CAKE-234

ios/Runner.xcodeproj/project.pbxproj

@@ -357,7 +357,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
-				CURRENT_PROJECT_VERSION = 19;
+				CURRENT_PROJECT_VERSION = 20;
 				DEVELOPMENT_TEAM = 32J6BB6VUS;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -498,7 +498,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
-				CURRENT_PROJECT_VERSION = 19;
+				CURRENT_PROJECT_VERSION = 20;
 				DEVELOPMENT_TEAM = 32J6BB6VUS;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -533,7 +533,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
-				CURRENT_PROJECT_VERSION = 19;
+				CURRENT_PROJECT_VERSION = 20;
 				DEVELOPMENT_TEAM = 32J6BB6VUS;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (

lib/bitcoin/bitcoin_transaction_credentials.dart

@@ -1,9 +1,9 @@
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/bitcoin/bitcoin_transaction_priority.dart';
 
 class BitcoinTransactionCredentials {
   BitcoinTransactionCredentials(this.address, this.amount, this.priority);
 
   final String address;
   final String amount;
-  TransactionPriority priority;
+  BitcoinTransactionPriority priority;
 }

lib/bitcoin/bitcoin_transaction_history.dart

@@ -102,8 +102,12 @@ abstract class BitcoinTransactionHistoryBase
   BitcoinTransactionInfo get(String id) => transactions[id];
 
   Future<void> save() async {
+    try {
       final data = json.encode({'height': _height, 'transactions': transactions});
       await writeData(path: path, password: _password, data: data);
+    } catch(e) {
+      print('Error while save bitcoin transaction history: ${e.toString()}');
+    }
   }
 
   @override
@@ -170,6 +174,10 @@ abstract class BitcoinTransactionHistoryBase
   }
 
   void _updateOrInsert(BitcoinTransactionInfo transaction) {
+    if (transaction.id == null) {
+      return;
+    }
+
     if (transactions[transaction.id] == null) {
       transactions[transaction.id] = transaction;
     } else {

lib/bitcoin/bitcoin_transaction_priority.dart

@@ -0,0 +1,29 @@
+import 'package:cake_wallet/entities/transaction_priority.dart';
+
+class BitcoinTransactionPriority extends TransactionPriority {
+  const BitcoinTransactionPriority(this.rate, {String title, int raw})
+      : super(title: title, raw: raw);
+
+  static const List<BitcoinTransactionPriority> all = [slow, medium, fast];
+  static const BitcoinTransactionPriority slow = BitcoinTransactionPriority(11, title: 'Slow', raw: 0);
+  static const BitcoinTransactionPriority medium = BitcoinTransactionPriority(90, title: 'Medium', raw: 1);
+  static const BitcoinTransactionPriority fast = BitcoinTransactionPriority(98, title: 'Fast', raw: 2);
+
+  static BitcoinTransactionPriority deserialize({int raw}) {
+    switch (raw) {
+      case 0:
+        return slow;
+      case 2:
+        return medium;
+      case 3:
+        return fast;
+      default:
+        return null;
+    }
+  }
+
+  final int rate;
+
+  @override
+  String toString() => '$rate sat/byte';
+}

lib/bitcoin/bitcoin_wallet.dart

@@ -2,6 +2,8 @@ import 'dart:async';
 import 'dart:convert';
 import 'package:cake_wallet/bitcoin/address_to_output_script.dart';
 import 'package:cake_wallet/bitcoin/bitcoin_mnemonic.dart';
+import 'package:cake_wallet/bitcoin/bitcoin_transaction_priority.dart';
+import 'package:cake_wallet/entities/transaction_priority.dart';
 import 'package:mobx/mobx.dart';
 import 'package:flutter/foundation.dart';
 import 'package:rxdart/rxdart.dart';
@@ -17,7 +19,6 @@ import 'package:cake_wallet/bitcoin/script_hash.dart';
 import 'package:cake_wallet/bitcoin/utils.dart';
 import 'package:cake_wallet/bitcoin/bitcoin_amount_format.dart';
 import 'package:cake_wallet/entities/sync_status.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
 import 'package:cake_wallet/entities/wallet_info.dart';
 import 'package:cake_wallet/bitcoin/bitcoin_transaction_history.dart';
 import 'package:cake_wallet/bitcoin/bitcoin_address_record.dart';
@@ -53,6 +54,7 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
         _password = password,
         _accountIndex = accountIndex,
         super(walletInfo) {
+    _unspent = [];
     _scripthashesUpdateSubject = {};
   }
 
@@ -116,18 +118,12 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
         walletInfo: walletInfo);
   }
 
-  static int feeAmountForPriority(TransactionPriority priority) {
-    switch (priority) {
-      case TransactionPriority.slow:
-        return 6000;
-      case TransactionPriority.regular:
-        return 22080;
-      case TransactionPriority.fast:
-        return 24000;
-      default:
-        return 0;
-    }
-  }
+  static int feeAmountForPriority(BitcoinTransactionPriority priority,
+          int inputsCount, int outputsCount) =>
+      priority.rate * estimatedTransactionSize(inputsCount, outputsCount);
+
+  static int estimatedTransactionSize(int inputsCount, int outputsCounts) =>
+      inputsCount * 146 + outputsCounts * 33 + 8;
 
   @override
   final BitcoinTransactionHistory transactionHistory;
@@ -136,6 +132,8 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
   final ElectrumClient eclient;
   final String mnemonic;
 
+  List<BitcoinUnspent> _unspent;
+
   @override
   @observable
   String address;
@@ -234,6 +232,7 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
       });
       _subscribeForUpdates();
       await _updateBalance();
+      await _updateUnspent();
       syncStatus = SyncedSyncStatus();
     } catch (e) {
       print(e.toString());
@@ -264,29 +263,22 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
       Object credentials) async {
     final transactionCredentials = credentials as BitcoinTransactionCredentials;
     final inputs = <BitcoinUnspent>[];
-    final fee = feeAmountForPriority(transactionCredentials.priority);
+    final allAmountFee =
+        calculateEstimatedFee(transactionCredentials.priority, null);
+    var fee = 0;
     final amount = transactionCredentials.amount != null
         ? stringDoubleToBitcoinAmount(transactionCredentials.amount)
-        : balance.confirmed - fee;
-    final totalAmount = amount + fee;
+        : balance.confirmed - allAmountFee;
     final txb = bitcoin.TransactionBuilder(network: bitcoin.bitcoin);
     final changeAddress = address;
-    var leftAmount = totalAmount;
+    var leftAmount = amount;
     var totalInputAmount = 0;
 
-    if (totalAmount > balance.confirmed) {
-      throw BitcoinTransactionWrongBalanceException();
+    if (_unspent.isEmpty) {
+      await _updateUnspent();
     }
 
-    final unspent = addresses.map((address) => eclient
-        .getListUnspentWithAddress(address.address)
-        .then((unspent) => unspent
-            .map((unspent) => BitcoinUnspent.fromJSON(address, unspent))));
-
-    for (final unptsFutures in unspent) {
-      final utxs = await unptsFutures;
-
-      for (final utx in utxs) {
+    for (final utx in _unspent) {
       leftAmount = leftAmount - utx.value;
       totalInputAmount += utx.value;
       inputs.add(utx);
@@ -296,20 +288,23 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
       }
     }
 
-      if (leftAmount <= 0) {
-        break;
-      }
-    }
-
     if (inputs.isEmpty) {
       throw BitcoinTransactionNoInputsException();
     }
 
-    if (amount <= 0 || totalInputAmount < amount) {
+    final totalAmount = amount + fee;
+    fee = transactionCredentials.amount != null
+        ? feeAmountForPriority(
+            transactionCredentials.priority, inputs.length, 2)
+        : allAmountFee;
+
+    if (totalAmount > balance.confirmed) {
       throw BitcoinTransactionWrongBalanceException();
     }
 
-    final changeValue = totalInputAmount - amount - fee;
+    if (amount <= 0 || totalInputAmount < amount) {
+      throw BitcoinTransactionWrongBalanceException();
+    }
 
     txb.setVersion(1);
 
@@ -330,6 +325,10 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
     txb.addOutput(
         addressToOutputScript(transactionCredentials.address), amount);
 
+    final estimatedSize = estimatedTransactionSize(inputs.length, 2);
+    final feeAmount = transactionCredentials.priority.rate * estimatedSize;
+    final changeValue = totalInputAmount - amount - feeAmount;
+
     if (changeValue > 0) {
       txb.addOutput(changeAddress, changeValue);
     }
@@ -358,8 +357,30 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
       });
 
   @override
-  double calculateEstimatedFee(TransactionPriority priority) =>
-      bitcoinAmountToDouble(amount: feeAmountForPriority(priority));
+  int calculateEstimatedFee(TransactionPriority priority, int amount) {
+    if (priority is BitcoinTransactionPriority) {
+      int inputsCount = 0;
+
+      if (amount != null) {
+        int totalValue = 0;
+
+        for (final input in _unspent) {
+          if (totalValue >= amount) {
+            break;
+          }
+
+          totalValue += input.value;
+          inputsCount += 1;
+        }
+      } else {
+        inputsCount = _unspent.length;
+      }
+
+      return feeAmountForPriority(priority, inputsCount, 2);
+    }
+
+    return 0;
+  }
 
   @override
   Future<void> save() async {
@@ -380,13 +401,26 @@ abstract class BitcoinWalletBase extends WalletBase<BitcoinBalance> with Store {
     await eclient.close();
   }
 
+  Future<void> _updateUnspent() async {
+    final unspent = await Future.wait(addresses.map((address) => eclient
+        .getListUnspentWithAddress(address.address)
+        .then((unspent) => unspent
+            .map((unspent) => BitcoinUnspent.fromJSON(address, unspent)))));
+    _unspent = unspent.expand((e) => e).toList();
+  }
+
   void _subscribeForUpdates() {
     scriptHashes.forEach((sh) async {
       await _scripthashesUpdateSubject[sh]?.close();
       _scripthashesUpdateSubject[sh] = eclient.scripthashUpdate(sh);
       _scripthashesUpdateSubject[sh].listen((event) async {
+        try {
           await _updateBalance();
+          await _updateUnspent();
           transactionHistory.updateAsync();
+        } catch (e) {
+          print(e.toString());
+        }
       });
     });
   }

lib/bitcoin/electrum.dart

@@ -23,7 +23,8 @@ String jsonrpcparams(List<Object> params) {
 
 String jsonrpc(
     {String method, List<Object> params, int id, double version = 2.0}) =>
-    '{"jsonrpc": "$version", "method": "$method", "id": "$id",  "params": ${json.encode(params)}}\n';
+    '{"jsonrpc": "$version", "method": "$method", "id": "$id",  "params": ${json
+        .encode(params)}}\n';
 
 class SocketTask {
   SocketTask({this.completer, this.isSubscription, this.subject});
@@ -294,8 +295,7 @@ class ElectrumClient {
         params: [scripthash]);
   }
 
-  BehaviorSubject<T> subscribe<T>(
-      {@required String id,
+  BehaviorSubject<T> subscribe<T>({@required String id,
     @required String method,
     List<Object> params = const []}) {
     final subscription = BehaviorSubject<T>();
@@ -306,38 +306,31 @@ class ElectrumClient {
   }
 
   Future<dynamic> call({String method, List<Object> params = const []}) async {
-    await Future<void>.delayed(Duration(milliseconds: 100));
     final completer = Completer<dynamic>();
     _id += 1;
     final id = _id;
-    _regisryTask(id, completer);
-    socket.write(jsonrpc(method: method, id: _id, params: params));
+    _registryTask(id, completer);
+    socket.write(jsonrpc(method: method, id: id, params: params));
 
     return completer.future;
   }
 
-  Future<dynamic> callWithTimeout(
-      {String method,
+  Future<dynamic> callWithTimeout({String method,
     List<Object> params = const [],
     int timeout = 2000}) async {
     final completer = Completer<dynamic>();
     _id += 1;
     final id = _id;
-    _regisryTask(id, completer);
-    socket.write(jsonrpc(method: method, id: _id, params: params));
-
+    _registryTask(id, completer);
+    socket.write(jsonrpc(method: method, id: id, params: params));
     Timer(Duration(milliseconds: timeout), () {
       if (!completer.isCompleted) {
-        completer.completeError(RequestFailedTimeoutException(method, _id));
+        completer.completeError(RequestFailedTimeoutException(method, id));
       }
     });
 
-    return completer.future;
-  }
 
-  void request({String method, List<Object> params = const []}) {
-    _id += 1;
-    socket.write(jsonrpc(method: method, id: _id, params: params));
+    return completer.future;
   }
 
   Future<void> close() async {
@@ -346,7 +339,8 @@ class ElectrumClient {
     onConnectionStatusChange = null;
   }
 
-  void _regisryTask(int id, Completer completer) => _tasks[id.toString()] =
+  void _registryTask(int id, Completer completer) =>
+      _tasks[id.toString()] =
           SocketTask(completer: completer, isSubscription: false);
 
   void _regisrySubscription(String id, BehaviorSubject subject) =>

lib/core/backup_service.dart

@@ -149,8 +149,8 @@ class BackupService {
         PreferencesKey.shouldSaveRecipientAddressKey,
         data[PreferencesKey.shouldSaveRecipientAddressKey] as bool);
     await _sharedPreferences.setInt(
-        PreferencesKey.currentTransactionPriorityKey,
-        data[PreferencesKey.currentTransactionPriorityKey] as int);
+        PreferencesKey.currentTransactionPriorityKeyLegacy,
+        data[PreferencesKey.currentTransactionPriorityKeyLegacy] as int);
     await _sharedPreferences.setBool(
         PreferencesKey.allowBiometricalAuthenticationKey,
         data[PreferencesKey.allowBiometricalAuthenticationKey] as bool);
@@ -257,8 +257,8 @@ class BackupService {
           _sharedPreferences.getBool(PreferencesKey.isDarkThemeLegacy),
       PreferencesKey.currentPinLength:
           _sharedPreferences.getInt(PreferencesKey.currentPinLength),
-      PreferencesKey.currentTransactionPriorityKey: _sharedPreferences
-          .getInt(PreferencesKey.currentTransactionPriorityKey),
+      PreferencesKey.currentTransactionPriorityKeyLegacy: _sharedPreferences
+          .getInt(PreferencesKey.currentTransactionPriorityKeyLegacy),
       PreferencesKey.allowBiometricalAuthenticationKey: _sharedPreferences
           .getBool(PreferencesKey.allowBiometricalAuthenticationKey),
       PreferencesKey.currentBitcoinElectrumSererIdKey: _sharedPreferences

lib/core/wallet_base.dart

@@ -1,16 +1,17 @@
 import 'package:cake_wallet/entities/balance.dart';
+import 'package:cake_wallet/entities/transaction_priority.dart';
 import 'package:flutter/foundation.dart';
 import 'package:cake_wallet/entities/wallet_info.dart';
 import 'package:cake_wallet/core/pending_transaction.dart';
 import 'package:cake_wallet/core/transaction_history.dart';
 import 'package:cake_wallet/entities/currency_for_wallet_type.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 import 'package:cake_wallet/entities/crypto_currency.dart';
 import 'package:cake_wallet/entities/sync_status.dart';
 import 'package:cake_wallet/entities/node.dart';
 import 'package:cake_wallet/entities/wallet_type.dart';
 
-abstract class WalletBase<BalaceType extends Balance> {
+abstract class WalletBase<BalanceType extends Balance> {
   WalletBase(this.walletInfo);
 
   static String idFor(String name, WalletType type) =>
@@ -30,7 +31,7 @@ abstract class WalletBase<BalaceType extends Balance> {
 
   set address(String address);
 
-  BalaceType get balance;
+  BalanceType get balance;
 
   SyncStatus get syncStatus;
 
@@ -48,7 +49,7 @@ abstract class WalletBase<BalaceType extends Balance> {
 
   Future<PendingTransaction> createTransaction(Object credentials);
 
-  double calculateEstimatedFee(TransactionPriority priority);
+  int calculateEstimatedFee(TransactionPriority priority, int amount);
 
   Future<void> save();
 

lib/entities/calculate_estimated_fee.dart

@@ -1,23 +1,23 @@
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 
-double calculateEstimatedFee({TransactionPriority priority}) {
-  if (priority == TransactionPriority.slow) {
+double calculateEstimatedFee({MoneroTransactionPriority priority}) {
+  if (priority == MoneroTransactionPriority.slow) {
     return 0.00002459;
   }
 
-  if (priority == TransactionPriority.regular) {
+  if (priority == MoneroTransactionPriority.regular) {
     return 0.00012305;
   }
 
-  if (priority == TransactionPriority.medium) {
+  if (priority == MoneroTransactionPriority.medium) {
     return 0.00024503;
   }
 
-  if (priority == TransactionPriority.fast) {
+  if (priority == MoneroTransactionPriority.fast) {
     return 0.00061453;
   }
 
-  if (priority == TransactionPriority.fastest) {
+  if (priority == MoneroTransactionPriority.fastest) {
     return 0.0260216;
   }
 

lib/entities/default_settings_migration.dart

@@ -1,4 +1,5 @@
 import 'dart:io' show File, Platform;
+import 'package:cake_wallet/bitcoin/bitcoin_transaction_priority.dart';
 import 'package:cake_wallet/core/generate_wallet_password.dart';
 import 'package:cake_wallet/core/key_service.dart';
 import 'package:cake_wallet/di.dart';
@@ -15,7 +16,7 @@ import 'package:cake_wallet/entities/node.dart';
 import 'package:cake_wallet/entities/balance_display_mode.dart';
 import 'package:cake_wallet/entities/fiat_currency.dart';
 import 'package:cake_wallet/entities/node_list.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 import 'package:cake_wallet/entities/contact.dart';
 import 'package:cake_wallet/entities/fs_migration.dart';
 import 'package:cake_wallet/entities/wallet_info.dart';
@@ -53,8 +54,8 @@ Future defaultSettingsMigration(
               PreferencesKey.currentFiatCurrencyKey,
               FiatCurrency.usd.toString());
           await sharedPreferences.setInt(
-              PreferencesKey.currentTransactionPriorityKey,
-              TransactionPriority.standard.raw);
+              PreferencesKey.currentTransactionPriorityKeyLegacy,
+              MoneroTransactionPriority.standard.raw);
           await sharedPreferences.setInt(
               PreferencesKey.currentBalanceDisplayModeKey,
               BalanceDisplayMode.availableBalance.raw);
@@ -93,6 +94,13 @@ Future defaultSettingsMigration(
         case 9:
           await generateBackupPassword(secureStorage);
           break;
+        case 10:
+          await changeTransactionPriorityAndFeeRateKeys(sharedPreferences);
+          break;
+
+        case 11:
+          await changeDefaultMoneroNode(nodes, sharedPreferences);
+          break;
 
         default:
           break;
@@ -253,3 +261,36 @@ Future<void> generateBackupPassword(FlutterSecureStorage secureStorage) async {
   final password = encrypt.Key.fromSecureRandom(32).base16;
   await secureStorage.write(key: key, value: password);
 }
+
+Future<void> changeTransactionPriorityAndFeeRateKeys(
+    SharedPreferences sharedPreferences) async {
+  final legacyTransactionPriority = sharedPreferences
+      .getInt(PreferencesKey.currentTransactionPriorityKeyLegacy);
+  await sharedPreferences.setInt(
+      PreferencesKey.moneroTransactionPriority, legacyTransactionPriority);
+  await sharedPreferences.setInt(PreferencesKey.bitcoinTransactionPriority,
+      BitcoinTransactionPriority.medium.serialize());
+}
+
+Future<void> changeDefaultMoneroNode(
+    Box<Node> nodeSource, SharedPreferences sharedPreferences) async {
+  const cakeWalletMoneroNodeUriPattern = '.cakewallet.com';
+  const newCakeWalletMoneroUri = 'xmr-node.cakewallet.com:18081';
+  final currentMoneroNodeId = sharedPreferences.getInt(PreferencesKey.currentNodeIdKey);
+  final currentMoneroNode = nodeSource.values.firstWhere((node) => node.key == currentMoneroNodeId);
+  final needToReplaceCurrentMoneroNode = currentMoneroNode.uri.contains(cakeWalletMoneroNodeUriPattern);
+
+  nodeSource.values.forEach((node) async {
+    if (node.type == WalletType.monero && node.uri.contains(cakeWalletMoneroNodeUriPattern)) {
+      await node.delete();
+    }
+  });
+
+  final newCakeWalletNode = Node(uri: newCakeWalletMoneroUri, type: WalletType.monero);
+
+  await nodeSource.add(newCakeWalletNode);
+
+  if (needToReplaceCurrentMoneroNode) {
+    await sharedPreferences.setInt(PreferencesKey.currentNodeIdKey, newCakeWalletNode.key as int);
+  }
+}

lib/entities/monero_transaction_priority.dart

@@ -0,0 +1,74 @@
+import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/wallet_type.dart';
+import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/entities/enumerable_item.dart';
+
+class MoneroTransactionPriority extends TransactionPriority {
+  const MoneroTransactionPriority({String title, int raw})
+      : super(title: title, raw: raw);
+
+  static const all = [
+    MoneroTransactionPriority.slow,
+    MoneroTransactionPriority.regular,
+    MoneroTransactionPriority.medium,
+    MoneroTransactionPriority.fast,
+    MoneroTransactionPriority.fastest
+  ];
+  static const slow = MoneroTransactionPriority(title: 'Slow', raw: 0);
+  static const regular = MoneroTransactionPriority(title: 'Regular', raw: 1);
+  static const medium = MoneroTransactionPriority(title: 'Medium', raw: 2);
+  static const fast = MoneroTransactionPriority(title: 'Fast', raw: 3);
+  static const fastest = MoneroTransactionPriority(title: 'Fastest', raw: 4);
+  static const standard = slow;
+
+
+  static List<MoneroTransactionPriority> forWalletType(WalletType type) {
+    switch (type) {
+      case WalletType.monero:
+        return MoneroTransactionPriority.all;
+      case WalletType.bitcoin:
+        return [
+          MoneroTransactionPriority.slow,
+          MoneroTransactionPriority.regular,
+          MoneroTransactionPriority.fast
+        ];
+      default:
+        return [];
+    }
+  }
+
+  static MoneroTransactionPriority deserialize({int raw}) {
+    switch (raw) {
+      case 0:
+        return slow;
+      case 1:
+        return regular;
+      case 2:
+        return medium;
+      case 3:
+        return fast;
+      case 4:
+        return fastest;
+      default:
+        return null;
+    }
+  }
+
+  @override
+  String toString() {
+    switch (this) {
+      case MoneroTransactionPriority.slow:
+        return S.current.transaction_priority_slow;
+      case MoneroTransactionPriority.regular:
+        return S.current.transaction_priority_regular;
+      case MoneroTransactionPriority.medium:
+        return S.current.transaction_priority_medium;
+      case MoneroTransactionPriority.fast:
+        return S.current.transaction_priority_fast;
+      case MoneroTransactionPriority.fastest:
+        return S.current.transaction_priority_fastest;
+      default:
+        return '';
+    }
+  }
+}

lib/entities/preferences_key.dart

@@ -4,7 +4,7 @@ class PreferencesKey {
   static const currentNodeIdKey = 'current_node_id';
   static const currentBitcoinElectrumSererIdKey = 'current_node_id_btc';
   static const currentFiatCurrencyKey = 'current_fiat_currency';
-  static const currentTransactionPriorityKey = 'current_fee_priority';
+  static const currentTransactionPriorityKeyLegacy = 'current_fee_priority';
   static const currentBalanceDisplayModeKey = 'current_balance_display_mode';
   static const shouldSaveRecipientAddressKey = 'save_recipient_address';
   static const allowBiometricalAuthenticationKey =
@@ -15,4 +15,6 @@ class PreferencesKey {
   static const currentPinLength = 'current_pin_length';
   static const currentLanguageCode = 'language_code';
   static const currentDefaultSettingsMigrationVersion = 'current_default_settings_migration_version';
+  static const moneroTransactionPriority = 'current_fee_priority_monero';
+  static const bitcoinTransactionPriority = 'current_fee_priority_bitcoin';
 }

lib/entities/transaction_priority.dart

@@ -1,73 +1,6 @@
-import 'package:cake_wallet/entities/wallet_type.dart';
-import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/entities/enumerable_item.dart';
 
-class TransactionPriority extends EnumerableItem<int> with Serializable<int> {
-  const TransactionPriority({String title, int raw})
-      : super(title: title, raw: raw);
-
-  static const all = [
-    TransactionPriority.slow,
-    TransactionPriority.regular,
-    TransactionPriority.medium,
-    TransactionPriority.fast,
-    TransactionPriority.fastest
-  ];
-  static const slow = TransactionPriority(title: 'Slow', raw: 0);
-  static const regular = TransactionPriority(title: 'Regular', raw: 1);
-  static const medium = TransactionPriority(title: 'Medium', raw: 2);
-  static const fast = TransactionPriority(title: 'Fast', raw: 3);
-  static const fastest = TransactionPriority(title: 'Fastest', raw: 4);
-  static const standard = slow;
-
-
-  static List<TransactionPriority> forWalletType(WalletType type) {
-    switch (type) {
-      case WalletType.monero:
-        return TransactionPriority.all;
-      case WalletType.bitcoin:
-        return [
-          TransactionPriority.slow,
-          TransactionPriority.regular,
-          TransactionPriority.fast
-        ];
-      default:
-        return [];
-    }
-  }
-
-  static TransactionPriority deserialize({int raw}) {
-    switch (raw) {
-      case 0:
-        return slow;
-      case 1:
-        return regular;
-      case 2:
-        return medium;
-      case 3:
-        return fast;
-      case 4:
-        return fastest;
-      default:
-        return null;
-    }
-  }
-
-  @override
-  String toString() {
-    switch (this) {
-      case TransactionPriority.slow:
-        return S.current.transaction_priority_slow;
-      case TransactionPriority.regular:
-        return S.current.transaction_priority_regular;
-      case TransactionPriority.medium:
-        return S.current.transaction_priority_medium;
-      case TransactionPriority.fast:
-        return S.current.transaction_priority_fast;
-      case TransactionPriority.fastest:
-        return S.current.transaction_priority_fastest;
-      default:
-        return '';
-    }
-  }
+abstract class TransactionPriority extends EnumerableItem<int>
+    with Serializable<int> {
+  const TransactionPriority({String title, int raw}) : super(title: title, raw: raw);
 }

lib/main.dart

@@ -96,7 +96,7 @@ Future<void> main() async {
         exchangeTemplates: exchangeTemplates,
         transactionDescriptions: transactionDescriptions,
         secureStorage: secureStorage,
-        initialMigrationVersion: 9);
+        initialMigrationVersion: 11);
     runApp(App());
   } catch (e) {
     runApp(MaterialApp(
@@ -123,7 +123,7 @@ Future<void> initialSetup(
     @required Box<ExchangeTemplate> exchangeTemplates,
     @required Box<TransactionDescription> transactionDescriptions,
     FlutterSecureStorage secureStorage,
-    int initialMigrationVersion = 9}) async {
+    int initialMigrationVersion = 11}) async {
   await defaultSettingsMigration(
       secureStorage: secureStorage,
       version: initialMigrationVersion,

lib/monero/monero_transaction_creation_credentials.dart

@@ -1,5 +1,5 @@
 import 'package:cake_wallet/entities/transaction_creation_credentials.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 
 class MoneroTransactionCreationCredentials
     extends TransactionCreationCredentials {
@@ -9,5 +9,5 @@ class MoneroTransactionCreationCredentials
   final String address;
   final String paymentId;
   final String amount;
-  final TransactionPriority priority;
+  final MoneroTransactionPriority priority;
 }

lib/monero/monero_wallet.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import 'package:cake_wallet/entities/transaction_priority.dart';
 import 'package:cake_wallet/monero/monero_amount_format.dart';
 import 'package:cake_wallet/monero/monero_transaction_creation_exception.dart';
 import 'package:flutter/foundation.dart';
@@ -21,7 +22,7 @@ import 'package:cake_wallet/core/wallet_base.dart';
 import 'package:cake_wallet/entities/sync_status.dart';
 import 'package:cake_wallet/entities/wallet_info.dart';
 import 'package:cake_wallet/entities/node.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 
 part 'monero_wallet.g.dart';
 
@@ -212,27 +213,22 @@ abstract class MoneroWalletBase extends WalletBase<MoneroBalance> with Store {
   }
 
   @override
-  double calculateEstimatedFee(TransactionPriority priority) {
+  int calculateEstimatedFee(TransactionPriority priority, int amount) {
     // FIXME: hardcoded value;
 
-    if (priority == TransactionPriority.slow) {
-      return 0.00002459;
+    if (priority is MoneroTransactionPriority) {
+      switch (priority) {
+        case MoneroTransactionPriority.slow:
+          return 24590000;
+        case MoneroTransactionPriority.regular:
+          return 123050000;
+        case MoneroTransactionPriority.medium:
+          return 245029999;
+        case MoneroTransactionPriority.fast:
+          return 614530000;
+        case MoneroTransactionPriority.fastest:
+          return 26021600000;
       }
-
-    if (priority == TransactionPriority.regular) {
-      return 0.00012305;
-    }
-
-    if (priority == TransactionPriority.medium) {
-      return 0.00024503;
-    }
-
-    if (priority == TransactionPriority.fast) {
-      return 0.00061453;
-    }
-
-    if (priority == TransactionPriority.fastest) {
-      return 0.0260216;
     }
 
     return 0;

lib/src/screens/send/send_page.dart

@@ -1,9 +1,11 @@
 import 'dart:ui';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 import 'package:cake_wallet/entities/transaction_priority.dart';
 import 'package:cake_wallet/src/widgets/alert_with_two_actions.dart';
 import 'package:cake_wallet/src/widgets/keyboard_done_button.dart';
 import 'package:cake_wallet/src/widgets/picker.dart';
 import 'package:cake_wallet/src/widgets/template_tile.dart';
+import 'package:cake_wallet/view_model/settings/settings_view_model.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -752,7 +754,7 @@ class SendPage extends BasePage {
   }
 
   Future<void> _setTransactionPriority(BuildContext context) async {
-    final items = TransactionPriority.forWalletType(sendViewModel.walletType);
+    final items = priorityForWalletType(sendViewModel.walletType);
     final selectedItem = items.indexOf(sendViewModel.transactionPriority);
     final isShowScrollThumb = items.length > 3;
 

lib/store/settings_store.dart

@@ -1,4 +1,6 @@
+import 'package:cake_wallet/bitcoin/bitcoin_transaction_priority.dart';
 import 'package:cake_wallet/entities/preferences_key.dart';
+import 'package:cake_wallet/entities/transaction_priority.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
 import 'package:cake_wallet/themes/theme_list.dart';
 import 'package:flutter/foundation.dart';
@@ -14,7 +16,7 @@ import 'package:cake_wallet/entities/language_service.dart';
 import 'package:cake_wallet/entities/balance_display_mode.dart';
 import 'package:cake_wallet/entities/fiat_currency.dart';
 import 'package:cake_wallet/entities/node.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 import 'package:cake_wallet/entities/action_list_display_mode.dart';
 
 part 'settings_store.g.dart';
@@ -25,7 +27,6 @@ abstract class SettingsStoreBase with Store {
   SettingsStoreBase(
       {@required SharedPreferences sharedPreferences,
       @required FiatCurrency initialFiatCurrency,
-      @required TransactionPriority initialTransactionPriority,
       @required BalanceDisplayMode initialBalanceDisplayMode,
       @required bool initialSaveRecipientAddress,
       @required bool initialAllowBiometricalAuthentication,
@@ -35,15 +36,20 @@ abstract class SettingsStoreBase with Store {
       // @required String initialCurrentLocale,
       @required this.appVersion,
       @required Map<WalletType, Node> nodes,
+      @required TransactionPriority initialBitcoinTransactionPriority,
+      @required TransactionPriority initialMoneroTransactionPriority,
       this.actionlistDisplayMode}) {
     fiatCurrency = initialFiatCurrency;
-    transactionPriority = initialTransactionPriority;
     balanceDisplayMode = initialBalanceDisplayMode;
     shouldSaveRecipientAddress = initialSaveRecipientAddress;
     allowBiometricalAuthentication = initialAllowBiometricalAuthentication;
     currentTheme = initialTheme;
     pinCodeLength = initialPinLength;
     languageCode = initialLanguageCode;
+    priority = ObservableMap<WalletType, TransactionPriority>.of({
+      WalletType.monero: initialMoneroTransactionPriority,
+      WalletType.bitcoin: initialBitcoinTransactionPriority
+    });
     this.nodes = ObservableMap<WalletType, Node>.of(nodes);
     _sharedPreferences = sharedPreferences;
 
@@ -52,11 +58,13 @@ abstract class SettingsStoreBase with Store {
         (FiatCurrency fiatCurrency) => sharedPreferences.setString(
             PreferencesKey.currentFiatCurrencyKey, fiatCurrency.serialize()));
 
-    reaction(
-        (_) => transactionPriority,
-        (TransactionPriority priority) => sharedPreferences.setInt(
-            PreferencesKey.currentTransactionPriorityKey,
-            priority.serialize()));
+    priority.observe((change) {
+      final key = change.key == WalletType.monero
+          ? PreferencesKey.moneroTransactionPriority
+          : PreferencesKey.bitcoinTransactionPriority;
+
+      sharedPreferences.setInt(key, change.newValue.serialize());
+    });
 
     reaction(
         (_) => shouldSaveRecipientAddress,
@@ -104,9 +112,6 @@ abstract class SettingsStoreBase with Store {
   @observable
   ObservableList<ActionListDisplayMode> actionlistDisplayMode;
 
-  @observable
-  TransactionPriority transactionPriority;
-
   @observable
   BalanceDisplayMode balanceDisplayMode;
 
@@ -128,6 +133,9 @@ abstract class SettingsStoreBase with Store {
   @observable
   String languageCode;
 
+  @observable
+  ObservableMap<WalletType, TransactionPriority> priority;
+
   String appVersion;
 
   SharedPreferences _sharedPreferences;
@@ -139,16 +147,28 @@ abstract class SettingsStoreBase with Store {
   static Future<SettingsStore> load(
       {@required Box<Node> nodeSource,
       FiatCurrency initialFiatCurrency = FiatCurrency.usd,
-      TransactionPriority initialTransactionPriority = TransactionPriority.slow,
+      MoneroTransactionPriority initialMoneroTransactionPriority =
+          MoneroTransactionPriority.slow,
+      BitcoinTransactionPriority initialBitcoinTransactionPriority =
+          BitcoinTransactionPriority.medium,
       BalanceDisplayMode initialBalanceDisplayMode =
           BalanceDisplayMode.availableBalance}) async {
     final sharedPreferences = await getIt.getAsync<SharedPreferences>();
     final currentFiatCurrency = FiatCurrency(
         symbol:
             sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey));
-    final currentTransactionPriority = TransactionPriority.deserialize(
+    final savedMoneroTransactionPriority =
+        MoneroTransactionPriority.deserialize(
             raw: sharedPreferences
-            .getInt(PreferencesKey.currentTransactionPriorityKey));
+                .getInt(PreferencesKey.moneroTransactionPriority));
+    final savedBitcoinTransactionPriority =
+        BitcoinTransactionPriority.deserialize(
+            raw: sharedPreferences
+                .getInt(PreferencesKey.bitcoinTransactionPriority));
+    final moneroTransactionPriority =
+        savedMoneroTransactionPriority ?? initialMoneroTransactionPriority;
+    final bitcoinTransactionPriority =
+        savedBitcoinTransactionPriority ?? initialBitcoinTransactionPriority;
     final currentBalanceDisplayMode = BalanceDisplayMode.deserialize(
         raw: sharedPreferences
             .getInt(PreferencesKey.currentBalanceDisplayModeKey));
@@ -193,30 +213,36 @@ abstract class SettingsStoreBase with Store {
         },
         appVersion: packageInfo.version,
         initialFiatCurrency: currentFiatCurrency,
-        initialTransactionPriority: currentTransactionPriority,
         initialBalanceDisplayMode: currentBalanceDisplayMode,
         initialSaveRecipientAddress: shouldSaveRecipientAddress,
         initialAllowBiometricalAuthentication: allowBiometricalAuthentication,
         initialTheme: savedTheme,
         actionlistDisplayMode: actionListDisplayMode,
         initialPinLength: pinLength,
-        initialLanguageCode: savedLanguageCode);
+        initialLanguageCode: savedLanguageCode,
+        initialMoneroTransactionPriority: moneroTransactionPriority,
+        initialBitcoinTransactionPriority: bitcoinTransactionPriority);
   }
 
   Future<void> reload(
       {@required Box<Node> nodeSource,
       FiatCurrency initialFiatCurrency = FiatCurrency.usd,
-      TransactionPriority initialTransactionPriority = TransactionPriority.slow,
+      MoneroTransactionPriority initialMoneroTransactionPriority =
+          MoneroTransactionPriority.slow,
+      BitcoinTransactionPriority initialBitcoinTransactionPriority =
+          BitcoinTransactionPriority.medium,
       BalanceDisplayMode initialBalanceDisplayMode =
           BalanceDisplayMode.availableBalance}) async {
     final settings = await SettingsStoreBase.load(
         nodeSource: nodeSource,
         initialBalanceDisplayMode: initialBalanceDisplayMode,
         initialFiatCurrency: initialFiatCurrency,
-        initialTransactionPriority: initialTransactionPriority);
+        initialMoneroTransactionPriority: initialMoneroTransactionPriority,
+        initialBitcoinTransactionPriority: initialBitcoinTransactionPriority);
     fiatCurrency = settings.fiatCurrency;
     actionlistDisplayMode = settings.actionlistDisplayMode;
-    transactionPriority = settings.transactionPriority;
+    priority[WalletType.monero] = initialMoneroTransactionPriority;
+    priority[WalletType.bitcoin] = initialBitcoinTransactionPriority;
     balanceDisplayMode = settings.balanceDisplayMode;
     shouldSaveRecipientAddress = settings.shouldSaveRecipientAddress;
     allowBiometricalAuthentication = settings.allowBiometricalAuthentication;

lib/view_model/exchange/exchange_view_model.dart

@@ -1,4 +1,5 @@
 import 'package:cake_wallet/bitcoin/bitcoin_amount_format.dart';
+import 'package:cake_wallet/bitcoin/bitcoin_transaction_priority.dart';
 import 'package:cake_wallet/bitcoin/bitcoin_wallet.dart';
 import 'package:cake_wallet/core/wallet_base.dart';
 import 'package:cake_wallet/entities/crypto_currency.dart';
@@ -302,8 +303,8 @@ abstract class ExchangeViewModelBase with Store {
   void calculateDepositAllAmount() {
     if (wallet is BitcoinWallet) {
       final availableBalance = wallet.balance.available;
-      final fee = BitcoinWalletBase.feeAmountForPriority(
-          _settingsStore.transactionPriority);
+      final priority = _settingsStore.priority[wallet.type] as BitcoinTransactionPriority;
+      final fee = wallet.calculateEstimatedFee(priority, null);
 
       if (availableBalance < fee || availableBalance == 0) {
         return;

lib/view_model/send/send_view_model.dart

@@ -1,6 +1,11 @@
+import 'package:cake_wallet/bitcoin/bitcoin_amount_format.dart';
+import 'package:cake_wallet/bitcoin/bitcoin_transaction_priority.dart';
 import 'package:cake_wallet/entities/balance_display_mode.dart';
 import 'package:cake_wallet/entities/calculate_fiat_amount_raw.dart';
 import 'package:cake_wallet/entities/transaction_description.dart';
+import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/monero/monero_amount_format.dart';
+import 'package:cake_wallet/view_model/settings/settings_view_model.dart';
 import 'package:hive/hive.dart';
 import 'package:intl/intl.dart';
 import 'package:mobx/mobx.dart';
@@ -21,7 +26,7 @@ import 'package:cake_wallet/monero/monero_transaction_creation_credentials.dart'
 import 'package:cake_wallet/entities/sync_status.dart';
 import 'package:cake_wallet/entities/crypto_currency.dart';
 import 'package:cake_wallet/entities/fiat_currency.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 import 'package:cake_wallet/entities/calculate_fiat_amount.dart';
 import 'package:cake_wallet/entities/wallet_type.dart';
 import 'package:cake_wallet/store/dashboard/fiat_conversion_store.dart';
@@ -40,11 +45,11 @@ abstract class SendViewModelBase with Store {
         _cryptoNumberFormat = NumberFormat(),
         note = '',
         sendAll = false {
-    final _priority = _settingsStore.transactionPriority;
+    final priority = _settingsStore.priority[_wallet.type];
+    final priorities = priorityForWalletType(_wallet.type);
 
-    if (!TransactionPriority.forWalletType(walletType).contains(_priority)) {
-      _settingsStore.transactionPriority =
-          TransactionPriority.forWalletType(walletType).first;
+    if (!priorityForWalletType(_wallet.type).contains(priority)) {
+      _settingsStore.priority[_wallet.type] = priorities.first;
     }
 
     _setCryptoNumMaximumFractionDigits();
@@ -69,8 +74,39 @@ abstract class SendViewModelBase with Store {
   bool sendAll;
 
   @computed
-  double get estimatedFee =>
-      _wallet.calculateEstimatedFee(_settingsStore.transactionPriority);
+  double get estimatedFee {
+    int amount;
+
+    if (cryptoAmount?.isNotEmpty ?? false) {
+      int _amount = 0;
+      switch (walletType) {
+        case WalletType.monero:
+          _amount = moneroParseAmount(amount: cryptoAmount);
+          break;
+        case WalletType.bitcoin:
+          _amount = stringDoubleToBitcoinAmount(cryptoAmount);
+          break;
+        default:
+          break;
+      }
+
+      if (_amount > 0) {
+        amount = _amount;
+      }
+    }
+
+    final fee = _wallet.calculateEstimatedFee(_settingsStore.priority[_wallet.type], amount);
+
+    if (_wallet is BitcoinWallet) {
+      return bitcoinAmountToDouble(amount: fee);
+    }
+
+    if (_wallet is MoneroWallet) {
+      return moneroAmountToDouble(amount: fee);
+    }
+
+    return 0;
+  }
 
   @computed
   String get estimatedFeeFiatAmount {
@@ -119,7 +155,7 @@ abstract class SendViewModelBase with Store {
   FiatCurrency get fiat => _settingsStore.fiatCurrency;
 
   TransactionPriority get transactionPriority =>
-      _settingsStore.transactionPriority;
+      _settingsStore.priority[_wallet.type];
 
   CryptoCurrency get currency => _wallet.currency;
 
@@ -213,7 +249,7 @@ abstract class SendViewModelBase with Store {
 
   @action
   void setTransactionPriority(TransactionPriority priority) =>
-      _settingsStore.transactionPriority = priority;
+      _settingsStore.priority[_wallet.type] = priority;
 
   Future<OpenaliasRecord> decodeOpenaliasRecord(String name) async {
     final record = await OpenaliasRecord.fetchAddressAndName(
@@ -257,16 +293,17 @@ abstract class SendViewModelBase with Store {
     switch (_wallet.type) {
       case WalletType.bitcoin:
         final amount = !sendAll ? _amount : null;
+        final priority = _settingsStore.priority[_wallet.type];
 
-        return BitcoinTransactionCredentials(
-            address, amount, _settingsStore.transactionPriority);
+        return BitcoinTransactionCredentials(address, amount, priority as BitcoinTransactionPriority);
       case WalletType.monero:
         final amount = !sendAll ? _amount : null;
+        final priority = _settingsStore.priority[_wallet.type];
 
         return MoneroTransactionCreationCredentials(
             address: address,
             paymentId: '',
-            priority: _settingsStore.transactionPriority,
+            priority: priority as MoneroTransactionPriority,
             amount: amount);
       default:
         return null;

lib/view_model/settings/settings_view_model.dart

@@ -1,4 +1,6 @@
+import 'package:cake_wallet/bitcoin/bitcoin_transaction_priority.dart';
 import 'package:cake_wallet/entities/balance.dart';
+import 'package:cake_wallet/entities/transaction_priority.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
 import 'package:cake_wallet/themes/theme_list.dart';
 import 'package:cake_wallet/src/screens/pin_code/pin_code_widget.dart';
@@ -14,7 +16,7 @@ import 'package:cake_wallet/entities/wallet_type.dart';
 import 'package:cake_wallet/entities/balance_display_mode.dart';
 import 'package:cake_wallet/entities/fiat_currency.dart';
 import 'package:cake_wallet/entities/node.dart';
-import 'package:cake_wallet/entities/transaction_priority.dart';
+import 'package:cake_wallet/entities/monero_transaction_priority.dart';
 import 'package:cake_wallet/entities/action_list_display_mode.dart';
 import 'package:cake_wallet/view_model/settings/version_list_item.dart';
 import 'package:cake_wallet/view_model/settings/link_list_item.dart';
@@ -28,6 +30,17 @@ part 'settings_view_model.g.dart';
 
 class SettingsViewModel = SettingsViewModelBase with _$SettingsViewModel;
 
+List<TransactionPriority> priorityForWalletType(WalletType type) {
+  switch (type) {
+    case WalletType.monero:
+      return MoneroTransactionPriority.all;
+    case WalletType.bitcoin:
+      return BitcoinTransactionPriority.all;
+    default:
+      return [];
+  }
+}
+
 abstract class SettingsViewModelBase with Store {
   SettingsViewModelBase(this._settingsStore, WalletBase<Balance> wallet)
       : itemHeaders = {},
@@ -37,11 +50,11 @@ abstract class SettingsViewModelBase with Store {
     PackageInfo.fromPlatform().then(
         (PackageInfo packageInfo) => currentVersion = packageInfo.version);
 
-    final _priority = _settingsStore.transactionPriority;
+    final priority = _settingsStore.priority[wallet.type];
+    final priorities = priorityForWalletType(wallet.type);
 
-    if (!TransactionPriority.forWalletType(_walletType).contains(_priority)) {
-      _settingsStore.transactionPriority =
-          TransactionPriority.forWalletType(_walletType).first;
+    if (!priorities.contains(priority)) {
+      _settingsStore.priority[wallet.type] = priorities.first;
     }
 
     sections = [
@@ -60,10 +73,10 @@ abstract class SettingsViewModelBase with Store {
                 setFiatCurrency(currency)),
         PickerListItem(
             title: S.current.settings_fee_priority,
-            items: TransactionPriority.forWalletType(wallet.type),
+            items: priorityForWalletType(wallet.type),
             selectedItem: () => transactionPriority,
             onItemSelected: (TransactionPriority priority) =>
-                _settingsStore.transactionPriority = priority),
+                _settingsStore.priority[wallet.type] = priority),
         SwitcherListItem(
             title: S.current.settings_save_recipient_address,
             value: () => shouldSaveRecipientAddress,
@@ -182,7 +195,7 @@ abstract class SettingsViewModelBase with Store {
 
   @computed
   TransactionPriority get transactionPriority =>
-      _settingsStore.transactionPriority;
+      _settingsStore.priority[_walletType];
 
   @computed
   BalanceDisplayMode get balanceDisplayMode =>