mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-12-23 12:09:43 +00:00
1977 lines
63 KiB
Dart
1977 lines
63 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:isolate';
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import 'package:bitcoin_base/bitcoin_base.dart';
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import 'package:cw_bitcoin/electrum_worker/electrum_worker.dart';
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import 'package:cw_bitcoin/electrum_worker/electrum_worker_methods.dart';
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import 'package:cw_bitcoin/electrum_worker/electrum_worker_params.dart';
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import 'package:cw_bitcoin/electrum_worker/methods/methods.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:blockchain_utils/blockchain_utils.dart';
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import 'package:collection/collection.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_priority.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_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/exceptions.dart';
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import 'package:cw_bitcoin/pending_bitcoin_transaction.dart';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cw_core/encryption_file_utils.dart';
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import 'package:cw_core/get_height_by_date.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_priority.dart';
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import 'package:cw_core/unspent_coins_info.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:cw_core/wallet_keys_file.dart';
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import 'package:cw_core/unspent_coin_type.dart';
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import 'package:flutter/foundation.dart';
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import 'package:hive/hive.dart';
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import 'package:ledger_flutter_plus/ledger_flutter_plus.dart' as ledger;
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import 'package:mobx/mobx.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, WalletKeysFile {
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ReceivePort? receivePort;
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SendPort? workerSendPort;
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StreamSubscription<dynamic>? _workerSubscription;
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Isolate? _workerIsolate;
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final Map<int, dynamic> _responseCompleters = {};
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final Map<int, dynamic> _errorCompleters = {};
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int _messageId = 0;
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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.network,
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required this.encryptionFileUtils,
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Map<CWBitcoinDerivationType, Bip32Slip10Secp256k1>? hdWallets,
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String? xpub,
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String? mnemonic,
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List<int>? seedBytes,
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this.passphrase,
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List<BitcoinAddressRecord>? initialAddresses,
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ElectrumBalance? initialBalance,
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CryptoCurrency? currency,
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this.alwaysScan,
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required this.mempoolAPIEnabled,
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List<BitcoinUnspent> initialUnspentCoins = const [],
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}) : hdWallets = hdWallets ??
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{
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CWBitcoinDerivationType.bip39: getAccountHDWallet(
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currency,
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network,
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seedBytes,
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xpub,
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walletInfo.derivationInfo,
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)
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},
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syncStatus = NotConnectedSyncStatus(),
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_password = password,
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isEnabledAutoGenerateSubaddress = true,
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unspentCoins = BitcoinUnspentCoins.of(initialUnspentCoins),
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scripthashesListening = [],
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balance = ObservableMap<CryptoCurrency, ElectrumBalance>.of(currency != null
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? {
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currency: initialBalance ??
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ElectrumBalance(
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confirmed: 0,
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unconfirmed: 0,
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frozen: 0,
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)
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}
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: {}),
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this.unspentCoinsInfo = unspentCoinsInfo,
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this.isTestnet = !network.isMainnet,
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this._mnemonic = mnemonic,
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super(walletInfo) {
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this.walletInfo = walletInfo;
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transactionHistory = ElectrumTransactionHistory(
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walletInfo: walletInfo,
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password: password,
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encryptionFileUtils: encryptionFileUtils,
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);
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reaction((_) => syncStatus, syncStatusReaction);
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sharedPrefs.complete(SharedPreferences.getInstance());
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}
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// Sends a request to the worker and returns a future that completes when the worker responds
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Future<dynamic> sendWorker(ElectrumWorkerRequest request) {
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final messageId = ++_messageId;
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final completer = Completer<dynamic>();
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_responseCompleters[messageId] = completer;
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final json = request.toJson();
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json['id'] = messageId;
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workerSendPort!.send(json);
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try {
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return completer.future.timeout(Duration(seconds: 30));
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} catch (e) {
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_errorCompleters.addAll({messageId: e});
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_responseCompleters.remove(messageId);
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rethrow;
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}
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}
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@action
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Future<void> handleWorkerResponse(dynamic message) async {
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print('Main: received message: $message');
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Map<String, dynamic> messageJson;
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if (message is String) {
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messageJson = jsonDecode(message) as Map<String, dynamic>;
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} else {
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messageJson = message as Map<String, dynamic>;
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}
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final workerMethod = messageJson['method'] as String;
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final workerError = messageJson['error'] as String?;
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final responseId = messageJson['id'] as int?;
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if (responseId != null && _responseCompleters.containsKey(responseId)) {
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_responseCompleters[responseId]!.complete(message);
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_responseCompleters.remove(responseId);
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}
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switch (workerMethod) {
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case ElectrumWorkerMethods.connectionMethod:
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if (workerError != null) {
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_onConnectionStatusChange(ConnectionStatus.failed);
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break;
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}
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final response = ElectrumWorkerConnectionResponse.fromJson(messageJson);
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_onConnectionStatusChange(response.result);
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break;
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case ElectrumRequestMethods.headersSubscribeMethod:
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final response = ElectrumWorkerHeadersSubscribeResponse.fromJson(messageJson);
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await onHeadersResponse(response.result);
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break;
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case ElectrumRequestMethods.getBalanceMethod:
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final response = ElectrumWorkerGetBalanceResponse.fromJson(messageJson);
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onBalanceResponse(response.result);
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break;
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case ElectrumRequestMethods.getHistoryMethod:
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final response = ElectrumWorkerGetHistoryResponse.fromJson(messageJson);
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onHistoriesResponse(response.result);
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break;
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case ElectrumRequestMethods.listunspentMethod:
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final response = ElectrumWorkerListUnspentResponse.fromJson(messageJson);
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onUnspentResponse(response.result);
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break;
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case ElectrumRequestMethods.estimateFeeMethod:
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final response = ElectrumWorkerGetFeesResponse.fromJson(messageJson);
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onFeesResponse(response.result);
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break;
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}
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}
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static Bip32Slip10Secp256k1 getAccountHDWallet(CryptoCurrency? currency, BasedUtxoNetwork network,
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List<int>? seedBytes, String? xpub, DerivationInfo? derivationInfo) {
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if (seedBytes == null && xpub == null) {
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throw Exception(
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"To create a Wallet you need either a seed or an xpub. This should not happen");
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}
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if (seedBytes != null) {
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return Bip32Slip10Secp256k1.fromSeed(seedBytes);
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}
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return Bip32Slip10Secp256k1.fromExtendedKey(xpub!, getKeyNetVersion(network));
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}
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int estimatedTransactionSize(int inputsCount, int outputsCounts) =>
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inputsCount * 68 + outputsCounts * 34 + 10;
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static Bip32KeyNetVersions? getKeyNetVersion(BasedUtxoNetwork network) {
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switch (network) {
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case LitecoinNetwork.mainnet:
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return Bip44Conf.litecoinMainNet.altKeyNetVer;
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default:
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return null;
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}
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}
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bool? alwaysScan;
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bool mempoolAPIEnabled;
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bool _updatingHistories = false;
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final Map<CWBitcoinDerivationType, Bip32Slip10Secp256k1> hdWallets;
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Bip32Slip10Secp256k1 get bip32 => walletAddresses.hdWallet;
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final String? _mnemonic;
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final EncryptionFileUtils encryptionFileUtils;
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@override
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final String? passphrase;
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@override
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@observable
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bool isEnabledAutoGenerateSubaddress;
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ApiProvider? apiProvider;
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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 addressesSet => walletAddresses.allAddresses
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.where((element) => element.addressType != SegwitAddresType.mweb)
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.map((addr) => addr.address)
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.toList();
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List<String> get scriptHashes => walletAddresses.addressesByReceiveType
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.where((addr) => RegexUtils.addressTypeFromStr(addr.address, network) is! MwebAddress)
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.map((addr) => (addr as BitcoinAddressRecord).scriptHash)
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.toList();
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List<String> get publicScriptHashes => walletAddresses.allAddresses
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.where((addr) => !addr.isChange)
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.where((addr) => RegexUtils.addressTypeFromStr(addr.address, network) is! MwebAddress)
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.map((addr) => addr.scriptHash)
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.toList();
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String get xpub => bip32.publicKey.toExtended;
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@override
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String? get seed => _mnemonic;
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@override
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WalletKeysData get walletKeysData =>
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WalletKeysData(mnemonic: _mnemonic, xPub: xpub, passphrase: passphrase);
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@override
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String get password => _password;
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BasedUtxoNetwork network;
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@override
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bool isTestnet;
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bool _isTryingToConnect = false;
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Completer<SharedPreferences> sharedPrefs = Completer();
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@observable
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int? currentChainTip;
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@override
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BitcoinWalletKeys get keys => BitcoinWalletKeys(
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wif: WifEncoder.encode(bip32.privateKey.raw, netVer: network.wifNetVer),
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privateKey: bip32.privateKey.toHex(),
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publicKey: bip32.publicKey.toHex(),
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);
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String _password;
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BitcoinUnspentCoins unspentCoins;
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@observable
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TransactionPriorities? feeRates;
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int feeRate(TransactionPriority priority) {
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if (priority is ElectrumTransactionPriority && feeRates is BitcoinTransactionPriorities) {
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final rates = feeRates as BitcoinTransactionPriorities;
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switch (priority) {
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case ElectrumTransactionPriority.slow:
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return rates.normal;
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case ElectrumTransactionPriority.medium:
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return rates.elevated;
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case ElectrumTransactionPriority.fast:
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return rates.priority;
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case ElectrumTransactionPriority.custom:
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return rates.custom;
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}
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}
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return feeRates![priority];
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}
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@observable
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List<String> scripthashesListening;
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bool _chainTipListenerOn = false;
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// TODO: improve this
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int _syncedTimes = 0;
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void Function(FlutterErrorDetails)? _onError;
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Timer? _autoSaveTimer;
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Timer? _updateFeeRateTimer;
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static const int _autoSaveInterval = 1;
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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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_autoSaveTimer =
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Timer.periodic(Duration(minutes: _autoSaveInterval), (_) async => 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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if (syncStatus is SynchronizingSyncStatus) {
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return;
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}
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syncStatus = SynchronizingSyncStatus();
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// INFO: FIRST (always): Call subscribe for headers, wait for completion to update currentChainTip (needed for other methods)
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await sendWorker(ElectrumWorkerHeadersSubscribeRequest());
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_syncedTimes = 0;
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// INFO: SECOND: Start loading transaction histories for every address, this will help discover addresses until the unused gap limit has been reached, which will help finding the full balance and unspents next
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await updateTransactions();
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// INFO: THIRD: Get the full wallet's balance with all addresses considered
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await updateBalance();
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// INFO: FOURTH: Finish getting unspent coins for all the addresses
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await updateAllUnspents();
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// INFO: FIFTH: Get the latest recommended fee rates and start update timer
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await updateFeeRates();
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_updateFeeRateTimer ??=
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Timer.periodic(const Duration(seconds: 5), (timer) async => await updateFeeRates());
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if (_syncedTimes == 3) {
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syncStatus = SyncedSyncStatus();
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}
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await save();
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} catch (e, stacktrace) {
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print("startSync $e");
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print(stacktrace);
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syncStatus = FailedSyncStatus();
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}
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}
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@action
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void callError(FlutterErrorDetails error) {
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_onError?.call(error);
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}
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@action
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Future<void> updateFeeRates() async {
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workerSendPort!.send(
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ElectrumWorkerGetFeesRequest(mempoolAPIEnabled: mempoolAPIEnabled).toJson(),
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);
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}
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@action
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Future<void> onFeesResponse(TransactionPriorities? result) async {
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if (result != null) {
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feeRates = result;
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}
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}
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Node? node;
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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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this.node = node;
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try {
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syncStatus = ConnectingSyncStatus();
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if (_workerIsolate != null) {
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_workerIsolate!.kill(priority: Isolate.immediate);
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_workerSubscription?.cancel();
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receivePort?.close();
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}
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receivePort = ReceivePort();
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_workerIsolate = await Isolate.spawn<SendPort>(ElectrumWorker.run, receivePort!.sendPort);
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_workerSubscription = receivePort!.listen((message) {
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print('Main: received message: $message');
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if (message is SendPort) {
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workerSendPort = message;
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workerSendPort!.send(
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ElectrumWorkerConnectionRequest(
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uri: node.uri,
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useSSL: node.useSSL ?? false,
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network: network,
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walletType: walletInfo.type,
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).toJson(),
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);
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} else {
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handleWorkerResponse(message);
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}
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});
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} catch (e, stacktrace) {
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print(stacktrace);
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print("connectToNode $e");
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syncStatus = FailedSyncStatus();
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}
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}
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int get _dustAmount => 546;
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bool _isBelowDust(int amount) => amount <= _dustAmount && network != BitcoinNetwork.testnet;
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TxCreateUtxoDetails _createUTXOS({
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required bool sendAll,
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required bool paysToSilentPayment,
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int credentialsAmount = 0,
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int? inputsCount,
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UnspentCoinType coinTypeToSpendFrom = UnspentCoinType.any,
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}) {
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List<UtxoWithAddress> utxos = [];
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List<Outpoint> vinOutpoints = [];
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List<ECPrivateInfo> inputPrivKeyInfos = [];
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final publicKeys = <String, PublicKeyWithDerivationPath>{};
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int allInputsAmount = 0;
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bool spendsSilentPayment = false;
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bool spendsUnconfirmedTX = false;
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int leftAmount = credentialsAmount;
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var availableInputs = unspentCoins.where((utx) {
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if (!utx.isSending || utx.isFrozen) {
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return false;
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}
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switch (coinTypeToSpendFrom) {
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case UnspentCoinType.mweb:
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return utx.bitcoinAddressRecord.addressType == SegwitAddresType.mweb;
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case UnspentCoinType.nonMweb:
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return utx.bitcoinAddressRecord.addressType != SegwitAddresType.mweb;
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case UnspentCoinType.any:
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return true;
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}
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}).toList();
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final unconfirmedCoins = availableInputs.where((utx) => utx.confirmations == 0).toList();
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// sort the unconfirmed coins so that mweb coins are first:
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availableInputs
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.sort((a, b) => a.bitcoinAddressRecord.addressType == SegwitAddresType.mweb ? -1 : 1);
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for (int i = 0; i < availableInputs.length; i++) {
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final utx = availableInputs[i];
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if (!spendsUnconfirmedTX) spendsUnconfirmedTX = utx.confirmations == 0;
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if (paysToSilentPayment) {
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// Check inputs for shared secret derivation
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if (utx.bitcoinAddressRecord.addressType == SegwitAddresType.p2wsh) {
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throw BitcoinTransactionSilentPaymentsNotSupported();
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}
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}
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allInputsAmount += utx.value;
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leftAmount = leftAmount - utx.value;
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final address = RegexUtils.addressTypeFromStr(utx.address, network);
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ECPrivate? privkey;
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bool? isSilentPayment = false;
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if (utx.bitcoinAddressRecord is BitcoinReceivedSPAddressRecord) {
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privkey = (utx.bitcoinAddressRecord as BitcoinReceivedSPAddressRecord).spendKey;
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spendsSilentPayment = true;
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isSilentPayment = true;
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} else if (!isHardwareWallet) {
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final addressRecord = (utx.bitcoinAddressRecord as BitcoinAddressRecord);
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final path = addressRecord.derivationInfo.derivationPath
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.addElem(Bip32KeyIndex(
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BitcoinAddressUtils.getAccountFromChange(addressRecord.isChange),
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))
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.addElem(Bip32KeyIndex(addressRecord.index));
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privkey = ECPrivate.fromBip32(bip32: bip32.derive(path));
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}
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|
|
vinOutpoints.add(Outpoint(txid: utx.hash, index: utx.vout));
|
|
String pubKeyHex;
|
|
|
|
if (privkey != null) {
|
|
inputPrivKeyInfos.add(ECPrivateInfo(
|
|
privkey,
|
|
address.type == SegwitAddresType.p2tr,
|
|
tweak: !isSilentPayment,
|
|
));
|
|
|
|
pubKeyHex = privkey.getPublic().toHex();
|
|
} else {
|
|
pubKeyHex = walletAddresses.hdWallet
|
|
.childKey(Bip32KeyIndex(utx.bitcoinAddressRecord.index))
|
|
.publicKey
|
|
.toHex();
|
|
}
|
|
|
|
if (utx.bitcoinAddressRecord is BitcoinAddressRecord) {
|
|
final derivationPath = (utx.bitcoinAddressRecord as BitcoinAddressRecord)
|
|
.derivationInfo
|
|
.derivationPath
|
|
.toString();
|
|
publicKeys[address.pubKeyHash()] = PublicKeyWithDerivationPath(pubKeyHex, derivationPath);
|
|
}
|
|
|
|
utxos.add(
|
|
UtxoWithAddress(
|
|
utxo: BitcoinUtxo(
|
|
txHash: utx.hash,
|
|
value: BigInt.from(utx.value),
|
|
vout: utx.vout,
|
|
scriptType: BitcoinAddressUtils.getScriptType(address),
|
|
isSilentPayment: isSilentPayment,
|
|
),
|
|
ownerDetails: UtxoAddressDetails(
|
|
publicKey: pubKeyHex,
|
|
address: address,
|
|
),
|
|
),
|
|
);
|
|
|
|
// sendAll continues for all inputs
|
|
if (!sendAll) {
|
|
bool amountIsAcquired = leftAmount <= 0;
|
|
if ((inputsCount == null && amountIsAcquired) || inputsCount == i + 1) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (utxos.isEmpty) {
|
|
throw BitcoinTransactionNoInputsException();
|
|
}
|
|
|
|
return TxCreateUtxoDetails(
|
|
availableInputs: availableInputs,
|
|
unconfirmedCoins: unconfirmedCoins,
|
|
utxos: utxos,
|
|
vinOutpoints: vinOutpoints,
|
|
inputPrivKeyInfos: inputPrivKeyInfos,
|
|
publicKeys: publicKeys,
|
|
allInputsAmount: allInputsAmount,
|
|
spendsSilentPayment: spendsSilentPayment,
|
|
spendsUnconfirmedTX: spendsUnconfirmedTX,
|
|
);
|
|
}
|
|
|
|
Future<EstimatedTxResult> estimateSendAllTx(
|
|
List<BitcoinOutput> outputs,
|
|
int feeRate, {
|
|
String? memo,
|
|
bool hasSilentPayment = false,
|
|
UnspentCoinType coinTypeToSpendFrom = UnspentCoinType.any,
|
|
}) async {
|
|
final utxoDetails = _createUTXOS(
|
|
sendAll: true,
|
|
paysToSilentPayment: hasSilentPayment,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
|
|
int fee = await calcFee(
|
|
utxos: utxoDetails.utxos,
|
|
outputs: outputs,
|
|
memo: memo,
|
|
feeRate: feeRate,
|
|
);
|
|
|
|
if (fee == 0) {
|
|
throw BitcoinTransactionNoFeeException();
|
|
}
|
|
|
|
// Here, when sending all, the output amount equals to the input value - fee to fully spend every input on the transaction and have no amount left for change
|
|
int amount = utxoDetails.allInputsAmount - fee;
|
|
|
|
if (amount <= 0) {
|
|
throw BitcoinTransactionWrongBalanceException(amount: utxoDetails.allInputsAmount + fee);
|
|
}
|
|
|
|
// Attempting to send less than the dust limit
|
|
if (_isBelowDust(amount)) {
|
|
throw BitcoinTransactionNoDustException();
|
|
}
|
|
|
|
if (outputs.length == 1) {
|
|
outputs[0] = BitcoinOutput(address: outputs.last.address, value: BigInt.from(amount));
|
|
}
|
|
|
|
return EstimatedTxResult(
|
|
utxos: utxoDetails.utxos,
|
|
inputPrivKeyInfos: utxoDetails.inputPrivKeyInfos,
|
|
publicKeys: utxoDetails.publicKeys,
|
|
fee: fee,
|
|
amount: amount,
|
|
isSendAll: true,
|
|
hasChange: false,
|
|
memo: memo,
|
|
spendsUnconfirmedTX: utxoDetails.spendsUnconfirmedTX,
|
|
spendsSilentPayment: utxoDetails.spendsSilentPayment,
|
|
);
|
|
}
|
|
|
|
Future<EstimatedTxResult> estimateTxForAmount(
|
|
int credentialsAmount,
|
|
List<BitcoinOutput> outputs,
|
|
List<BitcoinOutput> updatedOutputs,
|
|
int feeRate, {
|
|
int? inputsCount,
|
|
String? memo,
|
|
bool? useUnconfirmed,
|
|
bool hasSilentPayment = false,
|
|
UnspentCoinType coinTypeToSpendFrom = UnspentCoinType.any,
|
|
}) async {
|
|
// Attempting to send less than the dust limit
|
|
if (_isBelowDust(credentialsAmount)) {
|
|
throw BitcoinTransactionNoDustException();
|
|
}
|
|
|
|
final utxoDetails = _createUTXOS(
|
|
sendAll: false,
|
|
credentialsAmount: credentialsAmount,
|
|
inputsCount: inputsCount,
|
|
paysToSilentPayment: hasSilentPayment,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
|
|
final spendingAllCoins = utxoDetails.availableInputs.length == utxoDetails.utxos.length;
|
|
final spendingAllConfirmedCoins = !utxoDetails.spendsUnconfirmedTX &&
|
|
utxoDetails.utxos.length ==
|
|
utxoDetails.availableInputs.length - utxoDetails.unconfirmedCoins.length;
|
|
|
|
// How much is being spent - how much is being sent
|
|
int amountLeftForChangeAndFee = utxoDetails.allInputsAmount - credentialsAmount;
|
|
|
|
if (amountLeftForChangeAndFee <= 0) {
|
|
if (!spendingAllCoins) {
|
|
return estimateTxForAmount(
|
|
credentialsAmount,
|
|
outputs,
|
|
updatedOutputs,
|
|
feeRate,
|
|
inputsCount: utxoDetails.utxos.length + 1,
|
|
memo: memo,
|
|
hasSilentPayment: hasSilentPayment,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
}
|
|
|
|
throw BitcoinTransactionWrongBalanceException();
|
|
}
|
|
|
|
final changeAddress = await walletAddresses.getChangeAddress(
|
|
inputs: utxoDetails.availableInputs,
|
|
outputs: updatedOutputs,
|
|
);
|
|
final address = RegexUtils.addressTypeFromStr(changeAddress.address, network);
|
|
updatedOutputs.add(BitcoinOutput(
|
|
address: address,
|
|
value: BigInt.from(amountLeftForChangeAndFee),
|
|
isChange: true,
|
|
));
|
|
outputs.add(BitcoinOutput(
|
|
address: address,
|
|
value: BigInt.from(amountLeftForChangeAndFee),
|
|
isChange: true,
|
|
));
|
|
|
|
final changeDerivationPath = changeAddress.derivationInfo.derivationPath.toString();
|
|
utxoDetails.publicKeys[address.pubKeyHash()] =
|
|
PublicKeyWithDerivationPath('', changeDerivationPath);
|
|
|
|
// calcFee updates the silent payment outputs to calculate the tx size accounting
|
|
// for taproot addresses, but if more inputs are needed to make up for fees,
|
|
// the silent payment outputs need to be recalculated for the new inputs
|
|
var temp = outputs.map((output) => output).toList();
|
|
int fee = await calcFee(
|
|
utxos: utxoDetails.utxos,
|
|
// Always take only not updated bitcoin outputs here so for every estimation
|
|
// the SP outputs are re-generated to the proper taproot addresses
|
|
outputs: temp,
|
|
memo: memo,
|
|
feeRate: feeRate,
|
|
);
|
|
|
|
updatedOutputs.clear();
|
|
updatedOutputs.addAll(temp);
|
|
|
|
if (fee == 0) {
|
|
throw BitcoinTransactionNoFeeException();
|
|
}
|
|
|
|
int amount = credentialsAmount;
|
|
final lastOutput = updatedOutputs.last;
|
|
final amountLeftForChange = amountLeftForChangeAndFee - fee;
|
|
|
|
if (_isBelowDust(amountLeftForChange)) {
|
|
// If has change that is lower than dust, will end up with tx rejected by network rules
|
|
// so remove the change amount
|
|
updatedOutputs.removeLast();
|
|
outputs.removeLast();
|
|
|
|
if (amountLeftForChange < 0) {
|
|
if (!spendingAllCoins) {
|
|
return estimateTxForAmount(
|
|
credentialsAmount,
|
|
outputs,
|
|
updatedOutputs,
|
|
feeRate,
|
|
inputsCount: utxoDetails.utxos.length + 1,
|
|
memo: memo,
|
|
useUnconfirmed: useUnconfirmed ?? spendingAllConfirmedCoins,
|
|
hasSilentPayment: hasSilentPayment,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
} else {
|
|
throw BitcoinTransactionWrongBalanceException();
|
|
}
|
|
}
|
|
|
|
return EstimatedTxResult(
|
|
utxos: utxoDetails.utxos,
|
|
inputPrivKeyInfos: utxoDetails.inputPrivKeyInfos,
|
|
publicKeys: utxoDetails.publicKeys,
|
|
fee: fee,
|
|
amount: amount,
|
|
hasChange: false,
|
|
isSendAll: spendingAllCoins,
|
|
memo: memo,
|
|
spendsUnconfirmedTX: utxoDetails.spendsUnconfirmedTX,
|
|
spendsSilentPayment: utxoDetails.spendsSilentPayment,
|
|
);
|
|
} else {
|
|
// Here, lastOutput already is change, return the amount left without the fee to the user's address.
|
|
updatedOutputs[updatedOutputs.length - 1] = BitcoinOutput(
|
|
address: lastOutput.address,
|
|
value: BigInt.from(amountLeftForChange),
|
|
isSilentPayment: lastOutput.isSilentPayment,
|
|
isChange: true,
|
|
);
|
|
outputs[outputs.length - 1] = BitcoinOutput(
|
|
address: lastOutput.address,
|
|
value: BigInt.from(amountLeftForChange),
|
|
isSilentPayment: lastOutput.isSilentPayment,
|
|
isChange: true,
|
|
);
|
|
|
|
return EstimatedTxResult(
|
|
utxos: utxoDetails.utxos,
|
|
inputPrivKeyInfos: utxoDetails.inputPrivKeyInfos,
|
|
publicKeys: utxoDetails.publicKeys,
|
|
fee: fee,
|
|
amount: amount,
|
|
hasChange: true,
|
|
isSendAll: spendingAllCoins,
|
|
memo: memo,
|
|
spendsUnconfirmedTX: utxoDetails.spendsUnconfirmedTX,
|
|
spendsSilentPayment: utxoDetails.spendsSilentPayment,
|
|
);
|
|
}
|
|
}
|
|
|
|
Future<int> calcFee({
|
|
required List<UtxoWithAddress> utxos,
|
|
required List<BitcoinBaseOutput> outputs,
|
|
String? memo,
|
|
required int feeRate,
|
|
}) async =>
|
|
feeRate *
|
|
BitcoinTransactionBuilder.estimateTransactionSize(
|
|
utxos: utxos,
|
|
outputs: outputs,
|
|
network: network,
|
|
memo: memo,
|
|
);
|
|
|
|
@override
|
|
Future<PendingTransaction> createTransaction(Object credentials) async {
|
|
try {
|
|
final outputs = <BitcoinOutput>[];
|
|
final transactionCredentials = credentials as BitcoinTransactionCredentials;
|
|
final hasMultiDestination = transactionCredentials.outputs.length > 1;
|
|
final sendAll = !hasMultiDestination && transactionCredentials.outputs.first.sendAll;
|
|
final memo = transactionCredentials.outputs.first.memo;
|
|
final coinTypeToSpendFrom = transactionCredentials.coinTypeToSpendFrom;
|
|
|
|
int credentialsAmount = 0;
|
|
bool hasSilentPayment = false;
|
|
|
|
for (final out in transactionCredentials.outputs) {
|
|
final outputAmount = out.formattedCryptoAmount!;
|
|
|
|
if (!sendAll && _isBelowDust(outputAmount)) {
|
|
throw BitcoinTransactionNoDustException();
|
|
}
|
|
|
|
if (hasMultiDestination) {
|
|
if (out.sendAll) {
|
|
throw BitcoinTransactionWrongBalanceException();
|
|
}
|
|
}
|
|
|
|
credentialsAmount += outputAmount;
|
|
|
|
final address = RegexUtils.addressTypeFromStr(
|
|
out.isParsedAddress ? out.extractedAddress! : out.address, network);
|
|
final isSilentPayment = address is SilentPaymentAddress;
|
|
|
|
if (isSilentPayment) {
|
|
hasSilentPayment = true;
|
|
}
|
|
|
|
if (sendAll) {
|
|
// The value will be changed after estimating the Tx size and deducting the fee from the total to be sent
|
|
outputs.add(BitcoinOutput(
|
|
address: address,
|
|
value: BigInt.from(0),
|
|
isSilentPayment: isSilentPayment,
|
|
));
|
|
} else {
|
|
outputs.add(BitcoinOutput(
|
|
address: address,
|
|
value: BigInt.from(outputAmount),
|
|
isSilentPayment: isSilentPayment,
|
|
));
|
|
}
|
|
}
|
|
|
|
final feeRateInt = transactionCredentials.feeRate != null
|
|
? transactionCredentials.feeRate!
|
|
: feeRate(transactionCredentials.priority!);
|
|
|
|
EstimatedTxResult estimatedTx;
|
|
final updatedOutputs = outputs
|
|
.map((e) => BitcoinOutput(
|
|
address: e.address,
|
|
value: e.value,
|
|
isSilentPayment: e.isSilentPayment,
|
|
isChange: e.isChange,
|
|
))
|
|
.toList();
|
|
|
|
if (sendAll) {
|
|
estimatedTx = await estimateSendAllTx(
|
|
updatedOutputs,
|
|
feeRateInt,
|
|
memo: memo,
|
|
hasSilentPayment: hasSilentPayment,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
} else {
|
|
estimatedTx = await estimateTxForAmount(
|
|
credentialsAmount,
|
|
outputs,
|
|
updatedOutputs,
|
|
feeRateInt,
|
|
memo: memo,
|
|
hasSilentPayment: hasSilentPayment,
|
|
coinTypeToSpendFrom: coinTypeToSpendFrom,
|
|
);
|
|
}
|
|
|
|
if (walletInfo.isHardwareWallet) {
|
|
final transaction = await buildHardwareWalletTransaction(
|
|
utxos: estimatedTx.utxos,
|
|
outputs: updatedOutputs,
|
|
publicKeys: estimatedTx.publicKeys,
|
|
fee: BigInt.from(estimatedTx.fee),
|
|
network: network,
|
|
memo: estimatedTx.memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: true,
|
|
);
|
|
|
|
return PendingBitcoinTransaction(
|
|
transaction,
|
|
type,
|
|
sendWorker: sendWorker,
|
|
amount: estimatedTx.amount,
|
|
fee: estimatedTx.fee,
|
|
feeRate: feeRateInt.toString(),
|
|
hasChange: estimatedTx.hasChange,
|
|
isSendAll: estimatedTx.isSendAll,
|
|
hasTaprootInputs: false, // ToDo: (Konsti) Support Taproot
|
|
)..addListener((transaction) async {
|
|
transactionHistory.addOne(transaction);
|
|
await updateBalance();
|
|
});
|
|
}
|
|
|
|
BasedBitcoinTransacationBuilder txb;
|
|
if (network is BitcoinCashNetwork) {
|
|
txb = ForkedTransactionBuilder(
|
|
utxos: estimatedTx.utxos,
|
|
outputs: updatedOutputs,
|
|
fee: BigInt.from(estimatedTx.fee),
|
|
network: network,
|
|
memo: estimatedTx.memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: !estimatedTx.spendsUnconfirmedTX,
|
|
);
|
|
} else {
|
|
txb = BitcoinTransactionBuilder(
|
|
utxos: estimatedTx.utxos,
|
|
outputs: updatedOutputs,
|
|
fee: BigInt.from(estimatedTx.fee),
|
|
network: network,
|
|
memo: estimatedTx.memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: !estimatedTx.spendsUnconfirmedTX,
|
|
);
|
|
}
|
|
|
|
bool hasTaprootInputs = false;
|
|
|
|
final transaction = txb.buildTransaction((txDigest, utxo, publicKey, sighash) {
|
|
String error = "Cannot find private key.";
|
|
|
|
ECPrivateInfo? key;
|
|
|
|
if (estimatedTx.inputPrivKeyInfos.isEmpty) {
|
|
error += "\nNo private keys generated.";
|
|
} else {
|
|
error += "\nAddress: ${utxo.ownerDetails.address.toAddress(network)}";
|
|
|
|
key = estimatedTx.inputPrivKeyInfos.firstWhereOrNull((element) {
|
|
final elemPubkey = element.privkey.getPublic().toHex();
|
|
if (elemPubkey == publicKey) {
|
|
return true;
|
|
} else {
|
|
error += "\nExpected: $publicKey";
|
|
error += "\nPubkey: $elemPubkey";
|
|
return false;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (key == null) {
|
|
throw Exception(error);
|
|
}
|
|
|
|
if (utxo.utxo.isP2tr()) {
|
|
hasTaprootInputs = true;
|
|
return key.privkey.signTapRoot(
|
|
txDigest,
|
|
sighash: sighash,
|
|
tweak: utxo.utxo.isSilentPayment != true,
|
|
);
|
|
} else {
|
|
return key.privkey.signInput(txDigest, sigHash: sighash);
|
|
}
|
|
});
|
|
|
|
return PendingBitcoinTransaction(
|
|
transaction,
|
|
type,
|
|
sendWorker: sendWorker,
|
|
amount: estimatedTx.amount,
|
|
fee: estimatedTx.fee,
|
|
feeRate: feeRateInt.toString(),
|
|
hasChange: estimatedTx.hasChange,
|
|
isSendAll: estimatedTx.isSendAll,
|
|
hasTaprootInputs: hasTaprootInputs,
|
|
utxos: estimatedTx.utxos,
|
|
)..addListener((transaction) async {
|
|
transactionHistory.addOne(transaction);
|
|
if (estimatedTx.spendsSilentPayment) {
|
|
transactionHistory.transactions.values.forEach((tx) {
|
|
tx.unspents?.removeWhere(
|
|
(unspent) => estimatedTx.utxos.any((e) => e.utxo.txHash == unspent.hash));
|
|
transactionHistory.addOne(tx);
|
|
});
|
|
}
|
|
|
|
unspentCoins
|
|
.removeWhere((utxo) => estimatedTx.utxos.any((e) => e.utxo.txHash == utxo.hash));
|
|
|
|
await updateBalance();
|
|
});
|
|
} catch (e) {
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
void setLedgerConnection(ledger.LedgerConnection connection) => throw UnimplementedError();
|
|
|
|
Future<BtcTransaction> buildHardwareWalletTransaction({
|
|
required List<BitcoinBaseOutput> outputs,
|
|
required BigInt fee,
|
|
required BasedUtxoNetwork network,
|
|
required List<UtxoWithAddress> utxos,
|
|
required Map<String, PublicKeyWithDerivationPath> publicKeys,
|
|
String? memo,
|
|
bool enableRBF = false,
|
|
BitcoinOrdering inputOrdering = BitcoinOrdering.bip69,
|
|
BitcoinOrdering outputOrdering = BitcoinOrdering.bip69,
|
|
}) async =>
|
|
throw UnimplementedError();
|
|
|
|
String toJSON() => json.encode({
|
|
'mnemonic': _mnemonic,
|
|
'xpub': xpub,
|
|
'passphrase': passphrase ?? '',
|
|
'walletAddresses': walletAddresses.toJson(),
|
|
'address_page_type': walletInfo.addressPageType == null
|
|
? SegwitAddresType.p2wpkh.toString()
|
|
: walletInfo.addressPageType.toString(),
|
|
'balance': balance[currency]?.toJSON(),
|
|
'derivationTypeIndex': walletInfo.derivationInfo?.derivationType?.index,
|
|
'derivationPath': walletInfo.derivationInfo?.derivationPath,
|
|
'alwaysScan': alwaysScan,
|
|
'unspents': unspentCoins.map((e) => e.toJson()).toList(),
|
|
});
|
|
|
|
int feeAmountForPriority(TransactionPriority priority, int inputsCount, int outputsCount,
|
|
{int? size}) =>
|
|
feeRate(priority) * (size ?? estimatedTransactionSize(inputsCount, outputsCount));
|
|
|
|
int feeAmountWithFeeRate(int feeRate, int inputsCount, int outputsCount, {int? size}) =>
|
|
feeRate * (size ?? estimatedTransactionSize(inputsCount, outputsCount));
|
|
|
|
@override
|
|
int calculateEstimatedFee(TransactionPriority? priority, int? amount,
|
|
{int? outputsCount, int? size}) {
|
|
if (priority is BitcoinTransactionPriority) {
|
|
return calculateEstimatedFeeWithFeeRate(
|
|
feeRate(priority),
|
|
amount,
|
|
outputsCount: outputsCount,
|
|
size: size,
|
|
);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int calculateEstimatedFeeWithFeeRate(int feeRate, int? amount, {int? outputsCount, int? size}) {
|
|
if (size != null) {
|
|
return feeAmountWithFeeRate(feeRate, 0, 0, size: size);
|
|
}
|
|
|
|
int inputsCount = 0;
|
|
|
|
if (amount != null) {
|
|
int totalValue = 0;
|
|
|
|
for (final input in unspentCoins) {
|
|
if (totalValue >= amount) {
|
|
break;
|
|
}
|
|
|
|
if (input.isSending) {
|
|
totalValue += input.value;
|
|
inputsCount += 1;
|
|
}
|
|
}
|
|
|
|
if (totalValue < amount) return 0;
|
|
} else {
|
|
for (final input in unspentCoins) {
|
|
if (input.isSending) {
|
|
inputsCount += 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If send all, then we have no change value
|
|
final _outputsCount = outputsCount ?? (amount != null ? 2 : 1);
|
|
|
|
return feeAmountWithFeeRate(feeRate, inputsCount, _outputsCount);
|
|
}
|
|
|
|
@override
|
|
Future<void> save() async {
|
|
if (!(await WalletKeysFile.hasKeysFile(walletInfo.name, walletInfo.type))) {
|
|
await saveKeysFile(_password, encryptionFileUtils);
|
|
await saveKeysFile(_password, encryptionFileUtils, true);
|
|
}
|
|
|
|
final path = await makePath();
|
|
await encryptionFileUtils.write(path: path, password: _password, data: toJSON());
|
|
await transactionHistory.save();
|
|
}
|
|
|
|
@override
|
|
Future<void> renameWalletFiles(String newWalletName) async {
|
|
final currentWalletPath = await pathForWallet(name: walletInfo.name, type: type);
|
|
final currentWalletFile = File(currentWalletPath);
|
|
|
|
final currentDirPath = await pathForWalletDir(name: walletInfo.name, type: type);
|
|
final currentTransactionsFile = File('$currentDirPath/$transactionsHistoryFileName');
|
|
|
|
// Copies current wallet files into new wallet name's dir and files
|
|
if (currentWalletFile.existsSync()) {
|
|
final newWalletPath = await pathForWallet(name: newWalletName, type: type);
|
|
await currentWalletFile.copy(newWalletPath);
|
|
}
|
|
if (currentTransactionsFile.existsSync()) {
|
|
final newDirPath = await pathForWalletDir(name: newWalletName, type: type);
|
|
await currentTransactionsFile.copy('$newDirPath/$transactionsHistoryFileName');
|
|
}
|
|
|
|
// Delete old name's dir and files
|
|
await Directory(currentDirPath).delete(recursive: true);
|
|
}
|
|
|
|
@override
|
|
Future<void> changePassword(String password) async {
|
|
_password = password;
|
|
await save();
|
|
await transactionHistory.changePassword(password);
|
|
}
|
|
|
|
@override
|
|
Future<void> rescan({required int height}) async {
|
|
throw UnimplementedError();
|
|
}
|
|
|
|
@override
|
|
Future<void> close({required bool shouldCleanup}) async {
|
|
try {
|
|
_workerIsolate!.kill(priority: Isolate.immediate);
|
|
await _workerSubscription?.cancel();
|
|
receivePort?.close();
|
|
} catch (_) {}
|
|
_autoSaveTimer?.cancel();
|
|
_updateFeeRateTimer?.cancel();
|
|
}
|
|
|
|
@action
|
|
Future<void> updateAllUnspents() async {
|
|
workerSendPort!.send(
|
|
ElectrumWorkerListUnspentRequest(
|
|
scripthashes: walletAddresses.allScriptHashes.toList(),
|
|
).toJson(),
|
|
);
|
|
}
|
|
|
|
@action
|
|
void updateCoin(BitcoinUnspent coin) {
|
|
final coinInfoList = unspentCoinsInfo.values.where(
|
|
(element) =>
|
|
element.walletId.contains(id) &&
|
|
element.hash.contains(coin.hash) &&
|
|
element.vout == coin.vout,
|
|
);
|
|
|
|
if (coinInfoList.isNotEmpty) {
|
|
final coinInfo = coinInfoList.first;
|
|
|
|
coin.isFrozen = coinInfo.isFrozen;
|
|
coin.isSending = coinInfo.isSending;
|
|
coin.note = coinInfo.note;
|
|
} else {
|
|
addCoinInfo(coin);
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> onUnspentResponse(Map<String, List<ElectrumUtxo>> unspents) async {
|
|
final updatedUnspentCoins = <BitcoinUnspent>[];
|
|
|
|
await Future.wait(unspents.entries.map((entry) async {
|
|
final unspent = entry.value;
|
|
final scriptHash = entry.key;
|
|
|
|
final addressRecord = walletAddresses.allAddresses.firstWhereOrNull(
|
|
(element) => element.scriptHash == scriptHash,
|
|
);
|
|
|
|
if (addressRecord == null) {
|
|
return null;
|
|
}
|
|
|
|
await Future.wait(unspent.map((unspent) async {
|
|
final coin = BitcoinUnspent.fromJSON(addressRecord, unspent.toJson());
|
|
coin.isChange = addressRecord.isChange;
|
|
final tx = await fetchTransactionInfo(hash: coin.hash);
|
|
if (tx != null) {
|
|
coin.confirmations = tx.confirmations;
|
|
}
|
|
|
|
updatedUnspentCoins.add(coin);
|
|
}));
|
|
}));
|
|
|
|
unspentCoins.addAll(updatedUnspentCoins);
|
|
unspentCoins.forEach(updateCoin);
|
|
|
|
await refreshUnspentCoinsInfo();
|
|
|
|
_syncedTimes++;
|
|
if (_syncedTimes == 3) {
|
|
syncStatus = SyncedSyncStatus();
|
|
}
|
|
}
|
|
|
|
@action
|
|
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,
|
|
isSilentPayment: coin.bitcoinAddressRecord is BitcoinReceivedSPAddressRecord,
|
|
);
|
|
|
|
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) && element.vout == coin.vout);
|
|
|
|
if (existUnspentCoins.isEmpty) {
|
|
keys.add(element.key);
|
|
}
|
|
});
|
|
}
|
|
|
|
if (keys.isNotEmpty) {
|
|
await unspentCoinsInfo.deleteAll(keys);
|
|
}
|
|
} catch (e) {
|
|
print("refreshUnspentCoinsInfo $e");
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> onHeadersResponse(ElectrumHeaderResponse response) async {
|
|
currentChainTip = response.height;
|
|
|
|
bool updated = false;
|
|
transactionHistory.transactions.values.forEach((tx) {
|
|
if (tx.height != null && tx.height! > 0) {
|
|
final newConfirmations = currentChainTip! - tx.height! + 1;
|
|
|
|
if (tx.confirmations != newConfirmations) {
|
|
tx.confirmations = newConfirmations;
|
|
tx.isPending = tx.confirmations == 0;
|
|
updated = true;
|
|
}
|
|
}
|
|
});
|
|
|
|
if (updated) {
|
|
await save();
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> subscribeForHeaders() async {
|
|
if (_chainTipListenerOn) return;
|
|
|
|
workerSendPort!.send(ElectrumWorkerHeadersSubscribeRequest().toJson());
|
|
_chainTipListenerOn = true;
|
|
}
|
|
|
|
@action
|
|
Future<void> onHistoriesResponse(List<AddressHistoriesResponse> histories) async {
|
|
if (histories.isEmpty || _updatingHistories) {
|
|
_updatingHistories = false;
|
|
_syncedTimes++;
|
|
if (_syncedTimes == 3) {
|
|
syncStatus = SyncedSyncStatus();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
_updatingHistories = true;
|
|
|
|
final addressesWithHistory = <BitcoinAddressRecord>[];
|
|
BitcoinAddressType? lastDiscoveredType;
|
|
|
|
for (final addressHistory in histories) {
|
|
final txs = addressHistory.txs;
|
|
|
|
if (txs.isNotEmpty) {
|
|
final addressRecord = addressHistory.addressRecord;
|
|
final isChange = addressRecord.isChange;
|
|
|
|
final addressList =
|
|
(isChange ? walletAddresses.changeAddresses : walletAddresses.receiveAddresses).where(
|
|
(element) =>
|
|
element.addressType == addressRecord.addressType &&
|
|
element.derivationType == addressRecord.derivationType);
|
|
final totalAddresses = addressList.length;
|
|
|
|
final gapLimit = (isChange
|
|
? ElectrumWalletAddressesBase.defaultChangeAddressesCount
|
|
: ElectrumWalletAddressesBase.defaultReceiveAddressesCount);
|
|
|
|
addressesWithHistory.add(addressRecord);
|
|
|
|
for (final tx in txs) {
|
|
transactionHistory.addOne(tx);
|
|
}
|
|
|
|
final hasUsedAddressesUnderGap = addressRecord.index >= totalAddresses - gapLimit;
|
|
|
|
if (hasUsedAddressesUnderGap && lastDiscoveredType != addressRecord.addressType) {
|
|
lastDiscoveredType = addressRecord.addressType;
|
|
|
|
// Discover new addresses for the same address type until the gap limit is respected
|
|
final newAddresses = await walletAddresses.discoverNewAddresses(
|
|
isChange: isChange,
|
|
derivationType: addressRecord.derivationType,
|
|
addressType: addressRecord.addressType,
|
|
derivationInfo: BitcoinAddressUtils.getDerivationFromType(
|
|
addressRecord.addressType,
|
|
isElectrum: [
|
|
CWBitcoinDerivationType.electrum,
|
|
CWBitcoinDerivationType.old_electrum,
|
|
].contains(addressRecord.derivationType),
|
|
),
|
|
);
|
|
|
|
final newAddressList =
|
|
(isChange ? walletAddresses.changeAddresses : walletAddresses.receiveAddresses).where(
|
|
(element) =>
|
|
element.addressType == addressRecord.addressType &&
|
|
element.derivationType == addressRecord.derivationType);
|
|
print(
|
|
"discovered ${newAddresses.length} new addresses, new total: ${newAddressList.length}");
|
|
|
|
if (newAddresses.isNotEmpty) {
|
|
// Update the transactions for the new discovered addresses
|
|
await updateTransactions(newAddresses);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (addressesWithHistory.isNotEmpty) {
|
|
walletAddresses.updateAdresses(addressesWithHistory);
|
|
}
|
|
|
|
walletAddresses.updateHiddenAddresses();
|
|
_updatingHistories = false;
|
|
|
|
_syncedTimes++;
|
|
if (_syncedTimes == 3) {
|
|
syncStatus = SyncedSyncStatus();
|
|
}
|
|
}
|
|
|
|
Future<String?> canReplaceByFee(ElectrumTransactionInfo tx) async {
|
|
try {
|
|
final bundle = await getTransactionExpanded(hash: tx.txHash);
|
|
_updateInputsAndOutputs(tx, bundle);
|
|
if (bundle.confirmations > 0) return null;
|
|
return bundle.originalTransaction.canReplaceByFee ? bundle.originalTransaction.toHex() : null;
|
|
} catch (e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
Future<bool> isChangeSufficientForFee(String txId, int newFee) async {
|
|
final bundle = await getTransactionExpanded(hash: txId);
|
|
final outputs = bundle.originalTransaction.outputs;
|
|
|
|
final changeAddresses = walletAddresses.allAddresses.where((element) => element.isChange);
|
|
|
|
// look for a change address in the outputs
|
|
final changeOutput = outputs.firstWhereOrNull((output) => changeAddresses.any((element) =>
|
|
element.address ==
|
|
BitcoinAddressUtils.addressFromOutputScript(output.scriptPubKey, network)));
|
|
|
|
var allInputsAmount = 0;
|
|
|
|
for (int i = 0; i < bundle.originalTransaction.inputs.length; i++) {
|
|
final input = bundle.originalTransaction.inputs[i];
|
|
final inputTransaction = bundle.ins[i];
|
|
final vout = input.txIndex;
|
|
final outTransaction = inputTransaction.outputs[vout];
|
|
allInputsAmount += outTransaction.amount.toInt();
|
|
}
|
|
|
|
int totalOutAmount = bundle.originalTransaction.outputs
|
|
.fold<int>(0, (previousValue, element) => previousValue + element.amount.toInt());
|
|
|
|
var currentFee = allInputsAmount - totalOutAmount;
|
|
|
|
int remainingFee = (newFee - currentFee > 0) ? newFee - currentFee : newFee;
|
|
|
|
return changeOutput != null && changeOutput.amount.toInt() - remainingFee >= 0;
|
|
}
|
|
|
|
Future<PendingBitcoinTransaction> replaceByFee(String hash, int newFee) async {
|
|
try {
|
|
final bundle = await getTransactionExpanded(hash: hash);
|
|
|
|
final utxos = <UtxoWithAddress>[];
|
|
List<ECPrivate> privateKeys = [];
|
|
|
|
var allInputsAmount = 0;
|
|
String? memo;
|
|
|
|
// Add inputs
|
|
for (var i = 0; i < bundle.originalTransaction.inputs.length; i++) {
|
|
final input = bundle.originalTransaction.inputs[i];
|
|
final inputTransaction = bundle.ins[i];
|
|
final vout = input.txIndex;
|
|
final outTransaction = inputTransaction.outputs[vout];
|
|
final address =
|
|
BitcoinAddressUtils.addressFromOutputScript(outTransaction.scriptPubKey, network);
|
|
// allInputsAmount += outTransaction.amount.toInt();
|
|
|
|
final addressRecord =
|
|
walletAddresses.allAddresses.firstWhere((element) => element.address == address);
|
|
|
|
final btcAddress = RegexUtils.addressTypeFromStr(addressRecord.address, network);
|
|
final path = addressRecord.derivationInfo.derivationPath
|
|
.addElem(Bip32KeyIndex(
|
|
BitcoinAddressUtils.getAccountFromChange(addressRecord.isChange),
|
|
))
|
|
.addElem(Bip32KeyIndex(addressRecord.index));
|
|
|
|
final privkey = ECPrivate.fromBip32(bip32: bip32.derive(path));
|
|
|
|
privateKeys.add(privkey);
|
|
|
|
utxos.add(
|
|
UtxoWithAddress(
|
|
utxo: BitcoinUtxo(
|
|
txHash: input.txId,
|
|
value: outTransaction.amount,
|
|
vout: vout,
|
|
scriptType: BitcoinAddressUtils.getScriptType(btcAddress),
|
|
),
|
|
ownerDetails:
|
|
UtxoAddressDetails(publicKey: privkey.getPublic().toHex(), address: btcAddress),
|
|
),
|
|
);
|
|
}
|
|
|
|
// Create a list of available outputs
|
|
final outputs = <BitcoinOutput>[];
|
|
for (final out in bundle.originalTransaction.outputs) {
|
|
// Check if the script contains OP_RETURN
|
|
final script = out.scriptPubKey.script;
|
|
if (script.contains('OP_RETURN') && memo == null) {
|
|
final index = script.indexOf('OP_RETURN');
|
|
if (index + 1 <= script.length) {
|
|
try {
|
|
final opReturnData = script[index + 1].toString();
|
|
memo = StringUtils.decode(BytesUtils.fromHexString(opReturnData));
|
|
continue;
|
|
} catch (_) {
|
|
throw Exception('Cannot decode OP_RETURN data');
|
|
}
|
|
}
|
|
}
|
|
|
|
final address = BitcoinAddressUtils.addressFromOutputScript(out.scriptPubKey, network);
|
|
final btcAddress = RegexUtils.addressTypeFromStr(address, network);
|
|
outputs.add(BitcoinOutput(address: btcAddress, value: BigInt.from(out.amount.toInt())));
|
|
}
|
|
|
|
// Calculate the total amount and fees
|
|
int totalOutAmount =
|
|
outputs.fold<int>(0, (previousValue, output) => previousValue + output.value.toInt());
|
|
int currentFee = allInputsAmount - totalOutAmount;
|
|
int remainingFee = newFee - currentFee;
|
|
|
|
if (remainingFee <= 0) {
|
|
throw Exception("New fee must be higher than the current fee.");
|
|
}
|
|
|
|
// Deduct Remaining Fee from Main Outputs
|
|
if (remainingFee > 0) {
|
|
for (int i = outputs.length - 1; i >= 0; i--) {
|
|
int outputAmount = outputs[i].value.toInt();
|
|
|
|
if (outputAmount > _dustAmount) {
|
|
int deduction = (outputAmount - _dustAmount >= remainingFee)
|
|
? remainingFee
|
|
: outputAmount - _dustAmount;
|
|
outputs[i] = BitcoinOutput(
|
|
address: outputs[i].address, value: BigInt.from(outputAmount - deduction));
|
|
remainingFee -= deduction;
|
|
|
|
if (remainingFee <= 0) break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Final check if the remaining fee couldn't be deducted
|
|
if (remainingFee > 0) {
|
|
throw Exception("Not enough funds to cover the fee.");
|
|
}
|
|
|
|
// Identify all change outputs
|
|
final changeAddresses = walletAddresses.allAddresses.where((element) => element.isChange);
|
|
final List<BitcoinOutput> changeOutputs = outputs
|
|
.where((output) => changeAddresses
|
|
.any((element) => element.address == output.address.toAddress(network)))
|
|
.toList();
|
|
|
|
int totalChangeAmount =
|
|
changeOutputs.fold<int>(0, (sum, output) => sum + output.value.toInt());
|
|
|
|
// The final amount that the receiver will receive
|
|
int sendingAmount = allInputsAmount - newFee - totalChangeAmount;
|
|
|
|
final txb = BitcoinTransactionBuilder(
|
|
utxos: utxos,
|
|
outputs: outputs,
|
|
fee: BigInt.from(newFee),
|
|
network: network,
|
|
memo: memo,
|
|
outputOrdering: BitcoinOrdering.none,
|
|
enableRBF: true,
|
|
);
|
|
|
|
final transaction = txb.buildTransaction((txDigest, utxo, publicKey, sighash) {
|
|
final key =
|
|
privateKeys.firstWhereOrNull((element) => element.getPublic().toHex() == publicKey);
|
|
|
|
if (key == null) {
|
|
throw Exception("Cannot find private key");
|
|
}
|
|
|
|
if (utxo.utxo.isP2tr()) {
|
|
return key.signTapRoot(txDigest, sighash: sighash);
|
|
} else {
|
|
return key.signInput(txDigest, sigHash: sighash);
|
|
}
|
|
});
|
|
|
|
return PendingBitcoinTransaction(
|
|
transaction,
|
|
type,
|
|
sendWorker: sendWorker,
|
|
amount: sendingAmount,
|
|
fee: newFee,
|
|
hasChange: changeOutputs.isNotEmpty,
|
|
feeRate: newFee.toString(),
|
|
)..addListener((transaction) async {
|
|
transactionHistory.transactions.values.forEach((tx) {
|
|
if (tx.id == hash) {
|
|
tx.isReplaced = true;
|
|
tx.isPending = false;
|
|
transactionHistory.addOne(tx);
|
|
}
|
|
});
|
|
transactionHistory.addOne(transaction);
|
|
await updateBalance();
|
|
});
|
|
} catch (e) {
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
Future<ElectrumTransactionBundle> getTransactionExpanded({required String hash}) async {
|
|
return await sendWorker(
|
|
ElectrumWorkerTxExpandedRequest(
|
|
txHash: hash,
|
|
currentChainTip: currentChainTip!,
|
|
mempoolAPIEnabled: mempoolAPIEnabled,
|
|
),
|
|
) as ElectrumTransactionBundle;
|
|
}
|
|
|
|
Future<ElectrumTransactionInfo?> fetchTransactionInfo({required String hash, int? height}) async {
|
|
try {
|
|
return ElectrumTransactionInfo.fromElectrumBundle(
|
|
await getTransactionExpanded(hash: hash),
|
|
walletInfo.type,
|
|
network,
|
|
addresses: walletAddresses.allAddresses.map((e) => e.address).toSet(),
|
|
height: height,
|
|
);
|
|
} catch (_) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
@override
|
|
@action
|
|
Future<Map<String, ElectrumTransactionInfo>> fetchTransactions() async {
|
|
throw UnimplementedError();
|
|
}
|
|
|
|
@action
|
|
Future<void> updateTransactions([List<BitcoinAddressRecord>? addresses]) async {
|
|
workerSendPort!.send(ElectrumWorkerGetHistoryRequest(
|
|
addresses: walletAddresses.allAddresses.toList(),
|
|
storedTxs: transactionHistory.transactions.values.toList(),
|
|
walletType: type,
|
|
// If we still don't have currentChainTip, txs will still be fetched but shown
|
|
// with confirmations as 0 but will be auto fixed on onHeadersResponse
|
|
chainTip: currentChainTip ?? getBitcoinHeightByDate(date: DateTime.now()),
|
|
network: network,
|
|
mempoolAPIEnabled: mempoolAPIEnabled,
|
|
).toJson());
|
|
}
|
|
|
|
@action
|
|
Future<void> subscribeForUpdates([Iterable<String>? unsubscribedScriptHashes]) async {
|
|
unsubscribedScriptHashes ??= walletAddresses.allScriptHashes.where(
|
|
(sh) => !scripthashesListening.contains(sh),
|
|
);
|
|
|
|
Map<String, String> scripthashByAddress = {};
|
|
walletAddresses.allAddresses.forEach((addressRecord) {
|
|
scripthashByAddress[addressRecord.address] = addressRecord.scriptHash;
|
|
});
|
|
|
|
workerSendPort!.send(
|
|
ElectrumWorkerScripthashesSubscribeRequest(
|
|
scripthashByAddress: scripthashByAddress,
|
|
).toJson(),
|
|
);
|
|
|
|
scripthashesListening.addAll(scripthashByAddress.values);
|
|
}
|
|
|
|
@action
|
|
void onBalanceResponse(ElectrumBalance balanceResult) {
|
|
var totalFrozen = 0;
|
|
var totalConfirmed = balanceResult.confirmed;
|
|
var totalUnconfirmed = balanceResult.unconfirmed;
|
|
|
|
unspentCoins.forInfo(unspentCoinsInfo.values).forEach((unspentCoinInfo) {
|
|
if (unspentCoinInfo.isFrozen) {
|
|
totalFrozen += unspentCoinInfo.value;
|
|
}
|
|
});
|
|
|
|
balance[currency] = ElectrumBalance(
|
|
confirmed: totalConfirmed,
|
|
unconfirmed: totalUnconfirmed,
|
|
frozen: totalFrozen,
|
|
);
|
|
|
|
_syncedTimes++;
|
|
if (_syncedTimes == 3) {
|
|
syncStatus = SyncedSyncStatus();
|
|
}
|
|
}
|
|
|
|
@action
|
|
Future<void> updateBalance() async {
|
|
workerSendPort!.send(ElectrumWorkerGetBalanceRequest(
|
|
scripthashes: walletAddresses.allScriptHashes,
|
|
).toJson());
|
|
}
|
|
|
|
@override
|
|
void setExceptionHandler(void Function(FlutterErrorDetails) onError) => _onError = onError;
|
|
|
|
Future<String> signMessage(String message, {String? address = null}) async {
|
|
final record = walletAddresses.getFromAddresses(address!);
|
|
|
|
final path = Bip32PathParser.parse(walletInfo.derivationInfo!.derivationPath!)
|
|
.addElem(
|
|
Bip32KeyIndex(BitcoinAddressUtils.getAccountFromChange(record.isChange)),
|
|
)
|
|
.addElem(Bip32KeyIndex(record.index));
|
|
|
|
final priv = ECPrivate.fromHex(bip32.derive(path).privateKey.toHex());
|
|
|
|
final hexEncoded = priv.signMessage(StringUtils.encode(message));
|
|
final decodedSig = hex.decode(hexEncoded);
|
|
return base64Encode(decodedSig);
|
|
}
|
|
|
|
@override
|
|
Future<bool> verifyMessage(String message, String signature, {String? address = null}) async {
|
|
if (address == null) {
|
|
return false;
|
|
}
|
|
|
|
List<int> sigDecodedBytes = [];
|
|
|
|
if (signature.endsWith('=')) {
|
|
sigDecodedBytes = base64.decode(signature);
|
|
} else {
|
|
sigDecodedBytes = BytesUtils.fromHexString(signature);
|
|
}
|
|
|
|
if (sigDecodedBytes.length != 64 && sigDecodedBytes.length != 65) {
|
|
throw ArgumentException(
|
|
"signature must be 64 bytes without recover-id or 65 bytes with recover-id");
|
|
}
|
|
|
|
String messagePrefix = '\x18Bitcoin Signed Message:\n';
|
|
final messageHash = QuickCrypto.sha256Hash(
|
|
BitcoinSignerUtils.magicMessage(StringUtils.encode(message), messagePrefix));
|
|
|
|
List<int> correctSignature =
|
|
sigDecodedBytes.length == 65 ? sigDecodedBytes.sublist(1) : List.from(sigDecodedBytes);
|
|
List<int> rBytes = correctSignature.sublist(0, 32);
|
|
List<int> sBytes = correctSignature.sublist(32);
|
|
final sig = ECDSASignature(BigintUtils.fromBytes(rBytes), BigintUtils.fromBytes(sBytes));
|
|
|
|
List<int> possibleRecoverIds = [0, 1];
|
|
|
|
final baseAddress = RegexUtils.addressTypeFromStr(address, network);
|
|
|
|
for (int recoveryId in possibleRecoverIds) {
|
|
final pubKey = sig.recoverPublicKey(messageHash, Curves.generatorSecp256k1, recoveryId);
|
|
|
|
final recoveredPub = ECPublic.fromBytes(pubKey!.toBytes());
|
|
|
|
String? recoveredAddress;
|
|
|
|
if (baseAddress is P2pkAddress) {
|
|
recoveredAddress = recoveredPub.toP2pkAddress().toAddress(network);
|
|
} else if (baseAddress is P2pkhAddress) {
|
|
recoveredAddress = recoveredPub.toP2pkhAddress().toAddress(network);
|
|
} else if (baseAddress is P2wshAddress) {
|
|
recoveredAddress = recoveredPub.toP2wshAddress().toAddress(network);
|
|
} else if (baseAddress is P2wpkhAddress) {
|
|
recoveredAddress = recoveredPub.toP2wpkhAddress().toAddress(network);
|
|
}
|
|
|
|
if (recoveredAddress == address) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
@action
|
|
void _onConnectionStatusChange(ConnectionStatus status) {
|
|
switch (status) {
|
|
case ConnectionStatus.connected:
|
|
if (syncStatus is NotConnectedSyncStatus ||
|
|
syncStatus is LostConnectionSyncStatus ||
|
|
syncStatus is ConnectingSyncStatus) {
|
|
syncStatus = ConnectedSyncStatus();
|
|
}
|
|
|
|
break;
|
|
case ConnectionStatus.disconnected:
|
|
if (syncStatus is! NotConnectedSyncStatus &&
|
|
syncStatus is! ConnectingSyncStatus &&
|
|
syncStatus is! SynchronizingSyncStatus) {
|
|
syncStatus = NotConnectedSyncStatus();
|
|
}
|
|
break;
|
|
case ConnectionStatus.failed:
|
|
if (syncStatus is! LostConnectionSyncStatus) {
|
|
syncStatus = LostConnectionSyncStatus();
|
|
}
|
|
break;
|
|
case ConnectionStatus.connecting:
|
|
if (syncStatus is! ConnectingSyncStatus) {
|
|
syncStatus = ConnectingSyncStatus();
|
|
}
|
|
break;
|
|
default:
|
|
}
|
|
}
|
|
|
|
@action
|
|
void syncStatusReaction(SyncStatus syncStatus) {
|
|
final isDisconnectedStatus =
|
|
syncStatus is NotConnectedSyncStatus || syncStatus is LostConnectionSyncStatus;
|
|
|
|
if (syncStatus is ConnectingSyncStatus || isDisconnectedStatus) {
|
|
// Needs to re-subscribe to all scripthashes when reconnected
|
|
scripthashesListening = [];
|
|
_chainTipListenerOn = false;
|
|
}
|
|
|
|
if (isDisconnectedStatus) {
|
|
if (_isTryingToConnect) return;
|
|
|
|
_isTryingToConnect = true;
|
|
|
|
Timer(Duration(seconds: 5), () {
|
|
if (this.syncStatus is NotConnectedSyncStatus ||
|
|
this.syncStatus is LostConnectionSyncStatus) {
|
|
if (node == null) return;
|
|
|
|
connectToNode(node: this.node!);
|
|
}
|
|
_isTryingToConnect = false;
|
|
});
|
|
}
|
|
}
|
|
|
|
void _updateInputsAndOutputs(ElectrumTransactionInfo tx, ElectrumTransactionBundle bundle) {
|
|
tx.inputAddresses = tx.inputAddresses?.where((address) => address.isNotEmpty).toList();
|
|
|
|
if (tx.inputAddresses == null ||
|
|
tx.inputAddresses!.isEmpty ||
|
|
tx.outputAddresses == null ||
|
|
tx.outputAddresses!.isEmpty) {
|
|
List<String> inputAddresses = [];
|
|
List<String> outputAddresses = [];
|
|
|
|
for (int i = 0; i < bundle.originalTransaction.inputs.length; i++) {
|
|
final input = bundle.originalTransaction.inputs[i];
|
|
final inputTransaction = bundle.ins[i];
|
|
final vout = input.txIndex;
|
|
final outTransaction = inputTransaction.outputs[vout];
|
|
final address =
|
|
BitcoinAddressUtils.addressFromOutputScript(outTransaction.scriptPubKey, network);
|
|
|
|
if (address.isNotEmpty) inputAddresses.add(address);
|
|
}
|
|
|
|
for (int i = 0; i < bundle.originalTransaction.outputs.length; i++) {
|
|
final out = bundle.originalTransaction.outputs[i];
|
|
final address = BitcoinAddressUtils.addressFromOutputScript(out.scriptPubKey, network);
|
|
|
|
if (address.isNotEmpty) outputAddresses.add(address);
|
|
|
|
// Check if the script contains OP_RETURN
|
|
final script = out.scriptPubKey.script;
|
|
if (script.contains('OP_RETURN')) {
|
|
final index = script.indexOf('OP_RETURN');
|
|
if (index + 1 <= script.length) {
|
|
try {
|
|
final opReturnData = script[index + 1].toString();
|
|
final decodedString = StringUtils.decode(BytesUtils.fromHexString(opReturnData));
|
|
outputAddresses.add('OP_RETURN:$decodedString');
|
|
} catch (_) {
|
|
outputAddresses.add('OP_RETURN:');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
tx.inputAddresses = inputAddresses;
|
|
tx.outputAddresses = outputAddresses;
|
|
|
|
transactionHistory.addOne(tx);
|
|
}
|
|
}
|
|
}
|
|
|
|
class EstimatedTxResult {
|
|
EstimatedTxResult({
|
|
required this.utxos,
|
|
required this.inputPrivKeyInfos,
|
|
required this.publicKeys,
|
|
required this.fee,
|
|
required this.amount,
|
|
required this.hasChange,
|
|
required this.isSendAll,
|
|
this.memo,
|
|
required this.spendsSilentPayment,
|
|
required this.spendsUnconfirmedTX,
|
|
});
|
|
|
|
final List<UtxoWithAddress> utxos;
|
|
final List<ECPrivateInfo> inputPrivKeyInfos;
|
|
final Map<String, PublicKeyWithDerivationPath> publicKeys; // PubKey to derivationPath
|
|
final int fee;
|
|
final int amount;
|
|
final bool spendsSilentPayment;
|
|
|
|
// final bool sendsToSilentPayment;
|
|
final bool hasChange;
|
|
final bool isSendAll;
|
|
final String? memo;
|
|
final bool spendsUnconfirmedTX;
|
|
}
|
|
|
|
class PublicKeyWithDerivationPath {
|
|
const PublicKeyWithDerivationPath(this.publicKey, this.derivationPath);
|
|
|
|
final String derivationPath;
|
|
final String publicKey;
|
|
}
|
|
|
|
class TxCreateUtxoDetails {
|
|
final List<BitcoinUnspent> availableInputs;
|
|
final List<BitcoinUnspent> unconfirmedCoins;
|
|
final List<UtxoWithAddress> utxos;
|
|
final List<Outpoint> vinOutpoints;
|
|
final List<ECPrivateInfo> inputPrivKeyInfos;
|
|
final Map<String, PublicKeyWithDerivationPath> publicKeys; // PubKey to derivationPath
|
|
final int allInputsAmount;
|
|
final bool spendsSilentPayment;
|
|
final bool spendsUnconfirmedTX;
|
|
|
|
TxCreateUtxoDetails({
|
|
required this.availableInputs,
|
|
required this.unconfirmedCoins,
|
|
required this.utxos,
|
|
required this.vinOutpoints,
|
|
required this.inputPrivKeyInfos,
|
|
required this.publicKeys,
|
|
required this.allInputsAmount,
|
|
required this.spendsSilentPayment,
|
|
required this.spendsUnconfirmedTX,
|
|
});
|
|
}
|
|
|
|
class BitcoinUnspentCoins extends ObservableSet<BitcoinUnspent> {
|
|
BitcoinUnspentCoins() : super();
|
|
|
|
static BitcoinUnspentCoins of(Iterable<BitcoinUnspent> unspentCoins) {
|
|
final coins = BitcoinUnspentCoins();
|
|
coins.addAll(unspentCoins);
|
|
return coins;
|
|
}
|
|
|
|
List<UnspentCoinsInfo> forInfo(Iterable<UnspentCoinsInfo> unspentCoinsInfo) {
|
|
return unspentCoinsInfo.where((element) {
|
|
final info = this.firstWhereOrNull(
|
|
(info) =>
|
|
element.hash == info.hash &&
|
|
element.vout == info.vout &&
|
|
element.address == info.bitcoinAddressRecord.address &&
|
|
element.value == info.value,
|
|
);
|
|
|
|
return info != null;
|
|
}).toList();
|
|
}
|
|
|
|
List<BitcoinUnspent> fromInfo(Iterable<UnspentCoinsInfo> unspentCoinsInfo) {
|
|
return this.where((element) {
|
|
final info = unspentCoinsInfo.firstWhereOrNull(
|
|
(info) =>
|
|
element.hash == info.hash &&
|
|
element.vout == info.vout &&
|
|
element.bitcoinAddressRecord.address == info.address &&
|
|
element.value == info.value,
|
|
);
|
|
|
|
return info != null;
|
|
}).toList();
|
|
}
|
|
}
|