mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-11-17 17:57:40 +00:00
3184 lines
108 KiB
Dart
3184 lines
108 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:typed_data';
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import 'package:bech32/bech32.dart';
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import 'package:bip32/bip32.dart' as bip32;
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import 'package:bip39/bip39.dart' as bip39;
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import 'package:bitcoindart/bitcoindart.dart';
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import 'package:bs58check/bs58check.dart' as bs58check;
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import 'package:crypto/crypto.dart';
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import 'package:decimal/decimal.dart';
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import 'package:devicelocale/devicelocale.dart';
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import 'package:flutter/foundation.dart';
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import 'package:http/http.dart';
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import 'package:stackwallet/electrumx_rpc/cached_electrumx.dart';
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import 'package:stackwallet/electrumx_rpc/electrumx.dart';
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import 'package:stackwallet/hive/db.dart';
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import 'package:stackwallet/models/models.dart' as models;
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import 'package:stackwallet/models/paymint/fee_object_model.dart';
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import 'package:stackwallet/models/paymint/transactions_model.dart';
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import 'package:stackwallet/models/paymint/utxo_model.dart';
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import 'package:stackwallet/services/coins/coin_paynym_extension.dart';
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import 'package:stackwallet/services/coins/coin_service.dart';
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import 'package:stackwallet/services/event_bus/events/global/node_connection_status_changed_event.dart';
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import 'package:stackwallet/services/event_bus/events/global/refresh_percent_changed_event.dart';
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import 'package:stackwallet/services/event_bus/events/global/updated_in_background_event.dart';
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import 'package:stackwallet/services/event_bus/events/global/wallet_sync_status_changed_event.dart';
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import 'package:stackwallet/services/event_bus/global_event_bus.dart';
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import 'package:stackwallet/services/node_service.dart';
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import 'package:stackwallet/services/notifications_api.dart';
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import 'package:stackwallet/services/price.dart';
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import 'package:stackwallet/services/transaction_notification_tracker.dart';
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import 'package:stackwallet/utilities/assets.dart';
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import 'package:stackwallet/utilities/constants.dart';
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import 'package:stackwallet/utilities/default_nodes.dart';
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import 'package:stackwallet/utilities/enums/coin_enum.dart';
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import 'package:stackwallet/utilities/enums/fee_rate_type_enum.dart';
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import 'package:stackwallet/utilities/flutter_secure_storage_interface.dart';
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import 'package:stackwallet/utilities/format.dart';
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import 'package:stackwallet/utilities/logger.dart';
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import 'package:stackwallet/utilities/prefs.dart';
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import 'package:tuple/tuple.dart';
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import 'package:uuid/uuid.dart';
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const int MINIMUM_CONFIRMATIONS = 3;
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const int DUST_LIMIT = 1000000;
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const String GENESIS_HASH_MAINNET =
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"1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691";
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const String GENESIS_HASH_TESTNET =
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"bb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e";
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enum DerivePathType { bip44 }
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bip32.BIP32 getBip32Node(int chain, int index, String mnemonic,
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NetworkType network, DerivePathType derivePathType) {
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final root = getBip32Root(mnemonic, network);
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final node = getBip32NodeFromRoot(chain, index, root, derivePathType);
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return node;
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}
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/// wrapper for compute()
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bip32.BIP32 getBip32NodeWrapper(
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Tuple5<int, int, String, NetworkType, DerivePathType> args,
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) {
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return getBip32Node(
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args.item1,
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args.item2,
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args.item3,
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args.item4,
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args.item5,
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);
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}
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bip32.BIP32 getBip32NodeFromRoot(
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int chain, int index, bip32.BIP32 root, DerivePathType derivePathType) {
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String coinType;
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switch (root.network.wif) {
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case 0x9e: // doge mainnet wif
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coinType = "3"; // doge mainnet
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break;
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case 0xf1: // doge testnet wif
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coinType = "1"; // doge testnet
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break;
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default:
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throw Exception("Invalid Dogecoin network type used!");
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}
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switch (derivePathType) {
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case DerivePathType.bip44:
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return root.derivePath("m/44'/$coinType'/0'/$chain/$index");
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default:
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throw Exception("DerivePathType must not be null.");
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}
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}
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/// wrapper for compute()
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bip32.BIP32 getBip32NodeFromRootWrapper(
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Tuple4<int, int, bip32.BIP32, DerivePathType> args,
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) {
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return getBip32NodeFromRoot(
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args.item1,
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args.item2,
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args.item3,
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args.item4,
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);
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}
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bip32.BIP32 getBip32Root(String mnemonic, NetworkType network) {
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final seed = bip39.mnemonicToSeed(mnemonic);
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final networkType = bip32.NetworkType(
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wif: network.wif,
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bip32: bip32.Bip32Type(
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public: network.bip32.public,
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private: network.bip32.private,
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),
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);
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final root = bip32.BIP32.fromSeed(seed, networkType);
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return root;
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}
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/// wrapper for compute()
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bip32.BIP32 getBip32RootWrapper(Tuple2<String, NetworkType> args) {
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return getBip32Root(args.item1, args.item2);
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}
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class DogecoinWallet extends CoinServiceAPI {
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static const integrationTestFlag =
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bool.fromEnvironment("IS_INTEGRATION_TEST");
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final _prefs = Prefs.instance;
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Timer? timer;
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late Coin _coin;
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late final TransactionNotificationTracker txTracker;
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NetworkType get network {
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switch (coin) {
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case Coin.dogecoin:
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return dogecoin;
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case Coin.dogecoinTestNet:
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return dogecointestnet;
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default:
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throw Exception("Dogecoin network type not set!");
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}
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}
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List<UtxoObject> outputsList = [];
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@override
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Coin get coin => _coin;
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@override
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Future<List<String>> get allOwnAddresses =>
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_allOwnAddresses ??= _fetchAllOwnAddresses();
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Future<List<String>>? _allOwnAddresses;
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Future<UtxoData>? _utxoData;
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Future<UtxoData> get utxoData => _utxoData ??= _fetchUtxoData();
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@override
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Future<List<UtxoObject>> get unspentOutputs async =>
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(await utxoData).unspentOutputArray;
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@override
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Future<Decimal> get availableBalance async {
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final data = await utxoData;
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return Format.satoshisToAmount(
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data.satoshiBalance - data.satoshiBalanceUnconfirmed,
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coin: coin);
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}
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@override
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Future<Decimal> get pendingBalance async {
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final data = await utxoData;
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return Format.satoshisToAmount(data.satoshiBalanceUnconfirmed, coin: coin);
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}
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@override
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Future<Decimal> get balanceMinusMaxFee async =>
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(await availableBalance) -
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(Decimal.fromInt((await maxFee)) /
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Decimal.fromInt(Constants.satsPerCoin(coin)))
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.toDecimal();
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@override
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Future<Decimal> get totalBalance async {
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if (!isActive) {
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final totalBalance = DB.instance
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.get<dynamic>(boxName: walletId, key: 'totalBalance') as int?;
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if (totalBalance == null) {
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final data = await utxoData;
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return Format.satoshisToAmount(data.satoshiBalance, coin: coin);
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} else {
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return Format.satoshisToAmount(totalBalance, coin: coin);
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}
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}
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final data = await utxoData;
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return Format.satoshisToAmount(data.satoshiBalance, coin: coin);
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}
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@override
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Future<String> get currentReceivingAddress =>
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_currentReceivingAddressP2PKH ??=
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getCurrentAddressForChain(0, DerivePathType.bip44);
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Future<String>? _currentReceivingAddressP2PKH;
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@override
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Future<void> exit() async {
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_hasCalledExit = true;
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timer?.cancel();
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timer = null;
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stopNetworkAlivePinging();
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}
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bool _hasCalledExit = false;
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@override
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bool get hasCalledExit => _hasCalledExit;
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@override
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Future<FeeObject> get fees => _feeObject ??= _getFees();
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Future<FeeObject>? _feeObject;
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@override
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Future<int> get maxFee async {
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final fee = (await fees).fast;
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final satsFee = Format.satoshisToAmount(fee, coin: coin) *
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Decimal.fromInt(Constants.satsPerCoin(coin));
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return satsFee.floor().toBigInt().toInt();
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}
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@override
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Future<List<String>> get mnemonic => _getMnemonicList();
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Future<int> get chainHeight async {
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try {
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final result = await _electrumXClient.getBlockHeadTip();
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return result["height"] as int;
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} catch (e, s) {
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Logging.instance.log("Exception caught in chainHeight: $e\n$s",
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level: LogLevel.Error);
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return -1;
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}
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}
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Future<int> get storedChainHeight async {
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final storedHeight = DB.instance
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.get<dynamic>(boxName: walletId, key: "storedChainHeight") as int?;
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return storedHeight ?? 0;
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}
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Future<void> updateStoredChainHeight({required int newHeight}) async {
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await DB.instance.put<dynamic>(
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boxName: walletId, key: "storedChainHeight", value: newHeight);
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}
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DerivePathType addressType({required String address}) {
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Uint8List? decodeBase58;
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Segwit? decodeBech32;
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try {
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decodeBase58 = bs58check.decode(address);
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} catch (err) {
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// Base58check decode fail
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}
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if (decodeBase58 != null) {
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if (decodeBase58[0] == network.pubKeyHash) {
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// P2PKH
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return DerivePathType.bip44;
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}
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throw ArgumentError('Invalid version or Network mismatch');
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} else {
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try {
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decodeBech32 = segwit.decode(address);
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} catch (err) {
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// Bech32 decode fail
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}
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if (network.bech32 != decodeBech32!.hrp) {
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throw ArgumentError('Invalid prefix or Network mismatch');
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}
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if (decodeBech32.version != 0) {
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throw ArgumentError('Invalid address version');
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}
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}
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throw ArgumentError('$address has no matching Script');
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}
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bool longMutex = false;
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@override
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Future<void> recoverFromMnemonic({
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required String mnemonic,
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required int maxUnusedAddressGap,
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required int maxNumberOfIndexesToCheck,
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required int height,
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}) async {
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longMutex = true;
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final start = DateTime.now();
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try {
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Logging.instance.log("IS_INTEGRATION_TEST: $integrationTestFlag",
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level: LogLevel.Info);
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if (!integrationTestFlag) {
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final features = await electrumXClient.getServerFeatures();
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Logging.instance.log("features: $features", level: LogLevel.Info);
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switch (coin) {
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case Coin.dogecoin:
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if (features['genesis_hash'] != GENESIS_HASH_MAINNET) {
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throw Exception("genesis hash does not match main net!");
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}
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break;
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case Coin.dogecoinTestNet:
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if (features['genesis_hash'] != GENESIS_HASH_TESTNET) {
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throw Exception("genesis hash does not match test net!");
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}
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break;
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default:
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throw Exception(
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"Attempted to generate a DogecoinWallet using a non dogecoin coin type: ${coin.name}");
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}
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}
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// check to make sure we aren't overwriting a mnemonic
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// this should never fail
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if ((await _secureStore.read(key: '${_walletId}_mnemonic')) != null) {
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longMutex = false;
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throw Exception("Attempted to overwrite mnemonic on restore!");
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}
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await _secureStore.write(
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key: '${_walletId}_mnemonic', value: mnemonic.trim());
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await _recoverWalletFromBIP32SeedPhrase(
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mnemonic: mnemonic.trim(),
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maxUnusedAddressGap: maxUnusedAddressGap,
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maxNumberOfIndexesToCheck: maxNumberOfIndexesToCheck,
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);
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} catch (e, s) {
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Logging.instance.log(
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"Exception rethrown from recoverFromMnemonic(): $e\n$s",
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level: LogLevel.Error);
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longMutex = false;
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rethrow;
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}
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longMutex = false;
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final end = DateTime.now();
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Logging.instance.log(
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"$walletName recovery time: ${end.difference(start).inMilliseconds} millis",
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level: LogLevel.Info);
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}
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Future<Map<String, dynamic>> _checkGaps(
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int maxNumberOfIndexesToCheck,
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int maxUnusedAddressGap,
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int txCountBatchSize,
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bip32.BIP32 root,
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DerivePathType type,
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int account) async {
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List<String> addressArray = [];
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int returningIndex = -1;
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Map<String, Map<String, String>> derivations = {};
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int gapCounter = 0;
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for (int index = 0;
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index < maxNumberOfIndexesToCheck && gapCounter < maxUnusedAddressGap;
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index += txCountBatchSize) {
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List<String> iterationsAddressArray = [];
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Logging.instance.log(
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"index: $index, \t GapCounter $account ${type.name}: $gapCounter",
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level: LogLevel.Info);
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final _id = "k_$index";
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Map<String, String> txCountCallArgs = {};
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final Map<String, dynamic> receivingNodes = {};
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for (int j = 0; j < txCountBatchSize; j++) {
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final node = await compute(
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getBip32NodeFromRootWrapper,
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Tuple4(
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account,
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index + j,
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root,
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type,
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),
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);
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String? address;
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switch (type) {
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case DerivePathType.bip44:
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address = P2PKH(
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data: PaymentData(pubkey: node.publicKey), network: network)
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.data
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.address!;
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break;
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default:
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throw Exception("No Path type $type exists");
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}
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receivingNodes.addAll({
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"${_id}_$j": {
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"node": node,
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"address": address,
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}
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});
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txCountCallArgs.addAll({
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"${_id}_$j": address,
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});
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}
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// get address tx counts
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final counts = await _getBatchTxCount(addresses: txCountCallArgs);
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// check and add appropriate addresses
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for (int k = 0; k < txCountBatchSize; k++) {
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int count = counts["${_id}_$k"]!;
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if (count > 0) {
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final node = receivingNodes["${_id}_$k"];
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// add address to array
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addressArray.add(node["address"] as String);
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iterationsAddressArray.add(node["address"] as String);
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// set current index
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returningIndex = index + k;
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// reset counter
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gapCounter = 0;
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// add info to derivations
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derivations[node["address"] as String] = {
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"pubKey": Format.uint8listToString(
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(node["node"] as bip32.BIP32).publicKey),
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"wif": (node["node"] as bip32.BIP32).toWIF(),
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};
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}
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// increase counter when no tx history found
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if (count == 0) {
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gapCounter++;
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}
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}
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// cache all the transactions while waiting for the current function to finish.
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unawaited(getTransactionCacheEarly(iterationsAddressArray));
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}
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return {
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"addressArray": addressArray,
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"index": returningIndex,
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"derivations": derivations
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};
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}
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|
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Future<void> getTransactionCacheEarly(List<String> allAddresses) async {
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try {
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final List<Map<String, dynamic>> allTxHashes =
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await _fetchHistory(allAddresses);
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for (final txHash in allTxHashes) {
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try {
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unawaited(cachedElectrumXClient.getTransaction(
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txHash: txHash["tx_hash"] as String,
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verbose: true,
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coin: coin,
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));
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} catch (e) {
|
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continue;
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}
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}
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} catch (e) {
|
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//
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}
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}
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|
|
|
Future<void> _recoverWalletFromBIP32SeedPhrase({
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required String mnemonic,
|
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int maxUnusedAddressGap = 20,
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int maxNumberOfIndexesToCheck = 1000,
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}) async {
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longMutex = true;
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|
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Map<String, Map<String, String>> p2pkhReceiveDerivations = {};
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Map<String, Map<String, String>> p2pkhChangeDerivations = {};
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final root = await compute(getBip32RootWrapper, Tuple2(mnemonic, network));
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|
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List<String> p2pkhReceiveAddressArray = [];
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int p2pkhReceiveIndex = -1;
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List<String> p2pkhChangeAddressArray = [];
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int p2pkhChangeIndex = -1;
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|
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// actual size is 12 due to p2pkh so 12x1
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const txCountBatchSize = 12;
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|
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try {
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// receiving addresses
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Logging.instance
|
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.log("checking receiving addresses...", level: LogLevel.Info);
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final resultReceive44 = _checkGaps(maxNumberOfIndexesToCheck,
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maxUnusedAddressGap, txCountBatchSize, root, DerivePathType.bip44, 0);
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|
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Logging.instance
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.log("checking change addresses...", level: LogLevel.Info);
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// change addresses
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final resultChange44 = _checkGaps(maxNumberOfIndexesToCheck,
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maxUnusedAddressGap, txCountBatchSize, root, DerivePathType.bip44, 1);
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|
|
await Future.wait([
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resultReceive44,
|
|
resultChange44,
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]);
|
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|
|
p2pkhReceiveAddressArray =
|
|
(await resultReceive44)['addressArray'] as List<String>;
|
|
p2pkhReceiveIndex = (await resultReceive44)['index'] as int;
|
|
p2pkhReceiveDerivations = (await resultReceive44)['derivations']
|
|
as Map<String, Map<String, String>>;
|
|
|
|
p2pkhChangeAddressArray =
|
|
(await resultChange44)['addressArray'] as List<String>;
|
|
p2pkhChangeIndex = (await resultChange44)['index'] as int;
|
|
p2pkhChangeDerivations = (await resultChange44)['derivations']
|
|
as Map<String, Map<String, String>>;
|
|
|
|
// save the derivations (if any)
|
|
if (p2pkhReceiveDerivations.isNotEmpty) {
|
|
await addDerivations(
|
|
chain: 0,
|
|
derivePathType: DerivePathType.bip44,
|
|
derivationsToAdd: p2pkhReceiveDerivations);
|
|
}
|
|
if (p2pkhChangeDerivations.isNotEmpty) {
|
|
await addDerivations(
|
|
chain: 1,
|
|
derivePathType: DerivePathType.bip44,
|
|
derivationsToAdd: p2pkhChangeDerivations);
|
|
}
|
|
|
|
// 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
|
|
if (p2pkhReceiveIndex == -1) {
|
|
final address =
|
|
await _generateAddressForChain(0, 0, DerivePathType.bip44);
|
|
p2pkhReceiveAddressArray.add(address);
|
|
p2pkhReceiveIndex = 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.
|
|
if (p2pkhChangeIndex == -1) {
|
|
final address =
|
|
await _generateAddressForChain(1, 0, DerivePathType.bip44);
|
|
p2pkhChangeAddressArray.add(address);
|
|
p2pkhChangeIndex = 0;
|
|
}
|
|
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'receivingAddressesP2PKH',
|
|
value: p2pkhReceiveAddressArray);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'changeAddressesP2PKH',
|
|
value: p2pkhChangeAddressArray);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'receivingIndexP2PKH',
|
|
value: p2pkhReceiveIndex);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId, key: 'changeIndexP2PKH', value: p2pkhChangeIndex);
|
|
await DB.instance
|
|
.put<dynamic>(boxName: walletId, key: "id", value: _walletId);
|
|
await DB.instance
|
|
.put<dynamic>(boxName: walletId, key: "isFavorite", value: false);
|
|
|
|
longMutex = false;
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Exception rethrown from _recoverWalletFromBIP32SeedPhrase(): $e\n$s",
|
|
level: LogLevel.Info);
|
|
|
|
longMutex = false;
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<bool> 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<String> 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<Map<String, dynamic>> allTxs =
|
|
await _fetchHistory(allOwnAddresses);
|
|
final txData = await transactionData;
|
|
for (Map<String, dynamic> transaction in allTxs) {
|
|
if (txData.findTransaction(transaction['tx_hash'] as String) ==
|
|
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<void> getAllTxsToWatch(
|
|
TransactionData txData,
|
|
) async {
|
|
if (_hasCalledExit) return;
|
|
List<models.Transaction> unconfirmedTxnsToNotifyPending = [];
|
|
List<models.Transaction> unconfirmedTxnsToNotifyConfirmed = [];
|
|
|
|
// Get all unconfirmed incoming transactions
|
|
for (final chunk in txData.txChunks) {
|
|
for (final tx in chunk.transactions) {
|
|
if (tx.confirmedStatus) {
|
|
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) {
|
|
if (tx.txType == "Received") {
|
|
unawaited(NotificationApi.showNotification(
|
|
title: "Incoming transaction",
|
|
body: walletName,
|
|
walletId: walletId,
|
|
iconAssetName: Assets.svg.iconFor(coin: coin),
|
|
date: DateTime.now(),
|
|
shouldWatchForUpdates: tx.confirmations < MINIMUM_CONFIRMATIONS,
|
|
coinName: coin.name,
|
|
txid: tx.txid,
|
|
confirmations: tx.confirmations,
|
|
requiredConfirmations: MINIMUM_CONFIRMATIONS,
|
|
));
|
|
await txTracker.addNotifiedPending(tx.txid);
|
|
} else if (tx.txType == "Sent") {
|
|
unawaited(NotificationApi.showNotification(
|
|
title: "Sending transaction",
|
|
body: walletName,
|
|
walletId: walletId,
|
|
iconAssetName: Assets.svg.iconFor(coin: coin),
|
|
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
|
|
shouldWatchForUpdates: tx.confirmations < MINIMUM_CONFIRMATIONS,
|
|
coinName: coin.name,
|
|
txid: tx.txid,
|
|
confirmations: tx.confirmations,
|
|
requiredConfirmations: MINIMUM_CONFIRMATIONS,
|
|
));
|
|
await txTracker.addNotifiedPending(tx.txid);
|
|
}
|
|
}
|
|
|
|
// notify on confirmed
|
|
for (final tx in unconfirmedTxnsToNotifyConfirmed) {
|
|
if (tx.txType == "Received") {
|
|
unawaited(NotificationApi.showNotification(
|
|
title: "Incoming transaction confirmed",
|
|
body: walletName,
|
|
walletId: walletId,
|
|
iconAssetName: Assets.svg.iconFor(coin: coin),
|
|
date: DateTime.now(),
|
|
shouldWatchForUpdates: false,
|
|
coinName: coin.name,
|
|
));
|
|
|
|
await txTracker.addNotifiedConfirmed(tx.txid);
|
|
} else if (tx.txType == "Sent") {
|
|
unawaited(NotificationApi.showNotification(
|
|
title: "Outgoing transaction confirmed",
|
|
body: walletName,
|
|
walletId: walletId,
|
|
iconAssetName: Assets.svg.iconFor(coin: coin),
|
|
date: DateTime.now(),
|
|
shouldWatchForUpdates: false,
|
|
coinName: coin.name,
|
|
));
|
|
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<void> 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) {
|
|
if (currentHeight != -1) {
|
|
// -1 failed to fetch current height
|
|
unawaited(updateStoredChainHeight(newHeight: currentHeight));
|
|
}
|
|
|
|
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.2, walletId));
|
|
await checkChangeAddressForTransactions(DerivePathType.bip44);
|
|
|
|
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.3, walletId));
|
|
await _checkCurrentReceivingAddressesForTransactions();
|
|
|
|
final newTxData = _fetchTransactionData();
|
|
GlobalEventBus.instance
|
|
.fire(RefreshPercentChangedEvent(0.50, walletId));
|
|
|
|
final newUtxoData = _fetchUtxoData();
|
|
final feeObj = _getFees();
|
|
GlobalEventBus.instance
|
|
.fire(RefreshPercentChangedEvent(0.60, walletId));
|
|
|
|
_transactionData = Future(() => newTxData);
|
|
|
|
GlobalEventBus.instance
|
|
.fire(RefreshPercentChangedEvent(0.70, walletId));
|
|
_feeObject = Future(() => feeObj);
|
|
_utxoData = Future(() => newUtxoData);
|
|
GlobalEventBus.instance
|
|
.fire(RefreshPercentChangedEvent(0.80, walletId));
|
|
|
|
await getAllTxsToWatch(await newTxData);
|
|
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: 30), (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<Map<String, dynamic>> prepareSend({
|
|
required String address,
|
|
required int satoshiAmount,
|
|
Map<String, dynamic>? args,
|
|
}) async {
|
|
try {
|
|
final feeRateType = args?["feeRate"];
|
|
final feeRateAmount = args?["feeRateAmount"];
|
|
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;
|
|
}
|
|
rate = fee;
|
|
} else {
|
|
rate = feeRateAmount as int;
|
|
}
|
|
// check for send all
|
|
bool isSendAll = false;
|
|
final balance =
|
|
Format.decimalAmountToSatoshis(await availableBalance, coin);
|
|
if (satoshiAmount == balance) {
|
|
isSendAll = true;
|
|
}
|
|
|
|
final result =
|
|
await coinSelection(satoshiAmount, rate, address, isSendAll);
|
|
Logging.instance.log("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<String, dynamic>;
|
|
} 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<String> 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);
|
|
return txHash;
|
|
} catch (e, s) {
|
|
Logging.instance.log("Exception rethrown from confirmSend(): $e\n$s",
|
|
level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<String> send({
|
|
required String toAddress,
|
|
required int amount,
|
|
Map<String, String> args = const {},
|
|
}) async {
|
|
try {
|
|
final txData = await prepareSend(
|
|
address: toAddress, satoshiAmount: amount, args: args);
|
|
final txHash = await confirmSend(txData: txData);
|
|
return txHash;
|
|
} catch (e, s) {
|
|
Logging.instance
|
|
.log("Exception rethrown from send(): $e\n$s", level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<bool> 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();
|
|
_isConnected = hasNetwork;
|
|
if (_isConnected != hasNetwork) {
|
|
NodeConnectionStatus status = hasNetwork
|
|
? NodeConnectionStatus.connected
|
|
: NodeConnectionStatus.disconnected;
|
|
GlobalEventBus.instance
|
|
.fire(NodeConnectionStatusChangedEvent(status, walletId, coin));
|
|
}
|
|
}
|
|
|
|
void stopNetworkAlivePinging() {
|
|
_networkAliveTimer?.cancel();
|
|
_networkAliveTimer = null;
|
|
}
|
|
|
|
bool _isConnected = false;
|
|
|
|
@override
|
|
bool get isConnected => _isConnected;
|
|
|
|
@override
|
|
Future<void> initializeNew() async {
|
|
Logging.instance
|
|
.log("Generating new ${coin.prettyName} wallet.", level: LogLevel.Info);
|
|
|
|
if ((DB.instance.get<dynamic>(boxName: walletId, key: "id")) != null) {
|
|
throw Exception(
|
|
"Attempted to initialize a new wallet using an existing wallet ID!");
|
|
}
|
|
await _prefs.init();
|
|
try {
|
|
await _generateNewWallet();
|
|
} catch (e, s) {
|
|
Logging.instance.log("Exception rethrown from initializeNew(): $e\n$s",
|
|
level: LogLevel.Fatal);
|
|
rethrow;
|
|
}
|
|
await Future.wait([
|
|
DB.instance.put<dynamic>(boxName: walletId, key: "id", value: _walletId),
|
|
DB.instance
|
|
.put<dynamic>(boxName: walletId, key: "isFavorite", value: false),
|
|
]);
|
|
}
|
|
|
|
@override
|
|
Future<void> initializeExisting() async {
|
|
Logging.instance.log("Opening existing ${coin.prettyName} wallet.",
|
|
level: LogLevel.Info);
|
|
|
|
if ((DB.instance.get<dynamic>(boxName: walletId, key: "id")) == null) {
|
|
throw Exception(
|
|
"Attempted to initialize an existing wallet using an unknown wallet ID!");
|
|
}
|
|
await _prefs.init();
|
|
final data =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: "latest_tx_model")
|
|
as TransactionData?;
|
|
if (data != null) {
|
|
_transactionData = Future(() => data);
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<TransactionData> get transactionData =>
|
|
_transactionData ??= _fetchTransactionData();
|
|
Future<TransactionData>? _transactionData;
|
|
|
|
TransactionData? cachedTxData;
|
|
|
|
// 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<void> updateSentCachedTxData(Map<String, dynamic> txData) async {
|
|
final priceData =
|
|
await _priceAPI.getPricesAnd24hChange(baseCurrency: _prefs.currency);
|
|
Decimal currentPrice = priceData[coin]?.item1 ?? Decimal.zero;
|
|
final locale =
|
|
Platform.isWindows ? "en_US" : await Devicelocale.currentLocale;
|
|
final String worthNow = Format.localizedStringAsFixed(
|
|
value:
|
|
((currentPrice * Decimal.fromInt(txData["recipientAmt"] as int)) /
|
|
Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
.toDecimal(scaleOnInfinitePrecision: 2),
|
|
decimalPlaces: 2,
|
|
locale: locale!);
|
|
|
|
final tx = models.Transaction(
|
|
txid: txData["txid"] as String,
|
|
confirmedStatus: false,
|
|
timestamp: DateTime.now().millisecondsSinceEpoch ~/ 1000,
|
|
txType: "Sent",
|
|
amount: txData["recipientAmt"] as int,
|
|
worthNow: worthNow,
|
|
worthAtBlockTimestamp: worthNow,
|
|
fees: txData["fee"] as int,
|
|
inputSize: 0,
|
|
outputSize: 0,
|
|
inputs: [],
|
|
outputs: [],
|
|
address: txData["address"] as String,
|
|
height: -1,
|
|
confirmations: 0,
|
|
);
|
|
|
|
if (cachedTxData == null) {
|
|
final data = await _fetchTransactionData();
|
|
_transactionData = Future(() => data);
|
|
}
|
|
|
|
final transactions = cachedTxData!.getAllTransactions();
|
|
transactions[tx.txid] = tx;
|
|
cachedTxData = models.TransactionData.fromMap(transactions);
|
|
_transactionData = Future(() => cachedTxData!);
|
|
}
|
|
|
|
@override
|
|
bool validateAddress(String address) {
|
|
return Address.validateAddress(address, network);
|
|
}
|
|
|
|
@override
|
|
String get walletId => _walletId;
|
|
late String _walletId;
|
|
|
|
@override
|
|
String get walletName => _walletName;
|
|
late String _walletName;
|
|
|
|
// setter for updating on rename
|
|
@override
|
|
set walletName(String newName) => _walletName = newName;
|
|
|
|
late ElectrumX _electrumXClient;
|
|
|
|
ElectrumX get electrumXClient => _electrumXClient;
|
|
|
|
late CachedElectrumX _cachedElectrumXClient;
|
|
|
|
CachedElectrumX get cachedElectrumXClient => _cachedElectrumXClient;
|
|
|
|
late SecureStorageInterface _secureStore;
|
|
|
|
late PriceAPI _priceAPI;
|
|
|
|
DogecoinWallet({
|
|
required String walletId,
|
|
required String walletName,
|
|
required Coin coin,
|
|
required ElectrumX client,
|
|
required CachedElectrumX cachedClient,
|
|
required TransactionNotificationTracker tracker,
|
|
PriceAPI? priceAPI,
|
|
required SecureStorageInterface secureStore,
|
|
}) {
|
|
txTracker = tracker;
|
|
_walletId = walletId;
|
|
_walletName = walletName;
|
|
_coin = coin;
|
|
_electrumXClient = client;
|
|
_cachedElectrumXClient = cachedClient;
|
|
|
|
_priceAPI = priceAPI ?? PriceAPI(Client());
|
|
_secureStore = secureStore;
|
|
}
|
|
|
|
@override
|
|
Future<void> 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();
|
|
_cachedElectrumXClient = CachedElectrumX.from(
|
|
node: newNode,
|
|
prefs: _prefs,
|
|
failovers: failovers,
|
|
);
|
|
_electrumXClient = ElectrumX.from(
|
|
node: newNode,
|
|
prefs: _prefs,
|
|
failovers: failovers,
|
|
);
|
|
|
|
if (shouldRefresh) {
|
|
unawaited(refresh());
|
|
}
|
|
}
|
|
|
|
Future<List<String>> _getMnemonicList() async {
|
|
final mnemonicString =
|
|
await _secureStore.read(key: '${_walletId}_mnemonic');
|
|
if (mnemonicString == null) {
|
|
return [];
|
|
}
|
|
final List<String> data = mnemonicString.split(' ');
|
|
return data;
|
|
}
|
|
|
|
Future<ElectrumXNode> 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<List<String>> _fetchAllOwnAddresses() async {
|
|
final List<String> allAddresses = [];
|
|
|
|
final receivingAddressesP2PKH = DB.instance.get<dynamic>(
|
|
boxName: walletId, key: 'receivingAddressesP2PKH') as List<dynamic>;
|
|
final changeAddressesP2PKH =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'changeAddressesP2PKH')
|
|
as List<dynamic>;
|
|
|
|
// for (var i = 0; i < receivingAddresses.length; i++) {
|
|
// if (!allAddresses.contains(receivingAddresses[i])) {
|
|
// allAddresses.add(receivingAddresses[i]);
|
|
// }
|
|
// }
|
|
// for (var i = 0; i < changeAddresses.length; i++) {
|
|
// if (!allAddresses.contains(changeAddresses[i])) {
|
|
// allAddresses.add(changeAddresses[i]);
|
|
// }
|
|
// }
|
|
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<FeeObject> _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: Format.decimalAmountToSatoshis(fast, coin),
|
|
medium: Format.decimalAmountToSatoshis(medium, coin),
|
|
slow: Format.decimalAmountToSatoshis(slow, coin),
|
|
);
|
|
|
|
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<void> _generateNewWallet() 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.dogecoin:
|
|
if (features['genesis_hash'] != GENESIS_HASH_MAINNET) {
|
|
throw Exception("genesis hash does not match main net!");
|
|
}
|
|
break;
|
|
case Coin.dogecoinTestNet:
|
|
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$s", level: LogLevel.Info);
|
|
}
|
|
}
|
|
|
|
// this should never fail
|
|
if ((await _secureStore.read(key: '${_walletId}_mnemonic')) != null) {
|
|
throw Exception(
|
|
"Attempted to overwrite mnemonic on generate new wallet!");
|
|
}
|
|
await _secureStore.write(
|
|
key: '${_walletId}_mnemonic',
|
|
value: bip39.generateMnemonic(strength: 256));
|
|
|
|
// Set relevant indexes
|
|
await DB.instance
|
|
.put<dynamic>(boxName: walletId, key: "receivingIndexP2PKH", value: 0);
|
|
await DB.instance
|
|
.put<dynamic>(boxName: walletId, key: "changeIndexP2PKH", value: 0);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'blocked_tx_hashes',
|
|
value: ["0xdefault"],
|
|
); // A list of transaction hashes to represent frozen utxos in wallet
|
|
// initialize address book entries
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'addressBookEntries',
|
|
value: <String, String>{});
|
|
|
|
// Generate and add addresses to relevant arrays
|
|
// final initialReceivingAddress =
|
|
// await _generateAddressForChain(0, 0, DerivePathType.bip44);
|
|
// final initialChangeAddress =
|
|
// await _generateAddressForChain(1, 0, DerivePathType.bip44);
|
|
final initialReceivingAddressP2PKH =
|
|
await _generateAddressForChain(0, 0, DerivePathType.bip44);
|
|
final initialChangeAddressP2PKH =
|
|
await _generateAddressForChain(1, 0, DerivePathType.bip44);
|
|
|
|
// await _addToAddressesArrayForChain(
|
|
// initialReceivingAddress, 0, DerivePathType.bip44);
|
|
// await _addToAddressesArrayForChain(
|
|
// initialChangeAddress, 1, DerivePathType.bip44);
|
|
await _addToAddressesArrayForChain(
|
|
initialReceivingAddressP2PKH, 0, DerivePathType.bip44);
|
|
await _addToAddressesArrayForChain(
|
|
initialChangeAddressP2PKH, 1, DerivePathType.bip44);
|
|
|
|
// this._currentReceivingAddress = Future(() => initialReceivingAddress);
|
|
_currentReceivingAddressP2PKH = Future(() => initialReceivingAddressP2PKH);
|
|
|
|
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<String> _generateAddressForChain(
|
|
int chain,
|
|
int index,
|
|
DerivePathType derivePathType,
|
|
) async {
|
|
final mnemonic = await _secureStore.read(key: '${_walletId}_mnemonic');
|
|
final node = await compute(
|
|
getBip32NodeWrapper,
|
|
Tuple5(
|
|
chain,
|
|
index,
|
|
mnemonic!,
|
|
network,
|
|
derivePathType,
|
|
),
|
|
);
|
|
final data = PaymentData(pubkey: node.publicKey);
|
|
String address;
|
|
|
|
switch (derivePathType) {
|
|
case DerivePathType.bip44:
|
|
address = P2PKH(data: data, network: network).data.address!;
|
|
break;
|
|
// default:
|
|
// // should never hit this due to all enum cases handled
|
|
// return null;
|
|
}
|
|
|
|
// add generated address & info to derivations
|
|
await addDerivation(
|
|
chain: chain,
|
|
address: address,
|
|
pubKey: Format.uint8listToString(node.publicKey),
|
|
wif: node.toWIF(),
|
|
derivePathType: derivePathType,
|
|
);
|
|
|
|
return address;
|
|
}
|
|
|
|
/// Increases the index for either the internal or external chain, depending on [chain].
|
|
/// [chain] - Use 0 for receiving (external), 1 for change (internal). Should not be any other value!
|
|
Future<void> _incrementAddressIndexForChain(
|
|
int chain, DerivePathType derivePathType) async {
|
|
// Here we assume chain == 1 if it isn't 0
|
|
String indexKey = chain == 0 ? "receivingIndex" : "changeIndex";
|
|
switch (derivePathType) {
|
|
case DerivePathType.bip44:
|
|
indexKey += "P2PKH";
|
|
break;
|
|
}
|
|
|
|
final newIndex =
|
|
(DB.instance.get<dynamic>(boxName: walletId, key: indexKey)) + 1;
|
|
await DB.instance
|
|
.put<dynamic>(boxName: walletId, key: indexKey, value: newIndex);
|
|
}
|
|
|
|
/// Adds [address] to the relevant chain's address array, which is determined by [chain].
|
|
/// [address] - Expects a standard native segwit address
|
|
/// [chain] - Use 0 for receiving (external), 1 for change (internal). Should not be any other value!
|
|
Future<void> _addToAddressesArrayForChain(
|
|
String address, int chain, DerivePathType derivePathType) async {
|
|
String chainArray = '';
|
|
if (chain == 0) {
|
|
chainArray = 'receivingAddresses';
|
|
} else {
|
|
chainArray = 'changeAddresses';
|
|
}
|
|
switch (derivePathType) {
|
|
case DerivePathType.bip44:
|
|
chainArray += "P2PKH";
|
|
break;
|
|
}
|
|
|
|
final addressArray =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: chainArray);
|
|
if (addressArray == null) {
|
|
Logging.instance.log(
|
|
'Attempting to add the following to $chainArray array for chain $chain:${[
|
|
address
|
|
]}',
|
|
level: LogLevel.Info);
|
|
await DB.instance
|
|
.put<dynamic>(boxName: walletId, key: chainArray, value: [address]);
|
|
} else {
|
|
// Make a deep copy of the existing list
|
|
final List<String> newArray = [];
|
|
addressArray
|
|
.forEach((dynamic _address) => newArray.add(_address as String));
|
|
newArray.add(address); // Add the address passed into the method
|
|
await DB.instance
|
|
.put<dynamic>(boxName: walletId, key: chainArray, value: newArray);
|
|
}
|
|
}
|
|
|
|
/// 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<String> getCurrentAddressForChain(
|
|
int chain, DerivePathType derivePathType) async {
|
|
// Here, we assume that chain == 1 if it isn't 0
|
|
String arrayKey = chain == 0 ? "receivingAddresses" : "changeAddresses";
|
|
switch (derivePathType) {
|
|
case DerivePathType.bip44:
|
|
arrayKey += "P2PKH";
|
|
break;
|
|
}
|
|
final internalChainArray =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: arrayKey);
|
|
return internalChainArray.last as String;
|
|
}
|
|
|
|
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;
|
|
}
|
|
return key;
|
|
}
|
|
|
|
Future<Map<String, dynamic>> _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<String, dynamic>.from(
|
|
jsonDecode(derivationsString ?? "{}") as Map);
|
|
}
|
|
|
|
/// Add a single derivation to the local secure storage for [chain] and
|
|
/// [derivePathType] where [chain] must either be 1 for change or 0 for receive.
|
|
/// This will overwrite a previous entry where the address of the new derivation
|
|
/// matches a derivation currently stored.
|
|
Future<void> addDerivation({
|
|
required int chain,
|
|
required String address,
|
|
required String pubKey,
|
|
required String wif,
|
|
required DerivePathType derivePathType,
|
|
}) async {
|
|
// build lookup key
|
|
final key = _buildDerivationStorageKey(
|
|
chain: chain, derivePathType: derivePathType);
|
|
|
|
// fetch current derivations
|
|
final derivationsString = await _secureStore.read(key: key);
|
|
final derivations =
|
|
Map<String, dynamic>.from(jsonDecode(derivationsString ?? "{}") as Map);
|
|
|
|
// add derivation
|
|
derivations[address] = {
|
|
"pubKey": pubKey,
|
|
"wif": wif,
|
|
};
|
|
|
|
// save derivations
|
|
final newReceiveDerivationsString = jsonEncode(derivations);
|
|
await _secureStore.write(key: key, value: newReceiveDerivationsString);
|
|
}
|
|
|
|
/// Add multiple derivations to the local secure storage for [chain] and
|
|
/// [derivePathType] where [chain] must either be 1 for change or 0 for receive.
|
|
/// This will overwrite any previous entries where the address of the new derivation
|
|
/// matches a derivation currently stored.
|
|
/// The [derivationsToAdd] must be in the format of:
|
|
/// {
|
|
/// addressA : {
|
|
/// "pubKey": <the pubKey string>,
|
|
/// "wif": <the wif string>,
|
|
/// },
|
|
/// addressB : {
|
|
/// "pubKey": <the pubKey string>,
|
|
/// "wif": <the wif string>,
|
|
/// },
|
|
/// }
|
|
Future<void> addDerivations({
|
|
required int chain,
|
|
required DerivePathType derivePathType,
|
|
required Map<String, dynamic> derivationsToAdd,
|
|
}) async {
|
|
// build lookup key
|
|
final key = _buildDerivationStorageKey(
|
|
chain: chain, derivePathType: derivePathType);
|
|
|
|
// fetch current derivations
|
|
final derivationsString = await _secureStore.read(key: key);
|
|
final derivations =
|
|
Map<String, dynamic>.from(jsonDecode(derivationsString ?? "{}") as Map);
|
|
|
|
// add derivation
|
|
derivations.addAll(derivationsToAdd);
|
|
|
|
// save derivations
|
|
final newReceiveDerivationsString = jsonEncode(derivations);
|
|
await _secureStore.write(key: key, value: newReceiveDerivationsString);
|
|
}
|
|
|
|
Future<List<Map<String, dynamic>>> fastFetch(List<String> allTxHashes) async {
|
|
List<Map<String, dynamic>> allTransactions = [];
|
|
|
|
const futureLimit = 30;
|
|
List<Future<Map<String, dynamic>>> transactionFutures = [];
|
|
int currentFutureCount = 0;
|
|
for (final txHash in allTxHashes) {
|
|
Future<Map<String, dynamic>> transactionFuture =
|
|
cachedElectrumXClient.getTransaction(
|
|
txHash: txHash,
|
|
verbose: true,
|
|
coin: coin,
|
|
);
|
|
transactionFutures.add(transactionFuture);
|
|
currentFutureCount++;
|
|
if (currentFutureCount > futureLimit) {
|
|
currentFutureCount = 0;
|
|
await Future.wait(transactionFutures);
|
|
for (final fTx in transactionFutures) {
|
|
final tx = await fTx;
|
|
|
|
allTransactions.add(tx);
|
|
}
|
|
}
|
|
}
|
|
if (currentFutureCount != 0) {
|
|
currentFutureCount = 0;
|
|
await Future.wait(transactionFutures);
|
|
for (final fTx in transactionFutures) {
|
|
final tx = await fTx;
|
|
|
|
allTransactions.add(tx);
|
|
}
|
|
}
|
|
return allTransactions;
|
|
}
|
|
|
|
Future<UtxoData> _fetchUtxoData() async {
|
|
final List<String> allAddresses = await _fetchAllOwnAddresses();
|
|
|
|
try {
|
|
final fetchedUtxoList = <List<Map<String, dynamic>>>[];
|
|
|
|
final Map<int, Map<String, List<dynamic>>> batches = {};
|
|
const batchSizeMax = 100;
|
|
int batchNumber = 0;
|
|
for (int i = 0; i < allAddresses.length; i++) {
|
|
if (batches[batchNumber] == null) {
|
|
batches[batchNumber] = {};
|
|
}
|
|
final scripthash = _convertToScriptHash(allAddresses[i], 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 priceData =
|
|
await _priceAPI.getPricesAnd24hChange(baseCurrency: _prefs.currency);
|
|
Decimal currentPrice = priceData[coin]?.item1 ?? Decimal.zero;
|
|
final List<Map<String, dynamic>> outputArray = [];
|
|
int satoshiBalance = 0;
|
|
int satoshiBalancePending = 0;
|
|
|
|
for (int i = 0; i < fetchedUtxoList.length; i++) {
|
|
for (int j = 0; j < fetchedUtxoList[i].length; j++) {
|
|
int value = fetchedUtxoList[i][j]["value"] as int;
|
|
satoshiBalance += value;
|
|
|
|
final txn = await cachedElectrumXClient.getTransaction(
|
|
txHash: fetchedUtxoList[i][j]["tx_hash"] as String,
|
|
verbose: true,
|
|
coin: coin,
|
|
);
|
|
|
|
final Map<String, dynamic> utxo = {};
|
|
final int confirmations = txn["confirmations"] as int? ?? 0;
|
|
final bool confirmed = txn["confirmations"] == null
|
|
? false
|
|
: txn["confirmations"] as int >= MINIMUM_CONFIRMATIONS;
|
|
if (!confirmed) {
|
|
satoshiBalancePending += value;
|
|
}
|
|
|
|
utxo["txid"] = txn["txid"];
|
|
utxo["vout"] = fetchedUtxoList[i][j]["tx_pos"];
|
|
utxo["value"] = value;
|
|
|
|
utxo["status"] = <String, dynamic>{};
|
|
utxo["status"]["confirmed"] = confirmed;
|
|
utxo["status"]["confirmations"] = confirmations;
|
|
utxo["status"]["block_height"] = fetchedUtxoList[i][j]["height"];
|
|
utxo["status"]["block_hash"] = txn["blockhash"];
|
|
utxo["status"]["block_time"] = txn["blocktime"];
|
|
|
|
final fiatValue = ((Decimal.fromInt(value) * currentPrice) /
|
|
Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
.toDecimal(scaleOnInfinitePrecision: 2);
|
|
utxo["rawWorth"] = fiatValue;
|
|
utxo["fiatWorth"] = fiatValue.toString();
|
|
outputArray.add(utxo);
|
|
}
|
|
}
|
|
|
|
Decimal currencyBalanceRaw =
|
|
((Decimal.fromInt(satoshiBalance) * currentPrice) /
|
|
Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
.toDecimal(scaleOnInfinitePrecision: 2);
|
|
|
|
final Map<String, dynamic> result = {
|
|
"total_user_currency": currencyBalanceRaw.toString(),
|
|
"total_sats": satoshiBalance,
|
|
"total_btc": (Decimal.fromInt(satoshiBalance) /
|
|
Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
.toDecimal(
|
|
scaleOnInfinitePrecision: Constants.decimalPlacesForCoin(coin))
|
|
.toString(),
|
|
"outputArray": outputArray,
|
|
"unconfirmed": satoshiBalancePending,
|
|
};
|
|
|
|
final dataModel = UtxoData.fromJson(result);
|
|
|
|
final List<UtxoObject> allOutputs = dataModel.unspentOutputArray;
|
|
Logging.instance
|
|
.log('Outputs fetched: $allOutputs', level: LogLevel.Info);
|
|
await _sortOutputs(allOutputs);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId, key: 'latest_utxo_model', value: dataModel);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'totalBalance',
|
|
value: dataModel.satoshiBalance);
|
|
return dataModel;
|
|
} catch (e, s) {
|
|
Logging.instance
|
|
.log("Output fetch unsuccessful: $e\n$s", level: LogLevel.Error);
|
|
final latestTxModel =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'latest_utxo_model');
|
|
|
|
if (latestTxModel == null) {
|
|
final emptyModel = {
|
|
"total_user_currency": "0.00",
|
|
"total_sats": 0,
|
|
"total_btc": "0",
|
|
"outputArray": <dynamic>[]
|
|
};
|
|
return UtxoData.fromJson(emptyModel);
|
|
} else {
|
|
Logging.instance
|
|
.log("Old output model located", level: LogLevel.Warning);
|
|
return latestTxModel as models.UtxoData;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Takes in a list of UtxoObjects and adds a name (dependent on object index within list)
|
|
/// and checks for the txid associated with the utxo being blocked and marks it accordingly.
|
|
/// Now also checks for output labeling.
|
|
Future<void> _sortOutputs(List<UtxoObject> utxos) async {
|
|
final blockedHashArray =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'blocked_tx_hashes')
|
|
as List<dynamic>?;
|
|
final List<String> lst = [];
|
|
if (blockedHashArray != null) {
|
|
for (var hash in blockedHashArray) {
|
|
lst.add(hash as String);
|
|
}
|
|
}
|
|
final labels =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'labels') as Map? ??
|
|
{};
|
|
|
|
outputsList = [];
|
|
|
|
for (var i = 0; i < utxos.length; i++) {
|
|
if (labels[utxos[i].txid] != null) {
|
|
utxos[i].txName = labels[utxos[i].txid] as String? ?? "";
|
|
} else {
|
|
utxos[i].txName = 'Output #$i';
|
|
}
|
|
|
|
if (utxos[i].status.confirmed == false) {
|
|
outputsList.add(utxos[i]);
|
|
} else {
|
|
if (lst.contains(utxos[i].txid)) {
|
|
utxos[i].blocked = true;
|
|
outputsList.add(utxos[i]);
|
|
} else if (!lst.contains(utxos[i].txid)) {
|
|
outputsList.add(utxos[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Future<int> 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<Map<String, int>> _getBatchTxCount({
|
|
required Map<String, String> addresses,
|
|
}) async {
|
|
try {
|
|
final Map<String, List<dynamic>> args = {};
|
|
for (final entry in addresses.entries) {
|
|
args[entry.key] = [_convertToScriptHash(entry.value, network)];
|
|
}
|
|
final response = await electrumXClient.getBatchHistory(args: args);
|
|
|
|
final Map<String, int> result = {};
|
|
for (final entry in response.entries) {
|
|
result[entry.key] = entry.value.length;
|
|
}
|
|
return result;
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Exception rethrown in _getBatchTxCount(address: $addresses: $e\n$s",
|
|
level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<void> _checkReceivingAddressForTransactions(
|
|
DerivePathType derivePathType) async {
|
|
try {
|
|
final String currentExternalAddr =
|
|
await getCurrentAddressForChain(0, derivePathType);
|
|
final int txCount = await getTxCount(address: currentExternalAddr);
|
|
Logging.instance.log(
|
|
'Number of txs for current receiving address $currentExternalAddr: $txCount',
|
|
level: LogLevel.Info);
|
|
|
|
if (txCount >= 1) {
|
|
// First increment the receiving index
|
|
await _incrementAddressIndexForChain(0, derivePathType);
|
|
|
|
// Check the new receiving index
|
|
String indexKey = "receivingIndex";
|
|
switch (derivePathType) {
|
|
case DerivePathType.bip44:
|
|
indexKey += "P2PKH";
|
|
break;
|
|
}
|
|
final newReceivingIndex =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: indexKey) as int;
|
|
|
|
// Use new index to derive a new receiving address
|
|
final newReceivingAddress = await _generateAddressForChain(
|
|
0, newReceivingIndex, derivePathType);
|
|
|
|
// Add that new receiving address to the array of receiving addresses
|
|
await _addToAddressesArrayForChain(
|
|
newReceivingAddress, 0, derivePathType);
|
|
|
|
// Set the new receiving address that the service
|
|
|
|
switch (derivePathType) {
|
|
case DerivePathType.bip44:
|
|
_currentReceivingAddressP2PKH = Future(() => newReceivingAddress);
|
|
break;
|
|
}
|
|
}
|
|
} on SocketException catch (se, s) {
|
|
Logging.instance.log(
|
|
"SocketException caught in _checkReceivingAddressForTransactions($derivePathType): $se\n$s",
|
|
level: LogLevel.Error);
|
|
return;
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Exception rethrown from _checkReceivingAddressForTransactions($derivePathType): $e\n$s",
|
|
level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<void> checkChangeAddressForTransactions(
|
|
DerivePathType derivePathType) async {
|
|
try {
|
|
final String currentExternalAddr =
|
|
await getCurrentAddressForChain(1, derivePathType);
|
|
final int txCount = await getTxCount(address: currentExternalAddr);
|
|
Logging.instance.log(
|
|
'Number of txs for current change address $currentExternalAddr: $txCount',
|
|
level: LogLevel.Info);
|
|
|
|
if (txCount >= 1) {
|
|
// First increment the change index
|
|
await _incrementAddressIndexForChain(1, derivePathType);
|
|
|
|
// Check the new change index
|
|
String indexKey = "changeIndex";
|
|
switch (derivePathType) {
|
|
case DerivePathType.bip44:
|
|
indexKey += "P2PKH";
|
|
break;
|
|
}
|
|
final newChangeIndex =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: indexKey) as int;
|
|
|
|
// Use new index to derive a new change address
|
|
final newChangeAddress =
|
|
await _generateAddressForChain(1, newChangeIndex, derivePathType);
|
|
|
|
// Add that new receiving address to the array of change addresses
|
|
await _addToAddressesArrayForChain(newChangeAddress, 1, derivePathType);
|
|
}
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Exception rethrown from _checkChangeAddressForTransactions($derivePathType): $e\n$s",
|
|
level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<void> _checkCurrentReceivingAddressesForTransactions() async {
|
|
try {
|
|
for (final type in DerivePathType.values) {
|
|
await _checkReceivingAddressForTransactions(type);
|
|
}
|
|
} 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<void> checkCurrentReceivingAddressesForTransactions() async {
|
|
if (Platform.environment["FLUTTER_TEST"] == "true") {
|
|
try {
|
|
return _checkCurrentReceivingAddressesForTransactions();
|
|
} catch (_) {
|
|
rethrow;
|
|
}
|
|
}
|
|
}
|
|
|
|
Future<void> _checkCurrentChangeAddressesForTransactions() async {
|
|
try {
|
|
for (final type in DerivePathType.values) {
|
|
await checkChangeAddressForTransactions(type);
|
|
}
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Exception rethrown from _checkCurrentChangeAddressesForTransactions(): $e\n$s",
|
|
level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
/// public wrapper because dart can't test private...
|
|
Future<void> checkCurrentChangeAddressesForTransactions() async {
|
|
if (Platform.environment["FLUTTER_TEST"] == "true") {
|
|
try {
|
|
return _checkCurrentChangeAddressesForTransactions();
|
|
} catch (_) {
|
|
rethrow;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// attempts to convert a string to a valid scripthash
|
|
///
|
|
/// Returns the scripthash or throws an exception on invalid dogecoin address
|
|
String _convertToScriptHash(String dogecoinAddress, NetworkType network) {
|
|
try {
|
|
final output = Address.addressToOutputScript(dogecoinAddress, network);
|
|
final hash = sha256.convert(output.toList(growable: false)).toString();
|
|
|
|
final chars = hash.split("");
|
|
final reversedPairs = <String>[];
|
|
var i = chars.length - 1;
|
|
while (i > 0) {
|
|
reversedPairs.add(chars[i - 1]);
|
|
reversedPairs.add(chars[i]);
|
|
i -= 2;
|
|
}
|
|
return reversedPairs.join("");
|
|
} catch (e) {
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<List<Map<String, dynamic>>> _fetchHistory(
|
|
List<String> allAddresses) async {
|
|
try {
|
|
List<Map<String, dynamic>> allTxHashes = [];
|
|
|
|
final Map<int, Map<String, List<dynamic>>> batches = {};
|
|
final Map<String, String> requestIdToAddressMap = {};
|
|
const batchSizeMax = 100;
|
|
int batchNumber = 0;
|
|
for (int i = 0; i < allAddresses.length; i++) {
|
|
if (batches[batchNumber] == null) {
|
|
batches[batchNumber] = {};
|
|
}
|
|
final scripthash = _convertToScriptHash(allAddresses[i], network);
|
|
final id = Logger.isTestEnv ? "$i" : const Uuid().v1();
|
|
requestIdToAddressMap[id] = allAddresses[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<Map<String, dynamic>> allTransactions, String txid) {
|
|
for (int i = 0; i < allTransactions.length; i++) {
|
|
if (allTransactions[i]["txid"] == txid) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Future<TransactionData> _fetchTransactionData() async {
|
|
final List<String> allAddresses = await _fetchAllOwnAddresses();
|
|
|
|
final changeAddressesP2PKH =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'changeAddressesP2PKH')
|
|
as List<dynamic>;
|
|
|
|
final List<Map<String, dynamic>> allTxHashes =
|
|
await _fetchHistory(allAddresses);
|
|
|
|
final cachedTransactions =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'latest_tx_model')
|
|
as TransactionData?;
|
|
int latestTxnBlockHeight =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: "storedTxnDataHeight")
|
|
as int? ??
|
|
0;
|
|
|
|
final unconfirmedCachedTransactions =
|
|
cachedTransactions?.getAllTransactions() ?? {};
|
|
unconfirmedCachedTransactions
|
|
.removeWhere((key, value) => value.confirmedStatus);
|
|
|
|
if (cachedTransactions != null) {
|
|
for (final tx in allTxHashes.toList(growable: false)) {
|
|
final txHeight = tx["height"] as int;
|
|
if (txHeight > 0 &&
|
|
txHeight < latestTxnBlockHeight - MINIMUM_CONFIRMATIONS) {
|
|
if (unconfirmedCachedTransactions[tx["tx_hash"] as String] == null) {
|
|
allTxHashes.remove(tx);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
List<String> hashes = [];
|
|
for (var element in allTxHashes) {
|
|
hashes.add(element['tx_hash'] as String);
|
|
}
|
|
await fastFetch(hashes);
|
|
List<Map<String, dynamic>> allTransactions = [];
|
|
|
|
for (final txHash in allTxHashes) {
|
|
final tx = await cachedElectrumXClient.getTransaction(
|
|
txHash: txHash["tx_hash"] as String,
|
|
verbose: true,
|
|
coin: coin,
|
|
);
|
|
|
|
// Logging.instance.log("TRANSACTION: ${jsonEncode(tx)}");
|
|
// TODO fix this for sent to self transactions?
|
|
if (!_duplicateTxCheck(allTransactions, tx["txid"] as String)) {
|
|
tx["address"] = txHash["address"];
|
|
tx["height"] = txHash["height"];
|
|
allTransactions.add(tx);
|
|
}
|
|
}
|
|
|
|
Logging.instance.log("addAddresses: $allAddresses", level: LogLevel.Info);
|
|
Logging.instance.log("allTxHashes: $allTxHashes", level: LogLevel.Info);
|
|
|
|
Logging.instance.log("allTransactions length: ${allTransactions.length}",
|
|
level: LogLevel.Info);
|
|
|
|
final priceData =
|
|
await _priceAPI.getPricesAnd24hChange(baseCurrency: _prefs.currency);
|
|
Decimal currentPrice = priceData[coin]?.item1 ?? Decimal.zero;
|
|
final List<Map<String, dynamic>> midSortedArray = [];
|
|
|
|
Set<String> vHashes = {};
|
|
for (final txObject in allTransactions) {
|
|
for (int i = 0; i < (txObject["vin"] as List).length; i++) {
|
|
final input = txObject["vin"]![i] as Map;
|
|
final prevTxid = input["txid"] as String;
|
|
vHashes.add(prevTxid);
|
|
}
|
|
}
|
|
await fastFetch(vHashes.toList());
|
|
|
|
for (final txObject in allTransactions) {
|
|
// List<String> sendersArray = [];
|
|
// List<String> recipientsArray = [];
|
|
//
|
|
// // Usually only has value when txType = 'Send'
|
|
// int inputAmtSentFromWallet = 0;
|
|
// // Usually has value regardless of txType due to change addresses
|
|
// int outputAmtAddressedToWallet = 0;
|
|
// int fee = 0;
|
|
//
|
|
// Map<String, dynamic> midSortedTx = {};
|
|
//
|
|
// for (int i = 0; i < (txObject["vin"] as List).length; i++) {
|
|
// final input = txObject["vin"][i] as Map;
|
|
// final prevTxid = input["txid"] as String;
|
|
// final prevOut = input["vout"] as int;
|
|
//
|
|
// final tx = await _cachedElectrumXClient.getTransaction(
|
|
// txHash: prevTxid, coin: coin);
|
|
//
|
|
// for (final out in tx["vout"] as List) {
|
|
// if (prevOut == out["n"]) {
|
|
// final address = out["scriptPubKey"]["addresses"][0] as String?;
|
|
// if (address != null) {
|
|
// sendersArray.add(address);
|
|
// }
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// Logging.instance.log("sendersArray: $sendersArray", level: LogLevel.Info);
|
|
//
|
|
// for (final output in txObject["vout"] as List) {
|
|
// final address = output["scriptPubKey"]["addresses"][0] as String?;
|
|
// if (address != null) {
|
|
// recipientsArray.add(address);
|
|
// }
|
|
// }
|
|
//
|
|
// Logging.instance
|
|
// .log("recipientsArray: $recipientsArray", level: LogLevel.Info);
|
|
//
|
|
// final foundInSenders =
|
|
// allAddresses.any((element) => sendersArray.contains(element));
|
|
// Logging.instance
|
|
// .log("foundInSenders: $foundInSenders", level: LogLevel.Info);
|
|
//
|
|
// // If txType = Sent, then calculate inputAmtSentFromWallet
|
|
// if (foundInSenders) {
|
|
// int totalInput = 0;
|
|
// for (int i = 0; i < (txObject["vin"] as List).length; i++) {
|
|
// final input = txObject["vin"][i] as Map;
|
|
// final prevTxid = input["txid"] as String;
|
|
// final prevOut = input["vout"] as int;
|
|
// final tx = await _cachedElectrumXClient.getTransaction(
|
|
// txHash: prevTxid,
|
|
// coin: coin,
|
|
// );
|
|
//
|
|
// for (final out in tx["vout"] as List) {
|
|
// if (prevOut == out["n"]) {
|
|
// inputAmtSentFromWallet +=
|
|
// (Decimal.parse(out["value"].toString()) *
|
|
// Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
// .toBigInt()
|
|
// .toInt();
|
|
// }
|
|
// }
|
|
// }
|
|
// totalInput = inputAmtSentFromWallet;
|
|
// int totalOutput = 0;
|
|
//
|
|
// for (final output in txObject["vout"] as List) {
|
|
// final address = output["scriptPubKey"]["addresses"][0];
|
|
// final value = output["value"];
|
|
// final _value = (Decimal.parse(value.toString()) *
|
|
// Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
// .toBigInt()
|
|
// .toInt();
|
|
// totalOutput += _value;
|
|
// if (changeAddressesP2PKH.contains(address)) {
|
|
// inputAmtSentFromWallet -= _value;
|
|
// } else {
|
|
// // change address from 'sent from' to the 'sent to' address
|
|
// txObject["address"] = address;
|
|
// }
|
|
// }
|
|
// // calculate transaction fee
|
|
// fee = totalInput - totalOutput;
|
|
// // subtract fee from sent to calculate correct value of sent tx
|
|
// inputAmtSentFromWallet -= fee;
|
|
// } else {
|
|
// // counters for fee calculation
|
|
// int totalOut = 0;
|
|
// int totalIn = 0;
|
|
//
|
|
// // add up received tx value
|
|
// for (final output in txObject["vout"] as List) {
|
|
// final address = output["scriptPubKey"]["addresses"][0];
|
|
// if (address != null) {
|
|
// final value = (Decimal.parse(output["value"].toString()) *
|
|
// Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
// .toBigInt()
|
|
// .toInt();
|
|
// totalOut += value;
|
|
// if (allAddresses.contains(address)) {
|
|
// outputAmtAddressedToWallet += value;
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// // calculate fee for received tx
|
|
// for (int i = 0; i < (txObject["vin"] as List).length; i++) {
|
|
// final input = txObject["vin"][i] as Map;
|
|
// final prevTxid = input["txid"] as String;
|
|
// final prevOut = input["vout"] as int;
|
|
// final tx = await _cachedElectrumXClient.getTransaction(
|
|
// txHash: prevTxid,
|
|
// coin: coin,
|
|
// );
|
|
//
|
|
// for (final out in tx["vout"] as List) {
|
|
// if (prevOut == out["n"]) {
|
|
// totalIn += (Decimal.parse(out["value"].toString()) *
|
|
// Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
// .toBigInt()
|
|
// .toInt();
|
|
// }
|
|
// }
|
|
// }
|
|
// fee = totalIn - totalOut;
|
|
// }
|
|
//
|
|
// // create final tx map
|
|
// midSortedTx["txid"] = txObject["txid"];
|
|
// midSortedTx["confirmed_status"] = (txObject["confirmations"] != null) &&
|
|
// (txObject["confirmations"] as int >= MINIMUM_CONFIRMATIONS);
|
|
// midSortedTx["confirmations"] = txObject["confirmations"] ?? 0;
|
|
// midSortedTx["timestamp"] = txObject["blocktime"] ??
|
|
// (DateTime.now().millisecondsSinceEpoch ~/ 1000);
|
|
//
|
|
// if (foundInSenders) {
|
|
// midSortedTx["txType"] = "Sent";
|
|
// midSortedTx["amount"] = inputAmtSentFromWallet;
|
|
// final String worthNow =
|
|
// ((currentPrice * Decimal.fromInt(inputAmtSentFromWallet)) /
|
|
// Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
// .toDecimal(scaleOnInfinitePrecision: 2)
|
|
// .toStringAsFixed(2);
|
|
// midSortedTx["worthNow"] = worthNow;
|
|
// midSortedTx["worthAtBlockTimestamp"] = worthNow;
|
|
// } else {
|
|
// midSortedTx["txType"] = "Received";
|
|
// midSortedTx["amount"] = outputAmtAddressedToWallet;
|
|
// final worthNow =
|
|
// ((currentPrice * Decimal.fromInt(outputAmtAddressedToWallet)) /
|
|
// Decimal.fromInt(Constants.satsPerCoin(coin)))
|
|
// .toDecimal(scaleOnInfinitePrecision: 2)
|
|
// .toStringAsFixed(2);
|
|
// midSortedTx["worthNow"] = worthNow;
|
|
// }
|
|
// midSortedTx["aliens"] = <dynamic>[];
|
|
// midSortedTx["fees"] = fee;
|
|
// midSortedTx["address"] = txObject["address"];
|
|
// midSortedTx["inputSize"] = txObject["vin"].length;
|
|
// midSortedTx["outputSize"] = txObject["vout"].length;
|
|
// midSortedTx["inputs"] = txObject["vin"];
|
|
// midSortedTx["outputs"] = txObject["vout"];
|
|
//
|
|
// final int height = txObject["height"] as int;
|
|
// midSortedTx["height"] = height;
|
|
//
|
|
// if (height >= latestTxnBlockHeight) {
|
|
// latestTxnBlockHeight = height;
|
|
// }
|
|
|
|
final midSortedTx = await parseTransaction(
|
|
txObject,
|
|
cachedElectrumXClient,
|
|
allAddresses.toSet(),
|
|
(changeAddressesP2PKH as List<String>).toSet(),
|
|
coin,
|
|
MINIMUM_CONFIRMATIONS,
|
|
currentPrice,
|
|
);
|
|
|
|
midSortedArray.add(midSortedTx);
|
|
}
|
|
|
|
// sort by date ---- //TODO not sure if needed
|
|
// shouldn't be any issues with a null timestamp but I got one at some point?
|
|
midSortedArray
|
|
.sort((a, b) => (b["timestamp"] as int) - (a["timestamp"] as int));
|
|
// {
|
|
// final aT = a["timestamp"];
|
|
// final bT = b["timestamp"];
|
|
//
|
|
// if (aT == null && bT == null) {
|
|
// return 0;
|
|
// } else if (aT == null) {
|
|
// return -1;
|
|
// } else if (bT == null) {
|
|
// return 1;
|
|
// } else {
|
|
// return bT - aT;
|
|
// }
|
|
// });
|
|
|
|
// buildDateTimeChunks
|
|
final Map<String, dynamic> result = {"dateTimeChunks": <dynamic>[]};
|
|
final dateArray = <dynamic>[];
|
|
|
|
for (int i = 0; i < midSortedArray.length; i++) {
|
|
final txObject = midSortedArray[i];
|
|
final date = extractDateFromTimestamp(txObject["timestamp"] as int);
|
|
final txTimeArray = [txObject["timestamp"], date];
|
|
|
|
if (dateArray.contains(txTimeArray[1])) {
|
|
result["dateTimeChunks"].forEach((dynamic chunk) {
|
|
if (extractDateFromTimestamp(chunk["timestamp"] as int) ==
|
|
txTimeArray[1]) {
|
|
if (chunk["transactions"] == null) {
|
|
chunk["transactions"] = <Map<String, dynamic>>[];
|
|
}
|
|
chunk["transactions"].add(txObject);
|
|
}
|
|
});
|
|
} else {
|
|
dateArray.add(txTimeArray[1]);
|
|
final chunk = {
|
|
"timestamp": txTimeArray[0],
|
|
"transactions": [txObject],
|
|
};
|
|
result["dateTimeChunks"].add(chunk);
|
|
}
|
|
}
|
|
|
|
final transactionsMap = cachedTransactions?.getAllTransactions() ?? {};
|
|
transactionsMap
|
|
.addAll(TransactionData.fromJson(result).getAllTransactions());
|
|
|
|
final txModel = TransactionData.fromMap(transactionsMap);
|
|
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'storedTxnDataHeight',
|
|
value: latestTxnBlockHeight);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId, key: 'latest_tx_model', value: txModel);
|
|
|
|
cachedTxData = txModel;
|
|
return txModel;
|
|
}
|
|
|
|
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(int satoshiAmountToSend, int selectedTxFeeRate,
|
|
String _recipientAddress, bool isSendAll,
|
|
{int additionalOutputs = 0, List<UtxoObject>? utxos}) async {
|
|
Logging.instance
|
|
.log("Starting coinSelection ----------", level: LogLevel.Info);
|
|
final List<UtxoObject> availableOutputs = utxos ?? outputsList;
|
|
final List<UtxoObject> spendableOutputs = [];
|
|
int spendableSatoshiValue = 0;
|
|
|
|
// Build list of spendable outputs and totaling their satoshi amount
|
|
for (var i = 0; i < availableOutputs.length; i++) {
|
|
if (availableOutputs[i].blocked == false &&
|
|
availableOutputs[i].status.confirmed == true) {
|
|
spendableOutputs.add(availableOutputs[i]);
|
|
spendableSatoshiValue += availableOutputs[i].value;
|
|
}
|
|
}
|
|
|
|
// sort spendable by age (oldest first)
|
|
spendableOutputs.sort(
|
|
(a, b) => b.status.confirmations.compareTo(a.status.confirmations));
|
|
|
|
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<UtxoObject> utxoObjectsToUse = [];
|
|
|
|
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;
|
|
}
|
|
|
|
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<String> recipientsArray = [_recipientAddress];
|
|
List<int> 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 = estimateTxFee(
|
|
vSize: vSizeForOneOutput,
|
|
feeRatePerKB: selectedTxFeeRate,
|
|
);
|
|
if (feeForOneOutput < (vSizeForOneOutput + 1) * 1000) {
|
|
feeForOneOutput = (vSizeForOneOutput + 1) * 1000;
|
|
}
|
|
|
|
final int amount = satoshiAmountToSend - feeForOneOutput;
|
|
dynamic txn = await buildTransaction(
|
|
utxosToUse: utxoObjectsToUse,
|
|
utxoSigningData: utxoSigningData,
|
|
recipients: recipientsArray,
|
|
satoshiAmounts: [amount],
|
|
);
|
|
Map<String, dynamic> transactionObject = {
|
|
"hex": txn["hex"],
|
|
"recipient": recipientsArray[0],
|
|
"recipientAmt": amount,
|
|
"fee": feeForOneOutput,
|
|
"vSize": txn["vSize"],
|
|
};
|
|
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, DerivePathType.bip44),
|
|
],
|
|
satoshiAmounts: [
|
|
satoshiAmountToSend,
|
|
satoshisBeingUsed - satoshiAmountToSend - 1,
|
|
], // dust limit is the minimum amount a change output should be
|
|
))["vSize"] as int;
|
|
//todo: check if print needed
|
|
debugPrint("vSizeForOneOutput $vSizeForOneOutput");
|
|
debugPrint("vSizeForTwoOutPuts $vSizeForTwoOutPuts");
|
|
|
|
// Assume 1 output, only for recipient and no change
|
|
var feeForOneOutput = estimateTxFee(
|
|
vSize: vSizeForOneOutput,
|
|
feeRatePerKB: selectedTxFeeRate,
|
|
);
|
|
// Assume 2 outputs, one for recipient and one for change
|
|
var feeForTwoOutputs = 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) * 1000) {
|
|
feeForOneOutput = (vSizeForOneOutput + 1) * 1000;
|
|
}
|
|
if (feeForTwoOutputs < ((vSizeForTwoOutPuts + 1) * 1000)) {
|
|
feeForTwoOutputs = ((vSizeForTwoOutPuts + 1) * 1000);
|
|
}
|
|
|
|
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) {
|
|
// 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 &&
|
|
satoshisBeingUsed - satoshiAmountToSend - changeOutputSize ==
|
|
feeForTwoOutputs) {
|
|
// generate new change address if current change address has been used
|
|
await checkChangeAddressForTransactions(DerivePathType.bip44);
|
|
final String newChangeAddress =
|
|
await getCurrentAddressForChain(1, DerivePathType.bip44);
|
|
|
|
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<String, dynamic> transactionObject = {
|
|
"hex": txn["hex"],
|
|
"recipient": recipientsArray[0],
|
|
"recipientAmt": recipientsAmtArray[0],
|
|
"fee": feeBeingPaid,
|
|
"vSize": txn["vSize"],
|
|
};
|
|
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<String, dynamic> transactionObject = {
|
|
"hex": txn["hex"],
|
|
"recipient": recipientsArray[0],
|
|
"recipientAmt": recipientsAmtArray[0],
|
|
"fee": satoshisBeingUsed - satoshiAmountToSend,
|
|
"vSize": txn["vSize"],
|
|
};
|
|
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<String, dynamic> transactionObject = {
|
|
"hex": txn["hex"],
|
|
"recipient": recipientsArray[0],
|
|
"recipientAmt": recipientsAmtArray[0],
|
|
"fee": satoshisBeingUsed - satoshiAmountToSend,
|
|
"vSize": txn["vSize"],
|
|
};
|
|
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<String, dynamic> transactionObject = {
|
|
"hex": txn["hex"],
|
|
"recipient": recipientsArray[0],
|
|
"recipientAmt": recipientsAmtArray[0],
|
|
"fee": feeForOneOutput,
|
|
"vSize": txn["vSize"],
|
|
};
|
|
return transactionObject;
|
|
} else {
|
|
// Remember that returning 2 iTndicates 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, selectedTxFeeRate,
|
|
_recipientAddress, isSendAll,
|
|
additionalOutputs: additionalOutputs + 1, utxos: utxos);
|
|
}
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
Future<Map<String, dynamic>> fetchBuildTxData(
|
|
List<UtxoObject> utxosToUse,
|
|
) async {
|
|
// return data
|
|
Map<String, dynamic> results = {};
|
|
Map<String, List<String>> addressTxid = {};
|
|
|
|
// addresses to check
|
|
List<String> addressesP2PKH = [];
|
|
|
|
try {
|
|
// Populating the addresses to check
|
|
for (var i = 0; i < utxosToUse.length; i++) {
|
|
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) {
|
|
final address = output["scriptPubKey"]["addresses"][0] as String;
|
|
if (!addressTxid.containsKey(address)) {
|
|
addressTxid[address] = <String>[];
|
|
}
|
|
(addressTxid[address] as List).add(txid);
|
|
switch (addressType(address: address)) {
|
|
case DerivePathType.bip44:
|
|
addressesP2PKH.add(address);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// p2pkh / bip44
|
|
final p2pkhLength = addressesP2PKH.length;
|
|
if (p2pkhLength > 0) {
|
|
final receiveDerivations = await _fetchDerivations(
|
|
chain: 0,
|
|
derivePathType: DerivePathType.bip44,
|
|
);
|
|
final changeDerivations = await _fetchDerivations(
|
|
chain: 1,
|
|
derivePathType: DerivePathType.bip44,
|
|
);
|
|
for (int i = 0; i < p2pkhLength; i++) {
|
|
// receives
|
|
final receiveDerivation = receiveDerivations[addressesP2PKH[i]];
|
|
// if a match exists it will not be null
|
|
if (receiveDerivation != null) {
|
|
final data = P2PKH(
|
|
data: PaymentData(
|
|
pubkey: Format.stringToUint8List(
|
|
receiveDerivation["pubKey"] as String)),
|
|
network: network,
|
|
).data;
|
|
|
|
for (String tx in addressTxid[addressesP2PKH[i]]!) {
|
|
results[tx] = {
|
|
"output": data.output,
|
|
"keyPair": ECPair.fromWIF(
|
|
receiveDerivation["wif"] as String,
|
|
network: network,
|
|
),
|
|
};
|
|
}
|
|
} else {
|
|
// if its not a receive, check change
|
|
final changeDerivation = changeDerivations[addressesP2PKH[i]];
|
|
// if a match exists it will not be null
|
|
if (changeDerivation != null) {
|
|
final data = P2PKH(
|
|
data: PaymentData(
|
|
pubkey: Format.stringToUint8List(
|
|
changeDerivation["pubKey"] as String)),
|
|
network: network,
|
|
).data;
|
|
|
|
for (String tx in addressTxid[addressesP2PKH[i]]!) {
|
|
results[tx] = {
|
|
"output": data.output,
|
|
"keyPair": ECPair.fromWIF(
|
|
changeDerivation["wif"] as String,
|
|
network: network,
|
|
),
|
|
};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return results;
|
|
} catch (e, s) {
|
|
Logging.instance
|
|
.log("fetchBuildTxData() threw: $e,\n$s", level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
/// Builds and signs a transaction
|
|
Future<Map<String, dynamic>> buildTransaction({
|
|
required List<UtxoObject> utxosToUse,
|
|
required Map<String, dynamic> utxoSigningData,
|
|
required List<String> recipients,
|
|
required List<int> satoshiAmounts,
|
|
}) async {
|
|
Logging.instance
|
|
.log("Starting buildTransaction ----------", level: LogLevel.Info);
|
|
|
|
final txb = TransactionBuilder(network: network);
|
|
txb.setVersion(1);
|
|
|
|
// Add transaction inputs
|
|
for (var i = 0; i < utxosToUse.length; i++) {
|
|
final txid = utxosToUse[i].txid;
|
|
txb.addInput(txid, utxosToUse[i].vout, null,
|
|
utxoSigningData[txid]["output"] as Uint8List);
|
|
}
|
|
|
|
// Add transaction output
|
|
for (var i = 0; i < recipients.length; i++) {
|
|
txb.addOutput(recipients[i], satoshiAmounts[i]);
|
|
}
|
|
|
|
try {
|
|
// Sign the transaction accordingly
|
|
for (var i = 0; i < utxosToUse.length; i++) {
|
|
final txid = utxosToUse[i].txid;
|
|
txb.sign(
|
|
vin: i,
|
|
keyPair: utxoSigningData[txid]["keyPair"] as ECPair,
|
|
witnessValue: utxosToUse[i].value,
|
|
redeemScript: utxoSigningData[txid]["redeemScript"] as Uint8List?,
|
|
);
|
|
}
|
|
} catch (e, s) {
|
|
Logging.instance.log("Caught exception while signing transaction: $e\n$s",
|
|
level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
|
|
final builtTx = txb.build();
|
|
final vSize = builtTx.virtualSize();
|
|
|
|
return {"hex": builtTx.toHex(), "vSize": vSize};
|
|
}
|
|
|
|
@override
|
|
Future<void> 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);
|
|
|
|
// back up data
|
|
await _rescanBackup();
|
|
|
|
try {
|
|
final mnemonic = await _secureStore.read(key: '${_walletId}_mnemonic');
|
|
await _recoverWalletFromBIP32SeedPhrase(
|
|
mnemonic: mnemonic!,
|
|
maxUnusedAddressGap: maxUnusedAddressGap,
|
|
maxNumberOfIndexesToCheck: maxNumberOfIndexesToCheck,
|
|
);
|
|
|
|
longMutex = false;
|
|
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,
|
|
),
|
|
);
|
|
|
|
// restore from backup
|
|
await _rescanRestore();
|
|
|
|
longMutex = false;
|
|
Logging.instance.log("Exception rethrown from fullRescan(): $e\n$s",
|
|
level: LogLevel.Error);
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<void> _rescanRestore() async {
|
|
Logging.instance.log("starting rescan restore", level: LogLevel.Info);
|
|
|
|
// restore from backup
|
|
// p2pkh
|
|
final tempReceivingAddressesP2PKH = DB.instance
|
|
.get<dynamic>(boxName: walletId, key: 'receivingAddressesP2PKH_BACKUP');
|
|
final tempChangeAddressesP2PKH = DB.instance
|
|
.get<dynamic>(boxName: walletId, key: 'changeAddressesP2PKH_BACKUP');
|
|
final tempReceivingIndexP2PKH = DB.instance
|
|
.get<dynamic>(boxName: walletId, key: 'receivingIndexP2PKH_BACKUP');
|
|
final tempChangeIndexP2PKH = DB.instance
|
|
.get<dynamic>(boxName: walletId, key: 'changeIndexP2PKH_BACKUP');
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'receivingAddressesP2PKH',
|
|
value: tempReceivingAddressesP2PKH);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'changeAddressesP2PKH',
|
|
value: tempChangeAddressesP2PKH);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'receivingIndexP2PKH',
|
|
value: tempReceivingIndexP2PKH);
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'changeIndexP2PKH',
|
|
value: tempChangeIndexP2PKH);
|
|
await DB.instance.delete<dynamic>(
|
|
key: 'receivingAddressesP2PKH_BACKUP', boxName: walletId);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'changeAddressesP2PKH_BACKUP', boxName: walletId);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'receivingIndexP2PKH_BACKUP', boxName: walletId);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'changeIndexP2PKH_BACKUP', boxName: walletId);
|
|
|
|
// P2PKH derivations
|
|
final p2pkhReceiveDerivationsString = await _secureStore.read(
|
|
key: "${walletId}_receiveDerivationsP2PKH_BACKUP");
|
|
final p2pkhChangeDerivationsString = await _secureStore.read(
|
|
key: "${walletId}_changeDerivationsP2PKH_BACKUP");
|
|
|
|
await _secureStore.write(
|
|
key: "${walletId}_receiveDerivationsP2PKH",
|
|
value: p2pkhReceiveDerivationsString);
|
|
await _secureStore.write(
|
|
key: "${walletId}_changeDerivationsP2PKH",
|
|
value: p2pkhChangeDerivationsString);
|
|
|
|
await _secureStore.delete(
|
|
key: "${walletId}_receiveDerivationsP2PKH_BACKUP");
|
|
await _secureStore.delete(key: "${walletId}_changeDerivationsP2PKH_BACKUP");
|
|
|
|
// UTXOs
|
|
final utxoData = DB.instance
|
|
.get<dynamic>(boxName: walletId, key: 'latest_utxo_model_BACKUP');
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId, key: 'latest_utxo_model', value: utxoData);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'latest_utxo_model_BACKUP', boxName: walletId);
|
|
|
|
Logging.instance.log("rescan restore complete", level: LogLevel.Info);
|
|
}
|
|
|
|
Future<void> _rescanBackup() async {
|
|
Logging.instance.log("starting rescan backup", level: LogLevel.Info);
|
|
|
|
// backup current and clear data
|
|
// p2pkh
|
|
final tempReceivingAddressesP2PKH = DB.instance
|
|
.get<dynamic>(boxName: walletId, key: 'receivingAddressesP2PKH');
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'receivingAddressesP2PKH_BACKUP',
|
|
value: tempReceivingAddressesP2PKH);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'receivingAddressesP2PKH', boxName: walletId);
|
|
|
|
final tempChangeAddressesP2PKH = DB.instance
|
|
.get<dynamic>(boxName: walletId, key: 'changeAddressesP2PKH');
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'changeAddressesP2PKH_BACKUP',
|
|
value: tempChangeAddressesP2PKH);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'changeAddressesP2PKH', boxName: walletId);
|
|
|
|
final tempReceivingIndexP2PKH =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'receivingIndexP2PKH');
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'receivingIndexP2PKH_BACKUP',
|
|
value: tempReceivingIndexP2PKH);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'receivingIndexP2PKH', boxName: walletId);
|
|
|
|
final tempChangeIndexP2PKH =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'changeIndexP2PKH');
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId,
|
|
key: 'changeIndexP2PKH_BACKUP',
|
|
value: tempChangeIndexP2PKH);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'changeIndexP2PKH', boxName: walletId);
|
|
|
|
// P2PKH derivations
|
|
final p2pkhReceiveDerivationsString =
|
|
await _secureStore.read(key: "${walletId}_receiveDerivationsP2PKH");
|
|
final p2pkhChangeDerivationsString =
|
|
await _secureStore.read(key: "${walletId}_changeDerivationsP2PKH");
|
|
|
|
await _secureStore.write(
|
|
key: "${walletId}_receiveDerivationsP2PKH_BACKUP",
|
|
value: p2pkhReceiveDerivationsString);
|
|
await _secureStore.write(
|
|
key: "${walletId}_changeDerivationsP2PKH_BACKUP",
|
|
value: p2pkhChangeDerivationsString);
|
|
|
|
await _secureStore.delete(key: "${walletId}_receiveDerivationsP2PKH");
|
|
await _secureStore.delete(key: "${walletId}_changeDerivationsP2PKH");
|
|
|
|
// UTXOs
|
|
final utxoData =
|
|
DB.instance.get<dynamic>(boxName: walletId, key: 'latest_utxo_model');
|
|
await DB.instance.put<dynamic>(
|
|
boxName: walletId, key: 'latest_utxo_model_BACKUP', value: utxoData);
|
|
await DB.instance
|
|
.delete<dynamic>(key: 'latest_utxo_model', boxName: walletId);
|
|
|
|
Logging.instance.log("rescan backup complete", level: LogLevel.Info);
|
|
}
|
|
|
|
@override
|
|
set isFavorite(bool markFavorite) {
|
|
DB.instance.put<dynamic>(
|
|
boxName: walletId, key: "isFavorite", value: markFavorite);
|
|
}
|
|
|
|
@override
|
|
bool get isFavorite {
|
|
try {
|
|
return DB.instance.get<dynamic>(boxName: walletId, key: "isFavorite")
|
|
as bool;
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"isFavorite fetch failed (returning false by default): $e\n$s",
|
|
level: LogLevel.Error);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
@override
|
|
bool get isRefreshing => refreshMutex;
|
|
|
|
bool isActive = false;
|
|
|
|
@override
|
|
void Function(bool)? get onIsActiveWalletChanged =>
|
|
(isActive) => this.isActive = isActive;
|
|
|
|
@override
|
|
Future<int> estimateFeeFor(int satoshiAmount, int feeRate) async {
|
|
final available =
|
|
Format.decimalAmountToSatoshis(await availableBalance, coin);
|
|
|
|
if (available == satoshiAmount) {
|
|
return satoshiAmount - sweepAllEstimate(feeRate);
|
|
} else if (satoshiAmount <= 0 || satoshiAmount > available) {
|
|
return roughFeeEstimate(1, 2, feeRate);
|
|
}
|
|
|
|
int runningBalance = 0;
|
|
int inputCount = 0;
|
|
for (final output in outputsList) {
|
|
runningBalance += output.value;
|
|
inputCount++;
|
|
if (runningBalance > satoshiAmount) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
final oneOutPutFee = roughFeeEstimate(inputCount, 1, feeRate);
|
|
final twoOutPutFee = roughFeeEstimate(inputCount, 2, feeRate);
|
|
|
|
if (runningBalance - satoshiAmount > oneOutPutFee) {
|
|
if (runningBalance - satoshiAmount > oneOutPutFee + DUST_LIMIT) {
|
|
final change = runningBalance - satoshiAmount - twoOutPutFee;
|
|
if (change > DUST_LIMIT &&
|
|
runningBalance - satoshiAmount - change == twoOutPutFee) {
|
|
return runningBalance - satoshiAmount - change;
|
|
} else {
|
|
return runningBalance - satoshiAmount;
|
|
}
|
|
} else {
|
|
return runningBalance - satoshiAmount;
|
|
}
|
|
} else if (runningBalance - satoshiAmount == oneOutPutFee) {
|
|
return oneOutPutFee;
|
|
} else {
|
|
return twoOutPutFee;
|
|
}
|
|
}
|
|
|
|
// TODO: correct formula for doge?
|
|
int roughFeeEstimate(int inputCount, int outputCount, int feeRatePerKB) {
|
|
return ((181 * inputCount) + (34 * outputCount) + 10) *
|
|
(feeRatePerKB / 1000).ceil();
|
|
}
|
|
|
|
int sweepAllEstimate(int feeRate) {
|
|
int available = 0;
|
|
int inputCount = 0;
|
|
for (final output in outputsList) {
|
|
if (output.status.confirmed) {
|
|
available += output.value;
|
|
inputCount++;
|
|
}
|
|
}
|
|
|
|
// transaction will only have 1 output minus the fee
|
|
final estimatedFee = roughFeeEstimate(inputCount, 1, feeRate);
|
|
|
|
return available - estimatedFee;
|
|
}
|
|
|
|
@override
|
|
Future<bool> generateNewAddress() async {
|
|
try {
|
|
await _incrementAddressIndexForChain(
|
|
0, DerivePathType.bip44); // First increment the receiving index
|
|
final newReceivingIndex = DB.instance.get<dynamic>(
|
|
boxName: walletId,
|
|
key: 'receivingIndexP2PKH') as int; // Check the new receiving index
|
|
final newReceivingAddress = await _generateAddressForChain(
|
|
0,
|
|
newReceivingIndex,
|
|
DerivePathType
|
|
.bip44); // Use new index to derive a new receiving address
|
|
await _addToAddressesArrayForChain(
|
|
newReceivingAddress,
|
|
0,
|
|
DerivePathType
|
|
.bip44); // Add that new receiving address to the array of receiving addresses
|
|
_currentReceivingAddressP2PKH = Future(() =>
|
|
newReceivingAddress); // Set the new receiving address that the service
|
|
|
|
return true;
|
|
} catch (e, s) {
|
|
Logging.instance.log(
|
|
"Exception rethrown from generateNewAddress(): $e\n$s",
|
|
level: LogLevel.Error);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Dogecoin Network
|
|
final dogecoin = NetworkType(
|
|
messagePrefix: '\x18Dogecoin Signed Message:\n',
|
|
bech32: 'bc',
|
|
bip32: Bip32Type(public: 0x02facafd, private: 0x02fac398),
|
|
pubKeyHash: 0x1e,
|
|
scriptHash: 0x16,
|
|
wif: 0x9e);
|
|
|
|
final dogecointestnet = NetworkType(
|
|
messagePrefix: '\x18Dogecoin Signed Message:\n',
|
|
bech32: 'tb',
|
|
bip32: Bip32Type(public: 0x043587cf, private: 0x04358394),
|
|
pubKeyHash: 0x71,
|
|
scriptHash: 0xc4,
|
|
wif: 0xf1);
|