[CW-225] Add pin timeout setting

lib/core/auth_service.dart

@@ -4,6 +4,8 @@ import 'package:shared_preferences/shared_preferences.dart';
 import 'package:cake_wallet/entities/preferences_key.dart';
 import 'package:cake_wallet/entities/secret_store_key.dart';
 import 'package:cake_wallet/entities/encrypt.dart';
+import 'package:cake_wallet/di.dart';
+import 'package:cake_wallet/store/settings_store.dart';
 
 class AuthService with Store {
   AuthService({required this.secureStorage, required this.sharedPreferences});
@@ -39,4 +41,26 @@ class AuthService with Store {
 
     return decodedPin == pin;
   }
+
+  void saveLastAuthTime(){
+    int timestamp = DateTime.now().millisecondsSinceEpoch;
+    sharedPreferences.setInt(PreferencesKey.lastAuthTimeMilliseconds, timestamp);
+  }
+
+  bool requireAuth(){  
+      final timestamp = sharedPreferences.getInt(PreferencesKey.lastAuthTimeMilliseconds);
+      final duration =  _durationToRequireAuth(timestamp ?? 0);
+      final requiredPinInterval = getIt.get<SettingsStore>().pinTimeOutDuration;
+     
+      return duration >= requiredPinInterval.value;
+    }
+
+  int _durationToRequireAuth(int timestamp){
+
+      DateTime before = DateTime.fromMillisecondsSinceEpoch(timestamp);
+      DateTime now = DateTime.now();
+      Duration timeDifference = now.difference(before);
+
+      return timeDifference.inMinutes; 
+  }
 }

lib/di.dart

@@ -440,7 +440,8 @@ Future setup(
   getIt.registerFactory(() {
     final appStore = getIt.get<AppStore>();
     final yatStore = getIt.get<YatStore>();
-    return SettingsViewModel(appStore.settingsStore, yatStore, appStore.wallet!);
+    final authService = getIt.get<AuthService>();
+    return SettingsViewModel(appStore.settingsStore, yatStore, authService, appStore.wallet!);
   });
 
   getIt

lib/entities/pin_code_required_duration.dart

@@ -0,0 +1,32 @@
+import 'package:cake_wallet/generated/i18n.dart';
+
+enum PinCodeRequiredDuration { 
+  always(0), 
+  tenminutes(10), 
+  onehour(60);
+
+  const PinCodeRequiredDuration(this.value);
+  final int value;
+
+  static PinCodeRequiredDuration deserialize({required int raw}) => 
+      PinCodeRequiredDuration.values.firstWhere((e) => e.value == raw);
+
+  @override
+  String toString(){
+    String label = '';
+    switch (this) {
+      case PinCodeRequiredDuration.always:
+        label = S.current.always;
+        break;
+      case PinCodeRequiredDuration.tenminutes:
+        label = S.current.minutes_to_pin_code('10');
+        break;
+      case PinCodeRequiredDuration.onehour:
+        label = S.current.minutes_to_pin_code('60');
+        break;
+    }
+    return label;
+
+  }
+  
+}

lib/entities/preferences_key.dart

@@ -23,6 +23,9 @@ class PreferencesKey {
   static const shouldShowReceiveWarning = 'should_show_receive_warning';
   static const shouldShowYatPopup = 'should_show_yat_popup';
   static const moneroWalletPasswordUpdateV1Base = 'monero_wallet_update_v1';
+  static const pinTimeOutDuration = 'pin_timeout_duration';
+  static const lastAuthTimeMilliseconds = 'last_auth_time_milliseconds';
+
 
   static String moneroWalletUpdateV1Key(String name)
     => '${PreferencesKey.moneroWalletPasswordUpdateV1Base}_${name}';

lib/src/screens/settings/security_backup_page.dart

@@ -1,9 +1,11 @@
+import 'package:cake_wallet/entities/pin_code_required_duration.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/src/screens/auth/auth_page.dart';
 import 'package:cake_wallet/src/screens/base_page.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/src/screens/pin_code/pin_code_widget.dart';
 import 'package:cake_wallet/src/screens/settings/widgets/settings_cell_with_arrow.dart';
+import 'package:cake_wallet/src/screens/settings/widgets/settings_picker_cell.dart';
 import 'package:cake_wallet/src/screens/settings/widgets/settings_switcher_cell.dart';
 import 'package:cake_wallet/src/widgets/standard_list.dart';
 import 'package:cake_wallet/view_model/settings/settings_view_model.dart';
@@ -20,27 +22,28 @@ class SecurityBackupPage extends BasePage {
 
   @override
   Widget body(BuildContext context) {
+
     return Container(
       padding: EdgeInsets.only(top: 10),
       child: Column(mainAxisSize: MainAxisSize.min, children: [
         SettingsCellWithArrow(
           title: S.current.show_keys,
-          handler: (_) => Navigator.of(context).pushNamed(Routes.auth,
+          handler: (_) => settingsViewModel.checkPinCodeRiquired() ? Navigator.of(context).pushNamed(Routes.auth,
               arguments: (bool isAuthenticatedSuccessfully, AuthPageState auth) {
             if (isAuthenticatedSuccessfully) {
               auth.close(route: Routes.showKeys);
             }
-          }),
+          }) : Navigator.of(context).pushNamed(Routes.showKeys),
         ),
         StandardListSeparator(padding: EdgeInsets.symmetric(horizontal: 24)),
         SettingsCellWithArrow(
           title: S.current.create_backup,
-          handler: (_) => Navigator.of(context).pushNamed(Routes.auth,
+          handler: (_) => settingsViewModel.checkPinCodeRiquired() ? Navigator.of(context).pushNamed(Routes.auth,
               arguments: (bool isAuthenticatedSuccessfully, AuthPageState auth) {
             if (isAuthenticatedSuccessfully) {
               auth.close(route: Routes.backup);
             }
-          }),
+          }) : Navigator.of(context).pushNamed(Routes.backup),
         ),
         StandardListSeparator(padding: EdgeInsets.symmetric(horizontal: 24)),
         SettingsCellWithArrow(
@@ -56,7 +59,9 @@ class SecurityBackupPage extends BasePage {
                 })),
         StandardListSeparator(padding: EdgeInsets.symmetric(horizontal: 24)),
         Observer(builder: (_) {
-          return SettingsSwitcherCell(
+          return Column(
+            children: [
+              SettingsSwitcherCell(
                   title: S.current.settings_allow_biometrical_authentication,
                   value: settingsViewModel.allowBiometricalAuthentication,
                   onValueChange: (BuildContext context, bool value) {
@@ -76,8 +81,19 @@ class SecurityBackupPage extends BasePage {
                     } else {
                       settingsViewModel.setAllowBiometricalAuthentication(value);
                     }
-              });
                   }),
+                SettingsPickerCell<PinCodeRequiredDuration>(
+                title: S.current.require_pin_after,
+                items: PinCodeRequiredDuration.values,
+                selectedItem: settingsViewModel.pinCodeRequiredDuration,
+                onItemSelected: (PinCodeRequiredDuration code) {
+                  settingsViewModel.setPinCodeRequiredDuration(code);
+                },
+              ),
+            ],
+          );
+        }),
+
       ]),
     );
   }

lib/src/screens/wallet_list/wallet_list_page.dart

@@ -220,6 +220,7 @@ class WalletListBodyState extends State<WalletListBody> {
   }
 
   Future<void> _loadWallet(WalletListItem wallet) async {
+    if(await widget.walletListViewModel.checkIfAuthRequired()){
       await Navigator.of(context).pushNamed(Routes.auth, arguments:
         (bool isAuthenticatedSuccessfully, AuthPageState auth) async {
       if (!isAuthenticatedSuccessfully) {
@@ -241,17 +242,36 @@ class WalletListBodyState extends State<WalletListBody> {
             .wallet_list_failed_to_load(wallet.name, e.toString()));
       }
     });
+    }else{
+      try {
+        changeProcessText(S.of(context).wallet_list_loading_wallet(wallet.name));
+        await widget.walletListViewModel.loadWallet(wallet);
+        hideProgressText();
+        Navigator.of(context).pop(); 
+      } catch (e) {
+        changeProcessText(S
+            .of(context)
+            .wallet_list_failed_to_load(wallet.name, e.toString()));  
+      }
+    }
   }
 
   Future<void> _removeWallet(WalletListItem wallet) async {
+    if(widget.walletListViewModel.checkIfAuthRequired()){
      await Navigator.of(context).pushNamed(Routes.auth, arguments:
         (bool isAuthenticatedSuccessfully, AuthPageState auth) async {
       if (!isAuthenticatedSuccessfully) {
         return;
       }
+      _onSuccessfulAuth(wallet, auth);
+    });
+  }else{
+      _onSuccessfulAuth(wallet, null);
+    }
+  }
 
+  _onSuccessfulAuth(WalletListItem wallet, AuthPageState? auth)async{
     bool confirmed = false;
-
       await showPopUp<void>(
           context: context,
           builder: (BuildContext context) {
@@ -270,18 +290,23 @@ class WalletListBodyState extends State<WalletListBody> {
 
       if (confirmed) {
         try {
+        auth != null ? 
         auth.changeProcessText(
-              S.of(context).wallet_list_removing_wallet(wallet.name));
+          S.of(context).wallet_list_removing_wallet(wallet.name)) 
+          : changeProcessText( S.of(context).wallet_list_removing_wallet(wallet.name));
           await widget.walletListViewModel.remove(wallet);
         } catch (e) {
-          auth.changeProcessText(S
-              .of(context)
-              .wallet_list_failed_to_remove(wallet.name, e.toString()));
+          auth != null ? 
+          auth.changeProcessText(
+            S.of(context).wallet_list_failed_to_remove(wallet.name, e.toString()),
+          ) 
+          : changeProcessText(
+            S.of(context).wallet_list_failed_to_remove(wallet.name, e.toString()),
+          );
         }
       }
 
-      auth.close();
-    });
+      auth?.close();
   }
 
   void changeProcessText(String text) {

lib/store/settings_store.dart

@@ -1,9 +1,9 @@
 import 'package:cake_wallet/bitcoin/bitcoin.dart';
+import 'package:cake_wallet/entities/pin_code_required_duration.dart';
 import 'package:cake_wallet/entities/preferences_key.dart';
 import 'package:cw_core/transaction_priority.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
 import 'package:cake_wallet/themes/theme_list.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
@@ -17,7 +17,6 @@ import 'package:cake_wallet/entities/fiat_currency.dart';
 import 'package:cw_core/node.dart';
 import 'package:cake_wallet/monero/monero.dart';
 import 'package:cake_wallet/entities/action_list_display_mode.dart';
-import 'package:cake_wallet/.secrets.g.dart' as secrets;
 
 part 'settings_store.g.dart';
 
@@ -39,6 +38,7 @@ abstract class SettingsStoreBase with Store {
       required this.shouldShowYatPopup,
       required this.isBitcoinBuyEnabled,
       required this.actionlistDisplayMode,
+      required this.pinTimeOutDuration,
       TransactionPriority? initialBitcoinTransactionPriority,
       TransactionPriority? initialMoneroTransactionPriority})
   : nodes = ObservableMap<WalletType, Node>.of(nodes),
@@ -108,6 +108,11 @@ abstract class SettingsStoreBase with Store {
         (String languageCode) => sharedPreferences.setString(
             PreferencesKey.currentLanguageCode, languageCode));
 
+    reaction(
+        (_) => pinTimeOutDuration,
+        (PinCodeRequiredDuration pinCodeInterval) => sharedPreferences.setInt(
+            PreferencesKey.pinTimeOutDuration, pinCodeInterval.value));
+
     reaction(
         (_) => balanceDisplayMode,
         (BalanceDisplayMode mode) => sharedPreferences.setInt(
@@ -124,6 +129,7 @@ abstract class SettingsStoreBase with Store {
 
   static const defaultPinLength = 4;
   static const defaultActionsMode = 11;
+  static const defaultPinCodeTimeOutDuration = 10;
 
   @observable
   FiatCurrency fiatCurrency;
@@ -149,6 +155,9 @@ abstract class SettingsStoreBase with Store {
   @observable
   int pinCodeLength;
 
+  @observable
+  PinCodeRequiredDuration pinTimeOutDuration;
+
   @computed
   ThemeData get theme => currentTheme.themeData;
 
@@ -227,13 +236,15 @@ abstract class SettingsStoreBase with Store {
             : ThemeType.bright.index;
     final savedTheme = ThemeList.deserialize(
         raw: sharedPreferences.getInt(PreferencesKey.currentTheme) ??
-            legacyTheme ??
-            0);
+            legacyTheme);
     final actionListDisplayMode = ObservableList<ActionListDisplayMode>();
     actionListDisplayMode.addAll(deserializeActionlistDisplayModes(
         sharedPreferences.getInt(PreferencesKey.displayActionListModeKey) ??
             defaultActionsMode));
     var pinLength = sharedPreferences.getInt(PreferencesKey.currentPinLength);
+    final pinCodeTimeOutDuration = PinCodeRequiredDuration.deserialize(raw: sharedPreferences.getInt(PreferencesKey.pinTimeOutDuration) 
+      ?? defaultPinCodeTimeOutDuration);
+    
     // If no value
     if (pinLength == null || pinLength == 0) {
       pinLength = defaultPinLength;
@@ -287,6 +298,7 @@ abstract class SettingsStoreBase with Store {
         initialTheme: savedTheme,
         actionlistDisplayMode: actionListDisplayMode,
         initialPinLength: pinLength,
+        pinTimeOutDuration: pinCodeTimeOutDuration,
         initialLanguageCode: savedLanguageCode,
         initialMoneroTransactionPriority: moneroTransactionPriority,
         initialBitcoinTransactionPriority: bitcoinTransactionPriority,

lib/view_model/auth_view_model.dart

@@ -17,7 +17,9 @@ abstract class AuthViewModelBase with Store {
   AuthViewModelBase(this._authService, this._sharedPreferences,
       this._settingsStore, this._biometricAuth)
       : _failureCounter = 0,
-        state = InitialExecutionState();
+        state = InitialExecutionState(){
+           reaction((_) => state, _saveLastAuthTime);
+      }
 
   static const maxFailedLogins = 3;
   static const banTimeout = 180; // 3 minutes
@@ -118,4 +120,10 @@ abstract class AuthViewModelBase with Store {
       state = FailureState(e.toString());
     }
   }
+
+  void _saveLastAuthTime(ExecutionState state){
+    if(state is ExecutedSuccessfullyState){
+    _authService.saveLastAuthTime();
+    }
+  }
 }

lib/view_model/settings/settings_view_model.dart

@@ -1,3 +1,5 @@
+import 'package:cake_wallet/core/auth_service.dart';
+import 'package:cake_wallet/entities/pin_code_required_duration.dart';
 import 'package:cake_wallet/store/yat/yat_store.dart';
 import 'package:mobx/mobx.dart';
 import 'package:package_info/package_info.dart';
@@ -41,6 +43,7 @@ abstract class SettingsViewModelBase with Store {
   SettingsViewModelBase(
       this._settingsStore,
       this._yatStore,
+      this._authService,
       WalletBase<Balance, TransactionHistoryBase<TransactionInfo>,
               TransactionInfo>
           wallet)
@@ -94,6 +97,10 @@ abstract class SettingsViewModelBase with Store {
   @computed
   FiatCurrency get fiatCurrency => _settingsStore.fiatCurrency;
 
+  @computed
+  PinCodeRequiredDuration get pinCodeRequiredDuration =>
+    _settingsStore.pinTimeOutDuration;
+
   @computed
   String get languageCode => _settingsStore.languageCode;
 
@@ -135,6 +142,7 @@ abstract class SettingsViewModelBase with Store {
   final Map<String, String> itemHeaders;
   final SettingsStore _settingsStore;
   final YatStore _yatStore;
+  final AuthService _authService;
   final WalletType walletType;
   final BiometricAuth _biometricAuth;
   final  WalletBase<Balance, TransactionHistoryBase<TransactionInfo>,
@@ -207,6 +215,10 @@ abstract class SettingsViewModelBase with Store {
     }
   }
 
+  @action
+  setPinCodeRequiredDuration(PinCodeRequiredDuration duration) =>
+      _settingsStore.pinTimeOutDuration = duration;
+
   String getDisplayPriority(dynamic priority) {
     final _priority = priority as TransactionPriority;
 
@@ -222,4 +234,6 @@ abstract class SettingsViewModelBase with Store {
   void onDisplayPrioritySelected(TransactionPriority priority) =>
     _settingsStore.priority[_wallet.type] = priority;
 
+  bool checkPinCodeRiquired() => _authService.requireAuth();
+
 }

lib/view_model/wallet_list/wallet_list_view_model.dart

@@ -1,5 +1,5 @@
+import 'package:cake_wallet/core/auth_service.dart';
 import 'package:cake_wallet/core/wallet_loading_service.dart';
-import 'package:cake_wallet/view_model/wallet_new_vm.dart';
 import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/di.dart';
@@ -55,4 +55,8 @@ abstract class WalletListViewModelBase with Store {
             info.type == _appStore.wallet!.type,
         isEnabled: availableWalletTypes.contains(info.type))));
   }
+
+  bool checkIfAuthRequired(){
+    return getIt.get<AuthService>().requireAuth();
+  }
 }

res/values/strings_de.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Datenschutzeinstellungen",
   "privacy": "Datenschutz",
   "display_settings": "Anzeigeeinstellungen",
-  "other_settings": "Andere Einstellungen"
+  "other_settings": "Andere Einstellungen",
+  "require_pin_after": "PIN anfordern nach",
+  "always": "immer",
+  "minutes_to_pin_code": "${minute} Minuten"
 }

res/values/strings_en.arb

@@ -658,5 +658,8 @@
   "privacy_settings": "Privacy settings",
   "privacy": "Privacy",
   "display_settings": "Display settings",
-  "other_settings": "Other settings"
+  "other_settings": "Other settings",
+  "require_pin_after": "Require PIN after",
+  "always": "Always",
+  "minutes_to_pin_code": "${minute} minutes"
 }

res/values/strings_es.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Configuración de privacidad",
   "privacy": "Privacidad",
   "display_settings": "Configuración de pantalla",
-  "other_settings": "Otras configuraciones"
+  "other_settings": "Otras configuraciones",
+  "require_pin_after": "Requerir PIN después de",
+  "always": "siempre",
+  "minutes_to_pin_code": "${minute} minutos"
 }

res/values/strings_fr.arb

@@ -653,5 +653,8 @@
   "privacy_settings": "Paramètres de confidentialité",
   "privacy": "Confidentialité",
   "display_settings": "Paramètres d'affichage",
-  "other_settings": "Autres paramètres"
+  "other_settings": "Autres paramètres",
+  "require_pin_after": "NIP requis après",
+  "always": "toujours",
+  "minutes_to_pin_code": "${minute} minutes"
 }

res/values/strings_hi.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "गोपनीयता सेटिंग्स",
   "privacy": "गोपनीयता",
   "display_settings": "प्रदर्शन सेटिंग्स",
-  "other_settings": "अन्य सेटिंग्स"
+  "other_settings": "अन्य सेटिंग्स",
+  "require_pin_after": "इसके बाद पिन आवश्यक है",
+  "always": "हमेशा",
+  "minutes_to_pin_code": "${minute} मिनट"
 }

res/values/strings_hr.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Postavke privatnosti",
   "privacy": "Privatnost",
   "display_settings": "Postavke zaslona",
-  "other_settings": "Ostale postavke"
+  "other_settings": "Ostale postavke",
+  "require_pin_after": "Zahtijevaj PIN nakon",
+  "always": "Uvijek",
+  "minutes_to_pin_code": "${minute} minuta"
 }

res/values/strings_it.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Impostazioni privacy",
   "privacy": "Privacy",
   "display_settings": "Impostazioni di visualizzazione",
-  "other_settings": "Altre impostazioni"
+  "other_settings": "Altre impostazioni",
+  "require_pin_after": "Richiedi PIN dopo",
+  "always": "sempre",
+  "minutes_to_pin_code": "${minute} minuti"
 }

res/values/strings_ja.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "プライバシー設定",
   "privacy": "プライバシー",
   "display_settings": "表示設定",
-  "other_settings": "その他の設定"
+  "other_settings": "その他の設定",
+  "require_pin_after": "後に PIN が必要",
+  "always": "いつも",
+  "minutes_to_pin_code": "${minute} 分"
 }

res/values/strings_ko.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "개인정보 설정",
   "privacy": "프라이버시",
   "display_settings": "디스플레이 설정",
-  "other_settings": "기타 설정"
+  "other_settings": "기타 설정",
+  "require_pin_after": "다음 이후에 PIN 필요",
+  "always": "언제나",
+  "minutes_to_pin_code": "${minute}분"
 }

res/values/strings_nl.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Privacy-instellingen",
   "privacy": "Privacy",
   "display_settings": "Weergave-instellingen",
-  "other_settings": "Andere instellingen"
+  "other_settings": "Andere instellingen",
+  "require_pin_after": "Pincode vereist na",
+  "always": "altijd",
+  "minutes_to_pin_code": "${minute} minuten"
 }

res/values/strings_pl.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Ustawienia prywatności",
   "privacy": "Prywatność",
   "display_settings": "Ustawienia wyświetlania",
-  "other_settings": "Inne ustawienia"
+  "other_settings": "Inne ustawienia",
+  "require_pin_after": "Wymagaj kodu PIN po",
+  "always": "zawsze",
+  "minutes_to_pin_code": "${minute} minut"
 }

res/values/strings_pt.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Configurações de privacidade",
   "privacy": "Privacidade",
   "display_settings": "Configurações de exibição",
-  "other_settings": "Outras configurações"
+  "other_settings": "Outras configurações",
+  "require_pin_after": "Exigir PIN após",
+  "always": "sempre",
+  "minutes_to_pin_code": "${minute} minutos"
 }

res/values/strings_ru.arb

@@ -655,5 +655,8 @@
   "privacy_settings": "Настройки конфиденциальности",
   "privacy": "Конфиденциальность",
   "display_settings": "Настройки отображения",
-  "other_settings": "Другие настройки"
+  "other_settings": "Другие настройки",
+  "require_pin_after": "Требовать ПИН после",
+  "always": "всегда",
+  "minutes_to_pin_code": "${minute} минут"
 }

res/values/strings_uk.arb

@@ -654,6 +654,9 @@
   "privacy_settings": "Налаштування конфіденційності",
   "privacy": "Конфіденційність",
   "display_settings": "Налаштування дисплея",
-  "other_settings": "Інші налаштування"
+  "other_settings": "Інші налаштування",
+  "require_pin_after": "Вимагати PIN після",
+  "always": "Завжди",
+  "minutes_to_pin_code": "${minute} хвилин"
 
 }

res/values/strings_zh.arb

@@ -653,5 +653,8 @@
   "privacy_settings": "隐私设置",
   "privacy":"隐私",
   "display_settings": "显示设置",
-  "other_settings": "其他设置"
+  "other_settings": "其他设置",
+  "require_pin_after": "之后需要 PIN",
+  "always": "总是",
+  "minutes_to_pin_code": "${minute} 分钟"
 }