mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-10-01 02:41:14 +00:00
809 lines
26 KiB
Dart
809 lines
26 KiB
Dart
import 'dart:convert';
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import 'dart:typed_data';
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import 'package:bitcoindart/bitcoindart.dart' as btc;
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import 'package:bitcoindart/src/utils/script.dart' as bscript;
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import 'package:flutter_libsparkmobile/flutter_libsparkmobile.dart';
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import 'package:isar/isar.dart';
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import 'package:stackwallet/models/balance.dart';
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import 'package:stackwallet/models/isar/models/blockchain_data/address.dart';
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import 'package:stackwallet/utilities/amount/amount.dart';
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import 'package:stackwallet/utilities/extensions/extensions.dart';
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import 'package:stackwallet/wallets/crypto_currency/crypto_currency.dart';
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import 'package:stackwallet/wallets/isar/models/spark_coin.dart';
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import 'package:stackwallet/wallets/models/tx_data.dart';
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import 'package:stackwallet/wallets/wallet/intermediate/bip39_hd_wallet.dart';
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import 'package:stackwallet/wallets/wallet/wallet_mixin_interfaces/electrumx_interface.dart';
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mixin SparkInterface on Bip39HDWallet, ElectrumXInterface {
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@override
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Future<void> init() async {
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Address? address = await getCurrentReceivingSparkAddress();
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if (address == null) {
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address = await generateNextSparkAddress();
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await mainDB.putAddress(address);
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} // TODO add other address types to wallet info?
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// await info.updateReceivingAddress(
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// newAddress: address.value,
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// isar: mainDB.isar,
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// );
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await super.init();
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}
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@override
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Future<List<Address>> fetchAddressesForElectrumXScan() async {
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final allAddresses = await mainDB
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.getAddresses(walletId)
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.filter()
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.not()
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.group(
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(q) => q
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.typeEqualTo(AddressType.spark)
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.or()
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.typeEqualTo(AddressType.nonWallet)
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.or()
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.subTypeEqualTo(AddressSubType.nonWallet),
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)
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.findAll();
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return allAddresses;
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}
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Future<Address?> getCurrentReceivingSparkAddress() async {
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return await mainDB.isar.addresses
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.where()
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.walletIdEqualTo(walletId)
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.filter()
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.typeEqualTo(AddressType.spark)
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.sortByDerivationIndexDesc()
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.findFirst();
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}
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Future<Address> generateNextSparkAddress() async {
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final highestStoredDiversifier =
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(await getCurrentReceivingSparkAddress())?.derivationIndex;
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// default to starting at 1 if none found
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final int diversifier = (highestStoredDiversifier ?? 0) + 1;
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// TODO: check that this stays constant and only the diversifier changes?
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const index = 1;
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final root = await getRootHDNode();
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final String derivationPath;
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if (cryptoCurrency.network == CryptoCurrencyNetwork.test) {
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derivationPath = "$kSparkBaseDerivationPathTestnet$index";
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} else {
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derivationPath = "$kSparkBaseDerivationPath$index";
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}
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final keys = root.derivePath(derivationPath);
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final String addressString = await LibSpark.getAddress(
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privateKey: keys.privateKey.data,
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index: index,
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diversifier: diversifier,
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isTestNet: cryptoCurrency.network == CryptoCurrencyNetwork.test,
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);
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return Address(
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walletId: walletId,
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value: addressString,
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publicKey: keys.publicKey.data,
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derivationIndex: diversifier,
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derivationPath: DerivationPath()..value = derivationPath,
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type: AddressType.spark,
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subType: AddressSubType.receiving,
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);
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}
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Future<Amount> estimateFeeForSpark(Amount amount) async {
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throw UnimplementedError();
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}
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/// Spark to Spark/Transparent (spend) creation
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Future<TxData> prepareSendSpark({
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required TxData txData,
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}) async {
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// todo fetch
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final List<Uint8List> serializedMintMetas = [];
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final List<LibSparkCoin> myCoins = [];
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final currentId = await electrumXClient.getSparkLatestCoinId();
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final List<Map<String, dynamic>> setMaps = [];
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// for (int i = 0; i <= currentId; i++) {
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for (int i = currentId; i <= currentId; i++) {
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final set = await electrumXCachedClient.getSparkAnonymitySet(
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groupId: i.toString(),
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coin: info.coin,
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);
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set["coinGroupID"] = i;
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setMaps.add(set);
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}
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final allAnonymitySets = setMaps
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.map((e) => (
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setId: e["coinGroupID"] as int,
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setHash: e["setHash"] as String,
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set: (e["coins"] as List)
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.map((e) => (
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serializedCoin: e[0] as String,
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txHash: e[1] as String,
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))
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.toList(),
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))
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.toList();
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// https://docs.google.com/document/d/1RG52GoYTZDvKlZz_3G4sQu-PpT6JWSZGHLNswWcrE3o/edit
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// To generate a spark spend we need to call createSparkSpendTransaction,
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// first unlock the wallet and generate all 3 spark keys,
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const index = 1;
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final root = await getRootHDNode();
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final String derivationPath;
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if (cryptoCurrency.network == CryptoCurrencyNetwork.test) {
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derivationPath = "$kSparkBaseDerivationPathTestnet$index";
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} else {
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derivationPath = "$kSparkBaseDerivationPath$index";
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}
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final privateKey = root.derivePath(derivationPath).privateKey.data;
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//
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// recipients is a list of pairs of amounts and bools, this is for transparent
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// outputs, first how much to send and second, subtractFeeFromAmount argument
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// for each receiver.
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//
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// privateRecipients is again the list of pairs, first the receiver data
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// which has following members, Address which is any spark address,
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// amount (v) how much we want to send, and memo which can be any string
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// with 32 length (any string we want to send to receiver), and the second
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// subtractFeeFromAmount,
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//
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// coins is the list of all our available spark coins
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//
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// cover_set_data_all is the list of all anonymity sets,
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//
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// idAndBlockHashes_all is the list of block hashes for each anonymity set
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//
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// txHashSig is the transaction hash only without spark data, tx version,
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// type, transparent outputs and everything else should be set before generating it.
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//
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// fee is a output data
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//
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// serializedSpend is a output data, byte array with spark spend, we need
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// to put it into vExtraPayload (this naming can be different in your codebase)
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//
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// outputScripts is a output data, it is a list of scripts, which we need
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// to put in separate tx outputs, and keep the order,
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// Amount vOut = Amount(
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// rawValue: BigInt.zero, fractionDigits: cryptoCurrency.fractionDigits);
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// Amount mintVOut = Amount(
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// rawValue: BigInt.zero, fractionDigits: cryptoCurrency.fractionDigits);
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// int recipientsToSubtractFee = 0;
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//
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// for (int i = 0; i < (txData.recipients?.length ?? 0); i++) {
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// vOut += txData.recipients![i].amount;
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// }
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//
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// if (vOut.raw > BigInt.from(SPARK_VALUE_SPEND_LIMIT_PER_TRANSACTION)) {
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// throw Exception(
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// "Spend to transparent address limit exceeded (10,000 Firo per transaction).",
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// );
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// }
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//
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// for (int i = 0; i < (txData.sparkRecipients?.length ?? 0); i++) {
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// mintVOut += txData.sparkRecipients![i].amount;
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// if (txData.sparkRecipients![i].subtractFeeFromAmount) {
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// recipientsToSubtractFee++;
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// }
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// }
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//
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// int fee;
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final txb = btc.TransactionBuilder(
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network: btc.NetworkType(
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messagePrefix: cryptoCurrency.networkParams.messagePrefix,
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bech32: cryptoCurrency.networkParams.bech32Hrp,
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bip32: btc.Bip32Type(
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public: cryptoCurrency.networkParams.pubHDPrefix,
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private: cryptoCurrency.networkParams.privHDPrefix,
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),
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pubKeyHash: cryptoCurrency.networkParams.p2pkhPrefix,
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scriptHash: cryptoCurrency.networkParams.p2shPrefix,
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wif: cryptoCurrency.networkParams.wifPrefix,
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),
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);
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txb.setLockTime(await chainHeight);
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txb.setVersion(3 | (9 << 16));
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// final estimated = LibSpark.selectSparkCoins(
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// requiredAmount: mintVOut.raw.toInt(),
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// subtractFeeFromAmount: recipientsToSubtractFee > 0,
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// coins: myCoins,
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// privateRecipientsCount: txData.sparkRecipients?.length ?? 0,
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// );
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//
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// fee = estimated.fee;
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// bool remainderSubtracted = false;
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// for (int i = 0; i < (txData.recipients?.length ?? 0); i++) {
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//
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//
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// if (recipient.fSubtractFeeFromAmount) {
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// // Subtract fee equally from each selected recipient.
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// recipient.nAmount -= fee / recipientsToSubtractFee;
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//
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// if (!remainderSubtracted) {
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// // First receiver pays the remainder not divisible by output count.
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// recipient.nAmount -= fee % recipientsToSubtractFee;
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// remainderSubtracted = true;
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// }
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// }
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// }
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// outputs
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// for (int i = 0; i < (txData.sparkRecipients?.length ?? 0); i++) {
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// if (txData.sparkRecipients![i].subtractFeeFromAmount) {
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// BigInt amount = txData.sparkRecipients![i].amount.raw;
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//
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// // Subtract fee equally from each selected recipient.
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// amount -= BigInt.from(fee / recipientsToSubtractFee);
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//
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// if (!remainderSubtracted) {
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// // First receiver pays the remainder not divisible by output count.
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// amount -= BigInt.from(fee % recipientsToSubtractFee);
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// remainderSubtracted = true;
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// }
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//
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// txData.sparkRecipients![i] = (
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// address: txData.sparkRecipients![i].address,
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// amount: Amount(
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// rawValue: amount,
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// fractionDigits: cryptoCurrency.fractionDigits,
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// ),
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// subtractFeeFromAmount:
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// txData.sparkRecipients![i].subtractFeeFromAmount,
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// memo: txData.sparkRecipients![i].memo,
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// );
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// }
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// }
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//
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// int spendInCurrentTx = 0;
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// for (final spendCoin in estimated.coins) {
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// spendInCurrentTx += spendCoin.value?.toInt() ?? 0;
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// }
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// spendInCurrentTx -= fee;
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//
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// int transparentOut = 0;
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for (int i = 0; i < (txData.recipients?.length ?? 0); i++) {
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if (txData.recipients![i].amount.raw == BigInt.zero) {
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continue;
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}
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if (txData.recipients![i].amount < cryptoCurrency.dustLimit) {
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throw Exception("Output below dust limit");
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}
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//
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// transparentOut += txData.recipients![i].amount.raw.toInt();
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txb.addOutput(
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txData.recipients![i].address,
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txData.recipients![i].amount.raw.toInt(),
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);
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}
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// // spendInCurrentTx -= transparentOut;
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// final List<({String address, int amount, String memo})> privOutputs = [];
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//
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// for (int i = 0; i < (txData.sparkRecipients?.length ?? 0); i++) {
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// if (txData.sparkRecipients![i].amount.raw == BigInt.zero) {
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// continue;
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// }
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//
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// final recipientAmount = txData.sparkRecipients![i].amount.raw.toInt();
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// // spendInCurrentTx -= recipientAmount;
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//
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// privOutputs.add(
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// (
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// address: txData.sparkRecipients![i].address,
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// amount: recipientAmount,
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// memo: txData.sparkRecipients![i].memo,
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// ),
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// );
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// }
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// if (spendInCurrentTx < 0) {
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// throw Exception("Unable to create spend transaction.");
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// }
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//
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// if (privOutputs.isEmpty || spendInCurrentTx > 0) {
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// final changeAddress = await LibSpark.getAddress(
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// privateKey: privateKey,
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// index: index,
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// diversifier: kSparkChange,
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// );
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//
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// privOutputs.add(
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// (
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// address: changeAddress,
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// amount: spendInCurrentTx > 0 ? spendInCurrentTx : 0,
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// memo: "",
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// ),
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// );
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// }
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// inputs
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final opReturnScript = bscript.compile([
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0xd3, // OP_SPARKSPEND
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Uint8List(0),
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]);
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txb.addInput(
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'0000000000000000000000000000000000000000000000000000000000000000',
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0xffffffff,
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0xffffffff,
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opReturnScript,
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);
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// final sig = extractedTx.getId();
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// for (final coin in estimated.coins) {
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// final groupId = coin.id!;
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// }
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final spend = LibSpark.createSparkSendTransaction(
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privateKeyHex: privateKey.toHex,
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index: index,
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recipients: [],
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privateRecipients: txData.sparkRecipients
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?.map((e) => (
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sparkAddress: e.address,
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amount: e.amount.raw.toInt(),
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subtractFeeFromAmount: e.subtractFeeFromAmount,
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memo: e.memo,
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))
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.toList() ??
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[],
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serializedMintMetas: serializedMintMetas,
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allAnonymitySets: allAnonymitySets,
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);
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print("SPARK SPEND ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
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print("fee: ${spend.fee}");
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print("spend: ${spend.serializedSpendPayload}");
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print("scripts:");
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spend.outputScripts.forEach(print);
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print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
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for (final outputScript in spend.outputScripts) {
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txb.addOutput(outputScript, 0);
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}
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final extractedTx = txb.buildIncomplete();
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// TODO: verify encoding
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extractedTx.setPayload(spend.serializedSpendPayload.toUint8ListFromUtf8);
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final rawTxHex = extractedTx.toHex();
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return txData.copyWith(
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raw: rawTxHex,
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vSize: extractedTx.virtualSize(),
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fee: Amount(
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rawValue: BigInt.from(spend.fee),
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fractionDigits: cryptoCurrency.fractionDigits,
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),
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// TODO used coins
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);
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}
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// this may not be needed for either mints or spends or both
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Future<TxData> confirmSendSpark({
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required TxData txData,
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}) async {
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throw UnimplementedError();
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}
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// TODO lots of room for performance improvements here. Should be similar to
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// recoverSparkWallet but only fetch and check anonymity set data that we
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// have not yet parsed.
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Future<void> refreshSparkData() async {
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final sparkAddresses = await mainDB.isar.addresses
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.where()
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.walletIdEqualTo(walletId)
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.filter()
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.typeEqualTo(AddressType.spark)
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.findAll();
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final Set<String> paths =
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sparkAddresses.map((e) => e.derivationPath!.value).toSet();
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try {
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const index = 1;
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final root = await getRootHDNode();
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final latestSparkCoinId = await electrumXClient.getSparkLatestCoinId();
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final futureResults = await Future.wait([
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electrumXCachedClient.getSparkAnonymitySet(
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groupId: latestSparkCoinId.toString(),
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coin: info.coin,
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),
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electrumXCachedClient.getSparkUsedCoinsTags(coin: info.coin),
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]);
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final anonymitySet = futureResults[0] as Map<String, dynamic>;
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final spentCoinTags = futureResults[1] as Set<String>;
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// find our coins
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final List<SparkCoin> myCoins = [];
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for (final path in paths) {
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final keys = root.derivePath(path);
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final privateKeyHex = keys.privateKey.data.toHex;
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for (final dynData in anonymitySet["coins"] as List) {
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final data = List<String>.from(dynData as List);
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if (data.length != 3) {
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throw Exception("Unexpected serialized coin info found");
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}
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final serializedCoin = data[0];
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final txHash = base64ToReverseHex(data[1]);
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final coin = LibSpark.identifyAndRecoverCoin(
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serializedCoin,
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privateKeyHex: privateKeyHex,
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index: index,
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context: base64Decode(data[2]),
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isTestNet: cryptoCurrency.network == CryptoCurrencyNetwork.test,
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);
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// its ours
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if (coin != null) {
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final SparkCoinType coinType;
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switch (coin.type.value) {
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case 0:
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coinType = SparkCoinType.mint;
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case 1:
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coinType = SparkCoinType.spend;
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default:
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throw Exception("Unknown spark coin type detected");
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}
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myCoins.add(
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SparkCoin(
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walletId: walletId,
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type: coinType,
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isUsed: spentCoinTags.contains(coin.lTagHash!),
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nonce: coin.nonceHex?.toUint8ListFromHex,
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address: coin.address!,
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txHash: txHash,
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valueIntString: coin.value!.toString(),
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memo: coin.memo,
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serialContext: coin.serialContext,
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diversifierIntString: coin.diversifier!.toString(),
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encryptedDiversifier: coin.encryptedDiversifier,
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serial: coin.serial,
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tag: coin.tag,
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lTagHash: coin.lTagHash!,
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height: coin.height,
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),
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);
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}
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}
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}
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// update wallet spark coins in isar
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if (myCoins.isNotEmpty) {
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await mainDB.isar.writeTxn(() async {
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await mainDB.isar.sparkCoins.putAll(myCoins);
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});
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}
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final coinsToCheck = await mainDB.isar.sparkCoins
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.where()
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.walletIdEqualToAnyLTagHash(walletId)
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.filter()
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.heightIsNull()
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.findAll();
|
|
final List<SparkCoin> updatedCoins = [];
|
|
for (final coin in coinsToCheck) {
|
|
final storedTx = await mainDB.getTransaction(walletId, coin.txHash);
|
|
if (storedTx?.height != null) {
|
|
updatedCoins.add(coin.copyWith(height: storedTx!.height!));
|
|
} else {
|
|
// TODO fetch tx from electrumx (and parse it to db?)
|
|
}
|
|
}
|
|
|
|
// update wallet spark coins in isar
|
|
if (updatedCoins.isNotEmpty) {
|
|
await mainDB.isar.writeTxn(() async {
|
|
await mainDB.isar.sparkCoins.putAll(updatedCoins);
|
|
});
|
|
}
|
|
|
|
// refresh spark balance
|
|
final currentHeight = await chainHeight;
|
|
final unusedCoins = await mainDB.isar.sparkCoins
|
|
.where()
|
|
.walletIdEqualToAnyLTagHash(walletId)
|
|
.filter()
|
|
.isUsedEqualTo(false)
|
|
.findAll();
|
|
|
|
final total = Amount(
|
|
rawValue: unusedCoins
|
|
.map((e) => e.value)
|
|
.fold(BigInt.zero, (prev, e) => prev + e),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
);
|
|
final spendable = Amount(
|
|
rawValue: unusedCoins
|
|
.where((e) =>
|
|
e.height != null &&
|
|
e.height! + cryptoCurrency.minConfirms >= currentHeight)
|
|
.map((e) => e.value)
|
|
.fold(BigInt.zero, (prev, e) => prev + e),
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
);
|
|
|
|
final sparkBalance = Balance(
|
|
total: total,
|
|
spendable: spendable,
|
|
blockedTotal: Amount(
|
|
rawValue: BigInt.zero,
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
),
|
|
pendingSpendable: total - spendable,
|
|
);
|
|
|
|
await info.updateBalanceTertiary(
|
|
newBalance: sparkBalance,
|
|
isar: mainDB.isar,
|
|
);
|
|
} catch (e, s) {
|
|
// todo logging
|
|
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
/// Should only be called within the standard wallet [recover] function due to
|
|
/// mutex locking. Otherwise behaviour MAY be undefined.
|
|
Future<void> recoverSparkWallet(
|
|
// {
|
|
// required int latestSetId,
|
|
// required Map<dynamic, dynamic> setDataMap,
|
|
// required Set<String> usedSerialNumbers,
|
|
// }
|
|
) async {
|
|
try {
|
|
// do we need to generate any spark address(es) here?
|
|
|
|
final latestSparkCoinId = await electrumXClient.getSparkLatestCoinId();
|
|
|
|
final anonymitySet = await electrumXCachedClient.getSparkAnonymitySet(
|
|
groupId: latestSparkCoinId.toString(),
|
|
coin: info.coin,
|
|
);
|
|
|
|
// TODO loop over set and see which coins are ours using the FFI call `identifyCoin`
|
|
List myCoins = [];
|
|
|
|
// fetch metadata for myCoins
|
|
|
|
// create list of Spark Coin isar objects
|
|
|
|
// update wallet spark coins in isar
|
|
|
|
throw UnimplementedError();
|
|
} catch (e, s) {
|
|
// todo logging
|
|
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
/// Transparent to Spark (mint) transaction creation.
|
|
///
|
|
/// See https://docs.google.com/document/d/1RG52GoYTZDvKlZz_3G4sQu-PpT6JWSZGHLNswWcrE3o
|
|
Future<TxData> prepareSparkMintTransaction({required TxData txData}) async {
|
|
// "this kind of transaction is generated like a regular transaction, but in
|
|
// place of [regular] outputs we put spark outputs... we construct the input
|
|
// part of the transaction first then we generate spark related data [and]
|
|
// we sign like regular transactions at the end."
|
|
|
|
// Validate inputs.
|
|
|
|
// There should be at least one input.
|
|
if (txData.utxos == null || txData.utxos!.isEmpty) {
|
|
throw Exception("No inputs provided.");
|
|
}
|
|
|
|
// For now let's limit to one input.
|
|
if (txData.utxos!.length > 1) {
|
|
throw Exception("Only one input supported.");
|
|
// TODO remove and test with multiple inputs.
|
|
}
|
|
|
|
// Validate individual inputs.
|
|
for (final utxo in txData.utxos!) {
|
|
// Input amount must be greater than zero.
|
|
if (utxo.value == 0) {
|
|
throw Exception("Input value cannot be zero.");
|
|
}
|
|
|
|
// Input value must be greater than dust limit.
|
|
if (BigInt.from(utxo.value) < cryptoCurrency.dustLimit.raw) {
|
|
throw Exception("Input value below dust limit.");
|
|
}
|
|
}
|
|
|
|
// Validate outputs.
|
|
|
|
// There should be at least one output.
|
|
if (txData.recipients == null || txData.recipients!.isEmpty) {
|
|
throw Exception("No recipients provided.");
|
|
}
|
|
|
|
// For now let's limit to one output.
|
|
if (txData.recipients!.length > 1) {
|
|
throw Exception("Only one recipient supported.");
|
|
// TODO remove and test with multiple recipients.
|
|
}
|
|
|
|
// Limit outputs per tx to 16.
|
|
//
|
|
// See SPARK_OUT_LIMIT_PER_TX at https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/include/spark.h#L16
|
|
if (txData.recipients!.length > 16) {
|
|
throw Exception("Too many recipients.");
|
|
}
|
|
|
|
// Limit spend value per tx to 1000000000000 satoshis.
|
|
//
|
|
// See SPARK_VALUE_SPEND_LIMIT_PER_TRANSACTION at https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/include/spark.h#L17
|
|
// and COIN https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/bitcoin/amount.h#L17
|
|
// Note that as MAX_MONEY is greater than this limit, we can ignore it. See https://github.com/firoorg/sparkmobile/blob/ef2e39aae18ecc49e0ddc63a3183e9764b96012e/bitcoin/amount.h#L31
|
|
//
|
|
// This will be added to and checked as we validate outputs.
|
|
Amount totalAmount = Amount(
|
|
rawValue: BigInt.zero,
|
|
fractionDigits: cryptoCurrency.fractionDigits,
|
|
);
|
|
|
|
// Validate individual outputs.
|
|
for (final recipient in txData.recipients!) {
|
|
// Output amount must be greater than zero.
|
|
if (recipient.amount.raw == BigInt.zero) {
|
|
throw Exception("Output amount cannot be zero.");
|
|
// Could refactor this for loop to use an index and remove this output.
|
|
}
|
|
|
|
// Output amount must be greater than dust limit.
|
|
if (recipient.amount < cryptoCurrency.dustLimit) {
|
|
throw Exception("Output below dust limit.");
|
|
}
|
|
|
|
// Do not add outputs that would exceed the spend limit.
|
|
totalAmount += recipient.amount;
|
|
if (totalAmount.raw > BigInt.from(1000000000000)) {
|
|
throw Exception(
|
|
"Spend limit exceeded (10,000 FIRO per tx).",
|
|
);
|
|
}
|
|
}
|
|
|
|
// Create a transaction builder and set locktime and version.
|
|
final txb = btc.TransactionBuilder(
|
|
network: btc.NetworkType(
|
|
messagePrefix: cryptoCurrency.networkParams.messagePrefix,
|
|
bech32: cryptoCurrency.networkParams.bech32Hrp,
|
|
bip32: btc.Bip32Type(
|
|
public: cryptoCurrency.networkParams.pubHDPrefix,
|
|
private: cryptoCurrency.networkParams.privHDPrefix,
|
|
),
|
|
pubKeyHash: cryptoCurrency.networkParams.p2pkhPrefix,
|
|
scriptHash: cryptoCurrency.networkParams.p2shPrefix,
|
|
wif: cryptoCurrency.networkParams.wifPrefix,
|
|
),
|
|
);
|
|
txb.setLockTime(await chainHeight);
|
|
txb.setVersion(1);
|
|
|
|
// Create a mint script.
|
|
final mintScript = bscript.compile([
|
|
0xd1, // OP_SPARKMINT.
|
|
Uint8List(0),
|
|
]);
|
|
|
|
// Add inputs.
|
|
for (final utxo in txData.utxos!) {
|
|
txb.addInput(
|
|
utxo.txid,
|
|
utxo.vout,
|
|
0xffffffff,
|
|
mintScript,
|
|
);
|
|
}
|
|
|
|
// Create the serial context.
|
|
//
|
|
// "...serial_context is a byte array, which should be unique for each
|
|
// transaction, and for that we serialize and put all inputs into
|
|
// serial_context vector."
|
|
List<int> serialContext = [];
|
|
for (final utxo in txData.utxos!) {
|
|
serialContext.addAll(
|
|
bscript.compile([
|
|
utxo.txid,
|
|
utxo.vout,
|
|
]),
|
|
);
|
|
}
|
|
|
|
// Create mint recipients.
|
|
final mintRecipients = LibSpark.createSparkMintRecipients(
|
|
outputs: txData.recipients!
|
|
.map((e) => (
|
|
sparkAddress: e.address,
|
|
value: e.amount.raw.toInt(),
|
|
memo: "Stackwallet spark mint"
|
|
))
|
|
.toList(),
|
|
serialContext: Uint8List.fromList(serialContext),
|
|
// generate: true // TODO is this needed?
|
|
);
|
|
|
|
// Add mint output(s).
|
|
for (final mint in mintRecipients) {
|
|
txb.addOutput(
|
|
mint.scriptPubKey,
|
|
mint.amount,
|
|
);
|
|
}
|
|
|
|
// TODO Sign the transaction.
|
|
|
|
throw UnimplementedError();
|
|
}
|
|
|
|
/// Broadcast a tx and TODO update Spark balance.
|
|
Future<TxData> confirmSparkMintTransaction({required TxData txData}) async {
|
|
// Broadcast tx.
|
|
final txid = await electrumXClient.broadcastTransaction(
|
|
rawTx: txData.raw!,
|
|
);
|
|
|
|
// Check txid.
|
|
assert(txid == txData.txid!);
|
|
|
|
// TODO update spark balance.
|
|
|
|
return txData.copyWith(
|
|
txid: txid,
|
|
);
|
|
}
|
|
|
|
@override
|
|
Future<void> updateBalance() async {
|
|
// call to super to update transparent balance (and lelantus balance if
|
|
// what ever class this mixin is used on uses LelantusInterface as well)
|
|
final normalBalanceFuture = super.updateBalance();
|
|
|
|
// todo: spark balance aka update info.tertiaryBalance
|
|
|
|
// wait for normalBalanceFuture to complete before returning
|
|
await normalBalanceFuture;
|
|
}
|
|
}
|
|
|
|
String base64ToReverseHex(String source) =>
|
|
base64Decode(LineSplitter.split(source).join())
|
|
.reversed
|
|
.map((e) => e.toRadixString(16).padLeft(2, '0'))
|
|
.join();
|