CW-673: Save Haven seeds to show it to the user after Haven removal

cw_core/lib/hive_type_ids.dart

@@ -18,4 +18,5 @@ const SPL_TOKEN_TYPE_ID             = 16;
 const DERIVATION_INFO_TYPE_ID       = 17;
 const TRON_TOKEN_TYPE_ID            = 18;
 const HARDWARE_WALLET_TYPE_TYPE_ID  = 19;
-const MWEB_UTXO_TYPE_ID             = 20;
+const MWEB_UTXO_TYPE_ID             = 20;
+const HAVEN_SEED_STORE_TYPE_ID      = 21;

lib/entities/default_settings_migration.dart

@@ -1,9 +1,13 @@
 import 'dart:convert';
 import 'dart:io' show Directory, File, Platform;
 import 'package:cake_wallet/bitcoin/bitcoin.dart';
+import 'package:cake_wallet/core/key_service.dart';
 import 'package:cake_wallet/core/secure_storage.dart';
 import 'package:cake_wallet/entities/exchange_api_mode.dart';
 import 'package:cake_wallet/entities/fiat_api_mode.dart';
+import 'package:cake_wallet/entities/haven_seed_store.dart';
+import 'package:cake_wallet/haven/haven.dart';
+import 'package:cw_core/cake_hive.dart';
 import 'package:cw_core/pathForWallet.dart';
 import 'package:cake_wallet/entities/secret_store_key.dart';
 import 'package:cw_core/root_dir.dart';
@@ -51,7 +55,8 @@ Future<void> defaultSettingsMigration(
     required Box<Node> powNodes,
     required Box<WalletInfo> walletInfoSource,
     required Box<Trade> tradeSource,
-    required Box<Contact> contactSource}) async {
+    required Box<Contact> contactSource,
+    required Box<HavenSeedStore> havenSeedStore}) async {
   if (Platform.isIOS) {
     await ios_migrate_v1(walletInfoSource, tradeSource, contactSource);
   }
@@ -276,6 +281,8 @@ Future<void> defaultSettingsMigration(
             oldUri: 'cakewallet.com',
           );
           break;
+        case 45:
+          await _backupHavenSeeds(havenSeedStore);
 
         default:
           break;
@@ -291,6 +298,13 @@ Future<void> defaultSettingsMigration(
   await sharedPreferences.setInt(PreferencesKey.currentDefaultSettingsMigrationVersion, version);
 }
 
+Future<void> _backupHavenSeeds(Box<HavenSeedStore> havenSeedStore) async {
+  final future = haven?.backupHavenSeeds(havenSeedStore);
+  if (future != null) {
+    await future;
+  }
+  return;
+}
 /// generic function for changing any wallet default node
 /// instead of making a new function for each change
 Future<void> _changeDefaultNode({

lib/entities/haven_seed_store.dart

@@ -0,0 +1,19 @@
+import 'package:cw_core/hive_type_ids.dart';
+import 'package:hive/hive.dart';
+
+part 'haven_seed_store.g.dart';
+
+@HiveType(typeId: HavenSeedStore.typeId)
+class HavenSeedStore extends HiveObject {
+  HavenSeedStore({required this.id, this.seed});
+
+  static const typeId = HAVEN_SEED_STORE_TYPE_ID;
+  static const boxName = 'HavenSeedStore';
+  static const boxKey = 'havenSeedStoreKey';
+
+  @HiveField(0, defaultValue: '')
+  String id;
+
+  @HiveField(2)
+  String? seed;
+}

lib/haven/cw_haven.dart

@@ -307,6 +307,23 @@ class CWHaven extends Haven {
     return havenTransactionInfo.accountIndex;
   }
 
+  @override
+  Future<void> backupHavenSeeds(Box<HavenSeedStore> havenSeedStore) async {
+    final walletInfoSource = await CakeHive.openBox<WalletInfo>(WalletInfo.boxName);
+    final wallets = walletInfoSource.values
+      .where((element) => element.type == WalletType.haven);
+    for (var w in wallets) {
+      final walletService = HavenWalletService(walletInfoSource);
+      final flutterSecureStorage = secureStorageShared;
+      final keyService = KeyService(flutterSecureStorage);
+      final password = await keyService.getWalletPassword(walletName: w.name);
+      final wallet = await walletService.openWallet(w.name, password);
+      await havenSeedStore.add(HavenSeedStore(id: wallet.id, seed: wallet.seed));
+      wallet.close();
+    }
+    await havenSeedStore.flush();
+  }
+
   @override
   WalletService createHavenWalletService(Box<WalletInfo> walletInfoSource) {
     return HavenWalletService(walletInfoSource);

lib/main.dart

@@ -9,6 +9,7 @@ import 'package:cake_wallet/entities/contact.dart';
 import 'package:cake_wallet/entities/default_settings_migration.dart';
 import 'package:cake_wallet/entities/get_encryption_key.dart';
 import 'package:cake_wallet/core/secure_storage.dart';
+import 'package:cake_wallet/entities/haven_seed_store.dart';
 import 'package:cake_wallet/entities/language_service.dart';
 import 'package:cake_wallet/entities/template.dart';
 import 'package:cake_wallet/entities/transaction_description.dart';
@@ -164,6 +165,10 @@ Future<void> initializeAppConfigs() async {
     CakeHive.registerAdapter(AnonpayInvoiceInfoAdapter());
   }
 
+  if (!CakeHive.isAdapterRegistered(HavenSeedStore.typeId)) {
+    CakeHive.registerAdapter(HavenSeedStoreAdapter());
+  }
+
   if (!CakeHive.isAdapterRegistered(MwebUtxo.typeId)) {
     CakeHive.registerAdapter(MwebUtxoAdapter());
   }
@@ -188,6 +193,12 @@ Future<void> initializeAppConfigs() async {
   final anonpayInvoiceInfo = await CakeHive.openBox<AnonpayInvoiceInfo>(AnonpayInvoiceInfo.boxName);
   final unspentCoinsInfoSource = await CakeHive.openBox<UnspentCoinsInfo>(UnspentCoinsInfo.boxName);
 
+  final havenSeedStoreBoxKey =
+      await getEncryptionKey(secureStorage: secureStorage, forKey: HavenSeedStore.boxKey);
+  final havenSeedStore = await CakeHive.openBox<HavenSeedStore>(
+      HavenSeedStore.boxName,
+      encryptionKey: havenSeedStoreBoxKey);
+
   await initialSetup(
     sharedPreferences: await SharedPreferences.getInstance(),
     nodes: nodes,
@@ -203,7 +214,8 @@ Future<void> initializeAppConfigs() async {
     transactionDescriptions: transactionDescriptions,
     secureStorage: secureStorage,
     anonpayInvoiceInfo: anonpayInvoiceInfo,
-    initialMigrationVersion: 44,
+    havenSeedStore: havenSeedStore,
+    initialMigrationVersion: 45,
   );
 }
 
@@ -222,7 +234,8 @@ Future<void> initialSetup(
     required SecureStorage secureStorage,
     required Box<AnonpayInvoiceInfo> anonpayInvoiceInfo,
     required Box<UnspentCoinsInfo> unspentCoinsInfoSource,
-    int initialMigrationVersion = 15}) async {
+    required Box<HavenSeedStore> havenSeedStore,
+    int initialMigrationVersion = 15, }) async {
   LanguageService.loadLocaleList();
   await defaultSettingsMigration(
       secureStorage: secureStorage,
@@ -232,7 +245,8 @@ Future<void> initialSetup(
       contactSource: contactSource,
       tradeSource: tradesSource,
       nodes: nodes,
-      powNodes: powNodes);
+      powNodes: powNodes,
+      havenSeedStore: havenSeedStore);
   await setup(
     walletInfoSource: walletInfoSource,
     nodeSource: nodes,

tool/configure.dart

@@ -655,7 +655,14 @@ import 'package:cw_core/output_info.dart';
 import 'package:cake_wallet/view_model/send/output.dart';
 import 'package:cw_core/wallet_service.dart';
 import 'package:hive/hive.dart';
-import 'package:cw_core/crypto_currency.dart';""";
+import 'package:cw_core/crypto_currency.dart';
+import 'package:cake_wallet/core/key_service.dart';
+import 'package:cake_wallet/core/secure_storage.dart';
+import 'package:cake_wallet/entities/haven_seed_store.dart';
+import 'package:cw_core/cake_hive.dart';
+import 'package:cw_core/wallet_info.dart';
+import 'package:cw_core/wallet_type.dart';
+""";
   const havenCWHeaders = """
 import 'package:cw_core/get_height_by_date.dart';
 import 'package:cw_core/monero_amount_format.dart';
@@ -678,6 +685,7 @@ import 'package:cw_haven/mnemonics/french.dart';
 import 'package:cw_haven/mnemonics/italian.dart';
 import 'package:cw_haven/haven_transaction_creation_credentials.dart';
 import 'package:cw_haven/api/balance_list.dart';
+import 'package:cw_haven/haven_wallet_service.dart';
 """;
   const havenCwPart = "part 'cw_haven.dart';";
   const havenContent = """
@@ -778,6 +786,7 @@ abstract class Haven {
   void onStartup();
   int getTransactionInfoAccountId(TransactionInfo tx);
   WalletService createHavenWalletService(Box<WalletInfo> walletInfoSource);
+  Future<void> backupHavenSeeds(Box<HavenSeedStore> havenSeedStore);
   CryptoCurrency assetOfTransaction(TransactionInfo tx);
   List<AssetRate> getAssetRate();
 }