@samitouri / QOSAMI-cakewallet
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1 import 'package:another_flushbar/flushbar.dart';
2 import 'package:cake_wallet/new-ui/widgets/modern_button.dart';
3 import 'package:cake_wallet/utils/show_bar.dart';
4 import 'package:mobx/mobx.dart';
5 import 'package:flutter/material.dart';
6 import 'package:flutter/cupertino.dart';
7 import 'package:cake_wallet/generated/i18n.dart';
8 import 'package:cake_wallet/view_model/auth_state.dart';
9 import 'package:cake_wallet/view_model/auth_view_model.dart';
10 import 'package:cake_wallet/src/screens/pin_code/pin_code.dart';
11 import 'package:cake_wallet/src/screens/pin_code/pin_code_widget.dart';
12 import 'package:cake_wallet/core/execution_state.dart';
13
14 typedef OnAuthenticationFinished = void Function(bool, AuthPageState);
15
16 abstract class AuthPageState<T extends StatefulWidget> extends State<T> {
17 void changeProcessText(String text);
18 void hideProgressText();
19 Future<void> close({String? route, dynamic arguments});
20 }
21
22 class AuthPage extends StatefulWidget {
23 AuthPage(this.authViewModel, {required this.onAuthenticationFinished, this.closable = true});
24
25 final AuthViewModel authViewModel;
26 final OnAuthenticationFinished onAuthenticationFinished;
27 final bool closable;
28
29 @override
30 AuthPageState createState() => AuthPagePinCodeStateImpl();
31 }
32
33 class AuthPagePinCodeStateImpl extends AuthPageState<AuthPage> {
34 final _key = GlobalKey<ScaffoldState>();
35 final _pinCodeKey = GlobalKey<PinCodeState>();
36 ReactionDisposer? _reaction;
37 Flushbar<void>? _authBar;
38 Flushbar<void>? _progressBar;
39
40 @override
41 void initState() {
42 _reaction ??= reaction((_) => widget.authViewModel.state, (ExecutionState state) {
43 if (state is ExecutedSuccessfullyState) {
44 WidgetsBinding.instance.addPostFrameCallback((_) {
45 widget.onAuthenticationFinished(true, this);
46 });
47 setState(() {});
48 }
49
50 if (state is IsExecutingState) {
51 WidgetsBinding.instance.addPostFrameCallback(
52 (_) {
53 // null duration to make it indefinite until its disposed
54 _authBar = createBar<void>(S.of(context).authentication, context, duration: null)
55 ..show(context);
56 },
57 );
58 }
59
60 if (state is FailureState) {
61 WidgetsBinding.instance.addPostFrameCallback((_) async {
62 _pinCodeKey.currentState?.clear();
63 dismissFlushBar(_authBar);
64 if (context.mounted) {
65 showBar<void>(context, S.of(context).failed_authentication(state.error));
66 }
67 widget.onAuthenticationFinished(false, this);
68 });
69 }
70
71 if (state is AuthenticationBanned) {
72 WidgetsBinding.instance.addPostFrameCallback((_) async {
73 _pinCodeKey.currentState?.clear();
74 dismissFlushBar(_authBar);
75 showBar<void>(context, S.of(context).failed_authentication(state.error));
76 widget.onAuthenticationFinished(false, this);
77 });
78 }
79 });
80
81 if (widget.authViewModel.isBiometricalAuthenticationAllowed) {
82 WidgetsBinding.instance.addPostFrameCallback((_) async {
83 await Future<void>.delayed(Duration(milliseconds: 100));
84 await widget.authViewModel.biometricAuth();
85 });
86 }
87
88 super.initState();
89 }
90
91 @override
92 void dispose() {
93 _reaction?.reaction.dispose();
94 super.dispose();
95 }
96
97 @override
98 void changeProcessText(String text) {
99 dismissFlushBar(_authBar);
100 _progressBar = createBar<void>(text, context, duration: null)..show(_key.currentContext!);
101 }
102
103 @override
104 void hideProgressText() {
105 dismissFlushBar(_progressBar);
106 _progressBar = null;
107 }
108
109 @override
110 Future<void> close({String? route, dynamic arguments}) async {
111 if (_key.currentContext == null) {
112 // throw Exception('Key context is null. Should be not happened');
113 // flutter can happen, so safe to just return
114 return;
115 }
116
117 /// not the best scenario, but WidgetsBinding is not behaving correctly on Android
118 await Future<void>.delayed(Duration(milliseconds: 50));
119 await _authBar?.dismiss();
120 await Future<void>.delayed(Duration(milliseconds: 50));
121 await _progressBar?.dismiss();
122 await Future<void>.delayed(Duration(milliseconds: 50));
123 if (route != null) {
124 Navigator.of(_key.currentContext!).pushReplacementNamed(route, arguments: arguments);
125 } else {
126 Navigator.of(_key.currentContext!).pop();
127 }
128 }
129
130 @override
131 Widget build(BuildContext context) {
132 return Container(
133 color: Theme.of(context).colorScheme.surface,
134 child: Padding(
135 padding: const EdgeInsets.only(top: 16.0),
136 child: Scaffold(
137 key: _key,
138 appBar: CupertinoNavigationBar(
139 leading: widget.closable
140 ? ModernButton(
141 size: 36,
142 icon: Icon(Icons.close),
143 onPressed: Navigator.of(context).pop,
144 semanticLabel: S.of(context).close,
145 iconColor: Theme.of(context).colorScheme.onSurfaceVariant)
146 : Container(),
147 backgroundColor: Theme.of(context).colorScheme.surface,
148 border: null),
149 resizeToAvoidBottomInset: false,
150 body: PinCode((pin, _) => widget.authViewModel.auth(password: pin), (_) => null,
151 widget.authViewModel.pinLength, false, _pinCodeKey)),
152 ),
153 );
154 }
155
156 void dismissFlushBar(Flushbar<dynamic>? bar) {
157 WidgetsBinding.instance.addPostFrameCallback((_) async {
158 await bar?.dismiss();
159 });
160 }
161 }