Fixes for backups for monero.com app

lib/core/backup_service.dart

@@ -14,6 +14,7 @@ import 'package:cake_wallet/entities/preferences_key.dart';
 import 'package:cake_wallet/entities/secret_store_key.dart';
 import 'package:cw_core/wallet_info.dart';
 import 'package:cake_wallet/.secrets.g.dart' as secrets;
+import 'package:cake_wallet/wallet_types.g.dart';
 
 class BackupService {
   BackupService(this._flutterSecureStorage, this._walletInfoSource,
@@ -29,6 +30,7 @@ class BackupService {
   final SharedPreferences _sharedPreferences;
   final Box<WalletInfo> _walletInfoSource;
   final KeyService _keyService;
+  List<WalletInfo> _correctWallets;
 
   Future<void> importBackup(Uint8List data, String password,
       {String nonce = secrets.backupSalt}) async {
@@ -118,10 +120,35 @@ class BackupService {
       }
     });
 
+    await _verifyWallets();
     await _importKeychainDump(password, nonce: nonce);
     await _importPreferencesDump();
   }
 
+  Future<void> _verifyWallets() async {
+    final walletInfoSource = await _reloadHiveWalletInfoBox();
+    _correctWallets = walletInfoSource
+      .values
+      .where((info) => availableWalletTypes.contains(info.type))
+      .toList();
+
+    if (_correctWallets.isEmpty) {
+      throw Exception('Correct wallets not detected');
+    }
+  }
+
+  Future<Box<WalletInfo>> _reloadHiveWalletInfoBox() async {
+    final appDir = await getApplicationDocumentsDirectory();
+    await Hive.close();
+    Hive.init(appDir.path);
+
+    if (!Hive.isAdapterRegistered(WalletInfo.typeId)) {
+      Hive.registerAdapter(WalletInfoAdapter());
+    }
+
+    return await Hive.openBox<WalletInfo>(WalletInfo.boxName);
+  }
+
   Future<void> _importPreferencesDump() async {
     final appDir = await getApplicationDocumentsDirectory();
     final preferencesFile = File('${appDir.path}/~_preferences_dump');
@@ -132,15 +159,26 @@ class BackupService {
 
     final data =
         json.decode(preferencesFile.readAsStringSync()) as Map<String, Object>;
+    String currentWalletName = data[PreferencesKey.currentWalletName] as String;
+    int currentWalletType = data[PreferencesKey.currentWalletType] as int;
+
+    final isCorrentCurrentWallet = _correctWallets
+      .any((info) => info.name == currentWalletName &&
+          info.type.index == currentWalletType);
+
+    if (!isCorrentCurrentWallet) {
+      currentWalletName = _correctWallets.first.name;
+      currentWalletType = _correctWallets.first.type.index;
+    }
 
     await _sharedPreferences.setString(PreferencesKey.currentWalletName,
-        data[PreferencesKey.currentWalletName] as String);
+        currentWalletName);
     await _sharedPreferences.setInt(PreferencesKey.currentNodeIdKey,
         data[PreferencesKey.currentNodeIdKey] as int);
     await _sharedPreferences.setInt(PreferencesKey.currentBalanceDisplayModeKey,
         data[PreferencesKey.currentBalanceDisplayModeKey] as int);
     await _sharedPreferences.setInt(PreferencesKey.currentWalletType,
-        data[PreferencesKey.currentWalletType] as int);
+        currentWalletType);
     await _sharedPreferences.setString(PreferencesKey.currentFiatCurrencyKey,
         data[PreferencesKey.currentFiatCurrencyKey] as String);
     await _sharedPreferences.setBool(

lib/src/screens/dashboard/wallet_menu.dart

@@ -52,7 +52,6 @@ class WalletMenu {
           image: Image.asset('assets/images/open_book_menu.png',
               height: 16, width: 16),
 	  handler: () => Navigator.of(context).pushNamed(Routes.addressBook)),
-      if(!isMoneroOnly)
 	WalletMenuItem(
 		  title: S.current.backup,
           	  image: Image.asset('assets/images/restore_wallet.png',

lib/src/screens/wallet_list/wallet_list_page.dart

@@ -80,7 +80,7 @@ class WalletListBodyState extends State<WalletListBody> {
                         : Theme.of(context).backgroundColor;
                     final row = GestureDetector(
                         onTap: () async {
-                          if (wallet.isCurrent) {
+                          if (wallet.isCurrent || !wallet.isEnabled) {
                             return;
                           }
 
@@ -132,7 +132,9 @@ class WalletListBodyState extends State<WalletListBody> {
                                     crossAxisAlignment:
                                         CrossAxisAlignment.center,
                                     children: <Widget>[
-                                      _imageFor(type: wallet.type),
+                                      wallet.isEnabled
+                                        ? _imageFor(type: wallet.type)
+                                        : nonWalletTypeIcon,
                                       SizedBox(width: 10),
                                       Text(
                                         wallet.name,

lib/src/screens/welcome/welcome_page.dart

@@ -161,13 +161,8 @@ class WelcomePage extends BasePage {
                           padding: EdgeInsets.only(top: 10),
                           child: PrimaryImageButton(
                               onPressed: () {
-			          if (isMoneroOnly) {
-				    Navigator.of(context).pushNamed(Routes.moneroRestoreWalletFromWelcome);
-				  } else {
-				    Navigator.pushNamed(context,
-                                      Routes.restoreOptions);
-				  }
-			      },
+                                Navigator.pushNamed(context, Routes.restoreOptions);
+                              },
                               image: restoreWalletImage,
                               text: S
                                   .of(context)

lib/view_model/backup_view_model.dart

@@ -7,6 +7,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:mobx/mobx.dart';
 import 'package:intl/intl.dart';
+import 'package:cake_wallet/wallet_type_utils.dart';
 
 part 'backup_view_model.g.dart';
 
@@ -58,9 +59,10 @@ abstract class BackupViewModelBase with Store {
       state = ExecutedSuccessfullyState();
       final now = DateTime.now();
       final formatter = DateFormat('yyyy-MM-dd_Hm');
+      final snakeAppName = approximatedAppName.replaceAll(' ', '_').toLowerCase();
+      final fileName = '${snakeAppName}_backup_${formatter.format(now)}';
 
-      return BackupExportFile(backupContent.toList(),
-          name: 'cake_wallet_backup_${formatter.format(now)}');
+      return BackupExportFile(backupContent.toList(), name: fileName);
     } catch (e) {
       print(e.toString());
       state = FailureState(e.toString());

lib/view_model/wallet_list/wallet_list_item.dart

@@ -3,10 +3,15 @@ import 'package:cw_core/wallet_type.dart';
 
 class WalletListItem {
   const WalletListItem(
-      {@required this.name, @required this.type, @required this.key, this.isCurrent = false});
+      {@required this.name,
+       @required this.type,
+      @required this.key,
+      this.isCurrent = false,
+      this.isEnabled = true});
 
   final String name;
   final WalletType type;
   final bool isCurrent;
   final dynamic key;
+  final bool isEnabled;
 }

lib/view_model/wallet_list/wallet_list_view_model.dart

@@ -8,6 +8,7 @@ import 'package:cw_core/wallet_service.dart';
 import 'package:cake_wallet/view_model/wallet_list/wallet_list_item.dart';
 import 'package:cw_core/wallet_info.dart';
 import 'package:cw_core/wallet_type.dart';
+import 'package:cake_wallet/wallet_types.g.dart';
 
 part 'wallet_list_view_model.g.dart';
 
@@ -55,6 +56,7 @@ abstract class WalletListViewModelBase with Store {
         type: info.type,
         key: info.key,
         isCurrent: info.name == _appStore.wallet.name &&
-            info.type == _appStore.wallet.type)));
+            info.type == _appStore.wallet.type,
+        isEnabled: availableWalletTypes.contains(info.type))));
   }
 }

lib/wallet_type_utils.dart

@@ -4,4 +4,10 @@ import 'package:cake_wallet/wallet_types.g.dart';
 bool get isMoneroOnly {
      return availableWalletTypes.length == 1
      	    && availableWalletTypes.first == WalletType.monero;
+}
+
+String get approximatedAppName {
+     return isMoneroOnly
+     ? 'Monero.com'
+     : 'Cake Wallet';
 }