Language Changes
This commit is contained in:
Nilanjan Chakrabarti
249
lib/features/auth/screens/mpin_screen.dart
Normal file
249
lib/features/auth/screens/mpin_screen.dart
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import 'dart:developer';
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import 'package:flutter/material.dart';
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import 'package:kmobile/app.dart';
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import 'package:kmobile/di/injection.dart';
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import 'package:kmobile/security/secure_storage.dart';
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import 'package:local_auth/local_auth.dart';
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enum MPinMode { enter, set, confirm }
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class MPinScreen extends StatefulWidget {
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final MPinMode mode;
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final String? initialPin;
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final void Function(String pin)? onCompleted;
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const MPinScreen({
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super.key,
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required this.mode,
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this.initialPin,
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this.onCompleted,
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});
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@override
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State<MPinScreen> createState() => _MPinScreenState();
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}
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class _MPinScreenState extends State<MPinScreen> {
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List<String> mPin = [];
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String? errorText;
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@override
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void initState() {
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super.initState();
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if (widget.mode == MPinMode.enter) {
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_tryBiometricBeforePin();
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}
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}
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Future<void> _tryBiometricBeforePin() async {
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final storage = getIt<SecureStorage>();
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final enabled = await storage.read('biometric_enabled');
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log('biometric_enabled: $enabled');
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if (enabled != null && enabled) {
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final auth = LocalAuthentication();
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if (await auth.canCheckBiometrics) {
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final didAuth = await auth.authenticate(
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localizedReason: 'Authenticate to access kMobile',
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options: const AuthenticationOptions(biometricOnly: true),
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);
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if (didAuth && mounted) {
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// success → directly “complete” your flow
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widget.onCompleted?.call('');
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// or navigate yourself:
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// Navigator.of(context).pushReplacement(
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// MaterialPageRoute(builder: (_) => const NavigationScaffold()));
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}
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}
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}
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}
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void addDigit(String digit) {
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if (mPin.length < 4) {
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setState(() {
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mPin.add(digit);
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errorText = null;
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});
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if (mPin.length == 4) {
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_handleComplete();
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}
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}
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}
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void deleteDigit() {
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if (mPin.isNotEmpty) {
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setState(() {
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mPin.removeLast();
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errorText = null;
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});
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}
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}
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Future<void> _handleComplete() async {
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final pin = mPin.join();
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final storage = SecureStorage();
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switch (widget.mode) {
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case MPinMode.enter:
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final storedPin = await storage.read('mpin');
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log('storedPin: $storedPin');
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if (storedPin == int.tryParse(pin)) {
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widget.onCompleted?.call(pin);
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} else {
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setState(() {
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errorText = "Incorrect mPIN. Try again.";
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mPin.clear();
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});
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}
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break;
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case MPinMode.set:
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// propagate parent onCompleted into confirm step
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (_) => MPinScreen(
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mode: MPinMode.confirm,
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initialPin: pin,
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onCompleted: widget.onCompleted, // <-- use parent callback
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),
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),
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);
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break;
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case MPinMode.confirm:
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if (widget.initialPin == pin) {
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// 1) persist the pin
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await storage.write('mpin', pin);
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// 3) now clear the entire navigation stack and go to your main scaffold
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if (mounted) {
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Navigator.of(context, rootNavigator: true).pushAndRemoveUntil(
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MaterialPageRoute(builder: (_) => const NavigationScaffold()),
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(route) => false,
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);
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}
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} else {
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setState(() {
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errorText = "Pins do not match. Try again.";
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mPin.clear();
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});
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}
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break;
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}
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}
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Widget buildMPinDots() {
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return Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: List.generate(4, (index) {
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return Container(
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margin: const EdgeInsets.all(8),
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width: 15,
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height: 15,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: index < mPin.length ? Colors.black : Colors.grey[400],
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),
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);
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}),
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);
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}
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Widget buildNumberPad() {
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List<List<String>> keys = [
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['1', '2', '3'],
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['4', '5', '6'],
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['7', '8', '9'],
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['Enter', '0', '<']
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];
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return Column(
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children: keys.map((row) {
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return Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: row.map((key) {
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return Padding(
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padding: const EdgeInsets.all(8.0),
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child: GestureDetector(
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onTap: () {
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if (key == '<') {
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deleteDigit();
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} else if (key == 'Enter') {
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if (mPin.length == 4) {
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_handleComplete();
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} else {
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setState(() {
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errorText = "Please enter 4 digits";
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});
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}
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} else if (key.isNotEmpty) {
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addDigit(key);
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}
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},
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child: Container(
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width: 70,
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height: 70,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: Colors.grey[200],
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),
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alignment: Alignment.center,
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child: key == 'Enter'
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? const Icon(Icons.check)
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: Text(
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key == '<' ? '⌫' : key,
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style: TextStyle(
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fontSize: 20,
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color: key == 'Enter' ? Colors.blue : Colors.black,
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),
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),
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),
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),
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);
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}).toList(),
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);
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}).toList(),
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);
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}
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String getTitle() {
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switch (widget.mode) {
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case MPinMode.enter:
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return "Enter your mPIN";
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case MPinMode.set:
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return "Set your new mPIN";
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case MPinMode.confirm:
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return "Confirm your mPIN";
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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: SafeArea(
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child: Column(
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children: [
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const Spacer(),
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// Logo
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Image.asset('assets/images/logo.png', height: 100),
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const SizedBox(height: 20),
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Text(
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getTitle(),
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style: const TextStyle(fontSize: 20, fontWeight: FontWeight.w500),
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),
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const SizedBox(height: 20),
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buildMPinDots(),
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if (errorText != null)
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Padding(
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padding: const EdgeInsets.only(top: 8.0),
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child:
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Text(errorText!, style: const TextStyle(color: Colors.red)),
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),
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const Spacer(),
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buildNumberPad(),
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const Spacer(),
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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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