ente/mobile/lib/ui/tools/lock_screen.dart

362 lines
12 KiB
Dart

import "dart:async";
import "dart:io";
import "dart:math";
import 'package:flutter/material.dart';
import "package:flutter_animate/flutter_animate.dart";
import 'package:logging/logging.dart';
import "package:photos/core/configuration.dart";
import "package:photos/ente_theme_data.dart";
import "package:photos/generated/l10n.dart";
import "package:photos/l10n/l10n.dart";
import "package:photos/theme/ente_theme.dart";
import "package:photos/ui/components/buttons/icon_button_widget.dart";
import 'package:photos/ui/tools/app_lock.dart';
import 'package:photos/utils/auth_util.dart';
import "package:photos/utils/lockscreen_setting.dart";
class LockScreen extends StatefulWidget {
const LockScreen({Key? key}) : super(key: key);
@override
State<LockScreen> createState() => _LockScreenState();
}
class _LockScreenState extends State<LockScreen>
with WidgetsBindingObserver, TickerProviderStateMixin {
final _logger = Logger("LockScreen");
bool _isShowingLockScreen = false;
bool _hasPlacedAppInBackground = false;
bool _hasAuthenticationFailed = false;
int? lastAuthenticatingTime;
bool isTimerRunning = false;
int lockedTime = 0;
int invalidAttemptCount = 0;
int remainingTime = 0;
bool showErrorMessage = true;
final _lockscreenSetting = LockscreenSetting.instance;
late final AnimationController _controller = AnimationController(
duration: const Duration(milliseconds: 500),
vsync: this,
);
late final animation = CurvedAnimation(
parent: _controller,
curve: Curves.easeInOut,
);
@override
void initState() {
_logger.info("initiatingState");
super.initState();
invalidAttemptCount = _lockscreenSetting.getInvalidAttemptCount();
WidgetsBinding.instance.addObserver(this);
WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
if (isNonMobileIOSDevice()) {
_logger.info('ignore init for non mobile iOS device');
return;
}
_showLockScreen(source: "postFrameInit");
});
}
@override
Widget build(BuildContext context) {
final colorTheme = getEnteColorScheme(context);
final textTheme = getEnteTextTheme(context);
return Scaffold(
body: Container(
decoration: const BoxDecoration(
image: DecorationImage(
image: ExactAssetImage(
'assets/loading_photos_background_fullscreen.png',
),
fit: BoxFit.cover,
),
),
child: Center(
child: Column(
children: [
const Spacer(),
SizedBox(
height: 120,
width: 120,
child: Stack(
alignment: Alignment.center,
children: [
Container(
width: 82,
height: 82,
decoration: BoxDecoration(
shape: BoxShape.circle,
gradient: LinearGradient(
colors: [
Colors.grey.shade500.withOpacity(0.2),
Colors.grey.shade50.withOpacity(0.1),
Colors.grey.shade400.withOpacity(0.2),
Colors.grey.shade300.withOpacity(0.4),
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
),
),
child: Padding(
padding: const EdgeInsets.all(1.0),
child: Container(
decoration: BoxDecoration(
shape: BoxShape.circle,
color: colorTheme.backgroundBase,
),
),
),
),
SizedBox(
height: 75,
width: 75,
child: TweenAnimationBuilder<double>(
tween: Tween<double>(
begin: 0,
end: calculateRemainingTime(),
),
curve: Curves.ease,
duration: const Duration(milliseconds: 50),
builder: (context, value, _) =>
CircularProgressIndicator(
backgroundColor: colorTheme.fillFaintPressed,
value: value,
color: colorTheme.primary400,
strokeWidth: 1.5,
),
),
),
IconButtonWidget(
size: 30,
icon: Icons.lock,
iconButtonType: IconButtonType.primary,
iconColor: colorTheme.tabIcon,
),
],
),
),
const Spacer(),
isTimerRunning
? Stack(
alignment: Alignment.center,
children: [
Text(
"Too many incorrect attempts",
style: textTheme.body,
)
.animate(delay: const Duration(milliseconds: 2000))
.fadeOut(duration: 400.ms),
Text(
formatTime(remainingTime),
style: textTheme.body,
)
.animate(delay: const Duration(milliseconds: 2250))
.fadeIn(duration: 400.ms),
],
)
: GestureDetector(
onTap: () => _showLockScreen(source: "tap"),
child: Text(
"Tap to unlock",
style: textTheme.body,
),
),
const Padding(
padding: EdgeInsets.only(bottom: 20),
),
],
),
),
),
);
}
bool isNonMobileIOSDevice() {
if (Platform.isAndroid) {
return false;
}
final shortestSide = MediaQuery.sizeOf(context).shortestSide;
return shortestSide > 600 ? true : false;
}
Future<void> _autoLogoutOnMaxInvalidAttempts() async {
final AlertDialog alert = AlertDialog(
title: const Text("Too many incorrect attempts"),
content: Text(S.of(context).pleaseLoginAgain),
actions: [
TextButton(
child: Text(
S.of(context).ok,
style: TextStyle(
color: Theme.of(context).colorScheme.greenAlternative,
),
),
onPressed: () async {
Navigator.of(context, rootNavigator: true).pop('dialog');
Navigator.of(context).popUntil((route) => route.isFirst);
final dialog =
createProgressDialog(context, S.of(context).loggingOut);
await dialog.show();
await Configuration.instance.logout();
await dialog.hide();
},
),
],
);
await showDialog(
context: context,
builder: (BuildContext context) {
return alert;
},
);
}
@override
Future<void> didChangeAppLifecycleState(AppLifecycleState state) async {
_logger.info(state.toString());
if (state == AppLifecycleState.resumed && !_isShowingLockScreen) {
_hasPlacedAppInBackground = false;
final bool didAuthInLast5Seconds = lastAuthenticatingTime != null &&
DateTime.now().millisecondsSinceEpoch - lastAuthenticatingTime! <
5000;
if (!_hasAuthenticationFailed && !didAuthInLast5Seconds) {
if (_lockscreenSetting.getlastInvalidAttemptTime() >
DateTime.now().millisecondsSinceEpoch &&
!_isShowingLockScreen) {
final int time = (_lockscreenSetting.getlastInvalidAttemptTime() -
DateTime.now().millisecondsSinceEpoch) ~/
1000;
Future.delayed(
Duration.zero,
() {
startLockTimer(time);
_showLockScreen(source: "lifeCycle");
},
);
}
} else {
_hasAuthenticationFailed = false;
}
} else if (state == AppLifecycleState.paused ||
state == AppLifecycleState.inactive) {
if (!_isShowingLockScreen) {
_hasPlacedAppInBackground = true;
_hasAuthenticationFailed = false;
}
}
}
@override
void dispose() {
_logger.info('disposing');
WidgetsBinding.instance.removeObserver(this);
super.dispose();
}
Future<void> startLockTimer(int time) async {
if (isTimerRunning) {
return;
}
setState(() {
isTimerRunning = true;
remainingTime = time;
});
while (remainingTime > 0) {
await Future.delayed(const Duration(seconds: 1));
setState(() {
remainingTime--;
});
}
setState(() {
isTimerRunning = false;
});
}
double calculateRemainingTime() {
final int totalLockedTime =
lockedTime = pow(2, invalidAttemptCount - 5).toInt() * 30;
if (remainingTime == 0) return 1;
return 1 - remainingTime / totalLockedTime;
}
String formatTime(int seconds) {
final int hours = seconds ~/ 3600;
final int minutes = (seconds % 3600) ~/ 60;
final int remainingSeconds = seconds % 60;
if (hours > 0) {
return "${hours}h ${minutes}m";
} else if (minutes > 0) {
return "${minutes}m ${remainingSeconds}s";
} else {
return "${remainingSeconds}s";
}
}
Future<void> _showLockScreen({String source = ''}) async {
final int id = DateTime.now().millisecondsSinceEpoch;
_logger.info("Showing lock screen $source $id");
try {
if (id < _lockscreenSetting.getlastInvalidAttemptTime() &&
!_isShowingLockScreen) {
final int time =
(_lockscreenSetting.getlastInvalidAttemptTime() - id) ~/ 1000;
await startLockTimer(time);
}
_isShowingLockScreen = true;
final result = isTimerRunning
? false
: await requestAuthentication(
context,
context.l10n.authToViewYourMemories,
isOpeningApp: true,
);
_logger.finest("LockScreen Result $result $id");
_isShowingLockScreen = false;
if (result) {
lastAuthenticatingTime = DateTime.now().millisecondsSinceEpoch;
AppLock.of(context)!.didUnlock();
await _lockscreenSetting.setInvalidAttemptCount(0);
setState(() {
lockedTime = 15;
isTimerRunning = false;
});
} else {
if (!_hasPlacedAppInBackground) {
if (_lockscreenSetting.getInvalidAttemptCount() > 4 &&
invalidAttemptCount !=
_lockscreenSetting.getInvalidAttemptCount()) {
invalidAttemptCount = _lockscreenSetting.getInvalidAttemptCount();
if (invalidAttemptCount > 9) {
await _autoLogoutOnMaxInvalidAttempts();
return;
}
lockedTime = pow(2, invalidAttemptCount - 5).toInt() * 30;
await _lockscreenSetting.setLastInvalidAttemptTime(
DateTime.now().millisecondsSinceEpoch + lockedTime * 1000,
);
await startLockTimer(lockedTime);
}
_hasAuthenticationFailed = true;
_logger.info("Authentication failed");
}
}
} catch (e, s) {
_isShowingLockScreen = false;
_logger.severe(e, s);
}
}
}