import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'dart:isolate';
import 'dart:math';
import 'package:bip39/bip39.dart' as bip39;
import 'package:bitcoindart/bitcoindart.dart';
import 'package:decimal/decimal.dart';
import 'package:flutter/foundation.dart';
import 'package:isar/isar.dart';
import 'package:lelantus/lelantus.dart';
import 'package:stackwallet/db/isar/main_db.dart';
import 'package:stackwallet/electrumx_rpc/cached_electrumx.dart';
import 'package:stackwallet/electrumx_rpc/electrumx.dart';
import 'package:stackwallet/models/balance.dart';
import 'package:stackwallet/models/isar/models/isar_models.dart' as isar_models;
import 'package:stackwallet/models/lelantus_coin.dart';
import 'package:stackwallet/models/lelantus_fee_data.dart';
import 'package:stackwallet/models/paymint/fee_object_model.dart';
import 'package:stackwallet/models/signing_data.dart';
import 'package:stackwallet/services/coins/coin_service.dart';
import 'package:stackwallet/services/event_bus/events/global/node_connection_status_changed_event.dart';
import 'package:stackwallet/services/event_bus/events/global/refresh_percent_changed_event.dart';
import 'package:stackwallet/services/event_bus/events/global/updated_in_background_event.dart';
import 'package:stackwallet/services/event_bus/events/global/wallet_sync_status_changed_event.dart';
import 'package:stackwallet/services/event_bus/global_event_bus.dart';
import 'package:stackwallet/services/mixins/firo_hive.dart';
import 'package:stackwallet/services/mixins/wallet_cache.dart';
import 'package:stackwallet/services/mixins/wallet_db.dart';
import 'package:stackwallet/services/mixins/xpubable.dart';
import 'package:stackwallet/services/node_service.dart';
import 'package:stackwallet/services/notifications_api.dart';
import 'package:stackwallet/services/transaction_notification_tracker.dart';
import 'package:stackwallet/utilities/address_utils.dart';
import 'package:stackwallet/utilities/amount/amount.dart';
import 'package:stackwallet/utilities/assets.dart';
import 'package:stackwallet/utilities/bip32_utils.dart';
import 'package:stackwallet/utilities/constants.dart';
import 'package:stackwallet/utilities/default_nodes.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
import 'package:stackwallet/utilities/enums/derive_path_type_enum.dart';
import 'package:stackwallet/utilities/enums/fee_rate_type_enum.dart';
import 'package:stackwallet/utilities/flutter_secure_storage_interface.dart';
import 'package:stackwallet/utilities/format.dart';
import 'package:stackwallet/utilities/logger.dart';
import 'package:stackwallet/utilities/prefs.dart';
import 'package:tuple/tuple.dart';
import 'package:uuid/uuid.dart';
const DUST_LIMIT = 1000;
const MINIMUM_CONFIRMATIONS = 1;
const MINT_LIMIT = 100100000000;
const int LELANTUS_VALUE_SPEND_LIMIT_PER_TRANSACTION = 5001 * 100000000;
const JMINT_INDEX = 5;
const MINT_INDEX = 2;
const TRANSACTION_LELANTUS = 8;
const ANONYMITY_SET_EMPTY_ID = 0;
const String GENESIS_HASH_MAINNET =
"4381deb85b1b2c9843c222944b616d997516dcbd6a964e1eaf0def0830695233";
const String GENESIS_HASH_TESTNET =
"aa22adcc12becaf436027ffe62a8fb21b234c58c23865291e5dc52cf53f64fca";
final firoNetwork = NetworkType(
messagePrefix: '\x18Zcoin Signed Message:\n',
bech32: 'bc',
bip32: Bip32Type(public: 0x0488b21e, private: 0x0488ade4),
pubKeyHash: 0x52,
scriptHash: 0x07,
wif: 0xd2);
final firoTestNetwork = NetworkType(
messagePrefix: '\x18Zcoin Signed Message:\n',
bech32: 'bc',
bip32: Bip32Type(public: 0x043587cf, private: 0x04358394),
pubKeyHash: 0x41,
scriptHash: 0xb2,
wif: 0xb9);
// isolate
Map<ReceivePort, Isolate> isolates = {};
Future<ReceivePort> getIsolate(Map<String, dynamic> arguments) async {
ReceivePort receivePort =
ReceivePort(); //port for isolate to receive messages.
arguments['sendPort'] = receivePort.sendPort;
Logging.instance
.log("starting isolate ${arguments['function']}", level: LogLevel.Info);
Isolate isolate = await Isolate.spawn(executeNative, arguments);
Logging.instance.log("isolate spawned!", level: LogLevel.Info);
isolates[receivePort] = isolate;
return receivePort;
}
Future<void> executeNative(Map<String, dynamic> arguments) async {
await Logging.instance.initInIsolate();
final sendPort = arguments['sendPort'] as SendPort;
final function = arguments['function'] as String;
try {
if (function == "createJoinSplit") {
final spendAmount = arguments['spendAmount'] as int;
final address = arguments['address'] as String;
final subtractFeeFromAmount = arguments['subtractFeeFromAmount'] as bool;
final mnemonic = arguments['mnemonic'] as String;
final mnemonicPassphrase = arguments['mnemonicPassphrase'] as String;
final index = arguments['index'] as int;
final lelantusEntries =
arguments['lelantusEntries'] as List<DartLelantusEntry>;
final coin = arguments['coin'] as Coin;
final network = arguments['network'] as NetworkType?;
final locktime = arguments['locktime'] as int;
final anonymitySets = arguments['_anonymity_sets'] as List<Map>?;
if (!(network == null || anonymitySets == null)) {
var joinSplit = await isolateCreateJoinSplitTransaction(
spendAmount,
address,
subtractFeeFromAmount,
mnemonic,
mnemonicPassphrase,
index,
lelantusEntries,
locktime,
coin,
network,
anonymitySets,
);
sendPort.send(joinSplit);
return;
}
} else if (function == "estimateJoinSplit") {
final spendAmount = arguments['spendAmount'] as int;
final subtractFeeFromAmount = arguments['subtractFeeFromAmount'] as bool?;
final lelantusEntries =
arguments['lelantusEntries'] as List<DartLelantusEntry>;
final coin = arguments['coin'] as Coin;
if (!(subtractFeeFromAmount == null)) {
var feeData = await isolateEstimateJoinSplitFee(
spendAmount, subtractFeeFromAmount, lelantusEntries, coin);
sendPort.send(feeData);
return;
}
} else if (function == "restore") {
final latestSetId = arguments['latestSetId'] as int;
final setDataMap = arguments['setDataMap'] as Map;
final usedSerialNumbers = arguments['usedSerialNumbers'] as List?;
final mnemonic = arguments['mnemonic'] as String;
final mnemonicPassphrase = arguments['mnemonicPassphrase'] as String;
final coin = arguments['coin'] as Coin;
final network = arguments['network'] as NetworkType?;
if (!(usedSerialNumbers == null || network == null)) {
var restoreData = await isolateRestore(
mnemonic,
mnemonicPassphrase,
coin,
latestSetId,
setDataMap,
usedSerialNumbers,
network,
);
sendPort.send(restoreData);
return;
}
} else if (function == "isolateDerive") {
final mnemonic = arguments['mnemonic'] as String;
final mnemonicPassphrase = arguments['mnemonicPassphrase'] as String;
final from = arguments['from'] as int;
final to = arguments['to'] as int;
final network = arguments['network'] as NetworkType?;
if (!(network == null)) {
var derived = await isolateDerive(
mnemonic, mnemonicPassphrase, from, to, network);
sendPort.send(derived);
return;
}
}
Logging.instance.log(
"Error Arguments for $function not formatted correctly",
level: LogLevel.Fatal);
sendPort.send("Error");
} catch (e, s) {
Logging.instance.log(
"An error was thrown in this isolate $function: $e\n$s",
level: LogLevel.Error);
sendPort.send("Error");
} finally {
await Logging.instance.isar?.close();
}
}
void stop(ReceivePort port) {
Isolate? isolate = isolates.remove(port);
if (isolate != null) {
Logging.instance.log('Stopping Isolate...', level: LogLevel.Info);
isolate.kill(priority: Isolate.immediate);
isolate = null;
}
}
Future<Map<String, dynamic>> isolateDerive(
String mnemonic,
String mnemonicPassphrase,
int from,
int to,
NetworkType _network,
) async {
Map<String, dynamic> result = {};
Map<String, dynamic> allReceive = {};
Map<String, dynamic> allChange = {};
final root = await Bip32Utils.getBip32Root(
mnemonic,
mnemonicPassphrase,
_network,
);
for (int i = from; i < to; i++) {
final derivePathReceiving = constructDerivePath(
networkWIF: _network.wif,
chain: 0,
index: i,
);
var currentNode = await Bip32Utils.getBip32NodeFromRoot(
root,
derivePathReceiving,
);
var address = P2PKH(
network: _network, data: PaymentData(pubkey: currentNode.publicKey))
.data
.address!;
allReceive["$i"] = {
"publicKey": Format.uint8listToString(currentNode.publicKey),
"wif": currentNode.toWIF(),
"address": address,
};
final derivePathChange = constructDerivePath(
networkWIF: _network.wif,
chain: 1,
index: i,
);
currentNode = await Bip32Utils.getBip32NodeFromRoot(
root,
derivePathChange,
);
address = P2PKH(
network: _network, data: PaymentData(pubkey: currentNode.publicKey))
.data
.address!;
allChange["$i"] = {
"publicKey": Format.uint8listToString(currentNode.publicKey),
"wif": currentNode.toWIF(),
"address": address,
};
if (i % 50 == 0) {
Logging.instance.log("thread at $i", level: LogLevel.Info);
}
}
result['receive'] = allReceive;
result['change'] = allChange;
return result;
}
Future<Map<String, dynamic>> isolateRestore(
String mnemonic,
String mnemonicPassphrase,
Coin coin,
int _latestSetId,
Map<dynamic, dynamic> _setDataMap,
List<dynamic> _usedSerialNumbers,
NetworkType network,
) async {
List<int> jindexes = [];
List<Map<dynamic, LelantusCoin>> lelantusCoins = [];
final List<String> spendTxIds = [];
var lastFoundIndex = 0;
var currentIndex = 0;
try {
final usedSerialNumbers = _usedSerialNumbers;
Set<dynamic> usedSerialNumbersSet = {};
for (int ind = 0; ind < usedSerialNumbers.length; ind++) {
usedSerialNumbersSet.add(usedSerialNumbers[ind]);
}
final root = await Bip32Utils.getBip32Root(
mnemonic,
mnemonicPassphrase,
network,
);
while (currentIndex < lastFoundIndex + 50) {
final _derivePath = constructDerivePath(
networkWIF: network.wif,
chain: MINT_INDEX,
index: currentIndex,
);
final mintKeyPair =
await Bip32Utils.getBip32NodeFromRoot(root, _derivePath);
final mintTag = CreateTag(
Format.uint8listToString(mintKeyPair.privateKey!),
currentIndex,
Format.uint8listToString(mintKeyPair.identifier),
isTestnet: coin == Coin.firoTestNet);
for (var setId = 1; setId <= _latestSetId; setId++) {
final setData = _setDataMap[setId];
final foundCoin = setData["coins"].firstWhere(
(dynamic e) => e[1] == mintTag,
orElse: () => <Object>[]);
if (foundCoin.length == 4) {
lastFoundIndex = currentIndex;
if (foundCoin[2] is int) {
final amount = foundCoin[2] as int;
final serialNumber = GetSerialNumber(amount,
Format.uint8listToString(mintKeyPair.privateKey!), currentIndex,
isTestnet: coin == Coin.firoTestNet);
String publicCoin = foundCoin[0] as String;
String txId = foundCoin[3] as String;
bool isUsed = usedSerialNumbersSet.contains(serialNumber);
final duplicateCoin = lelantusCoins.firstWhere((element) {
final coin = element.values.first;
return coin.txId == txId &&
coin.index == currentIndex &&
coin.anonymitySetId != setId;
}, orElse: () => {});
if (duplicateCoin.isNotEmpty) {
//todo: check if print needed
// debugPrint("removing duplicate: $duplicateCoin");
lelantusCoins.remove(duplicateCoin);
}
lelantusCoins.add({
publicCoin: LelantusCoin(
currentIndex,
amount,
publicCoin,
txId,
setId,
isUsed,
)
});
Logging.instance
.log("amount $amount used $isUsed", level: LogLevel.Info);
} else {
final keyPath = GetAesKeyPath(foundCoin[0] as String);
final derivePath = constructDerivePath(
networkWIF: network.wif,
chain: JMINT_INDEX,
index: keyPath,
);
final aesKeyPair =
await Bip32Utils.getBip32NodeFromRoot(root, derivePath);
if (aesKeyPair.privateKey != null) {
final aesPrivateKey =
Format.uint8listToString(aesKeyPair.privateKey!);
final amount = decryptMintAmount(
aesPrivateKey,
foundCoin[2] as String,
);
final serialNumber = GetSerialNumber(
amount,
Format.uint8listToString(mintKeyPair.privateKey!),
currentIndex,
isTestnet: coin == Coin.firoTestNet);
String publicCoin = foundCoin[0] as String;
String txId = foundCoin[3] as String;
bool isUsed = usedSerialNumbersSet.contains(serialNumber);
final duplicateCoin = lelantusCoins.firstWhere((element) {
final coin = element.values.first;
return coin.txId == txId &&
coin.index == currentIndex &&
coin.anonymitySetId != setId;
}, orElse: () => {});
if (duplicateCoin.isNotEmpty) {
//todo: check if print needed
// debugPrint("removing duplicate: $duplicateCoin");
lelantusCoins.remove(duplicateCoin);
}
lelantusCoins.add({
'${foundCoin[3]!}': LelantusCoin(
currentIndex,
amount,
publicCoin,
txId,
setId,
isUsed,
)
});
jindexes.add(currentIndex);
spendTxIds.add(foundCoin[3] as String);
}
}
}
}
currentIndex++;
}
} catch (e, s) {
Logging.instance.log("Exception rethrown from isolateRestore(): $e\n$s",
level: LogLevel.Info);
rethrow;
}
Map<String, dynamic> result = {};
// Logging.instance.log("mints $lelantusCoins", addToDebugMessagesDB: false);
// Logging.instance.log("jmints $spendTxIds", addToDebugMessagesDB: false);
result['_lelantus_coins'] = lelantusCoins;
result['mintIndex'] = lastFoundIndex + 1;
result['jindex'] = jindexes;
result['spendTxIds'] = spendTxIds;
return result;
}
Future<Map<dynamic, dynamic>> staticProcessRestore(
List<isar_models.Transaction> txns,
Map<dynamic, dynamic> result,
int currentHeight,
) async {
List<dynamic>? _l = result['_lelantus_coins'] as List?;
final List<Map<dynamic, LelantusCoin>> lelantusCoins = [];
for (var el in _l ?? []) {
lelantusCoins.add({el.keys.first: el.values.first as LelantusCoin});
}
// Edit the receive transactions with the mint fees.
Map<String, isar_models.Transaction> editedTransactions =
<String, isar_models.Transaction>{};
for (var item in lelantusCoins) {
item.forEach((key, value) {
String txid = value.txId;
isar_models.Transaction? tx;
try {
tx = txns.firstWhere((e) => e.txid == txid);
} catch (_) {
tx = null;
}
if (tx == null) {
// This is a jmint.
return;
}
List<isar_models.Transaction> inputs = [];
for (var element in tx.inputs) {
isar_models.Transaction? input;
try {
input = txns.firstWhere((e) => e.txid == element.txid);
} catch (_) {
input = null;
}
if (input != null) {
inputs.add(input);
}
}
if (inputs.isEmpty) {
//some error.
return;
}
int mintFee = tx.fee;
int sharedFee = mintFee ~/ inputs.length;
for (var element in inputs) {
editedTransactions[element.txid] = isar_models.Transaction(
walletId: element.walletId,
txid: element.txid,
timestamp: element.timestamp,
type: element.type,
subType: isar_models.TransactionSubType.mint,
amount: element.amount,
amountString: Amount(
rawValue: BigInt.from(element.amount),
fractionDigits: Coin.firo.decimals,
).toJsonString(),
fee: sharedFee,
height: element.height,
isCancelled: false,
isLelantus: true,
slateId: null,
otherData: txid,
nonce: null,
inputs: element.inputs,
outputs: element.outputs,
)..address.value = element.address.value;
}
});
}
// Logging.instance.log(editedTransactions, addToDebugMessagesDB: false);
Map<String, isar_models.Transaction> transactionMap = {};
for (final e in txns) {
transactionMap[e.txid] = e;
}
// Logging.instance.log(transactionMap, addToDebugMessagesDB: false);
editedTransactions.forEach((key, value) {
transactionMap.update(key, (_value) => value);
});
transactionMap.removeWhere((key, value) =>
lelantusCoins.any((element) => element.containsKey(key)) ||
((value.height == -1 || value.height == null) &&
!value.isConfirmed(currentHeight, MINIMUM_CONFIRMATIONS)));
result['newTxMap'] = transactionMap;
return result;
}
Future<LelantusFeeData> isolateEstimateJoinSplitFee(
int spendAmount,
bool subtractFeeFromAmount,
List<DartLelantusEntry> lelantusEntries,
Coin coin) async {
Logging.instance.log("estimateJoinsplit fee", level: LogLevel.Info);
// for (int i = 0; i < lelantusEntries.length; i++) {
// Logging.instance.log(lelantusEntries[i], addToDebugMessagesDB: false);
// }
Logging.instance
.log("$spendAmount $subtractFeeFromAmount", level: LogLevel.Info);
List<int> changeToMint = List.empty(growable: true);
List<int> spendCoinIndexes = List.empty(growable: true);
// Logging.instance.log(lelantusEntries, addToDebugMessagesDB: false);
final fee = estimateFee(
spendAmount,
subtractFeeFromAmount,
lelantusEntries,
changeToMint,
spendCoinIndexes,
isTestnet: coin == Coin.firoTestNet,
);
final estimateFeeData =
LelantusFeeData(changeToMint[0], fee, spendCoinIndexes);
Logging.instance.log(
"estimateFeeData ${estimateFeeData.changeToMint} ${estimateFeeData.fee} ${estimateFeeData.spendCoinIndexes}",
level: LogLevel.Info);
return estimateFeeData;
}
Future<dynamic> isolateCreateJoinSplitTransaction(
int spendAmount,
String address,
bool subtractFeeFromAmount,
String mnemonic,
String mnemonicPassphrase,
int index,
List<DartLelantusEntry> lelantusEntries,
int locktime,
Coin coin,
NetworkType _network,
List<Map<dynamic, dynamic>> anonymitySetsArg,
) async {
final estimateJoinSplitFee = await isolateEstimateJoinSplitFee(
spendAmount, subtractFeeFromAmount, lelantusEntries, coin);
var changeToMint = estimateJoinSplitFee.changeToMint;
var fee = estimateJoinSplitFee.fee;
var spendCoinIndexes = estimateJoinSplitFee.spendCoinIndexes;
Logging.instance
.log("$changeToMint $fee $spendCoinIndexes", level: LogLevel.Info);
if (spendCoinIndexes.isEmpty) {
Logging.instance.log("Error, Not enough funds.", level: LogLevel.Error);
return 1;
}
final tx = TransactionBuilder(network: _network);
tx.setLockTime(locktime);
tx.setVersion(3 | (TRANSACTION_LELANTUS << 16));
tx.addInput(
'0000000000000000000000000000000000000000000000000000000000000000',
4294967295,
4294967295,
Uint8List(0),
);
final derivePath = constructDerivePath(
networkWIF: _network.wif,
chain: MINT_INDEX,
index: index,
);
final jmintKeyPair = await Bip32Utils.getBip32Node(
mnemonic,
mnemonicPassphrase,
_network,
derivePath,
);
final String jmintprivatekey =
Format.uint8listToString(jmintKeyPair.privateKey!);
final keyPath = getMintKeyPath(changeToMint, jmintprivatekey, index,
isTestnet: coin == Coin.firoTestNet);
final _derivePath = constructDerivePath(
networkWIF: _network.wif,
chain: JMINT_INDEX,
index: keyPath,
);
final aesKeyPair = await Bip32Utils.getBip32Node(
mnemonic,
mnemonicPassphrase,
_network,
_derivePath,
);
final aesPrivateKey = Format.uint8listToString(aesKeyPair.privateKey!);
final jmintData = createJMintScript(
changeToMint,
Format.uint8listToString(jmintKeyPair.privateKey!),
index,
Format.uint8listToString(jmintKeyPair.identifier),
aesPrivateKey,
isTestnet: coin == Coin.firoTestNet,
);
tx.addOutput(
Format.stringToUint8List(jmintData),
0,
);
int amount = spendAmount;
if (subtractFeeFromAmount) {
amount -= fee;
}
tx.addOutput(
address,
amount,
);
final extractedTx = tx.buildIncomplete();
extractedTx.setPayload(Uint8List(0));
final txHash = extractedTx.getId();
final List<int> setIds = [];
final List<List<String>> anonymitySets = [];
final List<String> anonymitySetHashes = [];
final List<String> groupBlockHashes = [];
for (var i = 0; i < lelantusEntries.length; i++) {
final anonymitySetId = lelantusEntries[i].anonymitySetId;
if (!setIds.contains(anonymitySetId)) {
setIds.add(anonymitySetId);
final anonymitySet = anonymitySetsArg.firstWhere(
(element) => element["setId"] == anonymitySetId,
orElse: () => <String, dynamic>{});
if (anonymitySet.isNotEmpty) {
anonymitySetHashes.add(anonymitySet['setHash'] as String);
groupBlockHashes.add(anonymitySet['blockHash'] as String);
List<String> list = [];
for (int i = 0; i < (anonymitySet['coins'] as List).length; i++) {
list.add(anonymitySet['coins'][i][0] as String);
}
anonymitySets.add(list);
}
}
}
final String spendScript = createJoinSplitScript(
txHash,
spendAmount,
subtractFeeFromAmount,
Format.uint8listToString(jmintKeyPair.privateKey!),
index,
lelantusEntries,
setIds,
anonymitySets,
anonymitySetHashes,
groupBlockHashes,
isTestnet: coin == Coin.firoTestNet);
final finalTx = TransactionBuilder(network: _network);
finalTx.setLockTime(locktime);
finalTx.setVersion(3 | (TRANSACTION_LELANTUS << 16));
finalTx.addOutput(
Format.stringToUint8List(jmintData),
0,
);
finalTx.addOutput(
address,
amount,
);
final extTx = finalTx.buildIncomplete();
extTx.addInput(
Format.stringToUint8List(
'0000000000000000000000000000000000000000000000000000000000000000'),
4294967295,
4294967295,
Format.stringToUint8List("c9"),
);
debugPrint("spendscript: $spendScript");
extTx.setPayload(Format.stringToUint8List(spendScript));
final txHex = extTx.toHex();
final txId = extTx.getId();
Logging.instance.log("txid $txId", level: LogLevel.Info);
Logging.instance.log("txHex: $txHex", level: LogLevel.Info);
final amountAmount = Amount(
rawValue: BigInt.from(amount),
fractionDigits: coin.decimals,
);
return {
"txid": txId,
"txHex": txHex,
"value": amount,
"fees": Amount(
rawValue: BigInt.from(fee),
fractionDigits: coin.decimals,
).decimal.toDouble(),
"fee": fee,
"vSize": extTx.virtualSize(),
"jmintValue": changeToMint,
"publicCoin": "jmintData.publicCoin",
"spendCoinIndexes": spendCoinIndexes,
"height": locktime,
"txType": "Sent",
"confirmed_status": false,
"amount": amountAmount.decimal.toDouble(),
"recipientAmt": amountAmount,
"address": address,
"timestamp": DateTime.now().millisecondsSinceEpoch ~/ 1000,
"subType": "join",
};
}
Future<int> getBlockHead(ElectrumX client) async {
try {
final tip = await client.getBlockHeadTip();
return tip["height"] as int;
} catch (e) {
Logging.instance
.log("Exception rethrown in getBlockHead(): $e", level: LogLevel.Error);
rethrow;
}
}
// end of isolates
String constructDerivePath({
// required DerivePathType derivePathType,
required int networkWIF,
int account = 0,
required int chain,
required int index,
}) {
String coinType;
switch (networkWIF) {
case 0xd2: // firo mainnet wif
coinType = "136"; // firo mainnet
break;
case 0xb9: // firo testnet wif
coinType = "1"; // firo testnet
break;
default:
throw Exception("Invalid Firo network wif used!");
}
int purpose;
// switch (derivePathType) {
// case DerivePathType.bip44:
purpose = 44;
// break;
// default:
// throw Exception("DerivePathType $derivePathType not supported");
// }
return "m/$purpose'/$coinType'/$account'/$chain/$index";
}
Future<String> _getMintScriptWrapper(
Tuple5<int, String, int, String, bool> data) async {
String mintHex = getMintScript(data.item1, data.item2, data.item3, data.item4,
isTestnet: data.item5);
return mintHex;
}
Future<void> _setTestnetWrapper(bool isTestnet) async {
// setTestnet(isTestnet);
}
/// Handles a single instance of a firo wallet
class FiroWallet extends CoinServiceAPI
with WalletCache, WalletDB, FiroHive
implements XPubAble {
// Constructor
FiroWallet({
required String walletId,
required String walletName,
required Coin coin,
required ElectrumX client,
required CachedElectrumX cachedClient,
required TransactionNotificationTracker tracker,
required SecureStorageInterface secureStore,
MainDB? mockableOverride,
}) {
txTracker = tracker;
_walletId = walletId;
_walletName = walletName;
_coin = coin;
_electrumXClient = client;
_cachedElectrumXClient = cachedClient;
_secureStore = secureStore;
initCache(walletId, coin);
initFiroHive(walletId);
initWalletDB(mockableOverride: mockableOverride);
Logging.instance.log("$walletName isolates length: ${isolates.length}",
level: LogLevel.Info);
// investigate possible issues killing shared isolates between multiple firo instances
for (final isolate in isolates.values) {
isolate.kill(priority: Isolate.immediate);
}
isolates.clear();
}
static const integrationTestFlag =
bool.fromEnvironment("IS_INTEGRATION_TEST");
final _prefs = Prefs.instance;
Timer? timer;
late final Coin _coin;
bool _shouldAutoSync = false;
@override
bool get shouldAutoSync => _shouldAutoSync;
@override
set shouldAutoSync(bool shouldAutoSync) {
if (_shouldAutoSync != shouldAutoSync) {
_shouldAutoSync = shouldAutoSync;
if (!shouldAutoSync) {
timer?.cancel();
timer = null;
stopNetworkAlivePinging();
} else {
startNetworkAlivePinging();
refresh();
}
}
}
NetworkType get _network {
switch (coin) {
case Coin.firo:
return firoNetwork;
case Coin.firoTestNet:
return firoTestNetwork;
default:
throw Exception("Invalid network type!");
}
}
@override
set isFavorite(bool markFavorite) {
_isFavorite = markFavorite;
updateCachedIsFavorite(markFavorite);
}
@override
bool get isFavorite => _isFavorite ??= getCachedIsFavorite();
bool? _isFavorite;
@override
Coin get coin => _coin;
@override
Future<List<String>> get mnemonic => _getMnemonicList();
@override
Future<String?> get mnemonicString =>
_secureStore.read(key: '${_walletId}_mnemonic');
@override
Future<String?> get mnemonicPassphrase => _secureStore.read(
key: '${_walletId}_mnemonicPassphrase',
);
@override
bool validateAddress(String address) {
return Address.validateAddress(address, _network);
}
/// Holds wallet transaction data
Future<List<isar_models.Transaction>> get _txnData => db
.getTransactions(walletId)
.filter()
.isLelantusIsNull()
.or()
.isLelantusEqualTo(false)
.findAll();
// _transactionData ??= _refreshTransactions();
// models.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 transaction = isar_models.Transaction(
walletId: walletId,
txid: txData["txid"] as String,
timestamp: DateTime.now().millisecondsSinceEpoch ~/ 1000,
type: isar_models.TransactionType.outgoing,
subType: isar_models.TransactionSubType.none,
// precision may be lost here hence the following amountString
amount: (txData["recipientAmt"] as Amount).raw.toInt(),
amountString: (txData["recipientAmt"] as Amount).toJsonString(),
fee: txData["fee"] as int,
height: null,
isCancelled: false,
isLelantus: false,
otherData: null,
slateId: null,
nonce: null,
inputs: [],
outputs: [],
);
final address = txData["address"] is String
? await db.getAddress(walletId, txData["address"] as String)
: null;
await db.addNewTransactionData(
[
Tuple2(transaction, address),
],
walletId,
);
}
/// Holds the max fee that can be sent
Future<int>? _maxFee;
@override
Future<int> get maxFee => _maxFee ??= _fetchMaxFee();
Future<FeeObject>? _feeObject;
@override
Future<FeeObject> get fees => _feeObject ??= _getFees();
@override
Future<String> get currentReceivingAddress async =>
(await _currentReceivingAddress).value;
Future<isar_models.Address> get _currentReceivingAddress async =>
(await db
.getAddresses(walletId)
.filter()
.typeEqualTo(isar_models.AddressType.p2pkh)
.subTypeEqualTo(isar_models.AddressSubType.receiving)
.sortByDerivationIndexDesc()
.findFirst()) ??
await _generateAddressForChain(0, 0);
Future<String> get currentChangeAddress async =>
(await _currentChangeAddress).value;
Future<isar_models.Address> get _currentChangeAddress async =>
(await db
.getAddresses(walletId)
.filter()
.typeEqualTo(isar_models.AddressType.p2pkh)
.subTypeEqualTo(isar_models.AddressSubType.change)
.sortByDerivationIndexDesc()
.findFirst()) ??
await _generateAddressForChain(1, 0);
late String _walletName;
@override
String get walletName => _walletName;
// setter for updating on rename
@override
set walletName(String newName) => _walletName = newName;
/// unique wallet id
late final String _walletId;
@override
String get walletId => _walletId;
@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;
Future<Map<String, dynamic>> prepareSendPublic({
required String address,
required Amount amount,
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 = availablePublicBalance();
if (amount == balance) {
isSendAll = true;
}
final txData = await coinSelection(
amount.raw.toInt(),
rate,
address,
isSendAll,
);
Logging.instance.log("prepare send: $txData", level: LogLevel.Info);
try {
if (txData is int) {
switch (txData) {
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 $txData");
}
} else {
final hex = txData["hex"];
if (hex is String) {
final fee = txData["fee"] as int;
final vSize = txData["vSize"] as int;
Logging.instance
.log("prepared txHex: $hex", level: LogLevel.Info);
Logging.instance.log("prepared fee: $fee", level: LogLevel.Info);
Logging.instance
.log("prepared 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 txData as Map<String, dynamic>;
} else {
throw Exception("prepared hex is not a String!!!");
}
}
} catch (e, s) {
Logging.instance.log("Exception rethrown from prepareSend(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
} 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;
}
}
Future<String> confirmSendPublic({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);
txData["txid"] = txHash;
// dirty ui update hack
await updateSentCachedTxData(txData as Map<String, dynamic>);
return txHash;
} catch (e, s) {
Logging.instance.log("Exception rethrown from confirmSend(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
@override
Future<Map<String, dynamic>> prepareSend({
required String address,
required Amount amount,
Map<String, dynamic>? args,
}) async {
try {
// check for send all
bool isSendAll = false;
final balance = availablePrivateBalance();
if (amount == balance) {
// print("is send all");
isSendAll = true;
}
dynamic txHexOrError = await _createJoinSplitTransaction(
amount.raw.toInt(),
address,
isSendAll,
);
Logging.instance.log("txHexOrError $txHexOrError", level: LogLevel.Error);
if (txHexOrError is int) {
// Here, we assume that transaction crafting returned an error
switch (txHexOrError) {
case 1:
throw Exception("Insufficient balance!");
default:
throw Exception("Error Creating Transaction!");
}
} else {
final fee = txHexOrError["fee"] as int;
final vSize = txHexOrError["vSize"] as int;
Logging.instance.log("prepared fee: $fee", level: LogLevel.Info);
Logging.instance.log("prepared 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 txHexOrError as Map<String, dynamic>;
}
} catch (e, s) {
Logging.instance.log("Exception rethrown in firo prepareSend(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
@override
Future<String> confirmSend({required Map<String, dynamic> txData}) async {
if (await _submitLelantusToNetwork(txData)) {
try {
final txid = txData["txid"] as String;
// temporarily update apdate available balance until a full refresh is done
// TODO: something here causes an exception to be thrown giving user false info that the tx failed
// Decimal sendTotal =
// Format.satoshisToAmount(txData["value"] as int, coin: coin);
// sendTotal += Decimal.parse(txData["fees"].toString());
// TODO: is this needed?
// final bals = await balances;
// bals[0] -= sendTotal;
// _balances = Future(() => bals);
return txid;
} catch (e, s) {
//todo: come back to this
debugPrint("$e $s");
return txData["txid"] as String;
// don't throw anything here or it will tell the user that th tx
// failed even though it was successfully broadcast to network
// throw Exception("Transaction failed.");
}
} else {
//TODO provide more info
throw Exception("Transaction failed.");
}
}
// /// returns txid on successful send
// ///
// /// can throw
// @override
// Future<String> send({
// required String toAddress,
// required int amount,
// Map<String, String> args = const {},
// }) async {
// try {
// dynamic txHexOrError =
// await _createJoinSplitTransaction(amount, toAddress, false);
// Logging.instance.log("txHexOrError $txHexOrError", level: LogLevel.Error);
// if (txHexOrError is int) {
// // Here, we assume that transaction crafting returned an error
// switch (txHexOrError) {
// case 1:
// throw Exception("Insufficient balance!");
// default:
// throw Exception("Error Creating Transaction!");
// }
// } else {
// if (await _submitLelantusToNetwork(
// txHexOrError as Map<String, dynamic>)) {
// final txid = txHexOrError["txid"] as String;
//
// // temporarily update apdate available balance until a full refresh is done
// Decimal sendTotal =
// Format.satoshisToAmount(txHexOrError["value"] as int, coin: coin);
// sendTotal += Decimal.parse(txHexOrError["fees"].toString());
// final bals = await balances;
// bals[0] -= sendTotal;
// _balances = Future(() => bals);
//
// return txid;
// } else {
// //TODO provide more info
// throw Exception("Transaction failed.");
// }
// }
// } catch (e, s) {
// Logging.instance.log("Exception rethrown in firo send(): $e\n$s",
// level: LogLevel.Error);
// rethrow;
// }
// }
Future<List<String>> _getMnemonicList() async {
final _mnemonicString = await mnemonicString;
if (_mnemonicString == null) {
return [];
}
final List<String> data = _mnemonicString.split(' ');
return data;
}
late ElectrumX _electrumXClient;
ElectrumX get electrumXClient => _electrumXClient;
late CachedElectrumX _cachedElectrumXClient;
CachedElectrumX get cachedElectrumXClient => _cachedElectrumXClient;
late SecureStorageInterface _secureStore;
late TransactionNotificationTracker txTracker;
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<isar_models.UTXO>? utxos,
}) async {
Logging.instance
.log("Starting coinSelection ----------", level: LogLevel.Info);
final List<isar_models.UTXO> availableOutputs = utxos ?? await this.utxos;
final currentChainHeight = await chainHeight;
final List<isar_models.UTXO> 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].isBlocked == false &&
availableOutputs[i]
.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) ==
true) {
spendableOutputs.add(availableOutputs[i]);
spendableSatoshiValue += availableOutputs[i].value;
}
}
// sort spendable by age (oldest first)
spendableOutputs.sort((a, b) => b.blockTime!.compareTo(a.blockTime!));
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<isar_models.UTXO> 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);
// 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(
utxoSigningData: utxoSigningData,
recipients: [_recipientAddress],
satoshiAmounts: [satoshisBeingUsed - 1],
))["vSize"] as int;
int feeForOneOutput = estimateTxFee(
vSize: vSizeForOneOutput,
feeRatePerKB: selectedTxFeeRate,
);
if (feeForOneOutput < vSizeForOneOutput + 1) {
feeForOneOutput = vSizeForOneOutput + 1;
}
final int amount = satoshiAmountToSend - feeForOneOutput;
dynamic txn = await buildTransaction(
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: [amount],
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": Amount(
rawValue: BigInt.from(amount),
fractionDigits: coin.decimals,
),
"fee": feeForOneOutput,
"vSize": txn["vSize"],
};
return transactionObject;
}
final int vSizeForOneOutput = (await buildTransaction(
utxoSigningData: utxoSigningData,
recipients: [_recipientAddress],
satoshiAmounts: [satoshisBeingUsed - 1],
))["vSize"] as int;
final int vSizeForTwoOutPuts = (await buildTransaction(
utxoSigningData: utxoSigningData,
recipients: [
_recipientAddress,
await _getCurrentAddressForChain(1),
],
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)) {
feeForOneOutput = (vSizeForOneOutput + 1);
}
if (feeForTwoOutputs < ((vSizeForTwoOutPuts + 1))) {
feeForTwoOutputs = ((vSizeForTwoOutPuts + 1));
}
Logging.instance
.log("feeForTwoOutputs: $feeForTwoOutputs", level: LogLevel.Info);
Logging.instance
.log("feeForOneOutput: $feeForOneOutput", level: LogLevel.Info);
if (satoshisBeingUsed - satoshiAmountToSend > feeForOneOutput) {
if (satoshisBeingUsed - satoshiAmountToSend >
feeForOneOutput + DUST_LIMIT) {
// 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 > DUST_LIMIT 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();
final String newChangeAddress = await _getCurrentAddressForChain(1);
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(
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(
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
}
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": Amount(
rawValue: BigInt.from(recipientsAmtArray[0]),
fractionDigits: coin.decimals,
),
"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(
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": Amount(
rawValue: BigInt.from(recipientsAmtArray[0]),
fractionDigits: coin.decimals,
),
"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(
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": Amount(
rawValue: BigInt.from(recipientsAmtArray[0]),
fractionDigits: coin.decimals,
),
"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(
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": Amount(
rawValue: BigInt.from(recipientsAmtArray[0]),
fractionDigits: coin.decimals,
),
"fee": feeForOneOutput,
"vSize": txn["vSize"],
};
return transactionObject;
} else {
// Remember that returning 2 indicates that the user does not have a sufficient balance to
// pay for the transaction fee. Ideally, at this stage, we should check if the user has any
// additional outputs they're able to spend and then recalculate fees.
Logging.instance.log(
'Cannot pay tx fee - checking for more outputs and trying again',
level: LogLevel.Warning);
// try adding more outputs
if (spendableOutputs.length > inputsBeingConsumed) {
return coinSelection(satoshiAmountToSend, selectedTxFeeRate,
_recipientAddress, isSendAll,
additionalOutputs: additionalOutputs + 1, utxos: utxos);
}
return 2;
}
}
Future<List<SigningData>> fetchBuildTxData(
List<isar_models.UTXO> utxosToUse,
) async {
// return data
List<SigningData> signingData = [];
try {
// Populating the addresses to check
for (var i = 0; i < utxosToUse.length; i++) {
if (utxosToUse[i].address == null) {
final txid = utxosToUse[i].txid;
final tx = await _cachedElectrumXClient.getTransaction(
txHash: txid,
coin: coin,
);
for (final output in tx["vout"] as List) {
final n = output["n"];
if (n != null && n == utxosToUse[i].vout) {
utxosToUse[i] = utxosToUse[i].copyWith(
address: output["scriptPubKey"]?["addresses"]?[0] as String? ??
output["scriptPubKey"]["address"] as String,
);
}
}
}
signingData.add(
SigningData(
derivePathType: DerivePathType.bip44,
utxo: utxosToUse[i],
),
);
}
Map<DerivePathType, Map<String, dynamic>> receiveDerivations = {};
Map<DerivePathType, Map<String, dynamic>> changeDerivations = {};
for (final sd in signingData) {
String? pubKey;
String? wif;
// fetch receiving derivations if null
receiveDerivations[sd.derivePathType] ??= Map<String, dynamic>.from(
jsonDecode((await _secureStore.read(
key: "${walletId}_receiveDerivations",
)) ??
"{}") as Map,
);
dynamic receiveDerivation;
for (int j = 0;
j < receiveDerivations[sd.derivePathType]!.length &&
receiveDerivation == null;
j++) {
if (receiveDerivations[sd.derivePathType]!["$j"]["address"] ==
sd.utxo.address!) {
receiveDerivation = receiveDerivations[sd.derivePathType]!["$j"];
}
}
if (receiveDerivation != null) {
pubKey = receiveDerivation["publicKey"] as String;
wif = receiveDerivation["wif"] as String;
} else {
// fetch change derivations if null
changeDerivations[sd.derivePathType] ??= Map<String, dynamic>.from(
jsonDecode((await _secureStore.read(
key: "${walletId}_changeDerivations",
)) ??
"{}") as Map,
);
dynamic changeDerivation;
for (int j = 0;
j < changeDerivations[sd.derivePathType]!.length &&
changeDerivation == null;
j++) {
if (changeDerivations[sd.derivePathType]!["$j"]["address"] ==
sd.utxo.address!) {
changeDerivation = changeDerivations[sd.derivePathType]!["$j"];
}
}
if (changeDerivation != null) {
pubKey = changeDerivation["publicKey"] as String;
wif = changeDerivation["wif"] as String;
}
}
if (wif == null || pubKey == null) {
final address = await db.getAddress(walletId, sd.utxo.address!);
if (address?.derivationPath != null) {
final node = await Bip32Utils.getBip32Node(
(await mnemonicString)!,
(await mnemonicPassphrase)!,
_network,
address!.derivationPath!.value,
);
wif = node.toWIF();
pubKey = Format.uint8listToString(node.publicKey);
}
}
if (wif != null && pubKey != null) {
final PaymentData data;
final Uint8List? redeemScript;
switch (sd.derivePathType) {
case DerivePathType.bip44:
data = P2PKH(
data: PaymentData(
pubkey: Format.stringToUint8List(pubKey),
),
network: _network,
).data;
redeemScript = null;
break;
default:
throw Exception("DerivePathType unsupported");
}
final keyPair = ECPair.fromWIF(
wif,
network: _network,
);
sd.redeemScript = redeemScript;
sd.output = data.output;
sd.keyPair = keyPair;
}
}
return signingData;
} catch (e, s) {
Logging.instance
.log("fetchBuildTxData() threw: $e,\n$s", level: LogLevel.Error);
rethrow;
}
}
/// Builds and signs a transaction
Future<Map<String, dynamic>> buildTransaction({
required List<SigningData> 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 < utxoSigningData.length; i++) {
final txid = utxoSigningData[i].utxo.txid;
txb.addInput(
txid,
utxoSigningData[i].utxo.vout,
null,
utxoSigningData[i].output!,
);
}
// 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 < utxoSigningData.length; i++) {
txb.sign(
vin: i,
keyPair: utxoSigningData[i].keyPair!,
witnessValue: utxoSigningData[i].utxo.value,
redeemScript: utxoSigningData[i].redeemScript,
);
}
} 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> 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());
}
}
@override
Future<void> initializeNew() async {
Logging.instance
.log("Generating new ${coin.prettyName} wallet.", level: LogLevel.Info);
if (getCachedId() != null) {
throw Exception(
"Attempted to initialize a new wallet using an existing wallet ID!");
}
await _prefs.init();
try {
await _generateNewWallet();
} catch (e, s) {
Logging.instance.log("Exception rethrown from initializeNew(): $e\n$s",
level: LogLevel.Fatal);
rethrow;
}
await Future.wait([
updateCachedId(walletId),
updateCachedIsFavorite(false),
]);
}
@override
Future<void> initializeExisting() async {
Logging.instance.log(
"initializeExisting() $_walletId ${coin.prettyName} wallet.",
level: LogLevel.Info);
if (getCachedId() == null) {
throw Exception(
"Attempted to initialize an existing wallet using an unknown wallet ID!");
}
await _prefs.init();
// await checkChangeAddressForTransactions();
// await checkReceivingAddressForTransactions();
}
Future<bool> refreshIfThereIsNewData() async {
if (longMutex) return false;
if (_hasCalledExit) return false;
Logging.instance
.log("$walletName refreshIfThereIsNewData", level: LogLevel.Info);
try {
bool needsRefresh = false;
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);
int confirmations = txn["confirmations"] as int? ?? 0;
bool isUnconfirmed = confirmations < MINIMUM_CONFIRMATIONS;
if (!isUnconfirmed) {
needsRefresh = true;
break;
}
}
if (!needsRefresh) {
final allOwnAddresses = await _fetchAllOwnAddresses();
List<Map<String, dynamic>> allTxs = await _fetchHistory(
allOwnAddresses.map((e) => e.value).toList(growable: false));
for (Map<String, dynamic> transaction in allTxs) {
final txid = transaction['tx_hash'] as String;
if ((await db
.getTransactions(walletId)
.filter()
.txidMatches(txid)
.findFirst()) ==
null) {
Logging.instance.log(
" txid not found in address history already ${transaction['tx_hash']}",
level: LogLevel.Info);
needsRefresh = true;
break;
}
}
}
return needsRefresh;
} catch (e, s) {
Logging.instance.log(
"Exception caught in refreshIfThereIsNewData: $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<void> getAllTxsToWatch() async {
if (_hasCalledExit) return;
Logging.instance.log("$walletName periodic", level: LogLevel.Info);
List<isar_models.Transaction> unconfirmedTxnsToNotifyPending = [];
List<isar_models.Transaction> unconfirmedTxnsToNotifyConfirmed = [];
final currentChainHeight = await chainHeight;
final txTxns = await db
.getTransactions(walletId)
.filter()
.isLelantusIsNull()
.or()
.isLelantusEqualTo(false)
.findAll();
final ltxTxns = await db
.getTransactions(walletId)
.filter()
.isLelantusEqualTo(true)
.findAll();
for (isar_models.Transaction tx in txTxns) {
isar_models.Transaction? lTx;
try {
lTx = ltxTxns.firstWhere((e) => e.txid == tx.txid);
} catch (_) {
lTx = null;
}
if (tx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) {
if (txTracker.wasNotifiedPending(tx.txid) &&
!txTracker.wasNotifiedConfirmed(tx.txid)) {
// get all transactions that were notified as pending but not as confirmed
unconfirmedTxnsToNotifyConfirmed.add(tx);
}
if (lTx != null &&
(lTx.inputs.isEmpty || lTx.inputs.first.txid.isEmpty) &&
lTx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) ==
false &&
tx.type == isar_models.TransactionType.incoming) {
// If this is a received that is past 1 or more confirmations and has not been minted,
if (!txTracker.wasNotifiedPending(tx.txid)) {
unconfirmedTxnsToNotifyPending.add(tx);
}
}
} else {
if (!txTracker.wasNotifiedPending(tx.txid)) {
// get all transactions that were not notified as pending yet
unconfirmedTxnsToNotifyPending.add(tx);
}
}
}
for (isar_models.Transaction tx in txTxns) {
if (!tx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) &&
tx.inputs.first.txid.isNotEmpty) {
// Get all normal txs that are at 0 confirmations
unconfirmedTxnsToNotifyPending
.removeWhere((e) => e.txid == tx.inputs.first.txid);
Logging.instance.log("removed tx: ${tx.txid}", level: LogLevel.Info);
}
}
for (isar_models.Transaction lTX in ltxTxns) {
isar_models.Transaction? tx;
try {
tx = ltxTxns.firstWhere((e) => e.txid == lTX.txid);
} catch (_) {
tx = null;
}
if (tx == null) {
// if this is a ltx transaction that is unconfirmed and not represented in the normal transaction set.
if (!lTX.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) {
if (!txTracker.wasNotifiedPending(lTX.txid)) {
unconfirmedTxnsToNotifyPending.add(lTX);
}
} else {
if (txTracker.wasNotifiedPending(lTX.txid) &&
!txTracker.wasNotifiedConfirmed(lTX.txid)) {
unconfirmedTxnsToNotifyConfirmed.add(lTX);
}
}
}
}
Logging.instance.log(
"unconfirmedTxnsToNotifyPending $unconfirmedTxnsToNotifyPending",
level: LogLevel.Info);
Logging.instance.log(
"unconfirmedTxnsToNotifyConfirmed $unconfirmedTxnsToNotifyConfirmed",
level: LogLevel.Info);
for (final tx in unconfirmedTxnsToNotifyPending) {
final confirmations = tx.getConfirmations(currentChainHeight);
switch (tx.type) {
case isar_models.TransactionType.incoming:
unawaited(
NotificationApi.showNotification(
title: "Incoming transaction",
body: walletName,
walletId: walletId,
iconAssetName: Assets.svg.iconFor(coin: coin),
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
shouldWatchForUpdates: confirmations < MINIMUM_CONFIRMATIONS,
coinName: coin.name,
txid: tx.txid,
confirmations: confirmations,
requiredConfirmations: MINIMUM_CONFIRMATIONS,
),
);
await txTracker.addNotifiedPending(tx.txid);
break;
case isar_models.TransactionType.outgoing:
unawaited(
NotificationApi.showNotification(
title: tx.subType == isar_models.TransactionSubType.mint
? "Anonymizing"
: "Outgoing transaction",
body: walletName,
walletId: walletId,
iconAssetName: Assets.svg.iconFor(coin: coin),
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
shouldWatchForUpdates: confirmations < MINIMUM_CONFIRMATIONS,
coinName: coin.name,
txid: tx.txid,
confirmations: confirmations,
requiredConfirmations: MINIMUM_CONFIRMATIONS,
),
);
await txTracker.addNotifiedPending(tx.txid);
break;
default:
break;
}
}
for (final tx in unconfirmedTxnsToNotifyConfirmed) {
if (tx.type == isar_models.TransactionType.incoming) {
unawaited(
NotificationApi.showNotification(
title: "Incoming transaction confirmed",
body: walletName,
walletId: walletId,
iconAssetName: Assets.svg.iconFor(coin: coin),
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
shouldWatchForUpdates: false,
coinName: coin.name,
),
);
await txTracker.addNotifiedConfirmed(tx.txid);
} else if (tx.type == isar_models.TransactionType.outgoing &&
tx.subType == isar_models.TransactionSubType.join) {
unawaited(
NotificationApi.showNotification(
title: tx.subType ==
isar_models.TransactionSubType.mint // redundant check?
? "Anonymized"
: "Outgoing transaction confirmed",
body: walletName,
walletId: walletId,
iconAssetName: Assets.svg.iconFor(coin: coin),
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
shouldWatchForUpdates: false,
coinName: coin.name,
),
);
await txTracker.addNotifiedConfirmed(tx.txid);
}
}
}
/// Generates initial wallet values such as mnemonic, chain (receive/change) arrays and indexes.
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.firo:
if (features['genesis_hash'] != GENESIS_HASH_MAINNET) {
throw Exception("genesis hash does not match main net!");
}
break;
case Coin.firoTestNet:
if (features['genesis_hash'] != GENESIS_HASH_TESTNET) {
throw Exception("genesis hash does not match test net!");
}
break;
default:
throw Exception(
"Attempted to generate a FiroWallet using a non firo coin type: ${coin.name}");
}
} catch (e, s) {
Logging.instance.log("$e/n$s", level: LogLevel.Info);
}
}
// this should never fail as overwriting a mnemonic is big bad
if ((await mnemonicString) != null || (await mnemonicPassphrase) != null) {
longMutex = false;
throw Exception("Attempted to overwrite mnemonic on initialize new!");
}
await _secureStore.write(
key: '${_walletId}_mnemonic',
value: bip39.generateMnemonic(strength: 256));
await _secureStore.write(
key: '${_walletId}_mnemonicPassphrase',
value: "",
);
await firoUpdateJIndex(<dynamic>[]);
// Generate and add addresses to relevant arrays
final initialReceivingAddress = await _generateAddressForChain(0, 0);
final initialChangeAddress = await _generateAddressForChain(1, 0);
await db.putAddresses([
initialReceivingAddress,
initialChangeAddress,
]);
}
bool refreshMutex = false;
@override
bool get isRefreshing => refreshMutex;
/// Refreshes display data for the wallet
@override
Future<void> refresh() async {
if (refreshMutex) {
Logging.instance.log("$walletId $walletName refreshMutex denied",
level: LogLevel.Info);
return;
} else {
refreshMutex = true;
}
Logging.instance
.log("PROCESSORS ${Platform.numberOfProcessors}", level: LogLevel.Info);
try {
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.syncing,
walletId,
coin,
),
);
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.0, walletId));
final receiveDerivationsString =
await _secureStore.read(key: "${walletId}_receiveDerivations");
if (receiveDerivationsString == null ||
receiveDerivationsString == "{}") {
GlobalEventBus.instance
.fire(RefreshPercentChangedEvent(0.05, walletId));
final mnemonic = await mnemonicString;
final mnemonicPassphrase =
await _secureStore.read(key: '${_walletId}_mnemonicPassphrase');
if (mnemonicPassphrase == null) {
Logging.instance.log(
"Exception in _generateAddressForChain: mnemonic passphrase null, possible migration issue; if using internal builds, delete wallet and restore from seed, if using a release build, please file bug report",
level: LogLevel.Error);
}
await fillAddresses(
mnemonic!,
mnemonicPassphrase!,
numberOfThreads: Platform.numberOfProcessors - isolates.length - 1,
);
}
await checkReceivingAddressForTransactions();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.1, walletId));
await _refreshUTXOs();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.2, walletId));
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.25, walletId));
await _refreshTransactions();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.35, walletId));
final feeObj = _getFees();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.50, walletId));
_feeObject = Future(() => feeObj);
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.60, walletId));
final lelantusCoins = getLelantusCoinMap();
Logging.instance.log("_lelantus_coins at refresh: $lelantusCoins",
level: LogLevel.Warning, printFullLength: true);
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.70, walletId));
await _refreshLelantusData();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.80, walletId));
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.90, walletId));
await _refreshBalance();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.95, walletId));
await getAllTxsToWatch();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(1.0, walletId));
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.synced,
walletId,
coin,
),
);
refreshMutex = false;
if (isActive || shouldAutoSync) {
timer ??= Timer.periodic(const Duration(seconds: 30), (timer) async {
bool shouldNotify = await refreshIfThereIsNewData();
if (shouldNotify) {
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.Warning);
}
}
Future<int> _fetchMaxFee() async {
final balance = availablePrivateBalance();
int spendAmount =
(balance.decimal * Decimal.fromInt(Constants.satsPerCoin(coin)))
.toBigInt()
.toInt();
int fee = await estimateJoinSplitFee(spendAmount);
return fee;
}
Future<List<DartLelantusEntry>> _getLelantusEntry() async {
final _mnemonic = await mnemonicString;
final _mnemonicPassphrase = await mnemonicPassphrase;
if (_mnemonicPassphrase == null) {
Logging.instance.log(
"Exception in _getLelantusEntry: mnemonic passphrase null, possible migration issue; if using internal builds, delete wallet and restore from seed, if using a release build, please file bug report",
level: LogLevel.Error);
}
final List<LelantusCoin> lelantusCoins = await _getUnspentCoins();
final root = await Bip32Utils.getBip32Root(
_mnemonic!,
_mnemonicPassphrase!,
_network,
);
final waitLelantusEntries = lelantusCoins.map((coin) async {
final derivePath = constructDerivePath(
networkWIF: _network.wif,
chain: MINT_INDEX,
index: coin.index,
);
final keyPair = await Bip32Utils.getBip32NodeFromRoot(root, derivePath);
if (keyPair.privateKey == null) {
Logging.instance.log("error bad key", level: LogLevel.Error);
return DartLelantusEntry(1, 0, 0, 0, 0, '');
}
final String privateKey = Format.uint8listToString(keyPair.privateKey!);
return DartLelantusEntry(coin.isUsed ? 1 : 0, 0, coin.anonymitySetId,
coin.value, coin.index, privateKey);
}).toList();
final lelantusEntries = await Future.wait(waitLelantusEntries);
if (lelantusEntries.isNotEmpty) {
lelantusEntries.removeWhere((element) => element.amount == 0);
}
return lelantusEntries;
}
List<Map<dynamic, LelantusCoin>> getLelantusCoinMap() {
final _l = firoGetLelantusCoins();
final List<Map<dynamic, LelantusCoin>> lelantusCoins = [];
for (var el in _l ?? []) {
lelantusCoins.add({el.keys.first: el.values.first as LelantusCoin});
}
return lelantusCoins;
}
Future<List<LelantusCoin>> _getUnspentCoins() async {
final List<Map<dynamic, LelantusCoin>> lelantusCoins = getLelantusCoinMap();
if (lelantusCoins.isNotEmpty) {
lelantusCoins.removeWhere((element) =>
element.values.any((elementCoin) => elementCoin.value == 0));
}
final jindexes = firoGetJIndex();
final transactions = await _txnData;
final lelantusTransactionsd = await db
.getTransactions(walletId)
.filter()
.isLelantusEqualTo(true)
.findAll();
List<LelantusCoin> coins = [];
List<LelantusCoin> lelantusCoinsList =
lelantusCoins.fold(<LelantusCoin>[], (previousValue, element) {
previousValue.add(element.values.first);
return previousValue;
});
final currentChainHeight = await chainHeight;
for (int i = 0; i < lelantusCoinsList.length; i++) {
// Logging.instance.log("lelantusCoinsList[$i]: ${lelantusCoinsList[i]}");
final txn = await cachedElectrumXClient.getTransaction(
txHash: lelantusCoinsList[i].txId,
verbose: true,
coin: coin,
);
final confirmations = txn["confirmations"];
bool isUnconfirmed = confirmations is int && confirmations < 1;
if (!jindexes!.contains(lelantusCoinsList[i].index) &&
transactions
.where((e) => e.txid == lelantusCoinsList[i].txId)
.isEmpty &&
!(lelantusTransactionsd
.where((e) => e.txid == lelantusCoinsList[i].txId)
.isNotEmpty &&
lelantusTransactionsd
.where((e) => e.txid == lelantusCoinsList[i].txId)
.first
.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS))) {
isUnconfirmed = true;
}
// TODO: optimize the following
if ((transactions
.where((e) => e.txid == lelantusCoinsList[i].txId)
.isNotEmpty &&
!transactions
.where((e) => e.txid == lelantusCoinsList[i].txId)
.first
.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) ||
(lelantusTransactionsd
.where((e) => e.txid == lelantusCoinsList[i].txId)
.isNotEmpty &&
!lelantusTransactionsd
.where((e) => e.txid == lelantusCoinsList[i].txId)
.first
.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS))) {
continue;
}
if (!lelantusCoinsList[i].isUsed &&
lelantusCoinsList[i].anonymitySetId != ANONYMITY_SET_EMPTY_ID &&
!isUnconfirmed) {
coins.add(lelantusCoinsList[i]);
}
}
return coins;
}
// index 0 and 1 for the funds available to spend.
// index 2 and 3 for all the funds in the wallet (including the undependable ones)
// Future<List<Decimal>> _refreshBalance() async {
Future<void> _refreshBalance() async {
try {
final utxosUpdateFuture = _refreshUTXOs();
final List<Map<dynamic, LelantusCoin>> lelantusCoins =
getLelantusCoinMap();
if (lelantusCoins.isNotEmpty) {
lelantusCoins.removeWhere((element) =>
element.values.any((elementCoin) => elementCoin.value == 0));
}
final data = await _txnData;
final lData = await db
.getTransactions(walletId)
.filter()
.isLelantusEqualTo(true)
.findAll();
final currentChainHeight = await chainHeight;
final jindexes = firoGetJIndex();
int intLelantusBalance = 0;
int unconfirmedLelantusBalance = 0;
for (var element in lelantusCoins) {
element.forEach((key, value) {
isar_models.Transaction? tx;
try {
tx == data.firstWhere((e) => e.txid == value.txId);
} catch (_) {
tx = null;
}
isar_models.Transaction? ltx;
try {
ltx = lData.firstWhere((e) => e.txid == value.txId);
} catch (_) {
ltx = null;
}
// Logging.instance.log("$value $tx $ltx");
if (!jindexes!.contains(value.index) && tx == null) {
if (!value.isUsed &&
ltx != null &&
ltx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) {
// mint tx, add value to balance
intLelantusBalance += value.value;
} /* else {
// This coin is not confirmed and may be replaced
}*/
} else if (jindexes.contains(value.index) &&
tx == null &&
!value.isUsed &&
ltx != null &&
!ltx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) {
unconfirmedLelantusBalance += value.value;
} else if (jindexes.contains(value.index) && !value.isUsed) {
intLelantusBalance += value.value;
} else if (!value.isUsed &&
(tx == null
? true
: tx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) !=
false)) {
intLelantusBalance += value.value;
} else if (tx != null &&
tx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) ==
false) {
unconfirmedLelantusBalance += value.value;
}
});
}
_balancePrivate = Balance(
total: Amount(
rawValue:
BigInt.from(intLelantusBalance + unconfirmedLelantusBalance),
fractionDigits: coin.decimals,
),
spendable: Amount(
rawValue: BigInt.from(intLelantusBalance),
fractionDigits: coin.decimals,
),
blockedTotal: Amount(
rawValue: BigInt.zero,
fractionDigits: coin.decimals,
),
pendingSpendable: Amount(
rawValue: BigInt.from(unconfirmedLelantusBalance),
fractionDigits: coin.decimals,
),
);
await updateCachedBalanceSecondary(_balancePrivate!);
// wait for updated uxtos to get updated public balance
await utxosUpdateFuture;
} catch (e, s) {
Logging.instance.log("Exception rethrown in getFullBalance(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<void> anonymizeAllPublicFunds() async {
try {
var mintResult = await _mintSelection();
if (mintResult.isEmpty) {
Logging.instance.log("nothing to mint", level: LogLevel.Info);
return;
}
await _submitLelantusToNetwork(mintResult);
unawaited(refresh());
} catch (e, s) {
Logging.instance.log(
"Exception caught in anonymizeAllPublicFunds(): $e\n$s",
level: LogLevel.Warning);
rethrow;
}
}
/// Returns the mint transaction hex to mint all of the available funds.
Future<Map<String, dynamic>> _mintSelection() async {
final currentChainHeight = await chainHeight;
final List<isar_models.UTXO> availableOutputs = await utxos;
final List<isar_models.UTXO?> spendableOutputs = [];
// Build list of spendable outputs and totaling their satoshi amount
for (var i = 0; i < availableOutputs.length; i++) {
if (availableOutputs[i].isBlocked == false &&
availableOutputs[i]
.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) ==
true &&
!(availableOutputs[i].isCoinbase &&
availableOutputs[i].getConfirmations(currentChainHeight) <=
101)) {
spendableOutputs.add(availableOutputs[i]);
}
}
final List<Map<dynamic, LelantusCoin>> lelantusCoins = getLelantusCoinMap();
if (lelantusCoins.isNotEmpty) {
lelantusCoins.removeWhere((element) =>
element.values.any((elementCoin) => elementCoin.value == 0));
}
final data = await _txnData;
for (final value in data) {
if (value.inputs.isNotEmpty) {
for (var element in value.inputs) {
if (lelantusCoins
.any((element) => element.keys.contains(value.txid)) &&
spendableOutputs.firstWhere(
(output) => output?.txid == element.txid,
orElse: () => null) !=
null) {
spendableOutputs
.removeWhere((output) => output!.txid == element.txid);
}
}
}
}
// If there is no Utxos to mint then stop the function.
if (spendableOutputs.isEmpty) {
Logging.instance.log("_mintSelection(): No spendable outputs found",
level: LogLevel.Info);
return {};
}
int satoshisBeingUsed = 0;
List<isar_models.UTXO> utxoObjectsToUse = [];
for (var i = 0; i < spendableOutputs.length; i++) {
final spendable = spendableOutputs[i];
if (spendable != null) {
utxoObjectsToUse.add(spendable);
satoshisBeingUsed += spendable.value;
}
}
var mintsWithoutFee = await createMintsFromAmount(satoshisBeingUsed);
var tmpTx = await buildMintTransaction(
utxoObjectsToUse, satoshisBeingUsed, mintsWithoutFee);
int vSize = (tmpTx['transaction'] as Transaction).virtualSize();
final Decimal dvSize = Decimal.fromInt(vSize);
final feesObject = await fees;
final Decimal fastFee = Amount(
rawValue: BigInt.from(feesObject.fast),
fractionDigits: coin.decimals,
).decimal;
int firoFee =
(dvSize * fastFee * Decimal.fromInt(100000)).toDouble().ceil();
// int firoFee = (vSize * feesObject.fast * (1 / 1000.0) * 100000000).ceil();
if (firoFee < vSize) {
firoFee = vSize + 1;
}
firoFee = firoFee + 10;
int satoshiAmountToSend = satoshisBeingUsed - firoFee;
var mintsWithFee = await createMintsFromAmount(satoshiAmountToSend);
Map<String, dynamic> transaction = await buildMintTransaction(
utxoObjectsToUse, satoshiAmountToSend, mintsWithFee);
transaction['transaction'] = "";
Logging.instance.log(transaction.toString(), level: LogLevel.Info);
Logging.instance.log(transaction['txHex'], level: LogLevel.Info);
return transaction;
}
Future<List<Map<String, dynamic>>> createMintsFromAmount(int total) async {
var tmpTotal = total;
var index = 1;
var mints = <Map<String, dynamic>>[];
final nextFreeMintIndex = firoGetMintIndex()!;
while (tmpTotal > 0) {
final mintValue = min(tmpTotal, MINT_LIMIT);
final mint = await _getMintHex(
mintValue,
nextFreeMintIndex + index,
);
mints.add({
"value": mintValue,
"script": mint,
"index": nextFreeMintIndex + index,
"publicCoin": "",
});
tmpTotal = tmpTotal - MINT_LIMIT;
index++;
}
return mints;
}
/// returns a valid txid if successful
Future<String> submitHexToNetwork(String hex) async {
try {
final txid = await electrumXClient.broadcastTransaction(rawTx: hex);
return txid;
} catch (e, s) {
Logging.instance.log(
"Caught exception in submitHexToNetwork(\"$hex\"): $e $s",
printFullLength: true,
level: LogLevel.Info);
// return an invalid tx
return "transaction submission failed";
}
}
/// Builds and signs a transaction
Future<Map<String, dynamic>> buildMintTransaction(
List<isar_models.UTXO> utxosToUse,
int satoshisPerRecipient,
List<Map<String, dynamic>> mintsMap) async {
//todo: check if print needed
// debugPrint(utxosToUse.toString());
List<String> addressesToDerive = [];
// Populating the addresses to derive
for (var i = 0; i < utxosToUse.length; i++) {
final txid = utxosToUse[i].txid;
final outputIndex = utxosToUse[i].vout;
// txid may not work for this as txid may not always be the same as tx_hash?
final tx = await cachedElectrumXClient.getTransaction(
txHash: txid,
verbose: true,
coin: coin,
);
final vouts = tx["vout"] as List?;
if (vouts != null && outputIndex < vouts.length) {
final address =
vouts[outputIndex]["scriptPubKey"]["addresses"][0] as String?;
if (address != null) {
addressesToDerive.add(address);
}
}
}
List<ECPair> elipticCurvePairArray = [];
List<Uint8List> outputDataArray = [];
final receiveDerivationsString =
await _secureStore.read(key: "${walletId}_receiveDerivations");
final changeDerivationsString =
await _secureStore.read(key: "${walletId}_changeDerivations");
final receiveDerivations = Map<String, dynamic>.from(
jsonDecode(receiveDerivationsString ?? "{}") as Map);
final changeDerivations = Map<String, dynamic>.from(
jsonDecode(changeDerivationsString ?? "{}") as Map);
for (var i = 0; i < addressesToDerive.length; i++) {
final addressToCheckFor = addressesToDerive[i];
for (var i = 0; i < receiveDerivations.length; i++) {
final receive = receiveDerivations["$i"];
final change = changeDerivations["$i"];
if (receive['address'] == addressToCheckFor) {
Logging.instance
.log('Receiving found on loop $i', level: LogLevel.Info);
// Logging.instance.log(
// 'decoded receive[\'wif\'] version: ${wif.decode(receive['wif'] as String)}, _network: $_network');
elipticCurvePairArray
.add(ECPair.fromWIF(receive['wif'] as String, network: _network));
outputDataArray.add(P2PKH(
network: _network,
data: PaymentData(
pubkey: Format.stringToUint8List(
receive['publicKey'] as String)))
.data
.output!);
break;
}
if (change['address'] == addressToCheckFor) {
Logging.instance.log('Change found on loop $i', level: LogLevel.Info);
// Logging.instance.log(
// 'decoded change[\'wif\'] version: ${wif.decode(change['wif'] as String)}, _network: $_network');
elipticCurvePairArray
.add(ECPair.fromWIF(change['wif'] as String, network: _network));
outputDataArray.add(P2PKH(
network: _network,
data: PaymentData(
pubkey: Format.stringToUint8List(
change['publicKey'] as String)))
.data
.output!);
break;
}
}
}
final txb = TransactionBuilder(network: _network);
txb.setVersion(2);
int height = await getBlockHead(electrumXClient);
txb.setLockTime(height);
int amount = 0;
// Add transaction inputs
for (var i = 0; i < utxosToUse.length; i++) {
txb.addInput(
utxosToUse[i].txid, utxosToUse[i].vout, null, outputDataArray[i]);
amount += utxosToUse[i].value;
}
final index = firoGetMintIndex()!;
Logging.instance.log("index of mint $index", level: LogLevel.Info);
for (var mintsElement in mintsMap) {
Logging.instance.log("using $mintsElement", level: LogLevel.Info);
Uint8List mintu8 =
Format.stringToUint8List(mintsElement['script'] as String);
txb.addOutput(mintu8, mintsElement['value'] as int);
}
for (var i = 0; i < utxosToUse.length; i++) {
txb.sign(
vin: i,
keyPair: elipticCurvePairArray[i],
witnessValue: utxosToUse[i].value,
);
}
var incomplete = txb.buildIncomplete();
var txId = incomplete.getId();
var txHex = incomplete.toHex();
int fee = amount - incomplete.outs[0].value!;
var builtHex = txb.build();
// return builtHex;
// final locale =
// Platform.isWindows ? "en_US" : await Devicelocale.currentLocale;
return {
"transaction": builtHex,
"txid": txId,
"txHex": txHex,
"value": amount - fee,
"fees": Amount(
rawValue: BigInt.from(fee),
fractionDigits: coin.decimals,
).decimal.toDouble(),
"publicCoin": "",
"height": height,
"txType": "Sent",
"confirmed_status": false,
"amount": Amount(
rawValue: BigInt.from(amount),
fractionDigits: coin.decimals,
).decimal.toDouble(),
"timestamp": DateTime.now().millisecondsSinceEpoch ~/ 1000,
"subType": "mint",
"mintsMap": mintsMap,
};
}
Future<void> _refreshLelantusData() async {
final List<Map<dynamic, LelantusCoin>> lelantusCoins = getLelantusCoinMap();
final jindexes = firoGetJIndex();
// Get all joinsplit transaction ids
final listLelantusTxData = await db
.getTransactions(walletId)
.filter()
.isLelantusEqualTo(true)
.findAll();
List<String> joinsplits = [];
for (final tx in listLelantusTxData) {
if (tx.subType == isar_models.TransactionSubType.join) {
joinsplits.add(tx.txid);
}
}
for (final coin
in lelantusCoins.fold(<LelantusCoin>[], (previousValue, element) {
(previousValue as List<LelantusCoin>).add(element.values.first);
return previousValue;
})) {
if (jindexes != null) {
if (jindexes.contains(coin.index) && !joinsplits.contains(coin.txId)) {
joinsplits.add(coin.txId);
}
}
}
Map<String, Tuple2<isar_models.Address?, isar_models.Transaction>> data =
{};
for (final entry in listLelantusTxData) {
data[entry.txid] = Tuple2(entry.address.value, entry);
}
// Grab the most recent information on all the joinsplits
final updatedJSplit = await getJMintTransactions(
cachedElectrumXClient,
joinsplits,
coin,
);
final currentChainHeight = await chainHeight;
// update all of joinsplits that are now confirmed.
for (final tx in updatedJSplit.entries) {
isar_models.Transaction? currentTx;
try {
currentTx =
listLelantusTxData.firstWhere((e) => e.txid == tx.value.txid);
} catch (_) {
currentTx = null;
}
if (currentTx == null) {
// this send was accidentally not included in the list
tx.value.isLelantus = true;
data[tx.value.txid] =
Tuple2(tx.value.address.value ?? tx.key, tx.value);
continue;
}
if (currentTx.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) !=
tx.value.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) {
tx.value.isLelantus = true;
data[tx.value.txid] =
Tuple2(tx.value.address.value ?? tx.key, tx.value);
}
}
// Logging.instance.log(txData.txChunks);
final listTxData = await _txnData;
for (final value in listTxData) {
// ignore change addresses
// bool hasAtLeastOneReceive = false;
// int howManyReceiveInputs = 0;
// for (var element in value.inputs) {
// if (listLelantusTxData.containsKey(element.txid) &&
// listLelantusTxData[element.txid]!.txType == "Received"
// // &&
// // listLelantusTxData[element.txid].subType != "mint"
// ) {
// // hasAtLeastOneReceive = true;
// // howManyReceiveInputs++;
// }
// }
if (value.type == isar_models.TransactionType.incoming &&
value.subType != isar_models.TransactionSubType.mint) {
// Every receive other than a mint should be shown. Mints will be collected and shown from the send side
value.isLelantus = true;
data[value.txid] = Tuple2(value.address.value, value);
} else if (value.type == isar_models.TransactionType.outgoing) {
// all sends should be shown, mints will be displayed correctly in the ui
value.isLelantus = true;
data[value.txid] = Tuple2(value.address.value, value);
}
}
// TODO: optimize this whole lelantus process
final List<Tuple2<isar_models.Transaction, isar_models.Address?>> txnsData =
[];
for (final value in data.values) {
// allow possible null address on mints as we don't display address
// this should normally never be null anyways but old (dbVersion up to 4)
// migrated transactions may not have had an address (full rescan should
// fix this)
isar_models.Address? transactionAddress;
try {
transactionAddress =
value.item2.subType == isar_models.TransactionSubType.mint
? value.item1
: value.item1!;
} catch (_) {
Logging.instance
.log("_refreshLelantusData value: $value", level: LogLevel.Fatal);
}
final outs =
value.item2.outputs.where((_) => true).toList(growable: false);
final ins = value.item2.inputs.where((_) => true).toList(growable: false);
txnsData.add(Tuple2(
value.item2.copyWith(inputs: ins, outputs: outs).item1,
transactionAddress));
}
await db.addNewTransactionData(txnsData, walletId);
// // update the _lelantusTransactionData
// final models.TransactionData newTxData =
// models.TransactionData.fromMap(listLelantusTxData);
// // Logging.instance.log(newTxData.txChunks);
// _lelantusTransactionData = Future(() => newTxData);
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'latest_lelantus_tx_model', value: newTxData);
// return newTxData;
}
Future<String> _getMintHex(int amount, int index) async {
final _mnemonic = await mnemonicString;
final _mnemonicPassphrase = await mnemonicPassphrase;
if (_mnemonicPassphrase == null) {
Logging.instance.log(
"Exception in _getMintHex: mnemonic passphrase null, possible migration issue; if using internal builds, delete wallet and restore from seed, if using a release build, please file bug report",
level: LogLevel.Error);
}
final derivePath = constructDerivePath(
networkWIF: _network.wif,
chain: MINT_INDEX,
index: index,
);
final mintKeyPair = await Bip32Utils.getBip32Node(
_mnemonic!,
_mnemonicPassphrase!,
_network,
derivePath,
);
String keydata = Format.uint8listToString(mintKeyPair.privateKey!);
String seedID = Format.uint8listToString(mintKeyPair.identifier);
String mintHex = await compute(
_getMintScriptWrapper,
Tuple5(
amount,
keydata,
index,
seedID,
coin == Coin.firoTestNet,
),
);
return mintHex;
}
Future<bool> _submitLelantusToNetwork(
Map<String, dynamic> transactionInfo) async {
final latestSetId = await getLatestSetId();
final txid = await submitHexToNetwork(transactionInfo['txHex'] as String);
// success if txid matches the generated txid
Logging.instance.log(
"_submitLelantusToNetwork txid: ${transactionInfo['txid']}",
level: LogLevel.Info);
if (txid == transactionInfo['txid']) {
final index = firoGetMintIndex();
final List<Map<dynamic, LelantusCoin>> lelantusCoins =
getLelantusCoinMap();
List<Map<dynamic, LelantusCoin>> coins;
if (lelantusCoins.isEmpty) {
coins = [];
} else {
coins = [...lelantusCoins];
}
if (transactionInfo['spendCoinIndexes'] != null) {
// This is a joinsplit
// Update all of the coins that have been spent.
for (final lCoinMap in coins) {
final lCoin = lCoinMap.values.first;
if ((transactionInfo['spendCoinIndexes'] as List<int>)
.contains(lCoin.index)) {
lCoinMap[lCoinMap.keys.first] = LelantusCoin(
lCoin.index,
lCoin.value,
lCoin.publicCoin,
lCoin.txId,
lCoin.anonymitySetId,
true);
}
}
// if a jmint was made add it to the unspent coin index
LelantusCoin jmint = LelantusCoin(
index!,
transactionInfo['jmintValue'] as int? ?? 0,
transactionInfo['publicCoin'] as String,
transactionInfo['txid'] as String,
latestSetId,
false);
if (jmint.value > 0) {
coins.add({jmint.txId: jmint});
final jindexes = firoGetJIndex()!;
jindexes.add(index);
await firoUpdateJIndex(jindexes);
await firoUpdateMintIndex(index + 1);
}
await firoUpdateLelantusCoins(coins);
final amount = Amount.fromDecimal(
Decimal.parse(transactionInfo["amount"].toString()),
fractionDigits: coin.decimals,
);
// add the send transaction
final transaction = isar_models.Transaction(
walletId: walletId,
txid: transactionInfo['txid'] as String,
timestamp: transactionInfo['timestamp'] as int? ??
(DateTime.now().millisecondsSinceEpoch ~/ 1000),
type: transactionInfo['txType'] == "Received"
? isar_models.TransactionType.incoming
: isar_models.TransactionType.outgoing,
subType: transactionInfo["subType"] == "mint"
? isar_models.TransactionSubType.mint
: transactionInfo["subType"] == "join"
? isar_models.TransactionSubType.join
: isar_models.TransactionSubType.none,
amount: amount.raw.toInt(),
amountString: amount.toJsonString(),
fee: Amount.fromDecimal(
Decimal.parse(transactionInfo["fees"].toString()),
fractionDigits: coin.decimals,
).raw.toInt(),
height: transactionInfo["height"] as int?,
isCancelled: false,
isLelantus: true,
slateId: null,
nonce: null,
otherData: transactionInfo["otherData"] as String?,
inputs: [],
outputs: [],
);
final transactionAddress = await db
.getAddresses(walletId)
.filter()
.valueEqualTo(transactionInfo["address"] as String)
.findFirst() ??
isar_models.Address(
walletId: walletId,
value: transactionInfo["address"] as String,
derivationIndex: -1,
derivationPath: null,
type: isar_models.AddressType.nonWallet,
subType: isar_models.AddressSubType.nonWallet,
publicKey: [],
);
final List<Tuple2<isar_models.Transaction, isar_models.Address?>>
txnsData = [];
txnsData.add(Tuple2(transaction, transactionAddress));
await db.addNewTransactionData(txnsData, walletId);
// final models.TransactionData newTxData =
// models.TransactionData.fromMap(transactions);
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'latest_lelantus_tx_model',
// value: newTxData);
// final ldata = DB.instance.get<dynamic>(
// boxName: walletId,
// key: 'latest_lelantus_tx_model') as models.TransactionData;
// _lelantusTransactionData = Future(() => ldata);
} else {
// This is a mint
Logging.instance.log("this is a mint", level: LogLevel.Info);
// TODO: transactionInfo['mintsMap']
for (final mintMap
in transactionInfo['mintsMap'] as List<Map<String, dynamic>>) {
final index = mintMap['index'] as int?;
LelantusCoin mint = LelantusCoin(
index!,
mintMap['value'] as int,
mintMap['publicCoin'] as String,
transactionInfo['txid'] as String,
latestSetId,
false,
);
if (mint.value > 0) {
coins.add({mint.txId: mint});
await firoUpdateMintIndex(index + 1);
}
}
// Logging.instance.log(coins);
await firoUpdateLelantusCoins(coins);
}
return true;
} else {
// Failed to send to network
return false;
}
}
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: Amount.fromDecimal(
fast,
fractionDigits: coin.decimals,
).raw.toInt(),
medium: Amount.fromDecimal(
medium,
fractionDigits: coin.decimals,
).raw.toInt(),
slow: Amount.fromDecimal(
slow,
fractionDigits: coin.decimals,
).raw.toInt(),
);
Logging.instance.log("fetched fees: $feeObject", level: LogLevel.Info);
return feeObject;
// final result = await electrumXClient.getFeeRate();
//
// final locale = await Devicelocale.currentLocale;
// final String fee =
// Format.satoshiAmountToPrettyString(result["rate"] as int, locale!);
//
// final fees = {
// "fast": fee,
// "average": fee,
// "slow": fee,
// };
// final FeeObject feeObject = FeeObject.fromJson(fees);
// return feeObject;
} catch (e) {
Logging.instance
.log("Exception rethrown from _getFees(): $e", level: LogLevel.Error);
rethrow;
}
}
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,
);
}
//TODO call get transaction and check each tx to see if it is a "received" tx?
Future<int> _getReceivedTxCount({required String address}) async {
try {
final scripthash = AddressUtils.convertToScriptHash(address, _network);
final transactions =
await electrumXClient.getHistory(scripthash: scripthash);
return transactions.length;
} catch (e) {
Logging.instance.log(
"Exception rethrown in _getReceivedTxCount(address: $address): $e",
level: LogLevel.Error);
rethrow;
}
}
Future<void> checkReceivingAddressForTransactions() async {
try {
final currentReceiving = await _currentReceivingAddress;
final int txCount =
await _getReceivedTxCount(address: currentReceiving.value);
Logging.instance.log(
'Number of txs for current receiving address $currentReceiving: $txCount',
level: LogLevel.Info);
if (txCount >= 1 || currentReceiving.derivationIndex < 0) {
// First increment the receiving index
final newReceivingIndex = currentReceiving.derivationIndex + 1;
// Use new index to derive a new receiving address
final newReceivingAddress = await _generateAddressForChain(
0,
newReceivingIndex,
);
final existing = await db
.getAddresses(walletId)
.filter()
.valueEqualTo(newReceivingAddress.value)
.findFirst();
if (existing == null) {
// Add that new change address
await db.putAddress(newReceivingAddress);
} else {
// we need to update the address
await db.updateAddress(existing, newReceivingAddress);
}
// keep checking until address with no tx history is set as current
await checkReceivingAddressForTransactions();
}
} on SocketException catch (se, s) {
Logging.instance.log(
"SocketException caught in checkReceivingAddressForTransactions(): $se\n$s",
level: LogLevel.Error);
return;
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from checkReceivingAddressForTransactions(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<void> checkChangeAddressForTransactions() async {
try {
final currentChange = await _currentChangeAddress;
final int txCount =
await _getReceivedTxCount(address: currentChange.value);
Logging.instance.log(
'Number of txs for current change address: $currentChange: $txCount',
level: LogLevel.Info);
if (txCount >= 1 || currentChange.derivationIndex < 0) {
// First increment the change index
final newChangeIndex = currentChange.derivationIndex + 1;
// Use new index to derive a new change address
final newChangeAddress = await _generateAddressForChain(
1,
newChangeIndex,
);
final existing = await db
.getAddresses(walletId)
.filter()
.valueEqualTo(newChangeAddress.value)
.findFirst();
if (existing == null) {
// Add that new change address
await db.putAddress(newChangeAddress);
} else {
// we need to update the address
await db.updateAddress(existing, newChangeAddress);
}
// keep checking until address with no tx history is set as current
await checkChangeAddressForTransactions();
}
} on SocketException catch (se, s) {
Logging.instance.log(
"SocketException caught in checkChangeAddressForTransactions(): $se\n$s",
level: LogLevel.Error);
return;
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from checkChangeAddressForTransactions(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<List<isar_models.Address>> _fetchAllOwnAddresses() async {
final allAddresses = await db
.getAddresses(walletId)
.filter()
.not()
.typeEqualTo(isar_models.AddressType.nonWallet)
.and()
.group((q) => q
.subTypeEqualTo(isar_models.AddressSubType.receiving)
.or()
.subTypeEqualTo(isar_models.AddressSubType.change))
.findAll();
// final List<String> allAddresses = [];
// final receivingAddresses =
// DB.instance.get<dynamic>(boxName: walletId, key: 'receivingAddresses')
// as List<dynamic>;
// final changeAddresses =
// DB.instance.get<dynamic>(boxName: walletId, key: 'changeAddresses')
// as List<dynamic>;
//
// for (var i = 0; i < receivingAddresses.length; i++) {
// allAddresses.add(receivingAddresses[i] as String);
// }
// for (var i = 0; i < changeAddresses.length; i++) {
// allAddresses.add(changeAddresses[i] as String);
// }
return allAddresses;
}
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 =
AddressUtils.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<void> _refreshTransactions() async {
final List<isar_models.Address> allAddresses =
await _fetchAllOwnAddresses();
final List<Map<String, dynamic>> allTxHashes =
await _fetchHistory(allAddresses.map((e) => e.value).toList());
List<Map<String, dynamic>> allTransactions = [];
final currentHeight = await chainHeight;
for (final txHash in allTxHashes) {
final storedTx = await db
.getTransactions(walletId)
.filter()
.txidEqualTo(txHash["tx_hash"] as String)
.findFirst();
if (storedTx == null ||
!storedTx.isConfirmed(currentHeight, MINIMUM_CONFIRMATIONS)) {
final tx = await cachedElectrumXClient.getTransaction(
txHash: txHash["tx_hash"] as String,
verbose: true,
coin: coin,
);
if (!_duplicateTxCheck(allTransactions, tx["txid"] as String)) {
tx["address"] = await db
.getAddresses(walletId)
.filter()
.valueEqualTo(txHash["address"] as String)
.findFirst();
tx["height"] = txHash["height"];
allTransactions.add(tx);
}
}
}
final List<Tuple2<isar_models.Transaction, isar_models.Address?>> txnsData =
[];
Set<String> changeAddresses = allAddresses
.where((e) => e.subType == isar_models.AddressSubType.change)
.map((e) => e.value)
.toSet();
for (final txObject in allTransactions) {
// Logging.instance.log(txObject);
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;
for (final input in txObject["vin"] as List) {
final address = input["address"] as String?;
if (address != null) {
sendersArray.add(address);
}
}
// Logging.instance.log("sendersArray: $sendersArray");
for (final output in txObject["vout"] as List) {
final address = output["scriptPubKey"]?["addresses"]?[0] as String? ??
output["scriptPubKey"]?["address"] as String?;
if (address != null) {
recipientsArray.add(address);
}
}
// Logging.instance.log("recipientsArray: $recipientsArray");
final foundInSenders =
allAddresses.any((element) => sendersArray.contains(element.value));
// Logging.instance.log("foundInSenders: $foundInSenders");
String outAddress = "";
int fees = 0;
// If txType = Sent, then calculate inputAmtSentFromWallet, calculate who received how much in aliens array (check outputs)
if (foundInSenders) {
int outAmount = 0;
int inAmount = 0;
bool nFeesUsed = false;
for (final input in txObject["vin"] as List) {
final nFees = input["nFees"];
if (nFees != null) {
nFeesUsed = true;
fees = (Decimal.parse(nFees.toString()) *
Decimal.fromInt(Constants.satsPerCoin(coin)))
.toBigInt()
.toInt();
}
final address = input["address"] as String?;
final value = input["valueSat"] as int?;
if (address != null && value != null) {
if (allAddresses.where((e) => e.value == address).isNotEmpty) {
inputAmtSentFromWallet += value;
}
}
if (value != null) {
inAmount += value;
}
}
for (final output in txObject["vout"] as List) {
final address = output["scriptPubKey"]?["addresses"]?[0] as String? ??
output["scriptPubKey"]?["address"] as String?;
final value = output["value"];
if (value != null) {
outAmount += (Decimal.parse(value.toString()) *
Decimal.fromInt(Constants.satsPerCoin(coin)))
.toBigInt()
.toInt();
if (address != null) {
if (changeAddresses.contains(address)) {
inputAmtSentFromWallet -= (Decimal.parse(value.toString()) *
Decimal.fromInt(Constants.satsPerCoin(coin)))
.toBigInt()
.toInt();
} else {
outAddress = address;
}
}
}
}
fees = nFeesUsed ? fees : inAmount - outAmount;
inputAmtSentFromWallet -= inAmount - outAmount;
} else {
for (final input in txObject["vin"] as List) {
final nFees = input["nFees"];
if (nFees != null) {
fees += (Decimal.parse(nFees.toString()) *
Decimal.fromInt(Constants.satsPerCoin(coin)))
.toBigInt()
.toInt();
}
}
for (final output in txObject["vout"] as List) {
final addresses = output["scriptPubKey"]["addresses"] as List?;
if (addresses != null && addresses.isNotEmpty) {
final address = addresses[0] as String;
final value = output["value"] ?? 0;
// Logging.instance.log(address + value.toString());
if (allAddresses.where((e) => e.value == address).isNotEmpty) {
outputAmtAddressedToWallet += (Decimal.parse(value.toString()) *
Decimal.fromInt(Constants.satsPerCoin(coin)))
.toBigInt()
.toInt();
outAddress = address;
}
}
}
}
isar_models.TransactionType type;
isar_models.TransactionSubType subType =
isar_models.TransactionSubType.none;
int amount;
if (foundInSenders) {
type = isar_models.TransactionType.outgoing;
amount = inputAmtSentFromWallet;
if (txObject["vout"][0]["scriptPubKey"]["type"] == "lelantusmint") {
subType = isar_models.TransactionSubType.mint;
}
} else {
type = isar_models.TransactionType.incoming;
amount = outputAmtAddressedToWallet;
}
final transactionAddress =
allAddresses.firstWhere((e) => e.value == outAddress,
orElse: () => isar_models.Address(
walletId: walletId,
value: outAddress,
derivationIndex: -1,
derivationPath: null,
type: isar_models.AddressType.nonWallet,
subType: isar_models.AddressSubType.nonWallet,
publicKey: [],
));
List<isar_models.Output> outs = [];
List<isar_models.Input> ins = [];
for (final json in txObject["vin"] as List) {
bool isCoinBase = json['coinbase'] != null;
final input = isar_models.Input(
txid: json['txid'] as String? ?? "",
vout: json['vout'] as int? ?? -1,
scriptSig: json['scriptSig']?['hex'] as String?,
scriptSigAsm: json['scriptSig']?['asm'] as String?,
isCoinbase: isCoinBase ? isCoinBase : json['is_coinbase'] as bool?,
sequence: json['sequence'] as int?,
innerRedeemScriptAsm: json['innerRedeemscriptAsm'] as String?,
);
ins.add(input);
}
for (final json in txObject["vout"] as List) {
final output = isar_models.Output(
scriptPubKey: json['scriptPubKey']?['hex'] as String?,
scriptPubKeyAsm: json['scriptPubKey']?['asm'] as String?,
scriptPubKeyType: json['scriptPubKey']?['type'] as String?,
scriptPubKeyAddress:
json["scriptPubKey"]?["addresses"]?[0] as String? ??
json['scriptPubKey']['type'] as String,
value: Amount.fromDecimal(
Decimal.parse(json["value"].toString()),
fractionDigits: coin.decimals,
).raw.toInt(),
);
outs.add(output);
}
final tx = isar_models.Transaction(
walletId: walletId,
txid: txObject["txid"] as String,
timestamp: txObject["blocktime"] as int? ??
(DateTime.now().millisecondsSinceEpoch ~/ 1000),
type: type,
subType: subType,
amount: amount,
amountString: Amount(
rawValue: BigInt.from(amount),
fractionDigits: Coin.firo.decimals,
).toJsonString(),
fee: fees,
height: txObject["height"] as int? ?? 0,
isCancelled: false,
isLelantus: false,
slateId: null,
otherData: null,
nonce: null,
inputs: ins,
outputs: outs,
);
txnsData.add(Tuple2(tx, transactionAddress));
}
await db.addNewTransactionData(txnsData, walletId);
// quick hack to notify manager to call notifyListeners if
// transactions changed
if (txnsData.isNotEmpty) {
GlobalEventBus.instance.fire(
UpdatedInBackgroundEvent(
"Transactions updated/added for: $walletId $walletName ",
walletId,
),
);
}
}
Future<void> _refreshUTXOs() async {
final 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 =
AddressUtils.convertToScriptHash(allAddresses[i].value, _network);
batches[batchNumber]!.addAll({
scripthash: [scripthash]
});
if (i % batchSizeMax == batchSizeMax - 1) {
batchNumber++;
}
}
for (int i = 0; i < batches.length; i++) {
final response =
await _electrumXClient.getBatchUTXOs(args: batches[i]!);
for (final entry in response.entries) {
if (entry.value.isNotEmpty) {
fetchedUtxoList.add(entry.value);
}
}
}
final currentChainHeight = await chainHeight;
final List<isar_models.UTXO> outputArray = [];
Amount satoshiBalanceTotal = Amount(
rawValue: BigInt.zero,
fractionDigits: coin.decimals,
);
Amount satoshiBalancePending = Amount(
rawValue: BigInt.zero,
fractionDigits: coin.decimals,
);
Amount satoshiBalanceSpendable = Amount(
rawValue: BigInt.zero,
fractionDigits: coin.decimals,
);
Amount satoshiBalanceBlocked = Amount(
rawValue: BigInt.zero,
fractionDigits: coin.decimals,
);
for (int i = 0; i < fetchedUtxoList.length; i++) {
for (int j = 0; j < fetchedUtxoList[i].length; j++) {
final txn = await cachedElectrumXClient.getTransaction(
txHash: fetchedUtxoList[i][j]["tx_hash"] as String,
verbose: true,
coin: coin,
);
// todo check here if we should mark as blocked
final utxo = isar_models.UTXO(
walletId: walletId,
txid: txn["txid"] as String,
vout: fetchedUtxoList[i][j]["tx_pos"] as int,
value: fetchedUtxoList[i][j]["value"] as int,
name: "",
isBlocked: false,
blockedReason: null,
isCoinbase: txn["is_coinbase"] as bool? ?? false,
blockHash: txn["blockhash"] as String?,
blockHeight: fetchedUtxoList[i][j]["height"] as int?,
blockTime: txn["blocktime"] as int?,
);
final utxoAmount = Amount(
rawValue: BigInt.from(utxo.value),
fractionDigits: coin.decimals,
);
satoshiBalanceTotal = satoshiBalanceTotal + utxoAmount;
if (utxo.isBlocked) {
satoshiBalanceBlocked = satoshiBalanceBlocked + utxoAmount;
} else {
if (utxo.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS)) {
satoshiBalanceSpendable = satoshiBalanceSpendable + utxoAmount;
} else {
satoshiBalancePending = satoshiBalancePending + utxoAmount;
}
}
outputArray.add(utxo);
}
}
Logging.instance
.log('Outputs fetched: $outputArray', level: LogLevel.Info);
// TODO move this out of here and into IDB
await db.isar.writeTxn(() async {
await db.isar.utxos.where().walletIdEqualTo(walletId).deleteAll();
await db.isar.utxos.putAll(outputArray);
});
// finally update public balance
_balance = Balance(
total: satoshiBalanceTotal,
spendable: satoshiBalanceSpendable,
blockedTotal: satoshiBalanceBlocked,
pendingSpendable: satoshiBalancePending,
);
await updateCachedBalance(_balance!);
} catch (e, s) {
Logging.instance
.log("Output fetch unsuccessful: $e\n$s", level: LogLevel.Error);
}
}
/// Returns the latest receiving/change (external/internal) address for the wallet depending on [chain]
/// [chain] - Use 0 for receiving (external), 1 for change (internal). Should not be any other value!
Future<String> _getCurrentAddressForChain(int chain) async {
final subType = chain == 0 // Here, we assume that chain == 1 if it isn't 0
? isar_models.AddressSubType.receiving
: isar_models.AddressSubType.change;
isar_models.Address? address = await db
.getAddresses(walletId)
.filter()
.typeEqualTo(isar_models.AddressType.p2pkh)
.subTypeEqualTo(subType)
.sortByDerivationIndexDesc()
.findFirst();
return address!.value;
}
Future<void> fillAddresses(
String suppliedMnemonic,
String mnemonicPassphrase, {
int perBatch = 50,
int numberOfThreads = 4,
}) async {
if (numberOfThreads <= 0) {
numberOfThreads = 1;
}
if (Platform.environment["FLUTTER_TEST"] == "true" || integrationTestFlag) {
perBatch = 10;
numberOfThreads = 4;
}
final receiveDerivationsString =
await _secureStore.read(key: "${walletId}_receiveDerivations");
final changeDerivationsString =
await _secureStore.read(key: "${walletId}_changeDerivations");
var receiveDerivations = Map<String, dynamic>.from(
jsonDecode(receiveDerivationsString ?? "{}") as Map);
var changeDerivations = Map<String, dynamic>.from(
jsonDecode(changeDerivationsString ?? "{}") as Map);
final int start = receiveDerivations.length;
List<ReceivePort> ports = List.empty(growable: true);
for (int i = 0; i < numberOfThreads; i++) {
ReceivePort receivePort = await getIsolate({
"function": "isolateDerive",
"mnemonic": suppliedMnemonic,
"mnemonicPassphrase": mnemonicPassphrase,
"from": start + i * perBatch,
"to": start + (i + 1) * perBatch,
"network": _network,
});
ports.add(receivePort);
}
for (int i = 0; i < numberOfThreads; i++) {
ReceivePort receivePort = ports.elementAt(i);
var message = await receivePort.first;
if (message is String) {
Logging.instance.log("this is a string", level: LogLevel.Error);
stop(receivePort);
throw Exception("isolateDerive isolate failed");
}
stop(receivePort);
Logging.instance.log('Closing isolateDerive!', level: LogLevel.Info);
receiveDerivations.addAll(message['receive'] as Map<String, dynamic>);
changeDerivations.addAll(message['change'] as Map<String, dynamic>);
}
Logging.instance.log("isolate derives", level: LogLevel.Info);
// Logging.instance.log(receiveDerivations);
// Logging.instance.log(changeDerivations);
final newReceiveDerivationsString = jsonEncode(receiveDerivations);
final newChangeDerivationsString = jsonEncode(changeDerivations);
await _secureStore.write(
key: "${walletId}_receiveDerivations",
value: newReceiveDerivationsString);
await _secureStore.write(
key: "${walletId}_changeDerivations",
value: newChangeDerivationsString);
}
/// Generates a new internal or external chain address for the wallet using a BIP84 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<isar_models.Address> _generateAddressForChain(
int chain, int index) async {
final _mnemonic = await mnemonicString;
final _mnemonicPassphrase = await mnemonicPassphrase;
if (_mnemonicPassphrase == null) {
Logging.instance.log(
"Exception in _generateAddressForChain: mnemonic passphrase null, possible migration issue; if using internal builds, delete wallet and restore from seed, if using a release build, please file bug report",
level: LogLevel.Error);
}
Map<String, dynamic>? derivations;
if (chain == 0) {
final receiveDerivationsString =
await _secureStore.read(key: "${walletId}_receiveDerivations");
derivations = Map<String, dynamic>.from(
jsonDecode(receiveDerivationsString ?? "{}") as Map);
} else if (chain == 1) {
final changeDerivationsString =
await _secureStore.read(key: "${walletId}_changeDerivations");
derivations = Map<String, dynamic>.from(
jsonDecode(changeDerivationsString ?? "{}") as Map);
}
final derivePath = constructDerivePath(
networkWIF: _network.wif,
chain: chain,
index: index,
);
if (derivations!.isNotEmpty) {
if (derivations["$index"] == null) {
await fillAddresses(
_mnemonic!,
_mnemonicPassphrase!,
numberOfThreads: Platform.numberOfProcessors - isolates.length - 1,
);
Logging.instance.log("calling _generateAddressForChain recursively",
level: LogLevel.Info);
return _generateAddressForChain(chain, index);
}
return isar_models.Address(
walletId: walletId,
value: derivations["$index"]['address'] as String,
publicKey: Format.stringToUint8List(
derivations["$index"]['publicKey'] as String),
type: isar_models.AddressType.p2pkh,
derivationIndex: index,
derivationPath: isar_models.DerivationPath()..value = derivePath,
subType: chain == 0
? isar_models.AddressSubType.receiving
: isar_models.AddressSubType.change,
);
} else {
final node = await Bip32Utils.getBip32Node(
_mnemonic!,
_mnemonicPassphrase!,
_network,
derivePath,
);
final address =
P2PKH(network: _network, data: PaymentData(pubkey: node.publicKey))
.data
.address!;
return isar_models.Address(
walletId: walletId,
value: address,
publicKey: node.publicKey,
type: isar_models.AddressType.p2pkh,
derivationIndex: index,
derivationPath: isar_models.DerivationPath()..value = derivePath,
subType: chain == 0
? isar_models.AddressSubType.receiving
: isar_models.AddressSubType.change,
);
}
}
// /// Takes in a list of isar_models.UTXOs and adds a name (dependent on object index within list)
// /// and checks for the txid associated with the utxo being blocked and marks it accordingly.
// /// Now also checks for output labeling.
// Future<void> _sortOutputs(List<isar_models.UTXO> utxos) async {
// final blockedHashArray =
// DB.instance.get<dynamic>(boxName: walletId, key: 'blocked_tx_hashes')
// as List<dynamic>?;
// final List<String> lst = [];
// if (blockedHashArray != null) {
// for (var hash in blockedHashArray) {
// lst.add(hash as String);
// }
// }
// final labels =
// DB.instance.get<dynamic>(boxName: walletId, key: 'labels') as Map? ??
// {};
//
// _outputsList = [];
//
// for (var i = 0; i < utxos.length; i++) {
// if (labels[utxos[i].txid] != null) {
// utxos[i].txName = labels[utxos[i].txid] as String? ?? "";
// } else {
// utxos[i].txName = 'Output #$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]);
// }
// }
// }
// }
@override
Future<void> fullRescan(
int maxUnusedAddressGap,
int maxNumberOfIndexesToCheck,
) async {
Logging.instance.log("Starting full rescan!", level: LogLevel.Info);
// timer?.cancel();
// for (final isolate in isolates.values) {
// isolate.kill(priority: Isolate.immediate);
// }
// isolates.clear();
longMutex = true;
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.syncing,
walletId,
coin,
),
);
// clear cache
await _cachedElectrumXClient.clearSharedTransactionCache(coin: coin);
// back up data
// await _rescanBackup();
// clear blockchain info
await db.deleteWalletBlockchainData(walletId);
await _deleteDerivations();
try {
final _mnemonic = await mnemonicString;
final _mnemonicPassphrase = await mnemonicPassphrase;
if (_mnemonicPassphrase == null) {
Logging.instance.log(
"Exception in fullRescan: mnemonic passphrase null, possible migration issue; if using internal builds, delete wallet and restore from seed, if using a release build, please file bug report",
level: LogLevel.Error);
}
await _recoverWalletFromBIP32SeedPhrase(
_mnemonic!,
_mnemonicPassphrase!,
maxUnusedAddressGap,
);
longMutex = false;
await refresh();
Logging.instance.log("Full rescan complete!", level: LogLevel.Info);
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.synced,
walletId,
coin,
),
);
} catch (e, s) {
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.unableToSync,
walletId,
coin,
),
);
// restore from backup
// await _rescanRestore();
longMutex = false;
Logging.instance.log("Exception rethrown from fullRescan(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<void> _deleteDerivations() async {
// P2PKH derivations
await _secureStore.delete(key: "${walletId}_receiveDerivations");
await _secureStore.delete(key: "${walletId}_changeDerivations");
}
// Future<void> _rescanBackup() async {
// Logging.instance.log("starting rescan backup", level: LogLevel.Info);
//
// // backup current and clear data
// final tempReceivingAddresses =
// DB.instance.get<dynamic>(boxName: walletId, key: 'receivingAddresses');
// await DB.instance.delete<dynamic>(
// key: 'receivingAddresses',
// boxName: walletId,
// );
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'receivingAddresses_BACKUP',
// value: tempReceivingAddresses);
//
// final tempChangeAddresses =
// DB.instance.get<dynamic>(boxName: walletId, key: 'changeAddresses');
// await DB.instance.delete<dynamic>(
// key: 'changeAddresses',
// boxName: walletId,
// );
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'changeAddresses_BACKUP',
// value: tempChangeAddresses);
//
// final tempReceivingIndex =
// DB.instance.get<dynamic>(boxName: walletId, key: 'receivingIndex');
// await DB.instance.delete<dynamic>(
// key: 'receivingIndex',
// boxName: walletId,
// );
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'receivingIndex_BACKUP',
// value: tempReceivingIndex);
//
// final tempChangeIndex =
// DB.instance.get<dynamic>(boxName: walletId, key: 'changeIndex');
// await DB.instance.delete<dynamic>(
// key: 'changeIndex',
// boxName: walletId,
// );
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'changeIndex_BACKUP', value: tempChangeIndex);
//
// final receiveDerivationsString =
// await _secureStore.read(key: "${walletId}_receiveDerivations");
// final changeDerivationsString =
// await _secureStore.read(key: "${walletId}_changeDerivations");
//
// await _secureStore.write(
// key: "${walletId}_receiveDerivations_BACKUP",
// value: receiveDerivationsString);
// await _secureStore.write(
// key: "${walletId}_changeDerivations_BACKUP",
// value: changeDerivationsString);
//
// await _secureStore.write(
// key: "${walletId}_receiveDerivations", value: null);
// await _secureStore.write(key: "${walletId}_changeDerivations", value: null);
//
// // back up but no need to delete
// final tempMintIndex =
// DB.instance.get<dynamic>(boxName: walletId, key: 'mintIndex');
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'mintIndex_BACKUP', value: tempMintIndex);
//
// final tempLelantusCoins =
// DB.instance.get<dynamic>(boxName: walletId, key: '_lelantus_coins');
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: '_lelantus_coins_BACKUP',
// value: tempLelantusCoins);
//
// final tempJIndex =
// DB.instance.get<dynamic>(boxName: walletId, key: 'jindex');
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'jindex_BACKUP', value: tempJIndex);
//
// final tempLelantusTxModel = DB.instance
// .get<dynamic>(boxName: walletId, key: 'latest_lelantus_tx_model');
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'latest_lelantus_tx_model_BACKUP',
// value: tempLelantusTxModel);
//
// Logging.instance.log("rescan backup complete", level: LogLevel.Info);
// }
//
// Future<void> _rescanRestore() async {
// Logging.instance.log("starting rescan restore", level: LogLevel.Info);
//
// // restore from backup
// final tempReceivingAddresses = DB.instance
// .get<dynamic>(boxName: walletId, key: 'receivingAddresses_BACKUP');
// final tempChangeAddresses = DB.instance
// .get<dynamic>(boxName: walletId, key: 'changeAddresses_BACKUP');
// final tempReceivingIndex = DB.instance
// .get<dynamic>(boxName: walletId, key: 'receivingIndex_BACKUP');
// final tempChangeIndex =
// DB.instance.get<dynamic>(boxName: walletId, key: 'changeIndex_BACKUP');
// final tempMintIndex =
// DB.instance.get<dynamic>(boxName: walletId, key: 'mintIndex_BACKUP');
// final tempLelantusCoins = DB.instance
// .get<dynamic>(boxName: walletId, key: '_lelantus_coins_BACKUP');
// final tempJIndex =
// DB.instance.get<dynamic>(boxName: walletId, key: 'jindex_BACKUP');
// final tempLelantusTxModel = DB.instance.get<dynamic>(
// boxName: walletId, key: 'latest_lelantus_tx_model_BACKUP');
//
// final receiveDerivationsString =
// await _secureStore.read(key: "${walletId}_receiveDerivations_BACKUP");
// final changeDerivationsString =
// await _secureStore.read(key: "${walletId}_changeDerivations_BACKUP");
//
// await _secureStore.write(
// key: "${walletId}_receiveDerivations", value: receiveDerivationsString);
// await _secureStore.write(
// key: "${walletId}_changeDerivations", value: changeDerivationsString);
//
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'receivingAddresses',
// value: tempReceivingAddresses);
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'changeAddresses', value: tempChangeAddresses);
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'receivingIndex', value: tempReceivingIndex);
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'changeIndex', value: tempChangeIndex);
// await DB.instance.put<dynamic>(
// boxName: walletId, key: 'mintIndex', value: tempMintIndex);
// await DB.instance.put<dynamic>(
// boxName: walletId, key: '_lelantus_coins', value: tempLelantusCoins);
// await DB.instance
// .put<dynamic>(boxName: walletId, key: 'jindex', value: tempJIndex);
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'latest_lelantus_tx_model',
// value: tempLelantusTxModel);
//
// Logging.instance.log("rescan restore complete", level: LogLevel.Info);
// }
/// wrapper for _recoverWalletFromBIP32SeedPhrase()
@override
Future<void> recoverFromMnemonic({
required String mnemonic,
String? mnemonicPassphrase,
required int maxUnusedAddressGap,
required int maxNumberOfIndexesToCheck,
required int height,
}) async {
try {
await compute(
_setTestnetWrapper,
coin == Coin.firoTestNet,
);
Logging.instance.log("IS_INTEGRATION_TEST: $integrationTestFlag",
level: LogLevel.Info);
if (!integrationTestFlag) {
final features = await electrumXClient.getServerFeatures();
Logging.instance.log("features: $features", level: LogLevel.Info);
switch (coin) {
case Coin.firo:
if (features['genesis_hash'] != GENESIS_HASH_MAINNET) {
throw Exception("genesis hash does not match main net!");
}
break;
case Coin.firoTestNet:
if (features['genesis_hash'] != GENESIS_HASH_TESTNET) {
throw Exception("genesis hash does not match test net!");
}
break;
default:
throw Exception(
"Attempted to generate a FiroWallet using a non firo coin type: ${coin.name}");
}
// if (_networkType == BasicNetworkType.main) {
// if (features['genesis_hash'] != GENESIS_HASH_MAINNET) {
// throw Exception("genesis hash does not match main net!");
// }
// } else if (_networkType == BasicNetworkType.test) {
// if (features['genesis_hash'] != GENESIS_HASH_TESTNET) {
// throw Exception("genesis hash does not match test net!");
// }
// }
}
// this should never fail
if ((await mnemonicString) != null ||
(await this.mnemonicPassphrase) != null) {
longMutex = false;
throw Exception("Attempted to overwrite mnemonic on restore!");
}
await _secureStore.write(
key: '${_walletId}_mnemonic', value: mnemonic.trim());
await _secureStore.write(
key: '${_walletId}_mnemonicPassphrase',
value: mnemonicPassphrase ?? "",
);
await _recoverWalletFromBIP32SeedPhrase(
mnemonic.trim(),
mnemonicPassphrase ?? "",
maxUnusedAddressGap,
);
await compute(
_setTestnetWrapper,
false,
);
} catch (e, s) {
await compute(
_setTestnetWrapper,
false,
);
Logging.instance.log(
"Exception rethrown from recoverFromMnemonic(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
bool longMutex = false;
Future<Map<int, dynamic>> getSetDataMap(int latestSetId) async {
final Map<int, dynamic> setDataMap = {};
final anonymitySets = await fetchAnonymitySets();
for (int setId = 1; setId <= latestSetId; setId++) {
final setData = anonymitySets
.firstWhere((element) => element["setId"] == setId, orElse: () => {});
if (setData.isNotEmpty) {
setDataMap[setId] = setData;
}
}
return setDataMap;
}
Future<void> _makeDerivations(
String suppliedMnemonic,
String mnemonicPassphrase,
int maxUnusedAddressGap,
) async {
List<isar_models.Address> receivingAddressArray = [];
List<isar_models.Address> changeAddressArray = [];
int receivingIndex = -1;
int changeIndex = -1;
// The gap limit will be capped at 20
int receivingGapCounter = 0;
int changeGapCounter = 0;
await fillAddresses(suppliedMnemonic, mnemonicPassphrase,
numberOfThreads: Platform.numberOfProcessors - isolates.length - 1);
final receiveDerivationsString =
await _secureStore.read(key: "${walletId}_receiveDerivations");
final changeDerivationsString =
await _secureStore.read(key: "${walletId}_changeDerivations");
final receiveDerivations = Map<String, dynamic>.from(
jsonDecode(receiveDerivationsString ?? "{}") as Map);
final changeDerivations = Map<String, dynamic>.from(
jsonDecode(changeDerivationsString ?? "{}") as Map);
// log("rcv: $receiveDerivations");
// log("chg: $changeDerivations");
// Deriving and checking for receiving addresses
for (var i = 0; i < receiveDerivations.length; i++) {
// Break out of loop when receivingGapCounter hits maxUnusedAddressGap
// Same gap limit for change as for receiving, breaks when it hits maxUnusedAddressGap
if (receivingGapCounter >= maxUnusedAddressGap &&
changeGapCounter >= maxUnusedAddressGap) {
break;
}
final receiveDerivation = receiveDerivations["$i"];
final address = receiveDerivation['address'] as String;
final changeDerivation = changeDerivations["$i"];
final _address = changeDerivation['address'] as String;
Future<int>? futureNumTxs;
Future<int>? _futureNumTxs;
if (receivingGapCounter < maxUnusedAddressGap) {
futureNumTxs = _getReceivedTxCount(address: address);
}
if (changeGapCounter < maxUnusedAddressGap) {
_futureNumTxs = _getReceivedTxCount(address: _address);
}
try {
if (futureNumTxs != null) {
int numTxs = await futureNumTxs;
if (numTxs >= 1) {
receivingIndex = i;
final derivePath = constructDerivePath(
networkWIF: _network.wif,
chain: 0,
index: receivingIndex,
);
final addr = isar_models.Address(
walletId: walletId,
value: address,
publicKey: Format.stringToUint8List(
receiveDerivation['publicKey'] as String),
type: isar_models.AddressType.p2pkh,
derivationIndex: i,
derivationPath: isar_models.DerivationPath()..value = derivePath,
subType: isar_models.AddressSubType.receiving,
);
receivingAddressArray.add(addr);
} else if (numTxs == 0) {
receivingGapCounter += 1;
}
}
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from recoverWalletFromBIP32SeedPhrase(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
try {
if (_futureNumTxs != null) {
int numTxs = await _futureNumTxs;
if (numTxs >= 1) {
changeIndex = i;
final derivePath = constructDerivePath(
networkWIF: _network.wif,
chain: 1,
index: changeIndex,
);
final addr = isar_models.Address(
walletId: walletId,
value: _address,
publicKey: Format.stringToUint8List(
changeDerivation['publicKey'] as String),
type: isar_models.AddressType.p2pkh,
derivationIndex: i,
derivationPath: isar_models.DerivationPath()..value = derivePath,
subType: isar_models.AddressSubType.change,
);
changeAddressArray.add(addr);
} else if (numTxs == 0) {
changeGapCounter += 1;
}
}
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from recoverWalletFromBIP32SeedPhrase(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
// 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 (receivingIndex == -1) {
final receivingAddress = await _generateAddressForChain(0, 0);
receivingAddressArray.add(receivingAddress);
}
// 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 (changeIndex == -1) {
final changeAddress = await _generateAddressForChain(1, 0);
changeAddressArray.add(changeAddress);
}
await db.updateOrPutAddresses([
...receivingAddressArray,
...changeAddressArray,
]);
}
/// Recovers wallet from [suppliedMnemonic]. Expects a valid mnemonic.
Future<void> _recoverWalletFromBIP32SeedPhrase(
String suppliedMnemonic,
String mnemonicPassphrase,
int maxUnusedAddressGap,
) async {
longMutex = true;
Logging.instance
.log("PROCESSORS ${Platform.numberOfProcessors}", level: LogLevel.Info);
try {
final latestSetId = await getLatestSetId();
final setDataMap = getSetDataMap(latestSetId);
final usedSerialNumbers = getUsedCoinSerials();
final makeDerivations = _makeDerivations(
suppliedMnemonic, mnemonicPassphrase, maxUnusedAddressGap);
await Future.wait([
updateCachedId(walletId),
updateCachedIsFavorite(false),
]);
await Future.wait([usedSerialNumbers, setDataMap, makeDerivations]);
await _restore(latestSetId, await setDataMap, await usedSerialNumbers);
longMutex = false;
} catch (e, s) {
longMutex = false;
Logging.instance.log(
"Exception rethrown from recoverWalletFromBIP32SeedPhrase(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<void> _restore(int latestSetId, Map<dynamic, dynamic> setDataMap,
dynamic usedSerialNumbers) async {
final _mnemonic = await mnemonicString;
final _mnemonicPassphrase = await mnemonicPassphrase;
final dataFuture = _refreshTransactions();
ReceivePort receivePort = await getIsolate({
"function": "restore",
"mnemonic": _mnemonic,
"mnemonicPassphrase": _mnemonicPassphrase,
"coin": coin,
"latestSetId": latestSetId,
"setDataMap": setDataMap,
"usedSerialNumbers": usedSerialNumbers,
"network": _network,
});
await Future.wait([dataFuture]);
var result = await receivePort.first;
if (result is String) {
Logging.instance
.log("restore() ->> this is a string", level: LogLevel.Error);
stop(receivePort);
throw Exception("isolate restore failed.");
}
stop(receivePort);
final message = await staticProcessRestore(
(await _txnData),
result as Map<dynamic, dynamic>,
await chainHeight,
);
await Future.wait([
firoUpdateMintIndex(message['mintIndex'] as int),
firoUpdateLelantusCoins(message['_lelantus_coins'] as List),
firoUpdateJIndex(message['jindex'] as List),
]);
final transactionMap =
message["newTxMap"] as Map<String, isar_models.Transaction>;
Map<String, Tuple2<isar_models.Address?, isar_models.Transaction>> data =
{};
for (final entry in transactionMap.entries) {
data[entry.key] = Tuple2(entry.value.address.value, entry.value);
}
// Create the joinsplit transactions.
final spendTxs = await getJMintTransactions(
_cachedElectrumXClient,
message["spendTxIds"] as List<String>,
coin,
);
Logging.instance.log(spendTxs, level: LogLevel.Info);
for (var element in spendTxs.entries) {
final address = element.value.address.value ??
data[element.value.txid]?.item1 ??
element.key;
// isar_models.Address(
// walletId: walletId,
// value: transactionInfo["address"] as String,
// derivationIndex: -1,
// type: isar_models.AddressType.nonWallet,
// subType: isar_models.AddressSubType.nonWallet,
// publicKey: [],
// );
data[element.value.txid] = Tuple2(address, element.value);
}
final List<Tuple2<isar_models.Transaction, isar_models.Address?>> txnsData =
[];
for (final value in data.values) {
final transactionAddress = value.item1!;
final outs =
value.item2.outputs.where((_) => true).toList(growable: false);
final ins = value.item2.inputs.where((_) => true).toList(growable: false);
txnsData.add(Tuple2(
value.item2.copyWith(inputs: ins, outputs: outs).item1,
transactionAddress));
}
await db.addNewTransactionData(txnsData, walletId);
}
Future<List<Map<String, dynamic>>> fetchAnonymitySets() async {
try {
final latestSetId = await getLatestSetId();
final List<Map<String, dynamic>> sets = [];
List<Future<Map<String, dynamic>>> anonFutures = [];
for (int i = 1; i <= latestSetId; i++) {
final set = cachedElectrumXClient.getAnonymitySet(
groupId: "$i",
coin: coin,
);
anonFutures.add(set);
}
await Future.wait(anonFutures);
for (int i = 1; i <= latestSetId; i++) {
Map<String, dynamic> set = (await anonFutures[i - 1]);
set["setId"] = i;
sets.add(set);
}
return sets;
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from refreshAnonymitySets: $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<dynamic> _createJoinSplitTransaction(
int spendAmount, String address, bool subtractFeeFromAmount) async {
final _mnemonic = await mnemonicString;
final _mnemonicPassphrase = await mnemonicPassphrase;
final index = firoGetMintIndex();
final lelantusEntry = await _getLelantusEntry();
final anonymitySets = await fetchAnonymitySets();
final locktime = await getBlockHead(electrumXClient);
// final locale =
// Platform.isWindows ? "en_US" : await Devicelocale.currentLocale;
ReceivePort receivePort = await getIsolate({
"function": "createJoinSplit",
"spendAmount": spendAmount,
"address": address,
"subtractFeeFromAmount": subtractFeeFromAmount,
"mnemonic": _mnemonic,
"mnemonicPassphrase": _mnemonicPassphrase,
"index": index,
// "price": price,
"lelantusEntries": lelantusEntry,
"locktime": locktime,
"coin": coin,
"network": _network,
"_anonymity_sets": anonymitySets,
// "locale": locale,
});
var message = await receivePort.first;
if (message is String) {
Logging.instance
.log("Error in CreateJoinSplit: $message", level: LogLevel.Error);
stop(receivePort);
return 3;
}
if (message is int) {
stop(receivePort);
return message;
}
stop(receivePort);
Logging.instance.log('Closing createJoinSplit!', level: LogLevel.Info);
return message;
}
Future<int> getLatestSetId() async {
try {
final id = await electrumXClient.getLatestCoinId();
return id;
} catch (e, s) {
Logging.instance.log("Exception rethrown in firo_wallet.dart: $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<List<dynamic>> getUsedCoinSerials() async {
try {
final response = await cachedElectrumXClient.getUsedCoinSerials(
coin: coin,
);
return response;
} catch (e, s) {
Logging.instance.log("Exception rethrown in firo_wallet.dart: $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
@override
Future<void> exit() async {
_hasCalledExit = true;
timer?.cancel();
timer = null;
stopNetworkAlivePinging();
for (final isolate in isolates.values) {
isolate.kill(priority: Isolate.immediate);
}
isolates.clear();
Logging.instance
.log("$walletName firo_wallet exit finished", level: LogLevel.Info);
}
bool _hasCalledExit = false;
@override
bool get hasCalledExit => _hasCalledExit;
bool isActive = false;
@override
void Function(bool)? get onIsActiveWalletChanged => (isActive) async {
timer?.cancel();
timer = null;
if (isActive) {
await compute(
_setTestnetWrapper,
coin == Coin.firoTestNet,
);
} else {
await compute(
_setTestnetWrapper,
false,
);
}
this.isActive = isActive;
};
Future<dynamic> getCoinsToJoinSplit(
int required,
) async {
List<DartLelantusEntry> coins = await _getLelantusEntry();
if (required > LELANTUS_VALUE_SPEND_LIMIT_PER_TRANSACTION) {
return false;
}
int availableBalance = coins.fold(
0, (previousValue, element) => previousValue + element.amount);
if (required > availableBalance) {
return false;
}
// sort by biggest amount. if it is same amount we will prefer the older block
coins.sort((a, b) =>
(a.amount != b.amount ? a.amount > b.amount : a.height < b.height)
? -1
: 1);
int spendVal = 0;
List<DartLelantusEntry> coinsToSpend = [];
while (spendVal < required) {
if (coins.isEmpty) {
break;
}
DartLelantusEntry? chosen;
int need = required - spendVal;
var itr = coins.first;
if (need >= itr.amount) {
chosen = itr;
coins.remove(itr);
} else {
for (int index = coins.length - 1; index != 0; index--) {
var coinIt = coins[index];
var nextItr = coins[index - 1];
if (coinIt.amount >= need &&
(index - 1 == 0 || nextItr.amount != coinIt.amount)) {
chosen = coinIt;
coins.remove(chosen);
break;
}
}
}
// TODO: investigate the bug here where chosen is null, conditions, given one mint
spendVal += chosen!.amount;
coinsToSpend.insert(coinsToSpend.length, chosen);
}
// sort by group id ay ascending order. it is mandatory for creating proper joinsplit
coinsToSpend.sort((a, b) => a.anonymitySetId < b.anonymitySetId ? 1 : -1);
int changeToMint = spendVal - required;
List<int> indices = [];
for (var l in coinsToSpend) {
indices.add(l.index);
}
List<DartLelantusEntry> coinsToBeSpentOut = [];
coinsToBeSpentOut.addAll(coinsToSpend);
return {"changeToMint": changeToMint, "coinsToSpend": coinsToBeSpentOut};
}
Future<int> estimateJoinSplitFee(
int spendAmount,
) async {
var lelantusEntry = await _getLelantusEntry();
final balance = availablePrivateBalance().decimal;
int spendAmount = (balance * Decimal.fromInt(Constants.satsPerCoin(coin)))
.toBigInt()
.toInt();
if (spendAmount == 0 || lelantusEntry.isEmpty) {
return LelantusFeeData(0, 0, []).fee;
}
ReceivePort receivePort = await getIsolate({
"function": "estimateJoinSplit",
"spendAmount": spendAmount,
"subtractFeeFromAmount": true,
"lelantusEntries": lelantusEntry,
"coin": coin,
});
final message = await receivePort.first;
if (message is String) {
Logging.instance.log("this is a string", level: LogLevel.Error);
stop(receivePort);
throw Exception("_fetchMaxFee isolate failed");
}
stop(receivePort);
Logging.instance.log('Closing estimateJoinSplit!', level: LogLevel.Info);
return (message as LelantusFeeData).fee;
}
// int fee;
// int size;
//
// for (fee = 0;;) {
// int currentRequired = spendAmount;
//
// TODO: investigate the bug here
// var map = await getCoinsToJoinSplit(currentRequired);
// if (map is bool && !map) {
// return 0;
// }
//
// List<DartLelantusEntry> coinsToBeSpent =
// map['coinsToSpend'] as List<DartLelantusEntry>;
//
// // 1054 is constant part, mainly Schnorr and Range proofs, 2560 is for each sigma/aux data
// // 179 other parts of tx, assuming 1 utxo and 1 jmint
// size = 1054 + 2560 * coinsToBeSpent.length + 180;
// // uint64_t feeNeeded = GetMinimumFee(size, DEFAULT_TX_CONFIRM_TARGET);
// int feeNeeded =
// size; //TODO(Levon) temporary, use real estimation methods here
//
// if (fee >= feeNeeded) {
// break;
// }
//
// fee = feeNeeded;
// }
//
// return fee;
@override
Future<Amount> estimateFeeFor(Amount amount, int feeRate) async {
int fee = await estimateJoinSplitFee(amount.raw.toInt());
return Amount(rawValue: BigInt.from(fee), fractionDigits: coin.decimals);
}
Future<Amount> estimateFeeForPublic(Amount amount, int feeRate) async {
final available = balance.spendable;
if (available == amount) {
return amount - (await sweepAllEstimate(feeRate));
} else if (amount <= Amount.zero || amount > available) {
return roughFeeEstimate(1, 2, feeRate);
}
Amount runningBalance = Amount(
rawValue: BigInt.zero,
fractionDigits: coin.decimals,
);
int inputCount = 0;
for (final output in (await utxos)) {
if (!output.isBlocked) {
runningBalance = runningBalance +
Amount(
rawValue: BigInt.from(output.value),
fractionDigits: coin.decimals,
);
inputCount++;
if (runningBalance > amount) {
break;
}
}
}
final oneOutPutFee = roughFeeEstimate(inputCount, 1, feeRate);
final twoOutPutFee = roughFeeEstimate(inputCount, 2, feeRate);
final dustLimitAmount = Amount(
rawValue: BigInt.from(DUST_LIMIT),
fractionDigits: coin.decimals,
);
if (runningBalance - amount > oneOutPutFee) {
if (runningBalance - amount > oneOutPutFee + dustLimitAmount) {
final change = runningBalance - amount - twoOutPutFee;
if (change > dustLimitAmount &&
runningBalance - amount - change == twoOutPutFee) {
return runningBalance - amount - change;
} else {
return runningBalance - amount;
}
} else {
return runningBalance - amount;
}
} else if (runningBalance - amount == oneOutPutFee) {
return oneOutPutFee;
} else {
return twoOutPutFee;
}
}
// TODO: correct formula for firo?
Amount roughFeeEstimate(int inputCount, int outputCount, int feeRatePerKB) {
return Amount(
rawValue: BigInt.from(((181 * inputCount) + (34 * outputCount) + 10) *
(feeRatePerKB / 1000).ceil()),
fractionDigits: coin.decimals,
);
}
Future<Amount> sweepAllEstimate(int feeRate) async {
int available = 0;
int inputCount = 0;
for (final output in (await utxos)) {
if (!output.isBlocked &&
output.isConfirmed(storedChainHeight, MINIMUM_CONFIRMATIONS)) {
available += output.value;
inputCount++;
}
}
// transaction will only have 1 output minus the fee
final estimatedFee = roughFeeEstimate(inputCount, 1, feeRate);
return Amount(
rawValue: BigInt.from(available),
fractionDigits: coin.decimals,
) -
estimatedFee;
}
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;
// delete unused large parts
tx.remove("hex");
tx.remove("lelantusData");
allTransactions.add(tx);
}
}
}
if (currentFutureCount != 0) {
currentFutureCount = 0;
await Future.wait(transactionFutures);
for (final fTx in transactionFutures) {
final tx = await fTx;
// delete unused large parts
tx.remove("hex");
tx.remove("lelantusData");
allTransactions.add(tx);
}
}
return allTransactions;
}
Future<Map<isar_models.Address, isar_models.Transaction>>
getJMintTransactions(
CachedElectrumX cachedClient,
List<String> transactions,
// String currency,
Coin coin,
// Decimal currentPrice,
// String locale,
) async {
try {
Map<isar_models.Address, isar_models.Transaction> txs = {};
List<Map<String, dynamic>> allTransactions =
await fastFetch(transactions);
for (int i = 0; i < allTransactions.length; i++) {
try {
final tx = allTransactions[i];
var sendIndex = 1;
if (tx["vout"][0]["value"] != null &&
Decimal.parse(tx["vout"][0]["value"].toString()) > Decimal.zero) {
sendIndex = 0;
}
tx["amount"] = tx["vout"][sendIndex]["value"];
tx["address"] = tx["vout"][sendIndex]["scriptPubKey"]["addresses"][0];
tx["fees"] = tx["vin"][0]["nFees"];
final Amount amount = Amount.fromDecimal(
Decimal.parse(tx["amount"].toString()),
fractionDigits: coin.decimals,
);
final txn = isar_models.Transaction(
walletId: walletId,
txid: tx["txid"] as String,
timestamp: tx["time"] as int? ??
(DateTime.now().millisecondsSinceEpoch ~/ 1000),
type: isar_models.TransactionType.outgoing,
subType: isar_models.TransactionSubType.join,
amount: amount.raw.toInt(),
amountString: amount.toJsonString(),
fee: Amount.fromDecimal(
Decimal.parse(tx["fees"].toString()),
fractionDigits: coin.decimals,
).raw.toInt(),
height: tx["height"] as int?,
isCancelled: false,
isLelantus: true,
slateId: null,
otherData: null,
nonce: null,
inputs: [],
outputs: [],
);
final address = await db
.getAddresses(walletId)
.filter()
.valueEqualTo(tx["address"] as String)
.findFirst() ??
isar_models.Address(
walletId: walletId,
value: tx["address"] as String,
derivationIndex: -2,
derivationPath: null,
type: isar_models.AddressType.nonWallet,
subType: isar_models.AddressSubType.unknown,
publicKey: [],
);
txs[address] = txn;
} catch (e, s) {
Logging.instance.log(
"Exception caught in getJMintTransactions(): $e\n$s",
level: LogLevel.Info);
rethrow;
}
}
return txs;
} catch (e, s) {
Logging.instance.log(
"Exception rethrown in getJMintTransactions(): $e\n$s",
level: LogLevel.Info);
rethrow;
}
}
@override
Future<bool> generateNewAddress() async {
try {
final currentReceiving = await _currentReceivingAddress;
final newReceivingIndex = currentReceiving.derivationIndex + 1;
// Use new index to derive a new receiving address
final newReceivingAddress = await _generateAddressForChain(
0,
newReceivingIndex,
);
// Add that new receiving address
await db.putAddress(newReceivingAddress);
return true;
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from generateNewAddress(): $e\n$s",
level: LogLevel.Error);
return false;
}
}
Amount availablePrivateBalance() {
return balancePrivate.spendable;
}
Amount availablePublicBalance() {
return balance.spendable;
}
Future<int> get chainHeight async {
try {
final result = await _electrumXClient.getBlockHeadTip();
final height = result["height"] as int;
await updateCachedChainHeight(height);
if (height > storedChainHeight) {
GlobalEventBus.instance.fire(
UpdatedInBackgroundEvent(
"Updated current chain height in $walletId $walletName!",
walletId,
),
);
}
return height;
} catch (e, s) {
Logging.instance.log("Exception caught in chainHeight: $e\n$s",
level: LogLevel.Error);
return storedChainHeight;
}
}
@override
int get storedChainHeight => getCachedChainHeight();
@override
Balance get balance => _balance ??= getCachedBalance();
Balance? _balance;
Balance get balancePrivate => _balancePrivate ??= getCachedBalanceSecondary();
Balance? _balancePrivate;
@override
Future<List<isar_models.UTXO>> get utxos => db.getUTXOs(walletId).findAll();
@override
Future<List<isar_models.Transaction>> get transactions =>
db.getTransactions(walletId).findAll();
@override
Future<String> get xpub async {
final node = await Bip32Utils.getBip32Root(
(await mnemonic).join(" "),
await mnemonicPassphrase ?? "",
_network,
);
return node.neutered().toBase58();
}
}