Bug missing polyseed (#1214)

* Move file.dart

* Add seedFallback for missing polyseeds

* Remove unused dependency of cw_bitcoin

* Minor fix MacOS

* Add more blockheight-date matching

* Scan only last 2 days for new Polyseed wallets

cw_bitcoin/lib/electrum_transaction_history.dart

@@ -1,10 +1,11 @@
 import 'dart:convert';
+
+import 'package:cw_bitcoin/electrum_transaction_info.dart';
 import 'package:cw_core/pathForWallet.dart';
+import 'package:cw_core/transaction_history.dart';
+import 'package:cw_core/utils/file.dart';
 import 'package:cw_core/wallet_info.dart';
 import 'package:mobx/mobx.dart';
-import 'package:cw_core/transaction_history.dart';
-import 'package:cw_bitcoin/file.dart';
-import 'package:cw_bitcoin/electrum_transaction_info.dart';
 
 part 'electrum_transaction_history.g.dart';
 

cw_bitcoin/lib/electrum_wallet.dart

@@ -18,7 +18,6 @@ import 'package:cw_bitcoin/electrum_balance.dart';
 import 'package:cw_bitcoin/electrum_transaction_history.dart';
 import 'package:cw_bitcoin/electrum_transaction_info.dart';
 import 'package:cw_bitcoin/electrum_wallet_addresses.dart';
-import 'package:cw_bitcoin/file.dart';
 import 'package:cw_bitcoin/pending_bitcoin_transaction.dart';
 import 'package:cw_bitcoin/script_hash.dart';
 import 'package:cw_bitcoin/utils.dart';
@@ -30,6 +29,7 @@ import 'package:cw_core/sync_status.dart';
 import 'package:cw_core/transaction_direction.dart';
 import 'package:cw_core/transaction_priority.dart';
 import 'package:cw_core/unspent_coins_info.dart';
+import 'package:cw_core/utils/file.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:cw_core/wallet_info.dart';
 import 'package:flutter/foundation.dart';

cw_bitcoin/lib/electrum_wallet_snapshot.dart

@@ -1,8 +1,8 @@
 import 'dart:convert';
 import 'package:cw_bitcoin/bitcoin_address_record.dart';
 import 'package:cw_bitcoin/electrum_balance.dart';
-import 'package:cw_bitcoin/file.dart';
 import 'package:cw_core/pathForWallet.dart';
+import 'package:cw_core/utils/file.dart';
 import 'package:cw_core/wallet_type.dart';
 
 class ElectrumWallletSnapshot {

cw_bitcoin/pubspec.yaml

@@ -30,7 +30,6 @@ dependencies:
   rxdart: ^0.27.5
   unorm_dart: ^0.2.0
   cryptography: ^2.0.5
-  encrypt: ^5.0.1
 
 dev_dependencies:
   flutter_test:

cw_core/lib/get_height_by_date.dart

@@ -118,7 +118,10 @@ final dates = {
   "2023-6": 2898234,
   "2023-7": 2919771,
   "2023-8": 2942045,
-  "2023-9": 2964280
+  "2023-9": 2964280,
+  "2023-10": 2985937,
+  "2023-11": 3008178,
+  "2023-12": 3029759
 };
 
 int getMoneroHeigthByDate({required DateTime date}) {

cw_core/lib/utils/file.dart

@@ -2,17 +2,8 @@ import 'dart:io';
 import 'package:cw_core/key.dart';
 import 'package:encrypt/encrypt.dart' as encrypt;
 
-Future<void> write(
-    {required String path,
-    required String password,
-    required String data}) async {
-  final keys = extractKeys(password);
-  final key = encrypt.Key.fromBase64(keys.first);
-  final iv = encrypt.IV.fromBase64(keys.last);
-  final encrypted = await encode(key: key, iv: iv, data: data);
-  final f = File(path);
-  f.writeAsStringSync(encrypted);
-}
+Future<void> write({required String path, required String password, required String data}) async =>
+    writeData(path: path, password: password, data: data);
 
 Future<void> writeData(
     {required String path,

cw_monero/ios/Classes/monero_api.cpp

@@ -385,6 +385,9 @@ extern "C"
             (uint64_t)restoreHeight,
             std::string(spendKey));
 
+        // Cache Raw to support Polyseed
+        wallet->setCacheAttribute("cakewallet.seed", std::string(seed));
+
         int status;
         std::string errorString;
 
@@ -396,9 +399,6 @@ extern "C"
             return false;
         }
 
-        // Cache Raw to support Polyseed
-        wallet->setCacheAttribute("cakewallet.seed", std::string(seed));
-
         change_current_wallet(wallet);
         return true;
     }

cw_monero/lib/monero_wallet.dart

@@ -97,7 +97,8 @@ abstract class MoneroWalletBase
   ObservableMap<CryptoCurrency, MoneroBalance> balance;
 
   @override
-  String get seed => monero_wallet.getSeed();
+  String get seed => _seed;
+  String _seed = monero_wallet.getSeed();
 
   @override
   MoneroWalletKeys get keys => MoneroWalletKeys(
@@ -113,7 +114,11 @@ abstract class MoneroWalletBase
   Timer? _autoSaveTimer;
   List<MoneroUnspent> unspentCoins;
 
-  Future<void> init() async {
+  Future<void> init({String seedFallback = ""}) async {
+    if (_seed.isEmpty) {
+      _seed = seedFallback;
+    }
+
     await walletAddresses.init();
     balance = ObservableMap<CryptoCurrency, MoneroBalance>.of(<CryptoCurrency, MoneroBalance>{
       currency: MoneroBalance(

cw_monero/lib/monero_wallet_service.dart

@@ -2,6 +2,7 @@ import 'dart:io';
 import 'package:cw_core/monero_wallet_utils.dart';
 import 'package:cw_core/pathForWallet.dart';
 import 'package:cw_core/unspent_coins_info.dart';
+import 'package:cw_core/utils/file.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:cw_core/wallet_credentials.dart';
 import 'package:cw_core/wallet_info.dart';
@@ -77,8 +78,12 @@ class MoneroWalletService extends WalletService<
         final polyseed = Polyseed.create();
         final lang = PolyseedLang.getByEnglishName(credentials.language);
 
+        final heightOverride =
+            getMoneroHeigthByDate(date: DateTime.now().subtract(Duration(days: 2)));
+
         return _restoreFromPolyseed(
-            path, credentials.password!, polyseed, credentials.walletInfo!, lang);
+            path, credentials.password!, polyseed, credentials.walletInfo!, lang,
+            overrideHeight: heightOverride);
       }
 
       await monero_wallet_manager.createWallet(
@@ -129,7 +134,12 @@ class MoneroWalletService extends WalletService<
         return openWallet(name, password);
       }
 
+      if (wallet.seed.isEmpty) {
+        final seedFallback = await _getSeedBackup(path, password);
+        await wallet.init(seedFallback: seedFallback);
+      } else {
         await wallet.init();
+      }
 
       return wallet;
     } catch (e) {
@@ -268,10 +278,11 @@ class MoneroWalletService extends WalletService<
 
   Future<MoneroWallet> _restoreFromPolyseed(String path, String password, Polyseed polyseed,
       WalletInfo walletInfo, PolyseedLang lang,
-      {PolyseedCoin coin = PolyseedCoin.POLYSEED_MONERO}) async {
-    final height = getMoneroHeigthByDate(
+      {PolyseedCoin coin = PolyseedCoin.POLYSEED_MONERO, int? overrideHeight}) async {
+    final height = overrideHeight ?? getMoneroHeigthByDate(
         date: DateTime.fromMillisecondsSinceEpoch(polyseed.birthday * 1000));
     final spendKey = keyToHexString(polyseed.generateKey(coin, 32));
+    final seed = polyseed.encode(lang, coin);
 
     walletInfo.isRecovery = true;
     walletInfo.restoreHeight = height;
@@ -279,10 +290,13 @@ class MoneroWalletService extends WalletService<
     await monero_wallet_manager.restoreFromSpendKey(
         path: path,
         password: password,
-        seed: polyseed.encode(lang, coin),
+        seed: seed,
         language: lang.nameEnglish,
         restoreHeight: height,
         spendKey: spendKey);
+
+    await writeData(path: "$path.seed", password: password, data: seed);
+
     final wallet = MoneroWallet(
         walletInfo: walletInfo, unspentCoinsInfo: unspentCoinsInfoSource);
     await wallet.init();
@@ -290,6 +304,13 @@ class MoneroWalletService extends WalletService<
     return wallet;
   }
 
+  Future<String> _getSeedBackup(String path, String password) async {
+    final seedFilePath = "$path.seed";
+    final seedFile = File(seedFilePath);
+    if (!seedFile.existsSync()) return "";
+    return read(path: seedFilePath, password: password);
+  }
+
   Future<void> repairOldAndroidWallet(String name) async {
     try {
       if (!Platform.isAndroid) {

cw_monero/macos/Classes/monero_api.cpp

@@ -385,6 +385,9 @@ extern "C"
             (uint64_t)restoreHeight,
             std::string(spendKey));
 
+        // Cache Raw to support Polyseed
+        wallet->setCacheAttribute("cakewallet.seed", std::string(seed));
+
         int status;
         std::string errorString;
 
@@ -396,9 +399,6 @@ extern "C"
             return false;
         }
 
-        // Cache Raw to support Polyseed
-        wallet->setCacheAttribute("cakewallet.seed", std::string(seed));
-
         change_current_wallet(wallet);
         return true;
     }