, we prioritize token handoff.
await AuditService.logEvent(
userId: email, // We might not have full user object yet
eventType: 'login_success',
status: 'success',
details: 'Method: Email/EnchantedLink/Proxy',
);
if (mounted) {
Navigator.of(context).pop(); // Close Dialog
if (WebAuthIntegration.isPopup()) {
WebAuthIntegration.sendLoginSuccess(sessionToken);
_showError("Login Successful! You can close this window.");
} else {
// For dashboard, we might need to properly init Descope session.
// Since we bypassed SDK, Descope.sessionManager.session is null.
// We can try to hydrate it if SDK allows, or just ignore for now if this is primarily a Launcher.
_showError("Login Successful (Standalone mode limited without SDK session)");
// context.go('/dashboard');
}
}
}
} catch (e) {
if (mounted && Navigator.canPop(context)) {
// Close dialog if open? logic is tricky without state, but let's assume error means stop.
Navigator.of(context).pop();
}
_showError("Enchanted Link Failed (Proxy): $e");
}
}
}
Future<void> _handleSmsLogin() async {
final phone = _phoneController.text.trim();
if (phone.isEmpty) return;
try {
await AuthProxyService.sendSms(phone);
setState(() {
_smsSent = true;
});
} catch (e) {
_showError("Failed to send SMS: $e");
}
}
Future<void> _handleSmsVerification() async {
// For now, just show a success message
_showSuccessDialog();
}
void _showError(String message) {
if (!mounted) return;
// Show Snackbar
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(message), backgroundColor: Colors.red),
);
// Send log to backend for Docker visibility
try {
// Use AuthProxyService base URL logic or dotenv, but for simplicity here use relative or direct.
// Since we are in the same network context as Proxy, we can assume localhost:3000 or relative path if deployed.
// But Flutter Web runs in browser, so we need the full URL reachable from browser.
// We'll use the same host logic as AuthProxyService (which uses dotenv BACKEND_URL).
// Since we can't easily import http here without clutter, we'll invoke a helper method if available,
// or just add the http call here. We already import AuthProxyService.
// Let's add a log method to AuthProxyService to keep it clean.
AuthProxyService.logError(message);
} catch (e) {
print("Failed to send log to backend: $e");
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Container(
constraints: const BoxConstraints(maxWidth: 400),
padding: const EdgeInsets.all(24),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Text(
"Baron SSO",
style: GoogleFonts.outfit(
fontSize: 32,
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
const SizedBox(height: 40),
// Tab Bar
TabBar(
controller: _tabController,
tabs: const [
Tab(text: "Email"),
Tab(text: "Phone (SMS)"),
],
),
const SizedBox(height: 24),
// Tab View Content
SizedBox(
height: 300, // Slightly increased height for content
child: TabBarView(
controller: _tabController,
children: [
// Email/Password Form
Column(
children: [
TextField(
controller: _emailController,
decoration: const InputDecoration(
labelText: "Email",
border: OutlineInputBorder(),
prefixIcon: Icon(Icons.email_outlined),
),
),
const SizedBox(height: 16),
TextField(
controller: _passwordController,
obscureText: true,
decoration: const InputDecoration(
labelText: "Password",
border: OutlineInputBorder(),
prefixIcon: Icon(Icons.lock_outline),
),
),
const SizedBox(height: 24),
FilledButton(
onPressed: _handleEmailLogin,
style: FilledButton.styleFrom(
minimumSize: const Size.fromHeight(50),
),
child: const Text("Sign In"),
),
],
),
// Phone/SMS Form
Column(
children: [
if (!_smsSent) ...[
TextField(
controller: _phoneController,
decoration: const InputDecoration(
labelText: "Phone Number",
hintText: "+82 10-1234-5678",
border: OutlineInputBorder(),
prefixIcon: Icon(Icons.phone_android),
),
),
const SizedBox(height: 24),
FilledButton(
onPressed: _handleSmsLogin,
style: FilledButton.styleFrom(
minimumSize: const Size.fromHeight(50),
),
child: const Text("Send Verification Code"),
),
] else ...[
TextField(
controller: _smsCodeController,
decoration: const InputDecoration(
labelText: "Verification Code",
border: OutlineInputBorder(),
prefixIcon: Icon(Icons.password),
),
),
const SizedBox(height: 24),
FilledButton(
onPressed: _handleSmsVerification,
style: FilledButton.styleFrom(
minimumSize: const Size.fromHeight(50),
),
child: const Text("Verify Code"),
),
],
],
),
],
),
),
],
),
),
),
);
}
}