// /* // * This file is part of Stack Wallet. // * // * Copyright (c) 2023 Cypher Stack // * All Rights Reserved. // * The code is distributed under GPLv3 license, see LICENSE file for details. // * Generated by Cypher Stack on 2023-05-26 // * // */ // // import 'dart:async'; // import 'dart:convert'; // import 'dart:io'; // import 'dart:math'; // // import 'package:bech32/bech32.dart'; // import 'package:bip32/bip32.dart' as bip32; // import 'package:bip39/bip39.dart' as bip39; // import 'package:bitbox/bitbox.dart' as bitbox; // import 'package:bitcoindart/bitcoindart.dart'; // import 'package:bs58check/bs58check.dart' as bs58check; // import 'package:flutter/foundation.dart'; // import 'package:isar/isar.dart'; // import 'package:stackwallet/db/isar/main_db.dart'; // import 'package:stackwallet/electrumx_rpc/cached_electrumx_client.dart'; // import 'package:stackwallet/electrumx_rpc/electrumx_client.dart'; // import 'package:stackwallet/models/balance.dart'; // import 'package:stackwallet/models/isar/models/blockchain_data/address.dart' // as stack_address; // import 'package:stackwallet/models/isar/models/blockchain_data/v2/input_v2.dart'; // import 'package:stackwallet/models/isar/models/blockchain_data/v2/output_v2.dart'; // import 'package:stackwallet/models/isar/models/blockchain_data/v2/transaction_v2.dart'; // import 'package:stackwallet/models/isar/models/isar_models.dart' as isar_models; // import 'package:stackwallet/models/paymint/fee_object_model.dart'; // import 'package:stackwallet/models/signing_data.dart'; // import 'package:stackwallet/services/coins/bitcoincash/bch_utils.dart'; // import 'package:stackwallet/services/coins/bitcoincash/cashtokens.dart' as ct; // import 'package:stackwallet/services/coins/coin_service.dart'; // import 'package:stackwallet/services/event_bus/events/global/node_connection_status_changed_event.dart'; // import 'package:stackwallet/services/event_bus/events/global/refresh_percent_changed_event.dart'; // import 'package:stackwallet/services/event_bus/events/global/updated_in_background_event.dart'; // import 'package:stackwallet/services/event_bus/events/global/wallet_sync_status_changed_event.dart'; // import 'package:stackwallet/services/event_bus/global_event_bus.dart'; // import 'package:stackwallet/services/mixins/coin_control_interface.dart'; // import 'package:stackwallet/services/mixins/fusion_wallet_interface.dart'; // import 'package:stackwallet/services/mixins/wallet_cache.dart'; // import 'package:stackwallet/services/mixins/wallet_db.dart'; // import 'package:stackwallet/services/mixins/xpubable.dart'; // import 'package:stackwallet/services/node_service.dart'; // import 'package:stackwallet/services/transaction_notification_tracker.dart'; // import 'package:stackwallet/utilities/address_utils.dart'; // import 'package:stackwallet/utilities/amount/amount.dart'; // import 'package:stackwallet/utilities/bip32_utils.dart'; // import 'package:stackwallet/utilities/constants.dart'; // import 'package:stackwallet/utilities/default_nodes.dart'; // import 'package:stackwallet/utilities/enums/coin_enum.dart'; // import 'package:stackwallet/utilities/enums/derive_path_type_enum.dart'; // import 'package:stackwallet/utilities/enums/fee_rate_type_enum.dart'; // import 'package:stackwallet/utilities/extensions/impl/string.dart'; // import 'package:stackwallet/utilities/flutter_secure_storage_interface.dart'; // import 'package:stackwallet/utilities/format.dart'; // import 'package:stackwallet/utilities/logger.dart'; // import 'package:stackwallet/utilities/prefs.dart'; // import 'package:stackwallet/widgets/crypto_notifications.dart'; // import 'package:tuple/tuple.dart'; // import 'package:uuid/uuid.dart'; // // const int MINIMUM_CONFIRMATIONS = 0; // final Amount DUST_LIMIT = Amount( // rawValue: BigInt.from(546), // fractionDigits: Coin.particl.decimals, // ); // // const String GENESIS_HASH_MAINNET = // "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"; // const String GENESIS_HASH_TESTNET = // "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"; // // String constructDerivePath({ // required DerivePathType derivePathType, // required int networkWIF, // int account = 0, // required int chain, // required int index, // }) { // int coinType; // switch (networkWIF) { // case 0x80: // bch mainnet wif // switch (derivePathType) { // case DerivePathType.bip44: // coinType = 145; // bch mainnet // break; // case DerivePathType.bch44: // bitcoin.com wallet specific // coinType = 0; // bch mainnet // break; // default: // throw Exception( // "DerivePathType $derivePathType not supported for coinType"); // } // break; // case 0xef: // bch testnet wif // coinType = 1; // bch testnet // break; // default: // throw Exception("Invalid Bitcoincash network wif used!"); // } // // int purpose; // switch (derivePathType) { // case DerivePathType.bip44: // case DerivePathType.bch44: // purpose = 44; // break; // default: // throw Exception("DerivePathType $derivePathType not supported"); // } // // return "m/$purpose'/$coinType'/$account'/$chain/$index"; // } // // class BitcoinCashWallet extends CoinServiceAPI // with WalletCache, WalletDB, CoinControlInterface, FusionWalletInterface // implements XPubAble { // BitcoinCashWallet({ // required String walletId, // required String walletName, // required Coin coin, // required ElectrumXClient client, // required CachedElectrumXClient cachedClient, // required TransactionNotificationTracker tracker, // required SecureStorageInterface secureStore, // MainDB? mockableOverride, // }) { // txTracker = tracker; // _walletId = walletId; // _walletName = walletName; // _coin = coin; // _electrumXClient = client; // _cachedElectrumXClient = cachedClient; // _secureStore = secureStore; // initCache(walletId, coin); // initWalletDB(mockableOverride: mockableOverride); // initFusionInterface( // walletId: walletId, // coin: coin, // db: db, // getWalletCachedElectrumX: () => cachedElectrumXClient, // getNextUnusedChangeAddress: _getUnusedChangeAddresses, // getChainHeight: () async => chainHeight, // updateWalletUTXOS: _updateUTXOs, // mnemonic: mnemonicString, // mnemonicPassphrase: mnemonicPassphrase, // network: _network, // convertToScriptHash: _convertToScriptHash, // ); // initCoinControlInterface( // walletId: walletId, // walletName: walletName, // coin: coin, // db: db, // getChainHeight: () => chainHeight, // refreshedBalanceCallback: (balance) async { // _balance = balance; // await updateCachedBalance(_balance!); // }, // ); // } // // static const integrationTestFlag = // bool.fromEnvironment("IS_INTEGRATION_TEST"); // final _prefs = Prefs.instance; // // Timer? timer; // late final Coin _coin; // // late final TransactionNotificationTracker txTracker; // // NetworkType get _network { // switch (coin) { // case Coin.bitcoincash: // return bitcoincash; // case Coin.bitcoincashTestnet: // return bitcoincashtestnet; // default: // throw Exception("Bitcoincash network type not set!"); // } // } // // @override // Future> get utxos => db.getUTXOs(walletId).findAll(); // // @Deprecated("V2 soon (tm)") // @override // Future> get transactions => // db.getTransactions(walletId).sortByTimestampDesc().findAll(); // // @override // Coin get coin => _coin; // // @override // Future get currentReceivingAddress async => // (await _currentReceivingAddress).value; // // Future get _currentReceivingAddress async => // (await db // .getAddresses(walletId) // .filter() // .typeEqualTo(isar_models.AddressType.p2pkh) // .subTypeEqualTo(isar_models.AddressSubType.receiving) // .derivationPath((q) => q.not().valueStartsWith("m/44'/0'")) // .sortByDerivationIndexDesc() // .findFirst()) ?? // await _generateAddressForChain(0, 0, DerivePathTypeExt.primaryFor(coin)); // // @override // Future exit() async { // _hasCalledExit = true; // timer?.cancel(); // timer = null; // stopNetworkAlivePinging(); // } // // bool _hasCalledExit = false; // // @override // bool get hasCalledExit => _hasCalledExit; // // @override // Future get fees => _feeObject ??= _getFees(); // Future? _feeObject; // // @override // Future get maxFee async { // throw UnimplementedError("Not used in bch"); // } // // @override // Future> get mnemonic => _getMnemonicList(); // // @override // Future get mnemonicString => // _secureStore.read(key: '${_walletId}_mnemonic'); // // @override // Future get mnemonicPassphrase => _secureStore.read( // key: '${_walletId}_mnemonicPassphrase', // ); // // Future get chainHeight async { // try { // final result = await _electrumXClient.getBlockHeadTip(); // final height = result["height"] as int; // await updateCachedChainHeight(height); // if (height > storedChainHeight) { // GlobalEventBus.instance.fire( // UpdatedInBackgroundEvent( // "Updated current chain height in $walletId $walletName!", // walletId, // ), // ); // } // return height; // } catch (e, s) { // Logging.instance.log("Exception caught in chainHeight: $e\n$s", // level: LogLevel.Error); // return storedChainHeight; // } // } // // @override // int get storedChainHeight => getCachedChainHeight(); // // DerivePathType addressType({required String address}) { // Uint8List? decodeBase58; // Segwit? decodeBech32; // try { // if (bitbox.Address.detectFormat(address) == // bitbox.Address.formatCashAddr) { // if (validateCashAddr(address)) { // address = bitbox.Address.toLegacyAddress(address); // } else { // throw ArgumentError('$address is not currently supported'); // } // } // } catch (_) { // // invalid cash addr format // } // try { // decodeBase58 = bs58check.decode(address); // } catch (err) { // // Base58check decode fail // } // if (decodeBase58 != null) { // if (decodeBase58[0] == _network.pubKeyHash) { // // P2PKH // return DerivePathType.bip44; // } // // throw ArgumentError('Invalid version or Network mismatch'); // } else { // try { // decodeBech32 = segwit.decode(address); // } catch (err) { // // Bech32 decode fail // } // // if (decodeBech32 != null) { // if (_network.bech32 != decodeBech32.hrp) { // throw ArgumentError('Invalid prefix or Network mismatch'); // } // if (decodeBech32.version != 0) { // throw ArgumentError('Invalid address version'); // } // } // } // throw ArgumentError('$address has no matching Script'); // } // // bool longMutex = false; // // @override // Future recoverFromMnemonic({ // required String mnemonic, // String? mnemonicPassphrase, // required int maxUnusedAddressGap, // required int maxNumberOfIndexesToCheck, // required int height, // }) async { // longMutex = true; // final start = DateTime.now(); // try { // Logging.instance.log("IS_INTEGRATION_TEST: $integrationTestFlag", // level: LogLevel.Info); // if (!integrationTestFlag) { // final features = await electrumXClient.getServerFeatures(); // Logging.instance.log("features: $features", level: LogLevel.Info); // switch (coin) { // case Coin.bitcoincash: // if (features['genesis_hash'] != GENESIS_HASH_MAINNET) { // throw Exception("genesis hash does not match main net!"); // } // break; // case Coin.bitcoincashTestnet: // if (features['genesis_hash'] != GENESIS_HASH_TESTNET) { // throw Exception("genesis hash does not match test net!"); // } // break; // default: // throw Exception( // "Attempted to generate a BitcoinCashWallet using a non bch coin type: ${coin.name}"); // } // } // // check to make sure we aren't overwriting a mnemonic // // this should never fail // if ((await mnemonicString) != null || // (await this.mnemonicPassphrase) != null) { // longMutex = false; // throw Exception("Attempted to overwrite mnemonic on restore!"); // } // await _secureStore.write( // key: '${_walletId}_mnemonic', value: mnemonic.trim()); // await _secureStore.write( // key: '${_walletId}_mnemonicPassphrase', // value: mnemonicPassphrase ?? "", // ); // // await _recoverWalletFromBIP32SeedPhrase( // mnemonic: mnemonic.trim(), // mnemonicPassphrase: mnemonicPassphrase ?? "", // maxUnusedAddressGap: maxUnusedAddressGap, // maxNumberOfIndexesToCheck: maxNumberOfIndexesToCheck, // coin: coin, // ); // } catch (e, s) { // Logging.instance.log( // "Exception rethrown from recoverFromMnemonic(): $e\n$s", // level: LogLevel.Error); // longMutex = false; // rethrow; // } // longMutex = false; // // final end = DateTime.now(); // Logging.instance.log( // "$walletName recovery time: ${end.difference(start).inMilliseconds} millis", // level: LogLevel.Info); // } // // Future, DerivePathType, int>> _checkGaps( // int minNumberOfIndexesToCheck, // int maxUnusedAddressGap, // int txCountBatchSize, // bip32.BIP32 root, // DerivePathType type, // int chain, // ) async { // List addressArray = []; // int gapCounter = 0; // int highestIndexWithHistory = 0; // // // Scan addresses until the minimum required addresses have been scanned or // // until the highest index with activity, plus the gap limit, whichever is // // higher, so that we if there is activity above the minimum index, we don't // // miss it. // for (int index = 0; // index < // max(minNumberOfIndexesToCheck, // highestIndexWithHistory + maxUnusedAddressGap) && // gapCounter < maxUnusedAddressGap; // index += txCountBatchSize) { // List iterationsAddressArray = []; // Logging.instance.log( // "index: $index, \t GapCounter $chain ${type.name}: $gapCounter", // level: LogLevel.Info); // // final _id = "k_$index"; // Map txCountCallArgs = {}; // // for (int j = 0; j < txCountBatchSize; j++) { // final derivePath = constructDerivePath( // derivePathType: type, // networkWIF: root.network.wif, // chain: chain, // index: index + j, // ); // final node = await Bip32Utils.getBip32NodeFromRoot(root, derivePath); // // String addressString; // final data = PaymentData(pubkey: node.publicKey); // isar_models.AddressType addrType; // switch (type) { // case DerivePathType.bip44: // case DerivePathType.bch44: // addressString = P2PKH(data: data, network: _network).data.address!; // addrType = isar_models.AddressType.p2pkh; // addressString = bitbox.Address.toCashAddress(addressString); // break; // default: // throw Exception("DerivePathType $type not supported"); // } // // final address = isar_models.Address( // walletId: walletId, // value: addressString, // publicKey: node.publicKey, // type: addrType, // derivationIndex: index + j, // derivationPath: isar_models.DerivationPath()..value = derivePath, // subType: chain == 0 // ? isar_models.AddressSubType.receiving // : isar_models.AddressSubType.change, // ); // // addressArray.add(address); // // txCountCallArgs.addAll({ // "${_id}_$j": addressString, // }); // } // // // get address tx counts // final counts = await _getBatchTxCount(addresses: txCountCallArgs); // if (kDebugMode) { // print("Counts $counts"); // } // // check and add appropriate addresses // for (int k = 0; k < txCountBatchSize; k++) { // int count = counts["${_id}_$k"]!; // if (count > 0) { // iterationsAddressArray.add(txCountCallArgs["${_id}_$k"]!); // // // update highest // highestIndexWithHistory = index + k; // // // reset counter // gapCounter = 0; // } // // // increase counter when no tx history found // if (count == 0) { // gapCounter++; // } // } // // cache all the transactions while waiting for the current function to finish. // unawaited(getTransactionCacheEarly(iterationsAddressArray)); // } // return Tuple3(addressArray, type, highestIndexWithHistory); // } // // Future getTransactionCacheEarly(List allAddresses) async { // try { // final List> allTxHashes = // await _fetchHistory(allAddresses); // for (final txHash in allTxHashes) { // try { // unawaited(cachedElectrumXClient.getTransaction( // txHash: txHash["tx_hash"] as String, // verbose: true, // coin: coin, // )); // } catch (e) { // continue; // } // } // } catch (e) { // // // } // } // // Future _recoverWalletFromBIP32SeedPhrase({ // required String mnemonic, // required String mnemonicPassphrase, // int maxUnusedAddressGap = 50, // int maxNumberOfIndexesToCheck = 1000, // bool isRescan = false, // Coin? coin, // }) async { // longMutex = true; // // final root = await Bip32Utils.getBip32Root( // mnemonic, // mnemonicPassphrase, // _network, // ); // // final deriveTypes = [ // DerivePathType.bip44, // ]; // // if (coin != Coin.bitcoincashTestnet) { // deriveTypes.add(DerivePathType.bch44); // } // // final List, DerivePathType, int>>> // receiveFutures = []; // final List, DerivePathType, int>>> // changeFutures = []; // // const receiveChain = 0; // const changeChain = 1; // const indexZero = 0; // // // actual size is 24 due to p2pkh and p2sh so 12x2 // const txCountBatchSize = 12; // // try { // // receiving addresses // Logging.instance.log( // "checking receiving addresses...", // level: LogLevel.Info, // ); // // for (final type in deriveTypes) { // receiveFutures.add( // _checkGaps( // maxNumberOfIndexesToCheck, // maxUnusedAddressGap, // txCountBatchSize, // root, // type, // receiveChain, // ), // ); // } // // // change addresses // Logging.instance.log( // "checking change addresses...", // level: LogLevel.Info, // ); // for (final type in deriveTypes) { // changeFutures.add( // _checkGaps( // maxNumberOfIndexesToCheck, // maxUnusedAddressGap, // txCountBatchSize, // root, // type, // changeChain, // ), // ); // } // // // io limitations may require running these linearly instead // final futuresResult = await Future.wait([ // Future.wait(receiveFutures), // Future.wait(changeFutures), // ]); // // final receiveResults = futuresResult[0]; // final changeResults = futuresResult[1]; // // final List addressesToStore = []; // // int highestReceivingIndexWithHistory = 0; // // If restoring a wallet that never received any funds, then set receivingArray manually // // If we didn't do this, it'd store an empty array // for (final tuple in receiveResults) { // if (tuple.item1.isEmpty) { // final address = await _generateAddressForChain( // receiveChain, // indexZero, // tuple.item2, // ); // addressesToStore.add(address); // } else { // highestReceivingIndexWithHistory = max( // tuple.item3, // highestReceivingIndexWithHistory, // ); // addressesToStore.addAll(tuple.item1); // } // } // // int highestChangeIndexWithHistory = 0; // // If restoring a wallet that never sent any funds with change, then set changeArray // // manually. If we didn't do this, it'd store an empty array. // for (final tuple in changeResults) { // if (tuple.item1.isEmpty) { // final address = await _generateAddressForChain( // changeChain, // indexZero, // tuple.item2, // ); // addressesToStore.add(address); // } else { // highestChangeIndexWithHistory = max( // tuple.item3, // highestChangeIndexWithHistory, // ); // addressesToStore.addAll(tuple.item1); // } // } // // // remove extra addresses to help minimize risk of creating a large gap // addressesToStore.removeWhere((e) => // e.subType == isar_models.AddressSubType.change && // e.derivationIndex > highestChangeIndexWithHistory); // addressesToStore.removeWhere((e) => // e.subType == isar_models.AddressSubType.receiving && // e.derivationIndex > highestReceivingIndexWithHistory); // // if (isRescan) { // await db.updateOrPutAddresses(addressesToStore); // } else { // await db.putAddresses(addressesToStore); // } // // await Future.wait([ // _refreshTransactions(), // _updateUTXOs(), // ]); // // await Future.wait([ // updateCachedId(walletId), // updateCachedIsFavorite(false), // ]); // // longMutex = false; // } catch (e, s) { // Logging.instance.log( // "Exception rethrown from _recoverWalletFromBIP32SeedPhrase(): $e\n$s", // level: LogLevel.Info); // // longMutex = false; // rethrow; // } // } // // Future refreshIfThereIsNewData() async { // if (longMutex) return false; // if (_hasCalledExit) return false; // Logging.instance.log("refreshIfThereIsNewData", level: LogLevel.Info); // // try { // bool needsRefresh = false; // Logging.instance.log( // "notified unconfirmed transactions: ${txTracker.pendings}", // level: LogLevel.Info); // Set txnsToCheck = {}; // // for (final String txid in txTracker.pendings) { // if (!txTracker.wasNotifiedConfirmed(txid)) { // txnsToCheck.add(txid); // } // } // // for (String txid in txnsToCheck) { // final txn = await electrumXClient.getTransaction(txHash: txid); // var confirmations = txn["confirmations"]; // if (confirmations is! int) continue; // bool isUnconfirmed = confirmations < MINIMUM_CONFIRMATIONS; // if (!isUnconfirmed) { // // unconfirmedTxs = {}; // needsRefresh = true; // break; // } // } // if (!needsRefresh) { // var allOwnAddresses = await _fetchAllOwnAddresses(); // List> allTxs = await _fetchHistory( // allOwnAddresses.map((e) => e.value).toList(growable: false)); // for (Map transaction in allTxs) { // final txid = transaction['tx_hash'] as String; // if ((await db // .getTransactions(walletId) // .filter() // .txidMatches(txid) // .findFirst()) == // null) { // Logging.instance.log( // " txid not found in address history already ${transaction['tx_hash']}", // level: LogLevel.Info); // needsRefresh = true; // break; // } // } // } // return needsRefresh; // } catch (e, s) { // Logging.instance.log( // "Exception caught in refreshIfThereIsNewData: $e\n$s", // level: LogLevel.Info); // rethrow; // } // } // // Future getAllTxsToWatch() async { // if (_hasCalledExit) return; // List unconfirmedTxnsToNotifyPending = []; // List unconfirmedTxnsToNotifyConfirmed = []; // // final currentChainHeight = await chainHeight; // // final txCount = // await db.isar.transactionV2s.where().walletIdEqualTo(walletId).count(); // // const paginateLimit = 50; // // for (int i = 0; i < txCount; i += paginateLimit) { // final transactions = await db.isar.transactionV2s // .where() // .walletIdEqualTo(walletId) // .offset(i) // .limit(paginateLimit) // .findAll(); // for (final tx in transactions) { // if (tx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) { // if (txTracker.wasNotifiedPending(tx.txid) && // !txTracker.wasNotifiedConfirmed(tx.txid)) { // unconfirmedTxnsToNotifyConfirmed.add(tx); // } // } else { // if (!txTracker.wasNotifiedPending(tx.txid)) { // unconfirmedTxnsToNotifyPending.add(tx); // } // } // } // } // // // notify on new incoming transaction // for (final tx in unconfirmedTxnsToNotifyPending) { // final confirmations = tx.getConfirmations(currentChainHeight); // // if (tx.type == isar_models.TransactionType.incoming) { // CryptoNotificationsEventBus.instance.fire( // CryptoNotificationEvent( // title: "Incoming transaction", // walletId: walletId, // date: DateTime.now(), // shouldWatchForUpdates: confirmations < MINIMUM_CONFIRMATIONS, // txid: tx.txid, // confirmations: confirmations, // requiredConfirmations: MINIMUM_CONFIRMATIONS, // walletName: walletName, // coin: coin, // ), // ); // // await txTracker.addNotifiedPending(tx.txid); // } else if (tx.type == isar_models.TransactionType.outgoing) { // CryptoNotificationsEventBus.instance.fire( // CryptoNotificationEvent( // title: "Sending transaction", // walletId: walletId, // date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000), // shouldWatchForUpdates: confirmations < MINIMUM_CONFIRMATIONS, // txid: tx.txid, // confirmations: confirmations, // requiredConfirmations: MINIMUM_CONFIRMATIONS, // walletName: walletName, // coin: coin, // ), // ); // // await txTracker.addNotifiedPending(tx.txid); // } // } // // // notify on confirmed // for (final tx in unconfirmedTxnsToNotifyConfirmed) { // if (tx.type == isar_models.TransactionType.incoming) { // CryptoNotificationsEventBus.instance.fire( // CryptoNotificationEvent( // title: "Incoming transaction confirmed", // walletId: walletId, // date: DateTime.now(), // shouldWatchForUpdates: false, // txid: tx.txid, // requiredConfirmations: MINIMUM_CONFIRMATIONS, // walletName: walletName, // coin: coin, // ), // ); // // await txTracker.addNotifiedConfirmed(tx.txid); // } else if (tx.type == isar_models.TransactionType.outgoing) { // CryptoNotificationsEventBus.instance.fire( // CryptoNotificationEvent( // title: "Outgoing transaction confirmed", // walletId: walletId, // date: DateTime.now(), // shouldWatchForUpdates: false, // txid: tx.txid, // requiredConfirmations: MINIMUM_CONFIRMATIONS, // walletName: walletName, // coin: coin, // ), // ); // // await txTracker.addNotifiedConfirmed(tx.txid); // } // } // } // // bool refreshMutex = false; // // bool _shouldAutoSync = false; // // @override // bool get shouldAutoSync => _shouldAutoSync; // // @override // set shouldAutoSync(bool shouldAutoSync) { // if (_shouldAutoSync != shouldAutoSync) { // _shouldAutoSync = shouldAutoSync; // if (!shouldAutoSync) { // timer?.cancel(); // timer = null; // stopNetworkAlivePinging(); // } else { // startNetworkAlivePinging(); // refresh(); // } // } // } // // //TODO Show percentages properly/more consistently // /// Refreshes display data for the wallet // @override // Future refresh() async { // if (refreshMutex) { // Logging.instance.log("$walletId $walletName refreshMutex denied", // level: LogLevel.Info); // return; // } else { // refreshMutex = true; // } // // try { // GlobalEventBus.instance.fire( // WalletSyncStatusChangedEvent( // WalletSyncStatus.syncing, // walletId, // coin, // ), // ); // // GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.0, walletId)); // // GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.1, walletId)); // // final currentHeight = await chainHeight; // const storedHeight = 1; //await storedChainHeight; // // Logging.instance // .log("chain height: $currentHeight", level: LogLevel.Info); // Logging.instance // .log("cached height: $storedHeight", level: LogLevel.Info); // // if (currentHeight != storedHeight) { // GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.2, walletId)); // // GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.3, walletId)); // await _checkCurrentReceivingAddressesForTransactions(); // // final fetchFuture = _refreshTransactions(); // final utxosRefreshFuture = _updateUTXOs(); // GlobalEventBus.instance // .fire(RefreshPercentChangedEvent(0.50, walletId)); // // final feeObj = _getFees(); // GlobalEventBus.instance // .fire(RefreshPercentChangedEvent(0.60, walletId)); // // GlobalEventBus.instance // .fire(RefreshPercentChangedEvent(0.70, walletId)); // _feeObject = Future(() => feeObj); // // await utxosRefreshFuture; // GlobalEventBus.instance // .fire(RefreshPercentChangedEvent(0.80, walletId)); // // await fetchFuture; // await getAllTxsToWatch(); // GlobalEventBus.instance // .fire(RefreshPercentChangedEvent(0.90, walletId)); // } // // GlobalEventBus.instance.fire(RefreshPercentChangedEvent(1.0, walletId)); // GlobalEventBus.instance.fire( // WalletSyncStatusChangedEvent( // WalletSyncStatus.synced, // walletId, // coin, // ), // ); // refreshMutex = false; // // if (shouldAutoSync) { // timer ??= Timer.periodic(const Duration(seconds: 150), (timer) async { // // chain height check currently broken // // if ((await chainHeight) != (await storedChainHeight)) { // if (await refreshIfThereIsNewData()) { // await refresh(); // GlobalEventBus.instance.fire(UpdatedInBackgroundEvent( // "New data found in $walletId $walletName in background!", // walletId)); // } // // } // }); // } // } catch (error, strace) { // refreshMutex = false; // GlobalEventBus.instance.fire( // NodeConnectionStatusChangedEvent( // NodeConnectionStatus.disconnected, // walletId, // coin, // ), // ); // GlobalEventBus.instance.fire( // WalletSyncStatusChangedEvent( // WalletSyncStatus.unableToSync, // walletId, // coin, // ), // ); // Logging.instance.log( // "Caught exception in refreshWalletData(): $error\n$strace", // level: LogLevel.Error); // } // } // // @override // Future> prepareSend({ // required String address, // required Amount amount, // Map? args, // }) async { // try { // final feeRateType = args?["feeRate"]; // final customSatsPerVByte = args?["satsPerVByte"] as int?; // final feeRateAmount = args?["feeRateAmount"]; // final utxos = args?["UTXOs"] as Set?; // // if (customSatsPerVByte != null) { // // check for send all // bool isSendAll = false; // if (amount == balance.spendable) { // isSendAll = true; // } // // final bool coinControl = utxos != null; // // final result = await coinSelection( // satoshiAmountToSend: amount.raw.toInt(), // selectedTxFeeRate: -1, // satsPerVByte: customSatsPerVByte, // recipientAddress: address, // isSendAll: isSendAll, // utxos: utxos?.toList(), // coinControl: coinControl, // ); // // Logging.instance // .log("PREPARE SEND RESULT: $result", level: LogLevel.Info); // if (result is int) { // switch (result) { // case 1: // throw Exception("Insufficient balance!"); // case 2: // throw Exception("Insufficient funds to pay for transaction fee!"); // default: // throw Exception("Transaction failed with error code $result"); // } // } else { // final hex = result["hex"]; // if (hex is String) { // final fee = result["fee"] as int; // final vSize = result["vSize"] as int; // // Logging.instance.log("txHex: $hex", level: LogLevel.Info); // Logging.instance.log("fee: $fee", level: LogLevel.Info); // Logging.instance.log("vsize: $vSize", level: LogLevel.Info); // // fee should never be less than vSize sanity check // if (fee < vSize) { // throw Exception( // "Error in fee calculation: Transaction fee cannot be less than vSize"); // } // return result as Map; // } else { // throw Exception("sent hex is not a String!!!"); // } // } // } else if (feeRateType is FeeRateType || feeRateAmount is int) { // late final int rate; // if (feeRateType is FeeRateType) { // int fee = 0; // final feeObject = await fees; // switch (feeRateType) { // case FeeRateType.fast: // fee = feeObject.fast; // break; // case FeeRateType.average: // fee = feeObject.medium; // break; // case FeeRateType.slow: // fee = feeObject.slow; // break; // default: // throw ArgumentError("Invalid use of custom fee"); // } // rate = fee; // } else { // rate = feeRateAmount as int; // } // // check for send all // bool isSendAll = false; // if (amount == balance.spendable) { // isSendAll = true; // } // // final bool coinControl = utxos != null; // // final result = await coinSelection( // satoshiAmountToSend: amount.raw.toInt(), // selectedTxFeeRate: rate, // recipientAddress: address, // isSendAll: isSendAll, // utxos: utxos?.toList(), // coinControl: coinControl, // ); // // Logging.instance // .log("PREPARE SEND RESULT: $result", level: LogLevel.Info); // if (result is int) { // switch (result) { // case 1: // throw Exception("Insufficient balance!"); // case 2: // throw Exception("Insufficient funds to pay for transaction fee!"); // default: // throw Exception("Transaction failed with error code $result"); // } // } else { // final hex = result["hex"]; // if (hex is String) { // final fee = result["fee"] as int; // final vSize = result["vSize"] as int; // // Logging.instance.log("txHex: $hex", level: LogLevel.Info); // Logging.instance.log("fee: $fee", level: LogLevel.Info); // Logging.instance.log("vsize: $vSize", level: LogLevel.Info); // // fee should never be less than vSize sanity check // if (fee < vSize) { // throw Exception( // "Error in fee calculation: Transaction fee cannot be less than vSize"); // } // return result as Map; // } else { // throw Exception("sent hex is not a String!!!"); // } // } // } else { // throw ArgumentError("Invalid fee rate argument provided!"); // } // } catch (e, s) { // Logging.instance.log("Exception rethrown from prepareSend(): $e\n$s", // level: LogLevel.Error); // rethrow; // } // } // // @override // Future confirmSend({dynamic txData}) async { // try { // Logging.instance.log("confirmSend txData: $txData", level: LogLevel.Info); // final txHash = await _electrumXClient.broadcastTransaction( // rawTx: txData["hex"] as String); // Logging.instance.log("Sent txHash: $txHash", level: LogLevel.Info); // // final utxos = txData["usedUTXOs"] as List; // // // mark utxos as used // await db.putUTXOs(utxos.map((e) => e.copyWith(used: true)).toList()); // // return txHash; // } catch (e, s) { // Logging.instance.log("Exception rethrown from confirmSend(): $e\n$s", // level: LogLevel.Error); // rethrow; // } // } // // @override // Future testNetworkConnection() async { // try { // final result = await _electrumXClient.ping(); // return result; // } catch (_) { // return false; // } // } // // Timer? _networkAliveTimer; // // void startNetworkAlivePinging() { // // call once on start right away // _periodicPingCheck(); // // // then periodically check // _networkAliveTimer = Timer.periodic( // Constants.networkAliveTimerDuration, // (_) async { // _periodicPingCheck(); // }, // ); // } // // void _periodicPingCheck() async { // bool hasNetwork = await testNetworkConnection(); // // if (_isConnected != hasNetwork) { // NodeConnectionStatus status = hasNetwork // ? NodeConnectionStatus.connected // : NodeConnectionStatus.disconnected; // GlobalEventBus.instance // .fire(NodeConnectionStatusChangedEvent(status, walletId, coin)); // // _isConnected = hasNetwork; // if (hasNetwork) { // unawaited(refresh()); // } // } // } // // void stopNetworkAlivePinging() { // _networkAliveTimer?.cancel(); // _networkAliveTimer = null; // } // // bool _isConnected = false; // // @override // bool get isConnected => _isConnected; // // @override // Future initializeNew( // ({String mnemonicPassphrase, int wordCount})? data, // ) async { // Logging.instance // .log("Generating new ${coin.prettyName} wallet.", level: LogLevel.Info); // // if (getCachedId() != null) { // throw Exception( // "Attempted to initialize a new wallet using an existing wallet ID!"); // } // await _prefs.init(); // try { // await _generateNewWallet(data); // } catch (e, s) { // Logging.instance.log("Exception rethrown from initializeNew(): $e\n$s", // level: LogLevel.Fatal); // rethrow; // } // await Future.wait([ // updateCachedId(walletId), // updateCachedIsFavorite(false), // ]); // } // // @override // Future initializeExisting() async { // Logging.instance.log("initializeExisting() ${coin.prettyName} wallet.", // level: LogLevel.Info); // // if (getCachedId() == null) { // throw Exception( // "Attempted to initialize an existing wallet using an unknown wallet ID!"); // } // // await _prefs.init(); // } // // // hack to add tx to txData before refresh completes // // required based on current app architecture where we don't properly store // // transactions locally in a good way // @override // Future updateSentCachedTxData(Map txData) async { // //. TODO update this to V2 properly // // final transaction = TransactionV2( // // walletId: walletId, // // txid: txData["txid"] as String, // // timestamp: DateTime.now().millisecondsSinceEpoch ~/ 1000, // // type: isar_models.TransactionType.outgoing, // // subType: isar_models.TransactionSubType.none, // // // precision may be lost here hence the following amountString // // amount: (txData["recipientAmt"] as Amount).raw.toInt(), // // amountString: (txData["recipientAmt"] as Amount).toJsonString(), // // fee: txData["fee"] as int, // // height: null, // // isCancelled: false, // // isLelantus: false, // // otherData: null, // // slateId: null, // // nonce: null, // // inputs: [], // // outputs: [], // // numberOfMessages: null, // // ); // // // // final address = txData["address"] is String // // ? await db.getAddress(walletId, txData["address"] as String) // // : null; // // // // await db.addNewTransactionData( // // [ // // Tuple2(transaction, address), // // ], // // walletId, // // ); // } // // bool validateCashAddr(String cashAddr) { // String addr = cashAddr; // if (cashAddr.contains(":")) { // addr = cashAddr.split(":").last; // } // // return addr.startsWith("q"); // } // // @override // bool validateAddress(String address) { // try { // // 0 for bitcoincash: address scheme, 1 for legacy address // final format = bitbox.Address.detectFormat(address); // if (kDebugMode) { // print("format $format"); // } // // if (_coin == Coin.bitcoincashTestnet) { // return true; // } // // if (format == bitbox.Address.formatCashAddr) { // return validateCashAddr(address); // } else { // return address.startsWith("1"); // } // } catch (e) { // return false; // } // } // // @override // String get walletId => _walletId; // late final String _walletId; // // @override // String get walletName => _walletName; // late String _walletName; // // // setter for updating on rename // @override // set walletName(String newName) => _walletName = newName; // // late ElectrumXClient _electrumXClient; // // ElectrumXClient get electrumXClient => _electrumXClient; // // late CachedElectrumXClient _cachedElectrumXClient; // // CachedElectrumXClient get cachedElectrumXClient => _cachedElectrumXClient; // // late SecureStorageInterface _secureStore; // // @override // Future updateNode(bool shouldRefresh) async { // final failovers = NodeService(secureStorageInterface: _secureStore) // .failoverNodesFor(coin: coin) // .map((e) => ElectrumXNode( // address: e.host, // port: e.port, // name: e.name, // id: e.id, // useSSL: e.useSSL, // )) // .toList(); // final newNode = await getCurrentNode(); // _electrumXClient = ElectrumXClient.from( // node: newNode, // prefs: _prefs, // failovers: failovers, // ); // _cachedElectrumXClient = CachedElectrumXClient.from( // electrumXClient: _electrumXClient, // ); // // if (shouldRefresh) { // unawaited(refresh()); // } // } // // Future> _getMnemonicList() async { // final _mnemonicString = await mnemonicString; // if (_mnemonicString == null) { // return []; // } // final List data = _mnemonicString.split(' '); // return data; // } // // Future getCurrentNode() async { // final node = NodeService(secureStorageInterface: _secureStore) // .getPrimaryNodeFor(coin: coin) ?? // DefaultNodes.getNodeFor(coin); // // return ElectrumXNode( // address: node.host, // port: node.port, // name: node.name, // useSSL: node.useSSL, // id: node.id, // ); // } // // Future> _fetchAllOwnAddresses() async { // final allAddresses = await db // .getAddresses(walletId) // .filter() // .not() // .typeEqualTo(isar_models.AddressType.nonWallet) // .and() // .group((q) => q // .subTypeEqualTo(isar_models.AddressSubType.receiving) // .or() // .subTypeEqualTo(isar_models.AddressSubType.change)) // .findAll(); // // // for (var i = 0; i < receivingAddressesP2PKH.length; i++) { // // if (!allAddresses.contains(receivingAddressesP2PKH[i])) { // // allAddresses.add(receivingAddressesP2PKH[i] as String); // // } // // } // // for (var i = 0; i < changeAddressesP2PKH.length; i++) { // // if (!allAddresses.contains(changeAddressesP2PKH[i])) { // // allAddresses.add(changeAddressesP2PKH[i] as String); // // } // // } // return allAddresses; // } // // Future _getFees() async { // try { // //TODO adjust numbers for different speeds? // const int f = 1, m = 5, s = 20; // // final fast = await electrumXClient.estimateFee(blocks: f); // final medium = await electrumXClient.estimateFee(blocks: m); // final slow = await electrumXClient.estimateFee(blocks: s); // // final feeObject = FeeObject( // numberOfBlocksFast: f, // numberOfBlocksAverage: m, // numberOfBlocksSlow: s, // fast: Amount.fromDecimal( // fast, // fractionDigits: coin.decimals, // ).raw.toInt(), // medium: Amount.fromDecimal( // medium, // fractionDigits: coin.decimals, // ).raw.toInt(), // slow: Amount.fromDecimal( // slow, // fractionDigits: coin.decimals, // ).raw.toInt(), // ); // // Logging.instance.log("fetched fees: $feeObject", level: LogLevel.Info); // return feeObject; // } catch (e) { // Logging.instance // .log("Exception rethrown from _getFees(): $e", level: LogLevel.Error); // rethrow; // } // } // // Future _generateNewWallet( // ({String mnemonicPassphrase, int wordCount})? data, // ) async { // Logging.instance // .log("IS_INTEGRATION_TEST: $integrationTestFlag", level: LogLevel.Info); // if (!integrationTestFlag) { // try { // final features = await electrumXClient // .getServerFeatures() // .timeout(const Duration(seconds: 3)); // Logging.instance.log("features: $features", level: LogLevel.Info); // switch (coin) { // case Coin.bitcoincash: // if (features['genesis_hash'] != GENESIS_HASH_MAINNET) { // throw Exception("genesis hash does not match main net!"); // } // break; // case Coin.bitcoincashTestnet: // if (features['genesis_hash'] != GENESIS_HASH_TESTNET) { // throw Exception("genesis hash does not match test net!"); // } // break; // default: // throw Exception( // "Attempted to generate a BitcoinWallet using a non bitcoin coin type: ${coin.name}"); // } // } catch (e, s) { // Logging.instance.log("$e/n$s", level: LogLevel.Info); // } // } // // // this should never fail // if ((await mnemonicString) != null || (await mnemonicPassphrase) != null) { // throw Exception( // "Attempted to overwrite mnemonic on generate new wallet!"); // } // final int strength; // if (data == null || data.wordCount == 12) { // strength = 128; // } else if (data.wordCount == 24) { // strength = 256; // } else { // throw Exception("Invalid word count"); // } // await _secureStore.write( // key: '${_walletId}_mnemonic', // value: bip39.generateMnemonic(strength: strength)); // await _secureStore.write( // key: '${_walletId}_mnemonicPassphrase', // value: data?.mnemonicPassphrase ?? "", // ); // // // Generate and add addresses to relevant arrays // final initialAddresses = await Future.wait([ // // P2PKH // _generateAddressForChain(0, 0, DerivePathType.bip44), // _generateAddressForChain(1, 0, DerivePathType.bip44), // ]); // // await db.putAddresses(initialAddresses); // // Logging.instance.log("_generateNewWalletFinished", level: LogLevel.Info); // } // // /// Generates a new internal or external chain address for the wallet using a BIP44 derivation path. // /// [chain] - Use 0 for receiving (external), 1 for change (internal). Should not be any other value! // /// [index] - This can be any integer >= 0 // Future _generateAddressForChain( // int chain, // int index, // DerivePathType derivePathType, // ) async { // final _mnemonic = await mnemonicString; // final _mnemonicPassphrase = await mnemonicPassphrase; // if (_mnemonicPassphrase == null) { // Logging.instance.log( // "Exception in _generateAddressForChain: mnemonic passphrase null, possible migration issue; if using internal builds, delete wallet and restore from seed, if using a release build, please file bug report", // level: LogLevel.Error); // } // // final derivePath = constructDerivePath( // derivePathType: derivePathType, // networkWIF: _network.wif, // chain: chain, // index: index, // ); // final node = await Bip32Utils.getBip32Node( // _mnemonic!, // _mnemonicPassphrase!, // _network, // derivePath, // ); // // final data = PaymentData(pubkey: node.publicKey); // // String address; // isar_models.AddressType addrType; // // switch (derivePathType) { // case DerivePathType.bip44: // case DerivePathType.bch44: // address = P2PKH(data: data, network: _network).data.address!; // addrType = isar_models.AddressType.p2pkh; // address = bitbox.Address.toCashAddress(address); // break; // default: // throw Exception("DerivePathType $derivePathType not supported"); // } // // return isar_models.Address( // walletId: walletId, // value: address, // publicKey: node.publicKey, // type: addrType, // derivationIndex: index, // derivationPath: isar_models.DerivationPath()..value = derivePath, // subType: chain == 0 // ? isar_models.AddressSubType.receiving // : isar_models.AddressSubType.change, // ); // } // // /// Returns the latest receiving/change (external/internal) address for the wallet depending on [chain] // /// and // /// [chain] - Use 0 for receiving (external), 1 for change (internal). Should not be any other value! // Future _getCurrentAddressForChain( // int chain, // DerivePathType derivePathType, // ) async { // final subType = chain == 0 // Here, we assume that chain == 1 if it isn't 0 // ? isar_models.AddressSubType.receiving // : isar_models.AddressSubType.change; // // isar_models.AddressType type; // String coinType; // String purpose; // switch (derivePathType) { // case DerivePathType.bip44: // type = isar_models.AddressType.p2pkh; // coinType = coin == Coin.bitcoincash ? "145" : "1"; // purpose = "44"; // break; // case DerivePathType.bch44: // type = isar_models.AddressType.p2pkh; // coinType = coin == Coin.bitcoincash ? "0" : "1"; // purpose = "44"; // break; // default: // throw Exception("DerivePathType $derivePathType not supported"); // } // // final address = await db // .getAddresses(walletId) // .filter() // .typeEqualTo(type) // .subTypeEqualTo(subType) // .derivationPath((q) => q.valueStartsWith("m/$purpose'/$coinType")) // .not() // .otherDataEqualTo(kReservedFusionAddress) // .sortByDerivationIndexDesc() // .findFirst(); // return address!.value; // } // // String _buildDerivationStorageKey({ // required int chain, // required DerivePathType derivePathType, // }) { // String key; // String chainId = chain == 0 ? "receive" : "change"; // switch (derivePathType) { // case DerivePathType.bip44: // key = "${walletId}_${chainId}DerivationsP2PKH"; // break; // case DerivePathType.bch44: // key = "${walletId}_${chainId}DerivationsBch44P2PKH"; // break; // default: // throw UnsupportedError( // "${derivePathType.name} not supported by ${coin.prettyName}"); // } // return key; // } // // Future> _fetchDerivations( // {required int chain, required DerivePathType derivePathType}) async { // // build lookup key // final key = _buildDerivationStorageKey( // chain: chain, derivePathType: derivePathType); // // // fetch current derivations // final derivationsString = await _secureStore.read(key: key); // return Map.from( // jsonDecode(derivationsString ?? "{}") as Map); // } // // Future _updateUTXOs() async { // final allAddresses = await _fetchAllOwnAddresses(); // // try { // final fetchedUtxoList = >>[]; // // final Map>> batches = {}; // const batchSizeMax = 10; // int batchNumber = 0; // for (int i = 0; i < allAddresses.length; i++) { // if (batches[batchNumber] == null) { // batches[batchNumber] = {}; // } // final scripthash = // _convertToScriptHash(allAddresses[i].value, _network); // // batches[batchNumber]!.addAll({ // scripthash: [scripthash] // }); // if (i % batchSizeMax == batchSizeMax - 1) { // batchNumber++; // } // } // // for (int i = 0; i < batches.length; i++) { // final response = // await _electrumXClient.getBatchUTXOs(args: batches[i]!); // for (final entry in response.entries) { // if (entry.value.isNotEmpty) { // fetchedUtxoList.add(entry.value); // } // } // } // // final List outputArray = []; // // for (int i = 0; i < fetchedUtxoList.length; i++) { // for (int j = 0; j < fetchedUtxoList[i].length; j++) { // final jsonUTXO = fetchedUtxoList[i][j]; // // final txn = await cachedElectrumXClient.getTransaction( // txHash: jsonUTXO["tx_hash"] as String, // verbose: true, // coin: coin, // ); // // final vout = jsonUTXO["tx_pos"] as int; // // final outputs = txn["vout"] as List; // // String? scriptPubKey; // String? utxoOwnerAddress; // // get UTXO owner address // for (final output in outputs) { // if (output["n"] == vout) { // scriptPubKey = output["scriptPubKey"]?["hex"] as String?; // utxoOwnerAddress = // output["scriptPubKey"]?["addresses"]?[0] as String? ?? // output["scriptPubKey"]?["address"] as String?; // } // } // // bool blocked = false; // String? blockedReason; // // if (scriptPubKey != null) { // // check for cash tokens // try { // final ctOutput = ct.unwrap_spk(scriptPubKey.toUint8ListFromHex); // if (ctOutput.token_data != null) { // // found a token! // blocked = true; // blockedReason = "Cash token output detected"; // } // } catch (e, s) { // // Probably doesn't contain a cash token so just log failure // Logging.instance.log( // "Script pub key \"$scriptPubKey\" cash token" // " parsing check failed: $e\n$s", // level: LogLevel.Warning, // ); // } // // // check for SLP tokens if not already blocked // if (!blocked && BchUtils.isSLP(scriptPubKey.toUint8ListFromHex)) { // blocked = true; // blockedReason = "SLP token output detected"; // } // } // // final utxo = isar_models.UTXO( // walletId: walletId, // txid: txn["txid"] as String, // vout: vout, // value: jsonUTXO["value"] as int, // name: "", // isBlocked: blocked, // blockedReason: blockedReason, // isCoinbase: txn["is_coinbase"] as bool? ?? false, // blockHash: txn["blockhash"] as String?, // blockHeight: jsonUTXO["height"] as int?, // blockTime: txn["blocktime"] as int?, // address: utxoOwnerAddress, // ); // // outputArray.add(utxo); // } // } // // Logging.instance // .log('Outputs fetched: $outputArray', level: LogLevel.Info); // // await db.updateUTXOs(walletId, outputArray); // // // finally update balance // await _updateBalance(); // } catch (e, s) { // Logging.instance // .log("Output fetch unsuccessful: $e\n$s", level: LogLevel.Error); // } // } // // Future _updateBalance() async { // await refreshBalance(); // } // // @override // Balance get balance => _balance ??= getCachedBalance(); // Balance? _balance; // // Future getTxCount({required String address}) async { // String? scripthash; // try { // scripthash = _convertToScriptHash(address, _network); // final transactions = // await electrumXClient.getHistory(scripthash: scripthash); // return transactions.length; // } catch (e) { // Logging.instance.log( // "Exception rethrown in _getTxCount(address: $address, scripthash: $scripthash): $e", // level: LogLevel.Error); // rethrow; // } // } // // Future> _getBatchTxCount({ // required Map addresses, // }) async { // try { // final Map> args = {}; // if (kDebugMode) { // print("Address $addresses"); // } // for (final entry in addresses.entries) { // args[entry.key] = [_convertToScriptHash(entry.value, _network)]; // } // // if (kDebugMode) { // print("Args ${jsonEncode(args)}"); // } // // final response = await electrumXClient.getBatchHistory(args: args); // if (kDebugMode) { // print("Response ${jsonEncode(response)}"); // } // final Map result = {}; // for (final entry in response.entries) { // result[entry.key] = entry.value.length; // } // if (kDebugMode) { // print("result ${jsonEncode(result)}"); // } // return result; // } catch (e, s) { // Logging.instance.log( // "Exception rethrown in _getBatchTxCount(address: $addresses: $e\n$s", // level: LogLevel.Error); // rethrow; // } // } // // Future _checkReceivingAddressForTransactions() async { // try { // final currentReceiving = await _currentReceivingAddress; // // final int txCount = await getTxCount(address: currentReceiving.value); // Logging.instance.log( // 'Number of txs for current receiving address $currentReceiving: $txCount', // level: LogLevel.Info); // // if (txCount >= 1 || currentReceiving.derivationIndex < 0) { // // First increment the receiving index // final newReceivingIndex = currentReceiving.derivationIndex + 1; // // // Use new index to derive a new receiving address // final newReceivingAddress = await _generateAddressForChain( // 0, newReceivingIndex, DerivePathTypeExt.primaryFor(coin)); // // final existing = await db // .getAddresses(walletId) // .filter() // .valueEqualTo(newReceivingAddress.value) // .findFirst(); // if (existing == null) { // // Add that new change address // await db.putAddress(newReceivingAddress); // } else { // // we need to update the address // await db.updateAddress(existing, newReceivingAddress); // } // // keep checking until address with no tx history is set as current // await _checkReceivingAddressForTransactions(); // } // } on SocketException catch (se, s) { // Logging.instance.log( // "SocketException caught in _checkReceivingAddressForTransactions(${DerivePathTypeExt.primaryFor(coin)}): $se\n$s", // level: LogLevel.Error); // return; // } catch (e, s) { // Logging.instance.log( // "Exception rethrown from _checkReceivingAddressForTransactions(${DerivePathTypeExt.primaryFor(coin)}): $e\n$s", // level: LogLevel.Error); // rethrow; // } // } // // Future _checkCurrentReceivingAddressesForTransactions() async { // try { // // for (final type in DerivePathType.values) { // await _checkReceivingAddressForTransactions(); // // } // } catch (e, s) { // Logging.instance.log( // "Exception rethrown from _checkCurrentReceivingAddressesForTransactions(): $e\n$s", // level: LogLevel.Info); // rethrow; // } // } // // /// public wrapper because dart can't test private... // Future checkCurrentReceivingAddressesForTransactions() async { // if (Platform.environment["FLUTTER_TEST"] == "true") { // try { // return _checkCurrentReceivingAddressesForTransactions(); // } catch (_) { // rethrow; // } // } // } // // /// attempts to convert a string to a valid scripthash // /// // /// Returns the scripthash or throws an exception on invalid bch address // String _convertToScriptHash(String bchAddress, NetworkType network) { // try { // if (bitbox.Address.detectFormat(bchAddress) == // bitbox.Address.formatCashAddr && // validateCashAddr(bchAddress)) { // bchAddress = bitbox.Address.toLegacyAddress(bchAddress); // } // return AddressUtils.convertToScriptHash(bchAddress, network); // } catch (e) { // rethrow; // } // } // // Future>> _fetchHistory( // Iterable allAddresses) async { // try { // List> allTxHashes = []; // // final Map>> batches = {}; // final Map requestIdToAddressMap = {}; // const batchSizeMax = 10; // int batchNumber = 0; // for (int i = 0; i < allAddresses.length; i++) { // if (batches[batchNumber] == null) { // batches[batchNumber] = {}; // } // final scripthash = // _convertToScriptHash(allAddresses.elementAt(i), _network); // final id = Logger.isTestEnv ? "$i" : const Uuid().v1(); // requestIdToAddressMap[id] = allAddresses.elementAt(i); // batches[batchNumber]!.addAll({ // id: [scripthash] // }); // if (i % batchSizeMax == batchSizeMax - 1) { // batchNumber++; // } // } // // for (int i = 0; i < batches.length; i++) { // final response = // await _electrumXClient.getBatchHistory(args: batches[i]!); // for (final entry in response.entries) { // for (int j = 0; j < entry.value.length; j++) { // entry.value[j]["address"] = requestIdToAddressMap[entry.key]; // if (!allTxHashes.contains(entry.value[j])) { // allTxHashes.add(entry.value[j]); // } // } // } // } // // return allTxHashes; // } catch (e, s) { // Logging.instance.log("_fetchHistory: $e\n$s", level: LogLevel.Error); // rethrow; // } // } // // bool _duplicateTxCheck( // List> allTransactions, String txid) { // for (int i = 0; i < allTransactions.length; i++) { // if (allTransactions[i]["txid"] == txid) { // return true; // } // } // return false; // } // // Future _refreshTransactions() async { // List allAddressesOld = await _fetchAllOwnAddresses(); // // Set receivingAddresses = allAddressesOld // .where((e) => e.subType == isar_models.AddressSubType.receiving) // .map((e) { // if (bitbox.Address.detectFormat(e.value) == bitbox.Address.formatLegacy && // (addressType(address: e.value) == DerivePathType.bip44 || // addressType(address: e.value) == DerivePathType.bch44)) { // return bitbox.Address.toCashAddress(e.value); // } else { // return e.value; // } // }).toSet(); // // Set changeAddresses = allAddressesOld // .where((e) => e.subType == isar_models.AddressSubType.change) // .map((e) { // if (bitbox.Address.detectFormat(e.value) == bitbox.Address.formatLegacy && // (addressType(address: e.value) == DerivePathType.bip44 || // addressType(address: e.value) == DerivePathType.bch44)) { // return bitbox.Address.toCashAddress(e.value); // } else { // return e.value; // } // }).toSet(); // // final allAddressesSet = {...receivingAddresses, ...changeAddresses}; // // final List> allTxHashes = // await _fetchHistory(allAddressesSet); // // List> allTransactions = []; // // for (final txHash in allTxHashes) { // final storedTx = await db.isar.transactionV2s // .where() // .txidWalletIdEqualTo(txHash["tx_hash"] as String, walletId) // .findFirst(); // // if (storedTx == null || // storedTx.height == null || // (storedTx.height != null && storedTx.height! <= 0)) { // final tx = await cachedElectrumXClient.getTransaction( // txHash: txHash["tx_hash"] as String, // verbose: true, // coin: coin, // ); // // // Logging.instance.log("TRANSACTION: ${jsonEncode(tx)}"); // if (!_duplicateTxCheck(allTransactions, tx["txid"] as String)) { // tx["height"] = txHash["height"]; // allTransactions.add(tx); // } // } // } // // final List txns = []; // // for (final txData in allTransactions) { // // set to true if any inputs were detected as owned by this wallet // bool wasSentFromThisWallet = false; // // // set to true if any outputs were detected as owned by this wallet // bool wasReceivedInThisWallet = false; // BigInt amountReceivedInThisWallet = BigInt.zero; // BigInt changeAmountReceivedInThisWallet = BigInt.zero; // // // parse inputs // final List inputs = []; // for (final jsonInput in txData["vin"] as List) { // final map = Map.from(jsonInput as Map); // // final List addresses = []; // String valueStringSats = "0"; // OutpointV2? outpoint; // // final coinbase = map["coinbase"] as String?; // // if (coinbase == null) { // final txid = map["txid"] as String; // final vout = map["vout"] as int; // // final inputTx = await cachedElectrumXClient.getTransaction( // txHash: txid, coin: coin); // // final prevOutJson = Map.from( // (inputTx["vout"] as List).firstWhere((e) => e["n"] == vout) // as Map); // // final prevOut = OutputV2.fromElectrumXJson( // prevOutJson, // decimalPlaces: coin.decimals, // walletOwns: false, // doesn't matter here as this is not saved // ); // // outpoint = OutpointV2.isarCantDoRequiredInDefaultConstructor( // txid: txid, // vout: vout, // ); // valueStringSats = prevOut.valueStringSats; // addresses.addAll(prevOut.addresses); // } // // InputV2 input = InputV2.isarCantDoRequiredInDefaultConstructor( // scriptSigHex: map["scriptSig"]?["hex"] as String?, // sequence: map["sequence"] as int?, // outpoint: outpoint, // valueStringSats: valueStringSats, // addresses: addresses, // witness: map["witness"] as String?, // coinbase: coinbase, // innerRedeemScriptAsm: map["innerRedeemscriptAsm"] as String?, // // don't know yet if wallet owns. Need addresses first // walletOwns: false, // ); // // if (allAddressesSet.intersection(input.addresses.toSet()).isNotEmpty) { // wasSentFromThisWallet = true; // input = input.copyWith(walletOwns: true); // } // // inputs.add(input); // } // // // parse outputs // final List outputs = []; // for (final outputJson in txData["vout"] as List) { // OutputV2 output = OutputV2.fromElectrumXJson( // Map.from(outputJson as Map), // decimalPlaces: coin.decimals, // // don't know yet if wallet owns. Need addresses first // walletOwns: false, // ); // // // if output was to my wallet, add value to amount received // if (receivingAddresses // .intersection(output.addresses.toSet()) // .isNotEmpty) { // wasReceivedInThisWallet = true; // amountReceivedInThisWallet += output.value; // output = output.copyWith(walletOwns: true); // } else if (changeAddresses // .intersection(output.addresses.toSet()) // .isNotEmpty) { // wasReceivedInThisWallet = true; // changeAmountReceivedInThisWallet += output.value; // output = output.copyWith(walletOwns: true); // } // // outputs.add(output); // } // // final totalOut = outputs // .map((e) => e.value) // .fold(BigInt.zero, (value, element) => value + element); // // isar_models.TransactionType type; // isar_models.TransactionSubType subType = // isar_models.TransactionSubType.none; // // // at least one input was owned by this wallet // if (wasSentFromThisWallet) { // type = isar_models.TransactionType.outgoing; // // if (wasReceivedInThisWallet) { // if (changeAmountReceivedInThisWallet + amountReceivedInThisWallet == // totalOut) { // // definitely sent all to self // type = isar_models.TransactionType.sentToSelf; // } else if (amountReceivedInThisWallet == BigInt.zero) { // // most likely just a typical send // // do nothing here yet // } // // // check vout 0 for special scripts // if (outputs.isNotEmpty) { // final output = outputs.first; // // // check for fusion // if (BchUtils.isFUZE(output.scriptPubKeyHex.toUint8ListFromHex)) { // subType = isar_models.TransactionSubType.cashFusion; // } else { // // check other cases here such as SLP or cash tokens etc // } // } // } // } else if (wasReceivedInThisWallet) { // // only found outputs owned by this wallet // type = isar_models.TransactionType.incoming; // } else { // Logging.instance.log( // "Unexpected tx found (ignoring it): $txData", // level: LogLevel.Error, // ); // continue; // } // // final tx = TransactionV2( // walletId: walletId, // blockHash: txData["blockhash"] as String?, // hash: txData["hash"] as String, // txid: txData["txid"] as String, // height: txData["height"] as int?, // version: txData["version"] as int, // timestamp: txData["blocktime"] as int? ?? // DateTime.timestamp().millisecondsSinceEpoch ~/ 1000, // inputs: List.unmodifiable(inputs), // outputs: List.unmodifiable(outputs), // type: type, // subType: subType, // ); // // txns.add(tx); // } // // await db.updateOrPutTransactionV2s(txns); // // // quick hack to notify manager to call notifyListeners if // // transactions changed // if (txns.isNotEmpty) { // GlobalEventBus.instance.fire( // UpdatedInBackgroundEvent( // "Transactions updated/added for: $walletId $walletName ", // walletId, // ), // ); // } // } // // int estimateTxFee({required int vSize, required int feeRatePerKB}) { // return vSize * (feeRatePerKB / 1000).ceil(); // } // // /// The coinselection algorithm decides whether or not the user is eligible to make the transaction // /// with [satoshiAmountToSend] and [selectedTxFeeRate]. If so, it will call buildTrasaction() and return // /// a map containing the tx hex along with other important information. If not, then it will return // /// an integer (1 or 2) // dynamic coinSelection({ // required int satoshiAmountToSend, // required int selectedTxFeeRate, // required String recipientAddress, // required bool coinControl, // required bool isSendAll, // int? satsPerVByte, // int additionalOutputs = 0, // List? utxos, // }) async { // Logging.instance // .log("Starting coinSelection ----------", level: LogLevel.Info); // final List availableOutputs = utxos ?? await this.utxos; // final currentChainHeight = await chainHeight; // final List spendableOutputs = []; // int spendableSatoshiValue = 0; // // // Build list of spendable outputs and totaling their satoshi amount // for (final utxo in availableOutputs) { // if (utxo.isBlocked == false && // utxo.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) && // utxo.used != true) { // spendableOutputs.add(utxo); // spendableSatoshiValue += utxo.value; // } // } // // if (coinControl) { // if (spendableOutputs.length < availableOutputs.length) { // throw ArgumentError("Attempted to use an unavailable utxo"); // } // } // // // don't care about sorting if using all utxos // if (!coinControl) { // // sort spendable by age (oldest first) // spendableOutputs.sort((a, b) { // if (a.blockTime != null && b.blockTime != null) { // return b.blockTime!.compareTo(a.blockTime!); // } else if (a.blockTime != null) { // return -1; // } else { // return 1; // } // }); // } // // Logging.instance.log("spendableOutputs.length: ${spendableOutputs.length}", // level: LogLevel.Info); // Logging.instance // .log("spendableOutputs: $spendableOutputs", level: LogLevel.Info); // Logging.instance.log("spendableSatoshiValue: $spendableSatoshiValue", // level: LogLevel.Info); // Logging.instance // .log("satoshiAmountToSend: $satoshiAmountToSend", level: LogLevel.Info); // // If the amount the user is trying to send is smaller than the amount that they have spendable, // // then return 1, which indicates that they have an insufficient balance. // if (spendableSatoshiValue < satoshiAmountToSend) { // return 1; // // If the amount the user wants to send is exactly equal to the amount they can spend, then return // // 2, which indicates that they are not leaving enough over to pay the transaction fee // } else if (spendableSatoshiValue == satoshiAmountToSend && !isSendAll) { // return 2; // } // // If neither of these statements pass, we assume that the user has a spendable balance greater // // than the amount they're attempting to send. Note that this value still does not account for // // the added transaction fee, which may require an extra input and will need to be checked for // // later on. // // // Possible situation right here // int satoshisBeingUsed = 0; // int inputsBeingConsumed = 0; // List utxoObjectsToUse = []; // // if (!coinControl) { // for (var i = 0; // satoshisBeingUsed < satoshiAmountToSend && // i < spendableOutputs.length; // i++) { // utxoObjectsToUse.add(spendableOutputs[i]); // satoshisBeingUsed += spendableOutputs[i].value; // inputsBeingConsumed += 1; // } // for (int i = 0; // i < additionalOutputs && // inputsBeingConsumed < spendableOutputs.length; // i++) { // utxoObjectsToUse.add(spendableOutputs[inputsBeingConsumed]); // satoshisBeingUsed += spendableOutputs[inputsBeingConsumed].value; // inputsBeingConsumed += 1; // } // } else { // satoshisBeingUsed = spendableSatoshiValue; // utxoObjectsToUse = spendableOutputs; // inputsBeingConsumed = spendableOutputs.length; // } // // Logging.instance // .log("satoshisBeingUsed: $satoshisBeingUsed", level: LogLevel.Info); // Logging.instance // .log("inputsBeingConsumed: $inputsBeingConsumed", level: LogLevel.Info); // Logging.instance // .log('utxoObjectsToUse: $utxoObjectsToUse', level: LogLevel.Info); // Logging.instance // .log('satoshiAmountToSend $satoshiAmountToSend', level: LogLevel.Info); // // // numberOfOutputs' length must always be equal to that of recipientsArray and recipientsAmtArray // List recipientsArray = [recipientAddress]; // List recipientsAmtArray = [satoshiAmountToSend]; // // // gather required signing data // final utxoSigningData = await fetchBuildTxData(utxoObjectsToUse); // // if (isSendAll) { // Logging.instance // .log("Attempting to send all $coin", level: LogLevel.Info); // // final int vSizeForOneOutput = (await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: [recipientAddress], // satoshiAmounts: [satoshisBeingUsed - 1], // ))["vSize"] as int; // int feeForOneOutput = satsPerVByte != null // ? (satsPerVByte * vSizeForOneOutput) // : estimateTxFee( // vSize: vSizeForOneOutput, // feeRatePerKB: selectedTxFeeRate, // ); // if (feeForOneOutput < (vSizeForOneOutput + 1)) { // feeForOneOutput = (vSizeForOneOutput + 1); // } // // final int amount = satoshiAmountToSend - feeForOneOutput; // dynamic txn = await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: recipientsArray, // satoshiAmounts: [amount], // ); // Map transactionObject = { // "hex": txn["hex"], // "recipient": recipientsArray[0], // "recipientAmt": Amount( // rawValue: BigInt.from(amount), // fractionDigits: coin.decimals, // ), // "fee": feeForOneOutput, // "vSize": txn["vSize"], // "usedUTXOs": utxoObjectsToUse, // }; // return transactionObject; // } // // final int vSizeForOneOutput = (await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: [recipientAddress], // satoshiAmounts: [satoshisBeingUsed - 1], // ))["vSize"] as int; // final int vSizeForTwoOutPuts = (await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: [ // recipientAddress, // await _getCurrentAddressForChain(1, DerivePathTypeExt.primaryFor(coin)), // ], // satoshiAmounts: [ // satoshiAmountToSend, // satoshisBeingUsed - satoshiAmountToSend - 1, // ], // dust limit is the minimum amount a change output should be // ))["vSize"] as int; // // // Assume 1 output, only for recipient and no change // int feeForOneOutput = satsPerVByte != null // ? (satsPerVByte * vSizeForOneOutput) // : estimateTxFee( // vSize: vSizeForOneOutput, // feeRatePerKB: selectedTxFeeRate, // ); // // Assume 2 outputs, one for recipient and one for change // int feeForTwoOutputs = satsPerVByte != null // ? (satsPerVByte * vSizeForTwoOutPuts) // : estimateTxFee( // vSize: vSizeForTwoOutPuts, // feeRatePerKB: selectedTxFeeRate, // ); // // Logging.instance // .log("feeForTwoOutputs: $feeForTwoOutputs", level: LogLevel.Info); // Logging.instance // .log("feeForOneOutput: $feeForOneOutput", level: LogLevel.Info); // if (feeForOneOutput < (vSizeForOneOutput + 1)) { // feeForOneOutput = (vSizeForOneOutput + 1); // } // if (feeForTwoOutputs < ((vSizeForTwoOutPuts + 1))) { // feeForTwoOutputs = ((vSizeForTwoOutPuts + 1)); // } // // Logging.instance // .log("feeForTwoOutputs: $feeForTwoOutputs", level: LogLevel.Info); // Logging.instance // .log("feeForOneOutput: $feeForOneOutput", level: LogLevel.Info); // // if (satoshisBeingUsed - satoshiAmountToSend > feeForOneOutput) { // if (satoshisBeingUsed - satoshiAmountToSend > // feeForOneOutput + DUST_LIMIT.raw.toInt()) { // // Here, we know that theoretically, we may be able to include another output(change) but we first need to // // factor in the value of this output in satoshis. // int changeOutputSize = // satoshisBeingUsed - satoshiAmountToSend - feeForTwoOutputs; // // We check to see if the user can pay for the new transaction with 2 outputs instead of one. If they can and // // the second output's size > 546 satoshis, we perform the mechanics required to properly generate and use a new // // change address. // if (changeOutputSize > DUST_LIMIT.raw.toInt() && // satoshisBeingUsed - satoshiAmountToSend - changeOutputSize == // feeForTwoOutputs) { // // get the next unused change address // final String newChangeAddress = // (await _getUnusedChangeAddresses(numberOfAddresses: 1)) // .first // .value; // // int feeBeingPaid = // satoshisBeingUsed - satoshiAmountToSend - changeOutputSize; // // recipientsArray.add(newChangeAddress); // recipientsAmtArray.add(changeOutputSize); // // At this point, we have the outputs we're going to use, the amounts to send along with which addresses // // we intend to send these amounts to. We have enough to send instructions to build the transaction. // Logging.instance.log('2 outputs in tx', level: LogLevel.Info); // Logging.instance // .log('Input size: $satoshisBeingUsed', level: LogLevel.Info); // Logging.instance.log('Recipient output size: $satoshiAmountToSend', // level: LogLevel.Info); // Logging.instance.log('Change Output Size: $changeOutputSize', // level: LogLevel.Info); // Logging.instance.log( // 'Difference (fee being paid): $feeBeingPaid sats', // level: LogLevel.Info); // Logging.instance // .log('Estimated fee: $feeForTwoOutputs', level: LogLevel.Info); // dynamic txn = await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: recipientsArray, // satoshiAmounts: recipientsAmtArray, // ); // // // make sure minimum fee is accurate if that is being used // if (txn["vSize"] - feeBeingPaid == 1) { // int changeOutputSize = // satoshisBeingUsed - satoshiAmountToSend - (txn["vSize"] as int); // feeBeingPaid = // satoshisBeingUsed - satoshiAmountToSend - changeOutputSize; // recipientsAmtArray.removeLast(); // recipientsAmtArray.add(changeOutputSize); // Logging.instance.log('Adjusted Input size: $satoshisBeingUsed', // level: LogLevel.Info); // Logging.instance.log( // 'Adjusted Recipient output size: $satoshiAmountToSend', // level: LogLevel.Info); // Logging.instance.log( // 'Adjusted Change Output Size: $changeOutputSize', // level: LogLevel.Info); // Logging.instance.log( // 'Adjusted Difference (fee being paid): $feeBeingPaid sats', // level: LogLevel.Info); // Logging.instance.log('Adjusted Estimated fee: $feeForTwoOutputs', // level: LogLevel.Info); // txn = await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: recipientsArray, // satoshiAmounts: recipientsAmtArray, // ); // } // // Map transactionObject = { // "hex": txn["hex"], // "recipient": recipientsArray[0], // "recipientAmt": Amount( // rawValue: BigInt.from(recipientsAmtArray[0]), // fractionDigits: coin.decimals, // ), // "fee": feeBeingPaid, // "vSize": txn["vSize"], // "usedUTXOs": utxoObjectsToUse, // }; // return transactionObject; // } else { // // Something went wrong here. It either overshot or undershot the estimated fee amount or the changeOutputSize // // is smaller than or equal to [DUST_LIMIT]. Revert to single output transaction. // Logging.instance.log('1 output in tx', level: LogLevel.Info); // Logging.instance // .log('Input size: $satoshisBeingUsed', level: LogLevel.Info); // Logging.instance.log('Recipient output size: $satoshiAmountToSend', // level: LogLevel.Info); // Logging.instance.log( // 'Difference (fee being paid): ${satoshisBeingUsed - satoshiAmountToSend} sats', // level: LogLevel.Info); // Logging.instance // .log('Estimated fee: $feeForOneOutput', level: LogLevel.Info); // dynamic txn = await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: recipientsArray, // satoshiAmounts: recipientsAmtArray, // ); // Map transactionObject = { // "hex": txn["hex"], // "recipient": recipientsArray[0], // "recipientAmt": Amount( // rawValue: BigInt.from(recipientsAmtArray[0]), // fractionDigits: coin.decimals, // ), // "fee": satoshisBeingUsed - satoshiAmountToSend, // "vSize": txn["vSize"], // "usedUTXOs": utxoObjectsToUse, // }; // return transactionObject; // } // } else { // // No additional outputs needed since adding one would mean that it'd be smaller than 546 sats // // which makes it uneconomical to add to the transaction. Here, we pass data directly to instruct // // the wallet to begin crafting the transaction that the user requested. // Logging.instance.log('1 output in tx', level: LogLevel.Info); // Logging.instance // .log('Input size: $satoshisBeingUsed', level: LogLevel.Info); // Logging.instance.log('Recipient output size: $satoshiAmountToSend', // level: LogLevel.Info); // Logging.instance.log( // 'Difference (fee being paid): ${satoshisBeingUsed - satoshiAmountToSend} sats', // level: LogLevel.Info); // Logging.instance // .log('Estimated fee: $feeForOneOutput', level: LogLevel.Info); // dynamic txn = await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: recipientsArray, // satoshiAmounts: recipientsAmtArray, // ); // Map transactionObject = { // "hex": txn["hex"], // "recipient": recipientsArray[0], // "recipientAmt": Amount( // rawValue: BigInt.from(recipientsAmtArray[0]), // fractionDigits: coin.decimals, // ), // "fee": satoshisBeingUsed - satoshiAmountToSend, // "vSize": txn["vSize"], // "usedUTXOs": utxoObjectsToUse, // }; // return transactionObject; // } // } else if (satoshisBeingUsed - satoshiAmountToSend == feeForOneOutput) { // // In this scenario, no additional change output is needed since inputs - outputs equal exactly // // what we need to pay for fees. Here, we pass data directly to instruct the wallet to begin // // crafting the transaction that the user requested. // Logging.instance.log('1 output in tx', level: LogLevel.Info); // Logging.instance // .log('Input size: $satoshisBeingUsed', level: LogLevel.Info); // Logging.instance.log('Recipient output size: $satoshiAmountToSend', // level: LogLevel.Info); // Logging.instance.log( // 'Fee being paid: ${satoshisBeingUsed - satoshiAmountToSend} sats', // level: LogLevel.Info); // Logging.instance // .log('Estimated fee: $feeForOneOutput', level: LogLevel.Info); // dynamic txn = await buildTransaction( // utxosToUse: utxoObjectsToUse, // utxoSigningData: utxoSigningData, // recipients: recipientsArray, // satoshiAmounts: recipientsAmtArray, // ); // Map transactionObject = { // "hex": txn["hex"], // "recipient": recipientsArray[0], // "recipientAmt": Amount( // rawValue: BigInt.from(recipientsAmtArray[0]), // fractionDigits: coin.decimals, // ), // "fee": feeForOneOutput, // "vSize": txn["vSize"], // "usedUTXOs": utxoObjectsToUse, // }; // return transactionObject; // } else { // // Remember that returning 2 indicates that the user does not have a sufficient balance to // // pay for the transaction fee. Ideally, at this stage, we should check if the user has any // // additional outputs they're able to spend and then recalculate fees. // Logging.instance.log( // 'Cannot pay tx fee - checking for more outputs and trying again', // level: LogLevel.Warning); // // try adding more outputs // if (spendableOutputs.length > inputsBeingConsumed) { // return coinSelection( // satoshiAmountToSend: satoshiAmountToSend, // selectedTxFeeRate: selectedTxFeeRate, // satsPerVByte: satsPerVByte, // recipientAddress: recipientAddress, // isSendAll: isSendAll, // additionalOutputs: additionalOutputs + 1, // utxos: utxos, // coinControl: coinControl, // ); // } // return 2; // } // } // // Future> fetchBuildTxData( // List utxosToUse, // ) async { // // return data // List signingData = []; // // try { // // Populating the addresses to check // for (var i = 0; i < utxosToUse.length; i++) { // if (utxosToUse[i].address == null) { // final txid = utxosToUse[i].txid; // final tx = await _cachedElectrumXClient.getTransaction( // txHash: txid, // coin: coin, // ); // // for (final output in tx["vout"] as List) { // final n = output["n"]; // if (n != null && n == utxosToUse[i].vout) { // String address = // output["scriptPubKey"]?["addresses"]?[0] as String? ?? // output["scriptPubKey"]["address"] as String; // if (bitbox.Address.detectFormat(address) != // bitbox.Address.formatCashAddr) { // try { // address = bitbox.Address.toCashAddress(address); // } catch (_) { // rethrow; // } // } // // utxosToUse[i] = utxosToUse[i].copyWith(address: address); // } // } // } // // final derivePathType = addressType(address: utxosToUse[i].address!); // // signingData.add( // SigningData( // derivePathType: derivePathType, // utxo: utxosToUse[i], // ), // ); // } // // Map> receiveDerivations = {}; // Map> changeDerivations = {}; // // for (final sd in signingData) { // String? pubKey; // String? wif; // // // fetch receiving derivations if null // receiveDerivations[sd.derivePathType] ??= await _fetchDerivations( // chain: 0, // derivePathType: sd.derivePathType, // ); // final receiveDerivation = // receiveDerivations[sd.derivePathType]![sd.utxo.address!]; // // if (receiveDerivation != null) { // pubKey = receiveDerivation["pubKey"] as String; // wif = receiveDerivation["wif"] as String; // } else { // // fetch change derivations if null // changeDerivations[sd.derivePathType] ??= await _fetchDerivations( // chain: 1, // derivePathType: sd.derivePathType, // ); // final changeDerivation = // changeDerivations[sd.derivePathType]![sd.utxo.address!]; // if (changeDerivation != null) { // pubKey = changeDerivation["pubKey"] as String; // wif = changeDerivation["wif"] as String; // } // } // // if (wif == null || pubKey == null) { // final address = await db.getAddress(walletId, sd.utxo.address!); // if (address?.derivationPath != null) { // final node = await Bip32Utils.getBip32Node( // (await mnemonicString)!, // (await mnemonicPassphrase)!, // _network, // address!.derivationPath!.value, // ); // // wif = node.toWIF(); // pubKey = Format.uint8listToString(node.publicKey); // } // } // // if (wif != null && pubKey != null) { // final PaymentData data; // final Uint8List? redeemScript; // // switch (sd.derivePathType) { // case DerivePathType.bip44: // case DerivePathType.bch44: // data = P2PKH( // data: PaymentData( // pubkey: Format.stringToUint8List(pubKey), // ), // network: _network, // ).data; // redeemScript = null; // break; // // default: // throw Exception("DerivePathType unsupported"); // } // // final keyPair = ECPair.fromWIF( // wif, // network: _network, // ); // // sd.redeemScript = redeemScript; // sd.output = data.output; // sd.keyPair = keyPair; // } // } // // return signingData; // } catch (e, s) { // Logging.instance // .log("fetchBuildTxData() threw: $e,\n$s", level: LogLevel.Error); // rethrow; // } // } // // /// Builds and signs a transaction // Future> buildTransaction({ // required List utxosToUse, // required List utxoSigningData, // required List recipients, // required List satoshiAmounts, // }) async { // final builder = bitbox.Bitbox.transactionBuilder( // testnet: coin == Coin.bitcoincashTestnet, // ); // // // add the output based on the address provided in the testing data // for (int i = 0; i < recipients.length; i++) { // builder.addOutput(recipients[i], satoshiAmounts[i]); // } // // assert(utxosToUse.length == utxoSigningData.length); // // final List<({bitbox.ECPair ecPair, int sats})> signingData = []; // // for (final sd in utxoSigningData) { // final utxo = bitbox.Utxo( // sd.utxo.txid, // sd.utxo.vout, // bitbox.BitcoinCash.fromSatoshi(sd.utxo.value), // sd.utxo.value, // 0, // MINIMUM_CONFIRMATIONS + 1, // why +1 ? // ); // // // add the utxo as an input for the transaction // builder.addInput(utxo.txid, utxo.vout); // // // prepare signing data // signingData.add( // ( // ecPair: bitbox.ECPair.fromWIF(sd.keyPair!.toWIF()), // sats: utxo.satoshis, // ), // ); // } // // for (int i = 0; i < signingData.length; i++) { // builder.sign( // i, // signingData[i].ecPair, // signingData[i].sats, // ); // } // // // build the transaction // final tx = builder.build(); // final txHex = tx.toHex(); // final vSize = tx.virtualSize(); // //todo: check if print needed // Logger.print("bch raw hex: $txHex"); // // return {"hex": txHex, "vSize": vSize}; // } // // @override // Future fullRescan( // int maxUnusedAddressGap, // int maxNumberOfIndexesToCheck, // ) async { // Logging.instance.log("Starting full rescan!", level: LogLevel.Info); // longMutex = true; // GlobalEventBus.instance.fire( // WalletSyncStatusChangedEvent( // WalletSyncStatus.syncing, // walletId, // coin, // ), // ); // // // clear cache // await _cachedElectrumXClient.clearSharedTransactionCache(coin: coin); // // // clear blockchain info // await db.deleteWalletBlockchainData(walletId); // await _deleteDerivations(); // // try { // final _mnemonic = await mnemonicString; // final _mnemonicPassphrase = await mnemonicPassphrase; // if (_mnemonicPassphrase == null) { // Logging.instance.log( // "Exception in fullRescan: mnemonic passphrase null, possible migration issue; if using internal builds, delete wallet and restore from seed, if using a release build, please file bug report", // level: LogLevel.Error); // } // // await _recoverWalletFromBIP32SeedPhrase( // mnemonic: _mnemonic!, // mnemonicPassphrase: _mnemonicPassphrase!, // maxUnusedAddressGap: maxUnusedAddressGap, // maxNumberOfIndexesToCheck: maxNumberOfIndexesToCheck, // isRescan: true, // ); // // longMutex = false; // await refresh(); // Logging.instance.log("Full rescan complete!", level: LogLevel.Info); // GlobalEventBus.instance.fire( // WalletSyncStatusChangedEvent( // WalletSyncStatus.synced, // walletId, // coin, // ), // ); // } catch (e, s) { // GlobalEventBus.instance.fire( // WalletSyncStatusChangedEvent( // WalletSyncStatus.unableToSync, // walletId, // coin, // ), // ); // // longMutex = false; // Logging.instance.log("Exception rethrown from fullRescan(): $e\n$s", // level: LogLevel.Error); // rethrow; // } // } // // Future _deleteDerivations() async { // // P2PKH derivations // await _secureStore.delete(key: "${walletId}_receiveDerivationsP2PKH"); // await _secureStore.delete(key: "${walletId}_changeDerivationsP2PKH"); // // // P2SH derivations // await _secureStore.delete(key: "${walletId}_receiveDerivationsP2SH"); // await _secureStore.delete(key: "${walletId}_changeDerivationsP2SH"); // } // // @override // set isFavorite(bool markFavorite) { // _isFavorite = markFavorite; // updateCachedIsFavorite(markFavorite); // } // // @override // bool get isFavorite => _isFavorite ??= getCachedIsFavorite(); // // bool? _isFavorite; // // @override // bool get isRefreshing => refreshMutex; // // bool isActive = false; // // @override // void Function(bool)? get onIsActiveWalletChanged => // (isActive) => this.isActive = isActive; // // @override // Future estimateFeeFor(Amount amount, int feeRate) async { // final available = balance.spendable; // // if (available == amount) { // return amount - (await sweepAllEstimate(feeRate)); // } else if (amount <= Amount.zero || amount > available) { // return roughFeeEstimate(1, 2, feeRate); // } // // Amount runningBalance = Amount( // rawValue: BigInt.zero, // fractionDigits: coin.decimals, // ); // int inputCount = 0; // for (final output in (await utxos)) { // if (!output.isBlocked) { // runningBalance += Amount( // rawValue: BigInt.from(output.value), // fractionDigits: coin.decimals, // ); // inputCount++; // if (runningBalance > amount) { // break; // } // } // } // // final oneOutPutFee = roughFeeEstimate(inputCount, 1, feeRate); // final twoOutPutFee = roughFeeEstimate(inputCount, 2, feeRate); // // if (runningBalance - amount > oneOutPutFee) { // if (runningBalance - amount > oneOutPutFee + DUST_LIMIT) { // final change = runningBalance - amount - twoOutPutFee; // if (change > DUST_LIMIT && // runningBalance - amount - change == twoOutPutFee) { // return runningBalance - amount - change; // } else { // return runningBalance - amount; // } // } else { // return runningBalance - amount; // } // } else if (runningBalance - amount == oneOutPutFee) { // return oneOutPutFee; // } else { // return twoOutPutFee; // } // } // // // TODO: correct formula for bch? // Amount roughFeeEstimate(int inputCount, int outputCount, int feeRatePerKB) { // return Amount( // rawValue: BigInt.from(((181 * inputCount) + (34 * outputCount) + 10) * // (feeRatePerKB / 1000).ceil()), // fractionDigits: coin.decimals, // ); // } // // Future sweepAllEstimate(int feeRate) async { // int available = 0; // int inputCount = 0; // for (final output in (await utxos)) { // if (!output.isBlocked && // output.isConfirmed(storedChainHeight, MINIMUM_CONFIRMATIONS)) { // available += output.value; // inputCount++; // } // } // // // transaction will only have 1 output minus the fee // final estimatedFee = roughFeeEstimate(inputCount, 1, feeRate); // // return Amount( // rawValue: BigInt.from(available), // fractionDigits: coin.decimals, // ) - // estimatedFee; // } // // @override // Future generateNewAddress() async { // try { // final currentReceiving = await _currentReceivingAddress; // // final newReceivingIndex = currentReceiving.derivationIndex + 1; // // // Use new index to derive a new receiving address // final newReceivingAddress = await _generateAddressForChain( // 0, newReceivingIndex, DerivePathTypeExt.primaryFor(coin)); // // // Add that new receiving address // await db.putAddress(newReceivingAddress); // // return true; // } catch (e, s) { // Logging.instance.log( // "Exception rethrown from generateNewAddress(): $e\n$s", // level: LogLevel.Error); // return false; // } // } // // @override // Future get xpub async { // final node = await Bip32Utils.getBip32Root( // (await mnemonic).join(" "), // await mnemonicPassphrase ?? "", // _network, // ); // // return node.neutered().toBase58(); // } // } // // // Bitcoincash Network // final bitcoincash = NetworkType( // messagePrefix: '\x18Bitcoin Signed Message:\n', // bech32: 'bc', // bip32: Bip32Type(public: 0x0488b21e, private: 0x0488ade4), // pubKeyHash: 0x00, // scriptHash: 0x05, // wif: 0x80); // // final bitcoincashtestnet = NetworkType( // messagePrefix: '\x18Bitcoin Signed Message:\n', // bech32: 'tb', // bip32: Bip32Type(public: 0x043587cf, private: 0x04358394), // pubKeyHash: 0x6f, // scriptHash: 0xc4, // wif: 0xef);