480 lines
14 KiB
Dart
480 lines
14 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_otp_text_field/flutter_otp_text_field.dart';
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import 'package:gap/gap.dart';
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import 'package:hooks_riverpod/hooks_riverpod.dart';
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import 'package:island/widgets/alert.dart';
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import 'package:material_symbols_icons/symbols.dart';
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import 'package:easy_localization/easy_localization.dart';
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import 'package:island/models/wallet.dart';
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import 'package:island/widgets/content/sheet.dart';
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import 'package:island/pods/network.dart';
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import 'package:dio/dio.dart';
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import 'package:local_auth/local_auth.dart';
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import 'package:flutter_secure_storage/flutter_secure_storage.dart';
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import 'package:flutter/services.dart';
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import 'package:styled_widget/styled_widget.dart';
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class PaymentOverlay extends HookConsumerWidget {
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final SnWalletOrder order;
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final Function(SnWalletOrder completedOrder)? onPaymentSuccess;
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final Function(String error)? onPaymentError;
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final VoidCallback? onCancel;
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final bool enableBiometric;
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const PaymentOverlay({
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super.key,
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required this.order,
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this.onPaymentSuccess,
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this.onPaymentError,
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this.onCancel,
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this.enableBiometric = true,
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});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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return Container(
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.surface,
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borderRadius: const BorderRadius.vertical(top: Radius.circular(16)),
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),
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child: Padding(
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padding: EdgeInsets.only(
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bottom: MediaQuery.of(context).viewInsets.bottom,
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),
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child: SheetScaffold(
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titleText: 'Solarpay',
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heightFactor: 0.7,
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child: _PaymentContent(
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order: order,
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onPaymentSuccess: onPaymentSuccess,
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onPaymentError: onPaymentError,
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onCancel: onCancel,
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enableBiometric: enableBiometric,
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),
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),
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),
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);
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}
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static Future<SnWalletOrder?> show({
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required BuildContext context,
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required SnWalletOrder order,
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bool enableBiometric = true,
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}) {
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return showModalBottomSheet<SnWalletOrder>(
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context: context,
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isScrollControlled: true,
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backgroundColor: Colors.transparent,
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useSafeArea: true,
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builder:
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(context) => PaymentOverlay(
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order: order,
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enableBiometric: enableBiometric,
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onPaymentSuccess: (completedOrder) {
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Navigator.of(context).pop(completedOrder);
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},
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onPaymentError: (err) {
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Navigator.of(context).pop();
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showErrorAlert(err);
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},
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onCancel: () {
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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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class _PaymentContent extends ConsumerStatefulWidget {
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final SnWalletOrder order;
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final Function(SnWalletOrder)? onPaymentSuccess;
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final Function(String)? onPaymentError;
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final VoidCallback? onCancel;
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final bool enableBiometric;
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const _PaymentContent({
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required this.order,
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this.onPaymentSuccess,
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this.onPaymentError,
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this.onCancel,
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this.enableBiometric = true,
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});
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@override
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ConsumerState<_PaymentContent> createState() => _PaymentContentState();
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}
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class _PaymentContentState extends ConsumerState<_PaymentContent> {
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static const String _pinStorageKey = 'app_pin_code';
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static final _secureStorage = FlutterSecureStorage();
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final LocalAuthentication _localAuth = LocalAuthentication();
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String _pin = '';
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bool _isPinMode = true;
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bool _hasBiometricSupport = false;
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bool _hasStoredPin = false;
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@override
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void initState() {
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super.initState();
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_initializeBiometric();
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}
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@override
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void dispose() {
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super.dispose();
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}
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Future<void> _initializeBiometric() async {
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try {
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// Check if biometric is available
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final isAvailable = await _localAuth.isDeviceSupported();
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final canCheckBiometrics = await _localAuth.canCheckBiometrics;
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_hasBiometricSupport = isAvailable && canCheckBiometrics;
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// Check if PIN is stored
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final storedPin = await _secureStorage.read(key: _pinStorageKey);
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_hasStoredPin = storedPin != null && storedPin.isNotEmpty;
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// Set initial mode based on stored PIN and biometric support
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if (_hasStoredPin && _hasBiometricSupport && widget.enableBiometric) {
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_isPinMode = false;
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// Automatically trigger biometric authentication
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WidgetsBinding.instance.addPostFrameCallback((_) {
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_authenticateWithBiometric();
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});
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} else {
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_isPinMode = true;
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}
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if (mounted) {
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setState(() {});
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}
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} catch (e) {
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// Fallback to PIN mode if biometric setup fails
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_isPinMode = true;
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if (mounted) {
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setState(() {});
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}
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}
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}
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void _onPinSubmit(String pin) {
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_pin = pin;
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if (pin.length == 6) {
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_processPaymentWithPin(pin);
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}
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}
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Future<void> _processPaymentWithPin(String pin) async {
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showLoadingModal(context);
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try {
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// Store PIN securely for future biometric authentication
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if (_hasBiometricSupport && widget.enableBiometric && !_hasStoredPin) {
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await _secureStorage.write(key: _pinStorageKey, value: pin);
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_hasStoredPin = true;
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}
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await _makePaymentRequest(pin);
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} catch (err) {
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widget.onPaymentError?.call(err.toString());
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_pin = '';
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} finally {
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if (mounted) {
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hideLoadingModal(context);
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}
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}
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}
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Future<void> _authenticateWithBiometric() async {
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showLoadingModal(context);
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try {
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// Perform biometric authentication
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final bool didAuthenticate = await _localAuth.authenticate(
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localizedReason: 'biometricPrompt'.tr(),
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options: const AuthenticationOptions(
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biometricOnly: true,
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stickyAuth: true,
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),
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);
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if (didAuthenticate) {
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// Retrieve stored PIN and process payment
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final storedPin = await _secureStorage.read(key: _pinStorageKey);
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if (storedPin != null && storedPin.isNotEmpty) {
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await _makePaymentRequest(storedPin);
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} else {
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// Fallback to PIN mode if no stored PIN
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_fallbackToPinMode('noStoredPin'.tr());
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}
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} else {
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// Biometric authentication failed, fallback to PIN mode
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_fallbackToPinMode('biometricAuthFailed'.tr());
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}
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} catch (err) {
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// Handle biometric authentication errors
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String errorMessage = 'biometricAuthFailed'.tr();
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if (err is PlatformException) {
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switch (err.code) {
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case 'NotAvailable':
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errorMessage = 'biometricNotAvailable'.tr();
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break;
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case 'NotEnrolled':
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errorMessage = 'biometricNotEnrolled'.tr();
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break;
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case 'LockedOut':
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case 'PermanentlyLockedOut':
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errorMessage = 'biometricLockedOut'.tr();
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break;
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default:
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errorMessage = 'biometricAuthFailed'.tr();
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}
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}
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_fallbackToPinMode(errorMessage);
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} finally {
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if (mounted) {
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hideLoadingModal(context);
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}
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}
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}
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/// Unified method for making payment requests with PIN
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Future<void> _makePaymentRequest(String pin) async {
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try {
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final client = ref.read(apiClientProvider);
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final response = await client.post(
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'/orders/${widget.order.id}/pay',
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data: {'pin_code': pin},
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);
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final completedOrder = SnWalletOrder.fromJson(response.data);
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widget.onPaymentSuccess?.call(completedOrder);
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} catch (err) {
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String errorMessage = 'paymentFailed'.tr();
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if (err is DioException) {
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if (err.response?.statusCode == 403 ||
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err.response?.statusCode == 401) {
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// PIN is invalid
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errorMessage = 'invalidPin'.tr();
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// If this was a biometric attempt with stored PIN, remove the stored PIN
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if (!_isPinMode) {
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await _secureStorage.delete(key: _pinStorageKey);
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_hasStoredPin = false;
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_fallbackToPinMode(errorMessage);
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return;
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}
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} else if (err.response?.statusCode == 400) {
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errorMessage = err.response?.data?['error'] ?? errorMessage;
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}
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}
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throw errorMessage;
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}
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}
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void _fallbackToPinMode(String? message) {
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setState(() {
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_isPinMode = true;
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});
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if (message != null && message.isNotEmpty) {
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showSnackBar(context, message);
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}
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}
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String _formatCurrency(int amount, String currency) {
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final value = amount / 100.0;
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return '${value.toStringAsFixed(2)} $currency';
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}
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@override
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Widget build(BuildContext context) {
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return Padding(
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padding: const EdgeInsets.all(20),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// Order Summary
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_buildOrderSummary(),
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const Gap(32),
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// Authentication Content
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Expanded(
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child: _isPinMode ? _buildPinInput() : _buildBiometricAuth(),
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),
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// Action Buttons
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const Gap(24),
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_buildActionButtons(),
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],
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),
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);
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}
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Widget _buildOrderSummary() {
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return Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.surfaceContainerHighest,
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borderRadius: BorderRadius.circular(12),
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Icon(
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Symbols.receipt,
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color: Theme.of(context).colorScheme.primary,
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),
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const Gap(8),
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Text(
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'paymentSummary'.tr(),
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style: Theme.of(
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context,
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).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w600),
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),
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],
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),
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const Gap(12),
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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'amount'.tr(),
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style: Theme.of(context).textTheme.bodyMedium,
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),
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Text(
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_formatCurrency(widget.order.amount, widget.order.currency),
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style: Theme.of(
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context,
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).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w600),
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),
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],
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),
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if (widget.order.remarks != null) ...[
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const Gap(8),
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Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'description'.tr(),
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style: Theme.of(
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context,
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).textTheme.bodyMedium?.copyWith(fontWeight: FontWeight.w600),
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),
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const Spacer(),
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Expanded(
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flex: 2,
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child: Text(
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widget.order.remarks!,
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style: Theme.of(context).textTheme.bodyMedium,
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textAlign: TextAlign.end,
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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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Widget _buildPinInput() {
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return Column(
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children: [
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Text(
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'enterPinToConfirm'.tr(),
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style: Theme.of(
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context,
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).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w500),
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textAlign: TextAlign.center,
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),
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const Gap(24),
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OtpTextField(
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numberOfFields: 6,
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borderColor: Theme.of(context).colorScheme.outline,
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focusedBorderColor: Theme.of(context).colorScheme.primary,
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showFieldAsBox: true,
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obscureText: true,
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keyboardType: TextInputType.number,
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fieldWidth: 48,
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fieldHeight: 56,
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borderRadius: BorderRadius.circular(8),
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borderWidth: 1,
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textStyle: Theme.of(
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context,
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).textTheme.headlineSmall?.copyWith(fontWeight: FontWeight.w600),
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onSubmit: _onPinSubmit,
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onCodeChanged: (String code) {
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_pin = code;
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setState(() {});
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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 _buildBiometricAuth() {
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return Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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Icon(Symbols.fingerprint, size: 48),
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const Gap(16),
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Text(
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'useBiometricToConfirm'.tr(),
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style: Theme.of(
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context,
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).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w500),
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textAlign: TextAlign.center,
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),
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Text(
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'The biometric data will only be processed on your device',
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style: Theme.of(context).textTheme.bodyMedium?.copyWith(
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color: Theme.of(context).colorScheme.onSurfaceVariant,
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fontSize: 11,
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),
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textAlign: TextAlign.center,
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).opacity(0.75),
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const Gap(28),
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ElevatedButton.icon(
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onPressed: _authenticateWithBiometric,
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icon: const Icon(Symbols.fingerprint),
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label: Text('authenticateNow'.tr()),
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style: ElevatedButton.styleFrom(
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padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
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),
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),
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TextButton(
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onPressed: () => _fallbackToPinMode(null),
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child: Text('usePinInstead'.tr()),
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),
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],
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).center();
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}
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Widget _buildActionButtons() {
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return Row(
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children: [
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Expanded(
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child: OutlinedButton(
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onPressed: widget.onCancel,
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child: Text('cancel'.tr()),
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),
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),
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if (_isPinMode && _pin.length == 6) ...[
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const Gap(12),
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Expanded(
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child: ElevatedButton(
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onPressed: () => _processPaymentWithPin(_pin),
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child: Text('confirm'.tr()),
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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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