tajniak81
111 lines
3.7 KiB
Dart
111 lines
3.7 KiB
Dart
import "package:flutter/material.dart";
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import "../biometric.dart";
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import "../main.dart";
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import "../theme.dart";
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/// Shown when the app is authenticated but locked (biometric login is enabled
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/// and the app was just launched or resumed). The session token is still valid;
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/// a successful biometric check simply reveals the app. "Use password" drops the
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/// session and returns to the login screen.
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class LockScreen extends StatefulWidget {
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const LockScreen({super.key});
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@override
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State<LockScreen> createState() => _LockScreenState();
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}
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class _LockScreenState extends State<LockScreen> {
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bool _busy = false;
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String? _error;
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@override
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void initState() {
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super.initState();
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// Prompt once as soon as the lock screen appears.
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WidgetsBinding.instance.addPostFrameCallback((_) => _unlock());
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}
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Future<void> _unlock() async {
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if (_busy) return;
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setState(() {
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_busy = true;
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_error = null;
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});
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try {
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final creds = await biometricAuth.unlock(reason: "Unlock DriverVault");
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if (creds == null) {
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// Cancelled — leave locked; the buttons let them retry or use password.
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if (mounted) setState(() => _busy = false);
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return;
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}
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// Token from a previous session is still held by ApiClient; just reveal.
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authService.unlock();
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} on BiometricException catch (e) {
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if (mounted) setState(() => _error = e.message);
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} catch (e) {
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if (mounted) setState(() => _error = e.toString());
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} finally {
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if (mounted) setState(() => _busy = false);
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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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final u = authService.user;
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final name = u == null ? null : (u.name.isNotEmpty ? u.name : u.email);
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return Scaffold(
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body: Center(
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child: Padding(
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padding: const EdgeInsets.all(24),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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Container(
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width: 64,
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height: 64,
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decoration: BoxDecoration(
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color: DriverVault.brand700,
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borderRadius: BorderRadius.circular(16),
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),
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child: const Icon(Icons.lock_outline, color: Colors.white, size: 32),
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),
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const SizedBox(height: 16),
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const Text("DriverVault is locked",
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style: TextStyle(fontSize: 20, fontWeight: FontWeight.w700, letterSpacing: -0.4)),
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if (name != null)
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Padding(
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padding: const EdgeInsets.only(top: 4),
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child: Text(name, style: TextStyle(color: DriverVault.muted(context))),
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),
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const SizedBox(height: 24),
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if (_error != null)
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Padding(
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padding: const EdgeInsets.only(bottom: 12),
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child: Text(_error!,
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textAlign: TextAlign.center,
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style: const TextStyle(color: DriverVault.danger)),
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),
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SizedBox(
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width: 260,
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child: FilledButton.icon(
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onPressed: _busy ? null : _unlock,
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icon: const Icon(Icons.fingerprint),
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label: Padding(
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padding: const EdgeInsets.symmetric(vertical: 10),
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child: Text(_busy ? "Unlocking…" : "Unlock"),
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),
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),
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),
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const SizedBox(height: 8),
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TextButton(
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onPressed: _busy ? null : () => authService.logout(),
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child: const Text("Use password instead"),
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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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