debatably better refactoring of derivationInfo, migration needed

cw_bitcoin/lib/bitcoin_wallet.dart

@@ -38,7 +38,6 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
             initialBalance: initialBalance,
             seedBytes: seedBytes,
             currency: CryptoCurrency.btc) {
-    
     // in a standard BIP44 wallet, mainHd derivation path = m/84'/0'/0'/0 (account 0, index unspecified here)
     // the sideHd derivation path = m/84'/0'/0'/1 (account 1, index unspecified here)
     walletAddresses = BitcoinWalletAddresses(walletInfo,
@@ -47,9 +46,11 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
         initialRegularAddressIndex: initialRegularAddressIndex,
         initialChangeAddressIndex: initialChangeAddressIndex,
         mainHd: bitcoin.HDWallet.fromSeed(seedBytes, network: networkType)
-            .derivePath(walletInfo.derivationPath!),
-        sideHd: bitcoin.HDWallet.fromSeed(seedBytes, network: networkType).derivePath(
-            walletInfo.derivationPath!.substring(0, walletInfo.derivationPath!.length - 1) + "1"),
+            .derivePath(walletInfo.derivationInfo!.derivationPath!),
+        sideHd: bitcoin.HDWallet.fromSeed(seedBytes, network: networkType).derivePath(walletInfo
+                .derivationInfo!.derivationPath!
+                .substring(0, walletInfo.derivationInfo!.derivationPath!.length - 1) +
+            "1"),
         networkType: networkType);
   }
 
@@ -64,14 +65,14 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
       int initialChangeAddressIndex = 0}) async {
     late Uint8List seedBytes;
 
-    switch (walletInfo.derivationType) {
-      case DerivationType.electrum2:
-        seedBytes = await mnemonicToSeedBytes(mnemonic);
-        break;
+    switch (walletInfo.derivationInfo?.derivationType) {
       case DerivationType.bip39:
-      default:
         seedBytes = await bip39.mnemonicToSeed(mnemonic);
         break;
+      case DerivationType.electrum2:
+      default:
+        seedBytes = await mnemonicToSeedBytes(mnemonic);
+        break;
     }
 
     return BitcoinWallet(
@@ -94,20 +95,17 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
   }) async {
     final snp = await ElectrumWallletSnapshot.load(name, walletInfo.type, password);
 
-    walletInfo.derivationType = snp.derivationType;
-    walletInfo.derivationPath = snp.derivationPath;
+    walletInfo.derivationInfo ??= DerivationInfo(
+      derivationType: snp.derivationType ?? DerivationType.electrum2,
+      derivationPath: snp.derivationPath,
+    );
 
     // set the default if not present:
-    if (walletInfo.derivationPath == null) {
-      walletInfo.derivationPath = "m/0'/1";
-    }
-    if (walletInfo.derivationType == null) {
-      walletInfo.derivationType = DerivationType.electrum2;
-    }
+    walletInfo.derivationInfo!.derivationPath = snp.derivationPath ?? "m/0'/1";
 
     late Uint8List seedBytes;
 
-    switch (walletInfo.derivationType) {
+    switch (walletInfo.derivationInfo!.derivationType) {
       case DerivationType.electrum2:
         seedBytes = await mnemonicToSeedBytes(snp.mnemonic);
         break;

cw_bitcoin/lib/bitcoin_wallet_creation_credentials.dart

@@ -2,8 +2,11 @@ import 'package:cw_core/wallet_credentials.dart';
 import 'package:cw_core/wallet_info.dart';
 
 class BitcoinNewWalletCredentials extends WalletCredentials {
-  BitcoinNewWalletCredentials({required String name, WalletInfo? walletInfo})
+  BitcoinNewWalletCredentials(
+      {required String name, WalletInfo? walletInfo, this.derivationType, this.derivationPath})
       : super(name: name, walletInfo: walletInfo);
+  DerivationType? derivationType;
+  String? derivationPath;
 }
 
 class BitcoinRestoreWalletFromSeedCredentials extends WalletCredentials {
@@ -11,16 +14,17 @@ class BitcoinRestoreWalletFromSeedCredentials extends WalletCredentials {
     required String name,
     required String password,
     required this.mnemonic,
+    WalletInfo? walletInfo,
     DerivationType? derivationType,
     String? derivationPath,
-    WalletInfo? walletInfo,
   }) : super(
-          name: name,
-          password: password,
-          walletInfo: walletInfo,
-          derivationType: derivationType,
-          derivationPath: derivationPath,
-        );
+            name: name,
+            password: password,
+            walletInfo: walletInfo,
+            derivationInfo: DerivationInfo(
+              derivationType: derivationType,
+              derivationPath: derivationPath,
+            ));
 
   final String mnemonic;
 }

cw_bitcoin/lib/bitcoin_wallet_service.dart

@@ -46,13 +46,13 @@ class BitcoinWalletService extends WalletService<BitcoinNewWalletCredentials,
 
   @override
   Future<BitcoinWallet> create(BitcoinNewWalletCredentials credentials) async {
-    // default derivation type/path for bitcoin wallets:
-    if (credentials.walletInfo!.derivationType == null) {
-      credentials.walletInfo!.derivationType = DerivationType.electrum2;
-    }
-    if (credentials.walletInfo!.derivationPath == null) {
-      credentials.walletInfo!.derivationPath = "m/0'/1";
-    }
+    // set default if not present:
+    DerivationType derivationType = credentials.derivationType ?? DerivationType.electrum2;
+    String derivationPath = credentials.derivationPath ?? "m/0'/1";
+    // only set if not in the walletInfo already:
+    credentials.walletInfo!.derivationInfo ??=
+        DerivationInfo(derivationType: derivationType, derivationPath: derivationPath);
+
     final wallet = await BitcoinWalletBase.create(
         mnemonic: await generateElectrumMnemonic(strength: 132),
         password: credentials.password!,

cw_core/lib/hive_type_ids.dart

@@ -14,3 +14,4 @@ const ERC20_TOKEN_TYPE_ID           = 12;
 const NANO_ACCOUNT_TYPE_ID          = 13;
 const POW_NODE_TYPE_ID              = 14;
 const DERIVATION_TYPE_TYPE_ID       = 15;
+const DERIVATION_INFO_TYPE_ID       = 16;

cw_core/lib/wallet_credentials.dart

@@ -6,14 +6,12 @@ abstract class WalletCredentials {
     this.height,
     this.walletInfo,
     this.password,
-    this.derivationType,
-    this.derivationPath,
+    this.derivationInfo,
   });
 
   final String name;
   final int? height;
   String? password;
-  DerivationType? derivationType;
-  String? derivationPath;
   WalletInfo? walletInfo;
+  DerivationInfo? derivationInfo;
 }

cw_core/lib/wallet_info.dart

@@ -21,10 +21,10 @@ enum DerivationType {
   @HiveField(5)
   electrum2,
 }
-
-class DerivationInfo {
+@HiveType(typeId: DerivationInfo.typeId)
+class DerivationInfo extends HiveObject {
   DerivationInfo({
-    required this.derivationType,
+    this.derivationType,
     this.derivationPath,
     this.balance = "",
     this.address = "",
@@ -33,10 +33,12 @@ class DerivationInfo {
     this.description,
   });
 
+  static const typeId = DERIVATION_INFO_TYPE_ID;
+
   String balance;
   String address;
   int height;
-  final DerivationType derivationType;
+  DerivationType? derivationType;
   String? derivationPath;
   final String? script_type;
   final String? description;
@@ -57,8 +59,7 @@ class WalletInfo extends HiveObject {
       this.yatEid,
       this.yatLastUsedAddressRaw,
       this.showIntroCakePayCard,
-      this.derivationType,
-      this.derivationPath)
+      this.derivationInfo)
       : _yatLastUsedAddressController = StreamController<String>.broadcast();
 
   factory WalletInfo.external({
@@ -74,8 +75,7 @@ class WalletInfo extends HiveObject {
     bool? showIntroCakePayCard,
     String yatEid = '',
     String yatLastUsedAddressRaw = '',
-    DerivationType? derivationType,
-    String? derivationPath,
+    DerivationInfo? derivationInfo,
   }) {
     return WalletInfo(
         id,
@@ -90,8 +90,7 @@ class WalletInfo extends HiveObject {
         yatEid,
         yatLastUsedAddressRaw,
         showIntroCakePayCard,
-        derivationType,
-        derivationPath);
+        derivationInfo);
   }
 
   static const typeId = WALLET_INFO_TYPE_ID;
@@ -143,10 +142,7 @@ class WalletInfo extends HiveObject {
   List<String>? usedAddresses;
 
   @HiveField(16)
-  DerivationType? derivationType;
-
-  @HiveField(17)
-  String? derivationPath;
+  DerivationInfo? derivationInfo;
 
   String get yatLastUsedAddress => yatLastUsedAddressRaw ?? '';
 

cw_nano/lib/nano_wallet.dart

@@ -42,7 +42,7 @@ abstract class NanoWalletBase
   })  : syncStatus = NotConnectedSyncStatus(),
         _password = password,
         _mnemonic = mnemonic,
-        _derivationType = walletInfo.derivationType!,
+        _derivationType = walletInfo.derivationInfo!.derivationType!,
         _isTransactionUpdating = false,
         _client = NanoClient(),
         walletAddresses = NanoWalletAddresses(walletInfo),
@@ -354,7 +354,7 @@ abstract class NanoWalletBase
       derivationType = DerivationType.nano;
     }
 
-    walletInfo.derivationType = derivationType;
+    walletInfo.derivationInfo ??= DerivationInfo(derivationType: derivationType);
 
     return NanoWallet(
       walletInfo: walletInfo,

cw_nano/lib/nano_wallet_creation_credentials.dart

@@ -2,8 +2,15 @@ import 'package:cw_core/wallet_credentials.dart';
 import 'package:cw_core/wallet_info.dart';
 
 class NanoNewWalletCredentials extends WalletCredentials {
-  NanoNewWalletCredentials({required String name, String? password})
-      : super(name: name, password: password);
+  NanoNewWalletCredentials({
+    required String name,
+    String? password,
+    DerivationType? derivationType,
+  }) : super(
+          name: name,
+          password: password,
+          derivationInfo: DerivationInfo(derivationType: derivationType),
+        );
 }
 
 class NanoRestoreWalletFromSeedCredentials extends WalletCredentials {
@@ -14,11 +21,13 @@ class NanoRestoreWalletFromSeedCredentials extends WalletCredentials {
     String? password,
     DerivationType? derivationType,
   }) : super(
-          name: name,
-          password: password,
-          height: height,
-          derivationType: derivationType,
-        );
+            name: name,
+            password: password,
+            height: height,
+            derivationInfo: DerivationInfo(
+              derivationType: derivationType,
+              height: height,
+            ));
 
   final String mnemonic;
 }

cw_nano/lib/nano_wallet_service.dart

@@ -28,11 +28,12 @@ class NanoWalletService extends WalletService<NanoNewWalletCredentials,
   @override
   Future<WalletBase> create(NanoNewWalletCredentials credentials) async {
     // nano standard:
-    DerivationType derivationType = DerivationType.nano;
     String seedKey = NanoSeeds.generateSeed();
     String mnemonic = NanoUtil.seedToMnemonic(seedKey);
 
-    credentials.walletInfo!.derivationType = derivationType;
+    // set default if not present:
+    DerivationType derivationType = credentials.derivationInfo?.derivationType ?? DerivationType.nano;
+    credentials.walletInfo!.derivationInfo ??= DerivationInfo(derivationType: derivationType);
 
     final wallet = NanoWallet(
       walletInfo: credentials.walletInfo!,
@@ -88,7 +89,7 @@ class NanoWalletService extends WalletService<NanoNewWalletCredentials,
     }
 
     DerivationType derivationType = credentials.derivationType ?? DerivationType.nano;
-    credentials.walletInfo!.derivationType = derivationType;
+    credentials.walletInfo!.derivationInfo ??= DerivationInfo(derivationType: derivationType);
 
     String? mnemonic;
 
@@ -127,9 +128,10 @@ class NanoWalletService extends WalletService<NanoNewWalletCredentials,
       }
     }
 
-    DerivationType derivationType = credentials.derivationType ?? DerivationType.nano;
+    DerivationType derivationType =
+        credentials.walletInfo?.derivationInfo?.derivationType ?? DerivationType.nano;
 
-    credentials.walletInfo!.derivationType = derivationType;
+    credentials.walletInfo!.derivationInfo ??= DerivationInfo(derivationType: derivationType);
 
     final wallet = await NanoWallet(
       password: credentials.password!,

lib/main.dart

@@ -101,6 +101,10 @@ Future<void> initializeAppConfigs() async {
     CakeHive.registerAdapter(DerivationTypeAdapter());
   }
 
+  if (!Hive.isAdapterRegistered(DERIVATION_INFO_TYPE_ID)) {
+    CakeHive.registerAdapter(DerivationInfoAdapter());
+  }
+  
   if (!CakeHive.isAdapterRegistered(WALLET_TYPE_TYPE_ID)) {
     CakeHive.registerAdapter(WalletTypeAdapter());
   }

lib/nano/cw_nano.dart

@@ -96,6 +96,7 @@ class CWNano extends Nano {
       NanoNewWalletCredentials(
         name: name,
         password: password,
+        derivationType: DerivationType.nano,
       );
 
   @override

lib/src/screens/restore/wallet_restore_page.dart

@@ -110,8 +110,9 @@ class WalletRestorePage extends BasePage {
   final GlobalKey<WalletRestoreFromSeedFormState> walletRestoreFromSeedFormKey;
   final GlobalKey<WalletRestoreFromKeysFromState> walletRestoreFromKeysFormKey;
   final FocusNode _blockHeightFocusNode;
-  DerivationType derivationType = DerivationType.unknown;
-  String? derivationPath = null;
+  // DerivationType derivationType = DerivationType.unknown;
+  // String? derivationPath = null;
+  DerivationInfo? derivationInfo;
 
   @override
   Widget body(BuildContext context) {
@@ -294,8 +295,7 @@ class WalletRestorePage extends BasePage {
       }
     }
 
-    credentials['derivationType'] = this.derivationType;
-    credentials['derivationPath'] = this.derivationPath;
+    credentials['derivationInfo'] = this.derivationInfo;
     credentials['walletType'] = walletRestoreViewModel.type;
     return credentials;
   }
@@ -330,10 +330,12 @@ class WalletRestorePage extends BasePage {
 
     List<DerivationType> derivationTypes =
         await walletRestoreViewModel.getDerivationTypes(_credentials());
+    DerivationInfo? dInfo;
 
-    if (derivationTypes[0] == DerivationType.unknown || derivationTypes.length > 1) {
+    if (derivationTypes.length > 1) {
       // push screen to choose the derivation type:
-      List<DerivationInfo> derivations = await walletRestoreViewModel.getDerivationInfo(_credentials());
+      List<DerivationInfo> derivations =
+          await walletRestoreViewModel.getDerivationInfo(_credentials());
 
       int derivationsWithHistory = 0;
       int derivationWithHistoryIndex = 0;
@@ -344,33 +346,24 @@ class WalletRestorePage extends BasePage {
         }
       }
 
-
-      DerivationInfo? derivationInfo;
-
       if (derivationsWithHistory > 1) {
-        derivationInfo = await Navigator.of(context).pushNamed(Routes.restoreWalletChooseDerivation,
+        dInfo = await Navigator.of(context).pushNamed(Routes.restoreWalletChooseDerivation,
             arguments: derivations) as DerivationInfo?;
       } else if (derivationsWithHistory == 1) {
-        derivationInfo = derivations[derivationWithHistoryIndex];
-      } else if (derivationsWithHistory == 0) {
-        // default derivation:
-        derivationInfo = DerivationInfo(
-          derivationType: derivationTypes[0],
-          derivationPath: "m/0'/1",
-          height: 0,
-        );
+        dInfo = derivations[derivationWithHistoryIndex];
       }
 
-      if (derivationInfo == null) {
+      if (dInfo == null) {
         walletRestoreViewModel.state = InitialExecutionState();
         return;
       }
-      this.derivationType = derivationInfo.derivationType;
-      this.derivationPath = derivationInfo.derivationPath;
-    } else {
-      // electrum derivation:
-      this.derivationType = derivationTypes[0];
-      this.derivationPath = "m/0'/1";
+
+      this.derivationInfo = dInfo;
+    }
+
+    // get the default derivation for this wallet type:
+    if (this.derivationInfo == null) {
+      this.derivationInfo = walletRestoreViewModel.getDefaultDerivation();
     }
 
     walletRestoreViewModel.state = InitialExecutionState();

lib/view_model/wallet_creation_vm.dart

@@ -65,8 +65,7 @@ abstract class WalletCreationVMBase with Store {
         dirPath: dirPath,
         address: '',
         showIntroCakePayCard: (!walletCreationService.typeExists(type)) && type != WalletType.haven,
-        derivationPath: credentials.derivationPath,
-        derivationType: credentials.derivationType,
+        derivationInfo: credentials.derivationInfo,
       );
       credentials.walletInfo = walletInfo;
       final wallet = restoreWallet != null

lib/view_model/wallet_new_vm.dart

@@ -35,21 +35,20 @@ abstract class WalletNewVMBase extends WalletCreationVM with Store {
   WalletCredentials getCredentials(dynamic options) {
     switch (type) {
       case WalletType.monero:
-        return monero!.createMoneroNewWalletCredentials(
-            name: name, language: options as String);
+        return monero!.createMoneroNewWalletCredentials(name: name, language: options as String);
       case WalletType.bitcoin:
         return bitcoin!.createBitcoinNewWalletCredentials(name: name);
       case WalletType.litecoin:
         return bitcoin!.createBitcoinNewWalletCredentials(name: name);
       case WalletType.haven:
-        return haven!.createHavenNewWalletCredentials(
-            name: name, language: options as String);
+        return haven!.createHavenNewWalletCredentials(name: name, language: options as String);
       case WalletType.ethereum:
         return ethereum!.createEthereumNewWalletCredentials(name: name);
       case WalletType.nano:
         return nano!.createNanoNewWalletCredentials(name: name);
       default:
-        throw Exception('Unexpected type: ${type.toString()}');;
+        throw Exception('Unexpected type: ${type.toString()}');
+        ;
     }
   }
 

lib/view_model/wallet_restore_view_model.dart

@@ -70,8 +70,7 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
     final password = generateWalletPassword();
     final height = options['height'] as int? ?? 0;
     name = options['name'] as String;
-    DerivationType? derivationType = options["derivationType"] as DerivationType?;
-    String? derivationPath = options["derivationPath"] as String?;
+    DerivationInfo? derivationInfo = options["derivationInfo"] as DerivationInfo?;
 
     if (mode == WalletRestoreMode.seed) {
       final seed = options['seed'] as String;
@@ -84,8 +83,8 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
             name: name,
             mnemonic: seed,
             password: password,
-            derivationType: derivationType,
-            derivationPath: derivationPath,
+            derivationType: derivationInfo?.derivationType,
+            derivationPath: derivationInfo?.derivationPath,
           );
         case WalletType.litecoin:
           return bitcoin!.createBitcoinRestoreWalletFromSeedCredentials(
@@ -101,7 +100,7 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
             name: name,
             mnemonic: seed,
             password: password,
-            derivationType: derivationType,
+            derivationType: derivationInfo?.derivationType,
           );
         default:
           break;
@@ -223,6 +222,8 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
           privateKey: seedKey,
           node: node,
         );
+      case WalletType.litecoin:
+        return [DerivationType.electrum2];
       default:
         break;
     }
@@ -231,6 +232,22 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
     return [DerivationType.def];
   }
 
+  DerivationInfo getDefaultDerivation() {
+    switch (type) {
+      case WalletType.nano:
+        return DerivationInfo(
+          derivationType: DerivationType.nano,
+        );
+      case WalletType.bitcoin:
+      case WalletType.litecoin:
+      default:
+        return DerivationInfo(
+          derivationType: DerivationType.electrum2,
+          derivationPath: "m/0'/1",
+        );
+    }
+  }
+
   @override
   Future<WalletBase> process(WalletCredentials credentials) async {
     if (mode == WalletRestoreMode.keys) {