mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-12-24 20:49:28 +00:00
26fe28891d
* monero wallet backup changes * [skipci] updates * monero fixes * start work for bitcoin/eth * cleanup * [skipci] more cleanup * add all other coins * merge fixes * add corrupted test * build for testing * actually be able to test monero * review fixes * more review fixes
773 lines
25 KiB
Dart
773 lines
25 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'dart:math';
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import 'package:bitcoin_flutter/bitcoin_flutter.dart' as bitcoin;
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import 'package:collection/collection.dart';
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import 'package:cw_bitcoin/address_to_output_script.dart';
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import 'package:cw_bitcoin/bitcoin_address_record.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_credentials.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_no_inputs_exception.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_priority.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_wrong_balance_exception.dart';
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import 'package:cw_bitcoin/bitcoin_unspent.dart';
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import 'package:cw_bitcoin/bitcoin_wallet_keys.dart';
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import 'package:cw_bitcoin/electrum.dart';
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import 'package:cw_bitcoin/electrum_balance.dart';
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import 'package:cw_bitcoin/electrum_transaction_history.dart';
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import 'package:cw_bitcoin/electrum_transaction_info.dart';
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import 'package:cw_bitcoin/electrum_wallet_addresses.dart';
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import 'package:cw_bitcoin/pending_bitcoin_transaction.dart';
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import 'package:cw_bitcoin/script_hash.dart';
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import 'package:cw_bitcoin/utils.dart';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cw_core/node.dart';
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import 'package:cw_core/pathForWallet.dart';
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import 'package:cw_core/pending_transaction.dart';
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import 'package:cw_core/sync_status.dart';
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import 'package:cw_core/transaction_direction.dart';
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import 'package:cw_core/transaction_priority.dart';
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import 'package:cw_core/unspent_coins_info.dart';
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import 'package:cw_core/utils/file.dart';
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import 'package:cw_core/wallet_base.dart';
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import 'package:cw_core/wallet_info.dart';
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import 'package:flutter/foundation.dart';
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import 'package:hex/hex.dart';
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import 'package:hive/hive.dart';
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import 'package:mobx/mobx.dart';
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import 'package:rxdart/subjects.dart';
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part 'electrum_wallet.g.dart';
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class ElectrumWallet = ElectrumWalletBase with _$ElectrumWallet;
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abstract class ElectrumWalletBase
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extends WalletBase<ElectrumBalance, ElectrumTransactionHistory, ElectrumTransactionInfo>
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with Store {
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ElectrumWalletBase(
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{required String password,
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required WalletInfo walletInfo,
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required Box<UnspentCoinsInfo> unspentCoinsInfo,
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required this.networkType,
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required this.mnemonic,
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required Uint8List seedBytes,
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List<BitcoinAddressRecord>? initialAddresses,
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ElectrumClient? electrumClient,
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ElectrumBalance? initialBalance,
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CryptoCurrency? currency})
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: hd = currency == CryptoCurrency.bch
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? bitcoinCashHDWallet(seedBytes)
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: bitcoin.HDWallet.fromSeed(seedBytes, network: networkType).derivePath("m/0'/0"),
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syncStatus = NotConnectedSyncStatus(),
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_password = password,
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_feeRates = <int>[],
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_isTransactionUpdating = false,
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isEnabledAutoGenerateSubaddress = true,
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unspentCoins = [],
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_scripthashesUpdateSubject = {},
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balance = ObservableMap<CryptoCurrency, ElectrumBalance>.of(currency != null
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? {
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currency:
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initialBalance ?? const ElectrumBalance(confirmed: 0, unconfirmed: 0, frozen: 0)
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}
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: {}),
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this.unspentCoinsInfo = unspentCoinsInfo,
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super(walletInfo) {
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this.electrumClient = electrumClient ?? ElectrumClient();
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this.walletInfo = walletInfo;
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transactionHistory = ElectrumTransactionHistory(walletInfo: walletInfo, password: password);
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}
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static bitcoin.HDWallet bitcoinCashHDWallet(Uint8List seedBytes) =>
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bitcoin.HDWallet.fromSeed(seedBytes).derivePath("m/44'/145'/0'/0");
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static int estimatedTransactionSize(int inputsCount, int outputsCounts) =>
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inputsCount * 68 + outputsCounts * 34 + 10;
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final bitcoin.HDWallet hd;
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final String mnemonic;
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@override
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@observable
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bool isEnabledAutoGenerateSubaddress;
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late ElectrumClient electrumClient;
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Box<UnspentCoinsInfo> unspentCoinsInfo;
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@override
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late ElectrumWalletAddresses walletAddresses;
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@override
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@observable
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late ObservableMap<CryptoCurrency, ElectrumBalance> balance;
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@override
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@observable
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SyncStatus syncStatus;
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List<String> get scriptHashes => walletAddresses.addresses
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.map((addr) => scriptHash(addr.address, networkType: networkType))
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.toList();
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List<String> get publicScriptHashes => walletAddresses.addresses
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.where((addr) => !addr.isHidden)
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.map((addr) => scriptHash(addr.address, networkType: networkType))
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.toList();
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String get xpub => hd.base58!;
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@override
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String get seed => mnemonic;
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bitcoin.NetworkType networkType;
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@override
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BitcoinWalletKeys get keys =>
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BitcoinWalletKeys(wif: hd.wif!, privateKey: hd.privKey!, publicKey: hd.pubKey!);
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String _password;
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List<BitcoinUnspent> unspentCoins;
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List<int> _feeRates;
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Map<String, BehaviorSubject<Object>?> _scripthashesUpdateSubject;
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bool _isTransactionUpdating;
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void Function(FlutterErrorDetails)? _onError;
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bool torOnly = false;
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Future<void> init() async {
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await walletAddresses.init();
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await transactionHistory.init();
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await save();
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}
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@action
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@override
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Future<void> startSync() async {
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try {
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syncStatus = AttemptingSyncStatus();
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await walletAddresses.discoverAddresses();
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await updateTransactions();
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_subscribeForUpdates();
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await updateUnspent();
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await updateBalance();
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_feeRates = await electrumClient.feeRates();
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Timer.periodic(
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const Duration(minutes: 1), (timer) async => _feeRates = await electrumClient.feeRates());
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syncStatus = SyncedSyncStatus();
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} catch (e, stacktrace) {
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print(stacktrace);
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print(e.toString());
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syncStatus = FailedSyncStatus();
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}
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}
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void setTorOnly(bool value) {
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torOnly = value;
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}
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@action
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@override
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Future<void> connectToNode({required Node node}) async {
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try {
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// we can't connect over tor in this wallet type (yet):
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if (torOnly) {
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syncStatus = FailedSyncStatus();
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return;
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}
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syncStatus = ConnectingSyncStatus();
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await electrumClient.connectToUri(node.uri);
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electrumClient.onConnectionStatusChange = (bool isConnected) {
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if (!isConnected) {
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syncStatus = LostConnectionSyncStatus();
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}
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};
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syncStatus = ConnectedSyncStatus();
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} catch (e) {
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print(e.toString());
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syncStatus = FailedSyncStatus();
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}
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}
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@override
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Future<PendingTransaction> createTransaction(Object credentials) async {
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const minAmount = 546;
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final transactionCredentials = credentials as BitcoinTransactionCredentials;
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final inputs = <BitcoinUnspent>[];
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final outputs = transactionCredentials.outputs;
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final hasMultiDestination = outputs.length > 1;
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var allInputsAmount = 0;
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if (unspentCoins.isEmpty) {
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await updateUnspent();
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}
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for (final utx in unspentCoins) {
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if (utx.isSending) {
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allInputsAmount += utx.value;
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inputs.add(utx);
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}
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}
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if (inputs.isEmpty) {
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throw BitcoinTransactionNoInputsException();
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}
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final allAmountFee = transactionCredentials.feeRate != null
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? feeAmountWithFeeRate(transactionCredentials.feeRate!, inputs.length, outputs.length)
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: feeAmountForPriority(transactionCredentials.priority!, inputs.length, outputs.length);
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final allAmount = allInputsAmount - allAmountFee;
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var credentialsAmount = 0;
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var amount = 0;
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var fee = 0;
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if (hasMultiDestination) {
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if (outputs.any((item) => item.sendAll || item.formattedCryptoAmount! <= 0)) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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credentialsAmount = outputs.fold(0, (acc, value) => acc + value.formattedCryptoAmount!);
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if (allAmount - credentialsAmount < minAmount) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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amount = credentialsAmount;
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if (transactionCredentials.feeRate != null) {
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fee = calculateEstimatedFeeWithFeeRate(transactionCredentials.feeRate!, amount,
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outputsCount: outputs.length + 1);
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} else {
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fee = calculateEstimatedFee(transactionCredentials.priority, amount,
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outputsCount: outputs.length + 1);
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}
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} else {
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final output = outputs.first;
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credentialsAmount = !output.sendAll ? output.formattedCryptoAmount! : 0;
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if (credentialsAmount > allAmount) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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amount = output.sendAll || allAmount - credentialsAmount < minAmount
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? allAmount
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: credentialsAmount;
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if (output.sendAll || amount == allAmount) {
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fee = allAmountFee;
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} else if (transactionCredentials.feeRate != null) {
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fee = calculateEstimatedFeeWithFeeRate(transactionCredentials.feeRate!, amount);
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} else {
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fee = calculateEstimatedFee(transactionCredentials.priority, amount);
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}
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}
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if (fee == 0) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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final totalAmount = amount + fee;
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if (totalAmount > balance[currency]!.confirmed || totalAmount > allInputsAmount) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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final txb = bitcoin.TransactionBuilder(network: networkType);
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final changeAddress = await walletAddresses.getChangeAddress();
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var leftAmount = totalAmount;
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var totalInputAmount = 0;
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inputs.clear();
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for (final utx in unspentCoins) {
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if (utx.isSending) {
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leftAmount = leftAmount - utx.value;
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totalInputAmount += utx.value;
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inputs.add(utx);
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if (leftAmount <= 0) {
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break;
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}
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}
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}
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if (inputs.isEmpty) {
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throw BitcoinTransactionNoInputsException();
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}
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if (amount <= 0 || totalInputAmount < totalAmount) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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txb.setVersion(1);
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inputs.forEach((input) {
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if (input.isP2wpkh) {
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final p2wpkh = bitcoin
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.P2WPKH(
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data: generatePaymentData(
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hd: input.bitcoinAddressRecord.isHidden
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? walletAddresses.sideHd
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: walletAddresses.mainHd,
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index: input.bitcoinAddressRecord.index),
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network: networkType)
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.data;
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txb.addInput(input.hash, input.vout, null, p2wpkh.output);
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} else {
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txb.addInput(input.hash, input.vout);
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}
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});
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outputs.forEach((item) {
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final outputAmount = hasMultiDestination ? item.formattedCryptoAmount : amount;
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final outputAddress = item.isParsedAddress ? item.extractedAddress! : item.address;
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txb.addOutput(addressToOutputScript(outputAddress, networkType), outputAmount!);
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});
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final estimatedSize = estimatedTransactionSize(inputs.length, outputs.length + 1);
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var feeAmount = 0;
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if (transactionCredentials.feeRate != null) {
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feeAmount = transactionCredentials.feeRate! * estimatedSize;
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} else {
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feeAmount = feeRate(transactionCredentials.priority!) * estimatedSize;
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}
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final changeValue = totalInputAmount - amount - feeAmount;
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if (changeValue > minAmount) {
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txb.addOutput(changeAddress, changeValue);
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}
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for (var i = 0; i < inputs.length; i++) {
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final input = inputs[i];
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final keyPair = generateKeyPair(
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hd: input.bitcoinAddressRecord.isHidden ? walletAddresses.sideHd : walletAddresses.mainHd,
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index: input.bitcoinAddressRecord.index,
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network: networkType);
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final witnessValue = input.isP2wpkh ? input.value : null;
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txb.sign(vin: i, keyPair: keyPair, witnessValue: witnessValue);
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}
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return PendingBitcoinTransaction(txb.build(), type,
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electrumClient: electrumClient, amount: amount, fee: fee)
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..addListener((transaction) async {
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transactionHistory.addOne(transaction);
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await updateBalance();
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});
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}
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String toJSON() => json.encode({
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'mnemonic': mnemonic,
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'account_index': walletAddresses.currentReceiveAddressIndex.toString(),
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'change_address_index': walletAddresses.currentChangeAddressIndex.toString(),
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'addresses': walletAddresses.addresses.map((addr) => addr.toJSON()).toList(),
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'balance': balance[currency]?.toJSON()
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});
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int feeRate(TransactionPriority priority) {
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try {
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if (priority is BitcoinTransactionPriority) {
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return _feeRates[priority.raw];
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}
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return 0;
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} catch (_) {
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return 0;
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}
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}
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int feeAmountForPriority(
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BitcoinTransactionPriority priority, int inputsCount, int outputsCount) =>
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feeRate(priority) * estimatedTransactionSize(inputsCount, outputsCount);
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int feeAmountWithFeeRate(int feeRate, int inputsCount, int outputsCount) =>
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feeRate * estimatedTransactionSize(inputsCount, outputsCount);
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@override
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int calculateEstimatedFee(TransactionPriority? priority, int? amount, {int? outputsCount}) {
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if (priority is BitcoinTransactionPriority) {
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return calculateEstimatedFeeWithFeeRate(feeRate(priority), amount,
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outputsCount: outputsCount);
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}
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return 0;
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}
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int calculateEstimatedFeeWithFeeRate(int feeRate, int? amount, {int? outputsCount}) {
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int inputsCount = 0;
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if (amount != null) {
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int totalValue = 0;
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for (final input in unspentCoins) {
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if (totalValue >= amount) {
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break;
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}
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if (input.isSending) {
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totalValue += input.value;
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inputsCount += 1;
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}
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}
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if (totalValue < amount) return 0;
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} else {
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for (final input in unspentCoins) {
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if (input.isSending) {
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inputsCount += 1;
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}
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}
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}
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// If send all, then we have no change value
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final _outputsCount = outputsCount ?? (amount != null ? 2 : 1);
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return feeAmountWithFeeRate(feeRate, inputsCount, _outputsCount);
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}
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@override
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Future<void> save() async {
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final path = await makePath();
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await write(path: path, password: _password, data: toJSON());
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await transactionHistory.save();
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}
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@override
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Future<void> renameWalletFiles(String newWalletName) async {
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final currentWalletPath = await pathForWallet(name: walletInfo.name, type: type);
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final currentWalletFile = File(currentWalletPath);
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final currentDirPath = await pathForWalletDir(name: walletInfo.name, type: type);
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final currentTransactionsFile = File('$currentDirPath/$transactionsHistoryFileName');
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// Copies current wallet files into new wallet name's dir and files
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if (currentWalletFile.existsSync()) {
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final newWalletPath = await pathForWallet(name: newWalletName, type: type);
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await currentWalletFile.copy(newWalletPath);
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}
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if (currentTransactionsFile.existsSync()) {
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final newDirPath = await pathForWalletDir(name: newWalletName, type: type);
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await currentTransactionsFile.copy('$newDirPath/$transactionsHistoryFileName');
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}
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// Delete old name's dir and files
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await Directory(currentDirPath).delete(recursive: true);
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}
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@override
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Future<void> changePassword(String password) async {
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_password = password;
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await save();
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await transactionHistory.changePassword(password);
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}
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bitcoin.ECPair keyPairFor({required int index}) =>
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generateKeyPair(hd: hd, index: index, network: networkType);
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@override
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Future<void> rescan({required int height}) async => throw UnimplementedError();
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@override
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Future<void> close() async {
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try {
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await electrumClient.close();
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} catch (_) {}
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}
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Future<String> makePath() async => pathForWallet(name: walletInfo.name, type: walletInfo.type);
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Future<void> updateUnspent() async {
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final unspent = await Future.wait(walletAddresses.addresses.map((address) => electrumClient
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.getListUnspentWithAddress(address.address, networkType)
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.then((unspent) => unspent.map((unspent) {
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try {
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return BitcoinUnspent.fromJSON(address, unspent);
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} catch (_) {
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return null;
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}
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}).whereNotNull())));
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unspentCoins = unspent.expand((e) => e).toList();
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unspentCoins.forEach((coin) async {
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final tx = await fetchTransactionInfo(hash: coin.hash, height: 0);
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coin.isChange = tx?.direction == TransactionDirection.outgoing;
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});
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if (unspentCoinsInfo.isEmpty) {
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unspentCoins.forEach((coin) => _addCoinInfo(coin));
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return;
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}
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if (unspentCoins.isNotEmpty) {
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unspentCoins.forEach((coin) {
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final coinInfoList = unspentCoinsInfo.values
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.where((element) => element.walletId.contains(id) && element.hash.contains(coin.hash));
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if (coinInfoList.isNotEmpty) {
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final coinInfo = coinInfoList.first;
|
|
|
|
coin.isFrozen = coinInfo.isFrozen;
|
|
coin.isSending = coinInfo.isSending;
|
|
coin.note = coinInfo.note;
|
|
} else {
|
|
_addCoinInfo(coin);
|
|
}
|
|
});
|
|
}
|
|
|
|
await _refreshUnspentCoinsInfo();
|
|
}
|
|
|
|
Future<void> _addCoinInfo(BitcoinUnspent coin) async {
|
|
final newInfo = UnspentCoinsInfo(
|
|
walletId: id,
|
|
hash: coin.hash,
|
|
isFrozen: coin.isFrozen,
|
|
isSending: coin.isSending,
|
|
noteRaw: coin.note,
|
|
address: coin.bitcoinAddressRecord.address,
|
|
value: coin.value,
|
|
vout: coin.vout,
|
|
isChange: coin.isChange,
|
|
);
|
|
|
|
await unspentCoinsInfo.add(newInfo);
|
|
}
|
|
|
|
Future<void> _refreshUnspentCoinsInfo() async {
|
|
try {
|
|
final List<dynamic> keys = <dynamic>[];
|
|
final currentWalletUnspentCoins =
|
|
unspentCoinsInfo.values.where((element) => element.walletId.contains(id));
|
|
|
|
if (currentWalletUnspentCoins.isNotEmpty) {
|
|
currentWalletUnspentCoins.forEach((element) {
|
|
final existUnspentCoins = unspentCoins.where((coin) => element.hash.contains(coin.hash));
|
|
|
|
if (existUnspentCoins.isEmpty) {
|
|
keys.add(element.key);
|
|
}
|
|
});
|
|
}
|
|
|
|
if (keys.isNotEmpty) {
|
|
await unspentCoinsInfo.deleteAll(keys);
|
|
}
|
|
} catch (e) {
|
|
print(e.toString());
|
|
}
|
|
}
|
|
|
|
Future<ElectrumTransactionBundle> getTransactionExpanded(
|
|
{required String hash, required int height}) async {
|
|
final verboseTransaction = await electrumClient.getTransactionRaw(hash: hash);
|
|
final transactionHex = verboseTransaction['hex'] as String;
|
|
final original = bitcoin.Transaction.fromHex(transactionHex);
|
|
final ins = <bitcoin.Transaction>[];
|
|
final time = verboseTransaction['time'] as int?;
|
|
final confirmations = verboseTransaction['confirmations'] as int? ?? 0;
|
|
|
|
for (final vin in original.ins) {
|
|
final id = HEX.encode(vin.hash!.reversed.toList());
|
|
final txHex = await electrumClient.getTransactionHex(hash: id);
|
|
final tx = bitcoin.Transaction.fromHex(txHex);
|
|
ins.add(tx);
|
|
}
|
|
|
|
return ElectrumTransactionBundle(original, ins: ins, time: time, confirmations: confirmations);
|
|
}
|
|
|
|
Future<ElectrumTransactionInfo?> fetchTransactionInfo(
|
|
{required String hash, required int height}) async {
|
|
try {
|
|
final tx = await getTransactionExpanded(hash: hash, height: height);
|
|
final addresses = walletAddresses.addresses.map((addr) => addr.address).toSet();
|
|
return ElectrumTransactionInfo.fromElectrumBundle(tx, walletInfo.type, networkType,
|
|
addresses: addresses, height: height);
|
|
} catch (_) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<Map<String, ElectrumTransactionInfo>> fetchTransactions() async {
|
|
final addressHashes = <String, BitcoinAddressRecord>{};
|
|
final normalizedHistories = <Map<String, dynamic>>[];
|
|
final newTxCounts = <String, int>{};
|
|
|
|
walletAddresses.addresses.forEach((addressRecord) {
|
|
final sh = scriptHash(addressRecord.address, networkType: networkType);
|
|
addressHashes[sh] = addressRecord;
|
|
newTxCounts[sh] = 0;
|
|
});
|
|
|
|
try {
|
|
final histories = addressHashes.keys.map((scriptHash) =>
|
|
electrumClient.getHistory(scriptHash).then((history) => {scriptHash: history}));
|
|
final historyResults = await Future.wait(histories);
|
|
|
|
historyResults.forEach((history) {
|
|
history.entries.forEach((historyItem) {
|
|
if (historyItem.value.isNotEmpty) {
|
|
final address = addressHashes[historyItem.key];
|
|
address?.setAsUsed();
|
|
newTxCounts[historyItem.key] = historyItem.value.length;
|
|
normalizedHistories.addAll(historyItem.value);
|
|
}
|
|
});
|
|
});
|
|
|
|
for (var sh in addressHashes.keys) {
|
|
var balanceData = await electrumClient.getBalance(sh);
|
|
var addressRecord = addressHashes[sh];
|
|
if (addressRecord != null) {
|
|
addressRecord.balance = balanceData['confirmed'] as int? ?? 0;
|
|
}
|
|
}
|
|
|
|
addressHashes.forEach((sh, addressRecord) {
|
|
addressRecord.txCount = newTxCounts[sh] ?? 0;
|
|
});
|
|
|
|
final historiesWithDetails = await Future.wait(normalizedHistories.map((transaction) {
|
|
try {
|
|
return fetchTransactionInfo(
|
|
hash: transaction['tx_hash'] as String, height: transaction['height'] as int);
|
|
} catch (_) {
|
|
return Future.value(null);
|
|
}
|
|
}));
|
|
|
|
return historiesWithDetails.fold<Map<String, ElectrumTransactionInfo>>(
|
|
<String, ElectrumTransactionInfo>{}, (acc, tx) {
|
|
if (tx == null) {
|
|
return acc;
|
|
}
|
|
acc[tx.id] = acc[tx.id]?.updated(tx) ?? tx;
|
|
return acc;
|
|
});
|
|
} catch (e) {
|
|
print(e.toString());
|
|
return {};
|
|
}
|
|
}
|
|
|
|
Future<void> updateTransactions() async {
|
|
try {
|
|
if (_isTransactionUpdating) {
|
|
return;
|
|
}
|
|
|
|
_isTransactionUpdating = true;
|
|
final transactions = await fetchTransactions();
|
|
transactionHistory.addMany(transactions);
|
|
walletAddresses.updateReceiveAddresses();
|
|
await transactionHistory.save();
|
|
_isTransactionUpdating = false;
|
|
} catch (e, stacktrace) {
|
|
print(stacktrace);
|
|
print(e);
|
|
_isTransactionUpdating = false;
|
|
}
|
|
}
|
|
|
|
void _subscribeForUpdates() {
|
|
scriptHashes.forEach((sh) async {
|
|
await _scripthashesUpdateSubject[sh]?.close();
|
|
_scripthashesUpdateSubject[sh] = electrumClient.scripthashUpdate(sh);
|
|
_scripthashesUpdateSubject[sh]?.listen((event) async {
|
|
try {
|
|
await updateUnspent();
|
|
await updateBalance();
|
|
await updateTransactions();
|
|
} catch (e, s) {
|
|
print(e.toString());
|
|
_onError?.call(FlutterErrorDetails(
|
|
exception: e,
|
|
stack: s,
|
|
library: this.runtimeType.toString(),
|
|
));
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
Future<ElectrumBalance> _fetchBalances() async {
|
|
final addresses = walletAddresses.addresses.toList();
|
|
final balanceFutures = <Future<Map<String, dynamic>>>[];
|
|
for (var i = 0; i < addresses.length; i++) {
|
|
final addressRecord = addresses[i];
|
|
final sh = scriptHash(addressRecord.address, networkType: networkType);
|
|
final balanceFuture = electrumClient.getBalance(sh);
|
|
balanceFutures.add(balanceFuture);
|
|
}
|
|
|
|
var totalFrozen = 0;
|
|
unspentCoinsInfo.values.forEach((info) {
|
|
unspentCoins.forEach((element) {
|
|
if (element.hash == info.hash &&
|
|
info.isFrozen &&
|
|
element.bitcoinAddressRecord.address == info.address &&
|
|
element.value == info.value) {
|
|
totalFrozen += element.value;
|
|
}
|
|
});
|
|
});
|
|
|
|
final balances = await Future.wait(balanceFutures);
|
|
var totalConfirmed = 0;
|
|
var totalUnconfirmed = 0;
|
|
|
|
for (var i = 0; i < balances.length; i++) {
|
|
final addressRecord = addresses[i];
|
|
final balance = balances[i];
|
|
final confirmed = balance['confirmed'] as int? ?? 0;
|
|
final unconfirmed = balance['unconfirmed'] as int? ?? 0;
|
|
totalConfirmed += confirmed;
|
|
totalUnconfirmed += unconfirmed;
|
|
|
|
if (confirmed > 0 || unconfirmed > 0) {
|
|
addressRecord.setAsUsed();
|
|
}
|
|
}
|
|
|
|
return ElectrumBalance(
|
|
confirmed: totalConfirmed, unconfirmed: totalUnconfirmed, frozen: totalFrozen);
|
|
}
|
|
|
|
Future<void> updateBalance() async {
|
|
balance[currency] = await _fetchBalances();
|
|
await save();
|
|
}
|
|
|
|
String getChangeAddress() {
|
|
const minCountOfHiddenAddresses = 5;
|
|
final random = Random();
|
|
var addresses = walletAddresses.addresses.where((addr) => addr.isHidden).toList();
|
|
|
|
if (addresses.length < minCountOfHiddenAddresses) {
|
|
addresses = walletAddresses.addresses.toList();
|
|
}
|
|
|
|
return addresses[random.nextInt(addresses.length)].address;
|
|
}
|
|
|
|
@override
|
|
void setExceptionHandler(void Function(FlutterErrorDetails) onError) => _onError = onError;
|
|
|
|
@override
|
|
String signMessage(String message, {String? address = null}) {
|
|
final index = address != null
|
|
? walletAddresses.addresses.firstWhere((element) => element.address == address).index
|
|
: null;
|
|
final HD = index == null ? hd : hd.derive(index);
|
|
return base64Encode(HD.signMessage(message));
|
|
}
|
|
}
|