1.1.1 (#208)

* version bump and 2do

* hint that enabling background notification can improve performance

* address book: add visibility toggle for sending addresses

* refactor

* changelog

* enable native FlutterCryptography

* cache getGenericBox

* move hive operations into EncryptedBox

* 2dos

* sent tab navigator: add jump to end and jump to front

* changelog

* intercept ege case where last recipient can not pay for fees because fees are too large (e.g. fee 0.42, last recipient 0.01)

* add unit tests

* rm unused import

CHANGELOG.md

@@ -1,3 +1,7 @@
+### **1.1.1** (2022-12-06)
+* Address book: allow hiding of sending addresses  
+* Send tab: allow fast forwarding or rewiding to addresses
+
 ### **1.1.0** (2022-12-03)
 * More CSV import fixes
 

assets/translations/en.json

@@ -212,6 +212,7 @@
     "send_enter_address": "Please enter an address",
     "send_enter_amount": "Please enter an amount",
     "send_errors_solve": "Please resolve errors …",
+    "send_errors_cant_pay_fees": "Can not pay for fees. $feesMissing $letter_code are presently missing. Consider removing addresses or reducing their transaction amount.",
     "send_import_csv": "Import from CSV",
     "send_fee": "Fee: -$amount $letter_code",
     "send_invalid_address": "Invalid address",
@@ -305,6 +306,7 @@
     "wallet_send_label_hint_metadata": "Metadata is unencrypted and will be publicly visible on the blockchain.",
     "wallet_scan_appBar_title": "Scanning your imported seed",
     "wallet_scan_notice": "This might take a while. Don't close this screen!",
+    "wallet_scan_notice_bg_notifications": "Enabling background notifications in App Settings can severely improve scanning reliability.",
     "wallet_send": "Send",
     "wallet_transactions": "Transactions",
     "wallets_list": "Your wallets",

lib/exceptions/exceptions.dart

@@ -0,0 +1,4 @@
+class CantPayForFeesException implements Exception {
+  int feesMissing;
+  CantPayForFeesException(this.feesMissing);
+}

lib/main.dart

@@ -1,3 +1,4 @@
+import 'package:cryptography_flutter/cryptography_flutter.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
@@ -123,6 +124,9 @@ void main() async {
   }
 
   if (!kIsWeb) {
+    // Enable Flutter cryptography
+    FlutterCryptography.enable();
+
     //init logger
     await FlutterLogs.initLogs(
       logLevelsEnabled: [

lib/providers/active_wallets.dart

@@ -16,6 +16,7 @@ import 'package:coinslib/src/utils/constants/op.dart';
 import 'package:hex/hex.dart';
 import 'package:peercoin/models/buildresult.dart';
 
+import '../exceptions/exceptions.dart';
 import '../models/available_coins.dart';
 import '../models/coin_wallet.dart';
 import '../tools/app_localizations.dart';
@@ -31,11 +32,10 @@ class ActiveWallets with ChangeNotifier {
   ActiveWallets(this._encryptedBox);
   late String _seedPhrase;
   String _unusedAddress = '';
-  late Box _walletBox;
+  late Box<CoinWallet> _walletBox;
   Box? _vaultBox;
   final Map<String, String> _wifs = {};
-  // ignore: prefer_final_fields
-  Map<String?, CoinWallet?> _specificWalletCache = {};
+  final Map<String?, CoinWallet?> _specificWalletCache = {};
   final Map<String, HDWallet> _hdWalletCache = {};
 
   Future<void> init() async {
@@ -80,7 +80,7 @@ class ActiveWallets with ChangeNotifier {
   }
 
   List<CoinWallet> get activeWalletsValues {
-    return _walletBox.values.toList() as List<CoinWallet>;
+    return _walletBox.values.toList();
   }
 
   List get activeWalletsKeys {
@@ -96,8 +96,7 @@ class ActiveWallets with ChangeNotifier {
   }
 
   Future<void> addWallet(String name, String title, String letterCode) async {
-    var box = await Hive.openBox<CoinWallet>('wallets',
-        encryptionCipher: HiveAesCipher(await _encryptedBox.key as List<int>));
+    var box = await _encryptedBox.getWalletBox();
     await box.put(name, CoinWallet(name, title, letterCode));
     notifyListeners();
   }
@@ -716,6 +715,11 @@ class ActiveWallets with ChangeNotifier {
             'no change needed, tx amount $txAmount, fee $fee, reduced output added for ${recipients.keys.last} ${txAmount - fee}',
           );
           recipients.update(recipients.keys.last, (value) => value - fee);
+          if (recipients.values.last < coin.minimumTxValue) {
+            throw CantPayForFeesException(
+              recipients.values.last * -1,
+            );
+          }
           txAmount = parseTxOutputValue(recipients);
           feesHaveBeenDeductedFromRecipient = true;
         }

lib/providers/encrypted_box.dart

@@ -7,6 +7,7 @@ import 'package:hive/hive.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 
 import '../models/coin_wallet.dart';
+import '../models/server.dart';
 
 class EncryptedBox with ChangeNotifier {
   final Map<String, Box> _cryptoBox = {};
@@ -77,14 +78,23 @@ class EncryptedBox with ChangeNotifier {
   }
 
   Future<Box?> getGenericBox(String name) async {
-    _cryptoBox[name] = await Hive.openBox(
-      name,
+    if (!_cryptoBox.containsKey(name)) {
+      _cryptoBox[name] = await Hive.openBox(
+        name,
+        encryptionCipher: HiveAesCipher(await key as Uint8List),
+      );
+    }
+    return _cryptoBox[name];
+  }
+
+  Future<Box<Server>> getServerBox(String identifier) async {
+    return await Hive.openBox<Server>(
+      'serverBox-$identifier',
       encryptionCipher: HiveAesCipher(await key as Uint8List),
     );
-    return _cryptoBox[name];
   }
 
-  Future<Box> getWalletBox() async {
+  Future<Box<CoinWallet>> getWalletBox() async {
     return await Hive.openBox<CoinWallet>(
       'wallets',
       encryptionCipher: HiveAesCipher(await key as Uint8List),

lib/providers/servers.dart

@@ -16,10 +16,7 @@ class Servers with ChangeNotifier {
 
   Future<void> init(String identifier) async {
     LoggerWrapper.logInfo('Servers', 'init', 'init server provider');
-    _serverBox = await Hive.openBox<Server>(
-      'serverBox-$identifier',
-      encryptionCipher: HiveAesCipher(await _encryptedBox.key as List<int>),
-    );
+    _serverBox = await _encryptedBox.getServerBox(identifier);
 
     final seedServers =
         AvailableCoins.getSpecificCoin(identifier).electrumServers;

lib/screens/wallet/wallet_import_scan.dart

@@ -40,7 +40,9 @@ class _WalletImportScanScreenState extends State<WalletImportScanScreen> {
       appBar: AppBar(
         title: Center(
           child: Text(
-            AppLocalizations.instance.translate('wallet_scan_appBar_title'),
+            AppLocalizations.instance.translate(
+              'wallet_scan_appBar_title',
+            ),
           ),
         ),
       ),
@@ -52,6 +54,24 @@ class _WalletImportScanScreenState extends State<WalletImportScanScreen> {
           Text(
             AppLocalizations.instance.translate('wallet_scan_notice'),
           ),
+          if (_backgroundNotificationsAvailable == false)
+            Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const SizedBox(height: 20),
+                const Divider(),
+                const SizedBox(height: 20),
+                Padding(
+                  padding: const EdgeInsets.symmetric(horizontal: 20),
+                  child: Text(
+                    AppLocalizations.instance.translate(
+                      'wallet_scan_notice_bg_notifications',
+                    ),
+                    textAlign: TextAlign.center,
+                  ),
+                ),
+              ],
+            ),
           const SizedBox(height: 20),
           PeerButton(
             text: AppLocalizations.instance