stack_wallet/lib/pages/pinpad_views/create_pin_view.dart

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2022-08-26 08:11:35 +00:00
import 'dart:io';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:stackwallet/notifications/show_flush_bar.dart';
import 'package:stackwallet/pages/home_view/home_view.dart';
import 'package:stackwallet/providers/global/prefs_provider.dart';
import 'package:stackwallet/utilities/assets.dart';
import 'package:stackwallet/utilities/biometrics.dart';
import 'package:stackwallet/utilities/cfcolors.dart';
import 'package:stackwallet/utilities/constants.dart';
import 'package:stackwallet/utilities/enums/flush_bar_type.dart';
import 'package:stackwallet/utilities/flutter_secure_storage_interface.dart';
import 'package:stackwallet/utilities/text_styles.dart';
import 'package:stackwallet/widgets/custom_buttons/app_bar_icon_button.dart';
import 'package:stackwallet/widgets/custom_pin_put/custom_pin_put.dart';
class CreatePinView extends ConsumerStatefulWidget {
const CreatePinView({
Key? key,
this.popOnSuccess = false,
this.secureStore = const SecureStorageWrapper(
FlutterSecureStorage(),
),
this.biometrics = const Biometrics(),
}) : super(key: key);
static const String routeName = "/createPin";
final FlutterSecureStorageInterface secureStore;
final Biometrics biometrics;
final bool popOnSuccess;
@override
ConsumerState<CreatePinView> createState() => _CreatePinViewState();
}
class _CreatePinViewState extends ConsumerState<CreatePinView> {
BoxDecoration get _pinPutDecoration {
return BoxDecoration(
color: CFColors.gray3,
border: Border.all(width: 1, color: CFColors.gray3),
borderRadius: BorderRadius.circular(6),
);
}
final PageController _pageController =
PageController(initialPage: 0, keepPage: true);
// Attributes for Page 1 of the pageview
final TextEditingController _pinPutController1 = TextEditingController();
final FocusNode _pinPutFocusNode1 = FocusNode();
// Attributes for Page 2 of the pageview
final TextEditingController _pinPutController2 = TextEditingController();
final FocusNode _pinPutFocusNode2 = FocusNode();
late FlutterSecureStorageInterface _secureStore;
late Biometrics biometrics;
@override
initState() {
_secureStore = widget.secureStore;
biometrics = widget.biometrics;
super.initState();
}
@override
void dispose() {
_pageController.dispose();
_pinPutController1.dispose();
_pinPutController2.dispose();
_pinPutFocusNode1.dispose();
_pinPutFocusNode2.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: CFColors.almostWhite,
appBar: AppBar(
leading: AppBarBackButton(
onPressed: () async {
if (FocusScope.of(context).hasFocus) {
FocusScope.of(context).unfocus();
await Future<void>.delayed(const Duration(milliseconds: 70));
}
if (mounted) {
Navigator.of(context).pop(widget.popOnSuccess);
}
},
),
),
body: SafeArea(
child: PageView(
controller: _pageController,
physics: const NeverScrollableScrollPhysics(),
children: [
// page 1
Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"Create a PIN",
style: STextStyles.pageTitleH1,
),
const SizedBox(
height: 8,
),
Text(
"This PIN protects access to your wallet.",
style: STextStyles.subtitle,
),
const SizedBox(
height: 36,
),
CustomPinPut(
fieldsCount: Constants.pinLength,
eachFieldHeight: 12,
eachFieldWidth: 12,
textStyle: STextStyles.label.copyWith(
fontSize: 1,
),
focusNode: _pinPutFocusNode1,
controller: _pinPutController1,
useNativeKeyboard: false,
obscureText: "",
inputDecoration: const InputDecoration(
border: InputBorder.none,
enabledBorder: InputBorder.none,
focusedBorder: InputBorder.none,
disabledBorder: InputBorder.none,
errorBorder: InputBorder.none,
focusedErrorBorder: InputBorder.none,
fillColor: CFColors.almostWhite,
counterText: "",
),
submittedFieldDecoration: _pinPutDecoration.copyWith(
color: CFColors.link2,
border: Border.all(
width: 1,
color: CFColors.link2,
),
),
selectedFieldDecoration: _pinPutDecoration,
followingFieldDecoration: _pinPutDecoration,
onSubmit: (String pin) {
if (pin.length == Constants.pinLength) {
_pageController.nextPage(
duration: const Duration(milliseconds: 300),
curve: Curves.linear,
);
}
},
),
],
),
// page 2
Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"Confirm PIN",
style: STextStyles.pageTitleH1,
),
const SizedBox(
height: 8,
),
Text(
"This PIN protects access to your wallet.",
style: STextStyles.subtitle,
),
const SizedBox(
height: 36,
),
CustomPinPut(
fieldsCount: Constants.pinLength,
eachFieldHeight: 12,
eachFieldWidth: 12,
textStyle: GoogleFonts.workSans(
fontSize: 1,
),
focusNode: _pinPutFocusNode2,
controller: _pinPutController2,
useNativeKeyboard: false,
obscureText: "",
inputDecoration: const InputDecoration(
border: InputBorder.none,
enabledBorder: InputBorder.none,
focusedBorder: InputBorder.none,
disabledBorder: InputBorder.none,
errorBorder: InputBorder.none,
focusedErrorBorder: InputBorder.none,
fillColor: CFColors.almostWhite,
counterText: "",
),
submittedFieldDecoration: _pinPutDecoration.copyWith(
color: CFColors.link2,
border: Border.all(
width: 1,
color: CFColors.link2,
),
),
selectedFieldDecoration: _pinPutDecoration,
followingFieldDecoration: _pinPutDecoration,
onSubmit: (String pin) async {
// _onSubmitCount++;
// if (_onSubmitCount - _onSubmitFailCount > 1) return;
if (_pinPutController1.text == _pinPutController2.text) {
// ask if want to use biometrics
final bool useBiometrics = (Platform.isLinux)
? false
: await biometrics.authenticate(
cancelButtonText: "SKIP",
localizedReason:
"You can use your fingerprint to unlock the wallet and confirm transactions.",
title: "Enable fingerprint authentication",
);
//TODO investigate why this crashes IOS, maybe ios persists securestorage even after an uninstall?
// This should never fail as we are writing a new pin
// assert(
// (await _secureStore.read(key: "stack_pin")) == null);
// possible alternative to the above but it does not guarantee we aren't overwriting a pin
// if (!Platform.isLinux)
// assert((await _secureStore.read(key: "stack_pin")) ==
// null);
assert(ref.read(prefsChangeNotifierProvider).hasPin ==
false);
await _secureStore.write(key: "stack_pin", value: pin);
ref.read(prefsChangeNotifierProvider).useBiometrics =
useBiometrics;
ref.read(prefsChangeNotifierProvider).hasPin = true;
await Future<void>.delayed(
const Duration(milliseconds: 200));
if (mounted) {
if (!widget.popOnSuccess) {
Navigator.of(context).pushNamedAndRemoveUntil(
HomeView.routeName,
(route) => false,
);
} else {
Navigator.of(context).pop();
}
}
} else {
// _onSubmitFailCount++;
_pageController.animateTo(
0,
duration: const Duration(milliseconds: 300),
curve: Curves.linear,
);
showFloatingFlushBar(
type: FlushBarType.warning,
message: "PIN codes do not match. Try again.",
context: context,
iconAsset: Assets.svg.alertCircle,
);
_pinPutController1.text = '';
_pinPutController2.text = '';
}
},
),
],
),
],
),
),
);
}
}