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stack_wallet/lib/services/coins/firo/firo_wallet.dart
julian 2d5b73c45e firo private send vsize check
2022-09-24 10:55:01 -06:00

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import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'dart:isolate';
import 'dart:math';
import 'dart:typed_data';
import 'package:bip32/bip32.dart' as bip32;
import 'package:bip39/bip39.dart' as bip39;
import 'package:bitcoindart/bitcoindart.dart';
import 'package:decimal/decimal.dart';
import 'package:devicelocale/devicelocale.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
import 'package:http/http.dart';
import 'package:lelantus/lelantus.dart';
import 'package:stackwallet/electrumx_rpc/cached_electrumx.dart';
import 'package:stackwallet/electrumx_rpc/electrumx.dart';
import 'package:stackwallet/hive/db.dart';
import 'package:stackwallet/models/lelantus_coin.dart';
import 'package:stackwallet/models/lelantus_fee_data.dart';
import 'package:stackwallet/models/models.dart' as models;
import 'package:stackwallet/models/paymint/fee_object_model.dart';
import 'package:stackwallet/models/paymint/utxo_model.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/node_service.dart';
import 'package:stackwallet/services/notifications_api.dart';
import 'package:stackwallet/services/price.dart';
import 'package:stackwallet/services/transaction_notification_tracker.dart';
import 'package:stackwallet/utilities/address_utils.dart';
import 'package:stackwallet/utilities/assets.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/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 index = arguments['index'] as int;
final price = arguments['price'] as Decimal;
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>?;
final locale = arguments["locale"] as String;
if (!(network == null || anonymitySets == null)) {
var joinSplit = await isolateCreateJoinSplitTransaction(
spendAmount,
address,
subtractFeeFromAmount,
mnemonic,
index,
price,
lelantusEntries,
locktime,
coin,
network,
anonymitySets,
locale);
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 coin = arguments['coin'] as Coin;
final network = arguments['network'] as NetworkType?;
if (!(usedSerialNumbers == null || network == null)) {
var restoreData = await isolateRestore(
mnemonic,
coin,
latestSetId,
setDataMap,
usedSerialNumbers,
network,
);
sendPort.send(restoreData);
return;
}
} else if (function == "isolateDerive") {
final mnemonic = arguments['mnemonic'] 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, 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, int from, int to, NetworkType _network) async {
Map<String, dynamic> result = {};
Map<String, dynamic> allReceive = {};
Map<String, dynamic> allChange = {};
final root = getBip32Root(mnemonic, _network);
for (int i = from; i < to; i++) {
var currentNode = getBip32NodeFromRoot(0, i, root);
var address = P2PKH(
network: _network, data: PaymentData(pubkey: currentNode.publicKey))
.data
.address!;
allReceive["$i"] = {
"publicKey": Format.uint8listToString(currentNode.publicKey),
"wif": currentNode.toWIF(),
"address": address,
};
currentNode = getBip32NodeFromRoot(1, i, root);
address = P2PKH(
network: _network, data: PaymentData(pubkey: currentNode.publicKey))
.data
.address!;
allChange["$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,
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 = getBip32Root(mnemonic, network);
while (currentIndex < lastFoundIndex + 20) {
final mintKeyPair = getBip32NodeFromRoot(MINT_INDEX, currentIndex, root);
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) {
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 aesKeyPair = getBip32NodeFromRoot(JMINT_INDEX, keyPath, root);
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) {
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(
models.TransactionData data,
Map<dynamic, dynamic> result,
) 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, models.Transaction> editedTransactions =
<String, models.Transaction>{};
for (var item in lelantusCoins) {
item.forEach((key, value) {
String txid = value.txId;
var tx = data.findTransaction(txid);
if (tx == null) {
// This is a jmint.
return;
}
List<models.Transaction> inputs = [];
for (var element in tx.inputs) {
var input = data.findTransaction(element.txid);
if (input != null) {
inputs.add(input);
}
}
if (inputs.isEmpty) {
//some error.
return;
}
int mintfee = tx.fees;
int sharedfee = mintfee ~/ inputs.length;
for (var element in inputs) {
editedTransactions[element.txid] = models.Transaction(
txid: element.txid,
confirmedStatus: element.confirmedStatus,
timestamp: element.timestamp,
txType: element.txType,
amount: element.amount,
aliens: element.aliens,
worthNow: element.worthNow,
worthAtBlockTimestamp: element.worthAtBlockTimestamp,
fees: sharedfee,
inputSize: element.inputSize,
outputSize: element.outputSize,
inputs: element.inputs,
outputs: element.outputs,
address: element.address,
height: element.height,
confirmations: element.confirmations,
subType: "mint",
otherData: txid,
);
}
});
}
// Logging.instance.log(editedTransactions, addToDebugMessagesDB: false);
Map<String, models.Transaction> transactionMap = data.getAllTransactions();
// 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.confirmedStatus));
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} ${estimateFeeData.spendCoinIndexes}",
level: LogLevel.Info);
return estimateFeeData;
}
Future<dynamic> isolateCreateJoinSplitTransaction(
int spendAmount,
String address,
bool subtractFeeFromAmount,
String mnemonic,
int index,
Decimal price,
List<DartLelantusEntry> lelantusEntries,
int locktime,
Coin coin,
NetworkType _network,
List<Map<dynamic, dynamic>> anonymitySetsArg,
String locale,
) async {
final estimateJoinSplitFee = await isolateEstimateJoinSplitFee(
spendAmount, subtractFeeFromAmount, lelantusEntries, coin);
var changeToMint = estimateJoinSplitFee.changeToMint;
var fee = estimateJoinSplitFee.fee;
var spendCoinIndexes = estimateJoinSplitFee.spendCoinIndexes;
Logging.instance
.log("$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 jmintKeyPair = getBip32Node(MINT_INDEX, index, mnemonic, _network);
final String jmintprivatekey =
Format.uint8listToString(jmintKeyPair.privateKey!);
final keyPath = getMintKeyPath(changeToMint, jmintprivatekey, index,
isTestnet: coin == Coin.firoTestNet);
final aesKeyPair = getBip32Node(JMINT_INDEX, keyPath, mnemonic, _network);
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);
return {
"txid": txId,
"txHex": txHex,
"value": amount,
"fees": Format.satoshisToAmount(fee).toDouble(),
"fee": fee,
"vSize": extTx.virtualSize(),
"jmintValue": changeToMint,
"publicCoin": "jmintData.publicCoin",
"spendCoinIndexes": spendCoinIndexes,
"height": locktime,
"txType": "Sent",
"confirmed_status": false,
"amount": Format.satoshisToAmount(amount).toDouble(),
"recipientAmt": amount,
"worthNow": Format.localizedStringAsFixed(
value: ((Decimal.fromInt(amount) * price) /
Decimal.fromInt(Constants.satsPerCoin))
.toDecimal(scaleOnInfinitePrecision: 2),
decimalPlaces: 2,
locale: locale),
"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(): $e", level: LogLevel.Error);
rethrow;
}
}
// end of isolates
bip32.BIP32 getBip32Node(
int chain, int index, String mnemonic, NetworkType network) {
final root = getBip32Root(mnemonic, network);
final node = getBip32NodeFromRoot(chain, index, root);
return node;
}
/// wrapper for compute()
bip32.BIP32 getBip32NodeWrapper(
Tuple4<int, int, String, NetworkType> args,
) {
return getBip32Node(
args.item1,
args.item2,
args.item3,
args.item4,
);
}
bip32.BIP32 getBip32NodeFromRoot(int chain, int index, bip32.BIP32 root) {
String coinType;
switch (root.network.wif) {
case 0xd2: // firo mainnet wif
coinType = "136"; // firo mainnet
break;
case 0xb9: // firo testnet wif
coinType = "1"; // firo testnet
break;
default:
throw Exception("Invalid Bitcoin network type used!");
}
final node = root.derivePath("m/44'/$coinType'/0'/$chain/$index");
return node;
}
/// wrapper for compute()
bip32.BIP32 getBip32NodeFromRootWrapper(
Tuple3<int, int, bip32.BIP32> args,
) {
return getBip32NodeFromRoot(
args.item1,
args.item2,
args.item3,
);
}
bip32.BIP32 getBip32Root(String mnemonic, NetworkType network) {
final seed = bip39.mnemonicToSeed(mnemonic);
final firoNetworkType = bip32.NetworkType(
wif: network.wif,
bip32: bip32.Bip32Type(
public: network.bip32.public,
private: network.bip32.private,
),
);
final root = bip32.BIP32.fromSeed(seed, firoNetworkType);
return root;
}
/// wrapper for compute()
bip32.BIP32 getBip32RootWrapper(Tuple2<String, NetworkType> args) {
return getBip32Root(args.item1, args.item2);
}
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);
}
Future<Map<String, dynamic>?> getInitialAnonymitySetCache(
String groupID,
) async {
Logging.instance.log("getInitialAnonymitySetCache", level: LogLevel.Info);
final Client client = Client();
try {
final uri = Uri.parse("$kStackCommunityNodesEndpoint/getAnonymity");
final anonSetResult = await client.post(
uri,
headers: {'Content-Type': 'application/json'},
body: jsonEncode({
"jsonrpc": "2.0",
"id": "0",
'aset': groupID,
}),
);
final response = jsonDecode(anonSetResult.body.toString());
if (response['status'] == 'success') {
final anonResponse = jsonDecode(response['result'] as String);
final setData = Map<String, dynamic>.from(anonResponse["result"] as Map);
return setData;
} else {
return null;
}
} catch (e, s) {
Logging.instance.log("$e $s", level: LogLevel.Error);
return null;
}
}
/// Handles a single instance of a firo wallet
class FiroWallet extends CoinServiceAPI {
static const integrationTestFlag =
bool.fromEnvironment("IS_INTEGRATION_TEST");
final _prefs = Prefs.instance;
Timer? timer;
late 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) {
DB.instance.put<dynamic>(
boxName: walletId, key: "isFavorite", value: markFavorite);
}
@override
bool get isFavorite {
try {
return DB.instance.get<dynamic>(boxName: walletId, key: "isFavorite")
as bool;
} catch (e, s) {
Logging.instance
.log("isFavorite fetch failed: $e\n$s", level: LogLevel.Error);
rethrow;
}
}
@override
Coin get coin => _coin;
// @override
// String get coinName =>
// networkType == BasicNetworkType.main ? "Firo" : "tFiro";
//
// @override
// String get coinTicker =>
// networkType == BasicNetworkType.main ? "FIRO" : "tFIRO";
@override
Future<List<String>> get mnemonic => _getMnemonicList();
// 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)
@override
Future<Decimal> get availableBalance async {
final balances = await this.balances;
return balances[0];
}
// 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)
@override
Future<Decimal> get pendingBalance async {
final balances = await this.balances;
return balances[2] - balances[0];
}
// 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)
@override
Future<Decimal> get totalBalance async {
if (!isActive) {
final totalBalance = DB.instance
.get<dynamic>(boxName: walletId, key: 'totalBalance') as String?;
if (totalBalance == null) {
final balances = await this.balances;
return balances[2];
} else {
return Decimal.parse(totalBalance);
// the following caused a crash as it seems totalBalance here
// is a string. Gotta love dynamics
// return Format.satoshisToAmount(totalBalance);
}
}
final balances = await this.balances;
return balances[2];
}
/// return spendable balance minus the maximum tx fee
@override
Future<Decimal> get balanceMinusMaxFee async {
final balances = await this.balances;
final maxFee = await this.maxFee;
return balances[0] - Format.satoshisToAmount(maxFee);
}
@override
Future<models.TransactionData> get transactionData => lelantusTransactionData;
@override
bool validateAddress(String address) {
return Address.validateAddress(address, _network);
}
/// Holds final balances, all utxos under control
Future<UtxoData>? _utxoData;
Future<UtxoData> get utxoData => _utxoData ??= _fetchUtxoData();
@override
Future<List<UtxoObject>> get unspentOutputs async =>
(await utxoData).unspentOutputArray;
/// Holds wallet transaction data
Future<models.TransactionData>? _transactionData;
Future<models.TransactionData> get _txnData =>
_transactionData ??= _fetchTransactionData();
/// Holds wallet lelantus transaction data
Future<models.TransactionData>? _lelantusTransactionData;
Future<models.TransactionData> get lelantusTransactionData =>
_lelantusTransactionData ??= _getLelantusTransactionData();
/// Holds the max fee that can be sent
Future<int>? _maxFee;
@override
Future<int> get maxFee => _maxFee ??= _fetchMaxFee();
/// Holds the current balance data
Future<List<Decimal>>? _balances;
Future<List<Decimal>> get balances => _balances ??= _getFullBalance();
/// Holds all outputs for wallet, used for displaying utxos in app security view
List<UtxoObject> _outputsList = [];
Future<Decimal> get firoPrice async {
final data =
await _priceAPI.getPricesAnd24hChange(baseCurrency: _prefs.currency);
if (coin == Coin.firoTestNet) {
return data[Coin.firo]!.item1;
}
return data[coin]!.item1;
}
// currently isn't used but required due to abstract parent class
Future<FeeObject>? _feeObject;
@override
Future<FeeObject> get fees => _feeObject ??= _getFees();
/// Holds updated receiving address
Future<String>? _currentReceivingAddress;
@override
Future<String> get currentReceivingAddress =>
_currentReceivingAddress ??= _getCurrentAddressForChain(0);
// @override
// Future<String> get currentLegacyReceivingAddress => null;
late String _walletName;
@override
String get walletName => _walletName;
// setter for updating on rename
@override
set walletName(String newName) => _walletName = newName;
/// unique wallet id
late String _walletId;
@override
String get walletId => _walletId;
Future<List<String>>? _allOwnAddresses;
@override
Future<List<String>> get allOwnAddresses =>
_allOwnAddresses ??= _fetchAllOwnAddresses();
@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 int satoshiAmount,
Map<String, dynamic>? args,
}) async {
try {
final feeRateType = args?["feeRate"];
final feeRateAmount = args?["feeRateAmount"];
if (feeRateType is FeeRateType || feeRateAmount is int) {
late final int rate;
if (feeRateType is FeeRateType) {
int fee = 0;
final feeObject = await fees;
switch (feeRateType) {
case FeeRateType.fast:
fee = feeObject.fast;
break;
case FeeRateType.average:
fee = feeObject.medium;
break;
case FeeRateType.slow:
fee = feeObject.slow;
break;
}
rate = fee;
} else {
rate = feeRateAmount as int;
}
// check for send all
bool isSendAll = false;
final balance =
Format.decimalAmountToSatoshis(await availablePublicBalance());
if (satoshiAmount == balance) {
isSendAll = true;
}
final txData =
await coinSelection(satoshiAmount, 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);
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 int satoshiAmount,
Map<String, dynamic>? args,
}) async {
try {
// check for send all
bool isSendAll = false;
final balance =
Format.decimalAmountToSatoshis(await availablePrivateBalance());
if (satoshiAmount == balance) {
// print("is send all");
isSendAll = true;
}
dynamic txHexOrError =
await _createJoinSplitTransaction(satoshiAmount, 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);
sendTotal += Decimal.parse(txData["fees"].toString());
final bals = await balances;
bals[0] -= sendTotal;
_balances = Future(() => bals);
return txid;
} catch (e, s) {
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);
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 _secureStore.read(key: '${_walletId}_mnemonic');
if (mnemonicString == null) {
return [];
}
final List<String> data = mnemonicString.split(' ');
return data;
}
late ElectrumX _electrumXClient;
ElectrumX get electrumXClient => _electrumXClient;
late CachedElectrumX _cachedElectrumXClient;
CachedElectrumX get cachedElectrumXClient => _cachedElectrumXClient;
late FlutterSecureStorageInterface _secureStore;
late PriceAPI _priceAPI;
late TransactionNotificationTracker txTracker;
// Constructor
FiroWallet({
required String walletId,
required String walletName,
required Coin coin,
required ElectrumX client,
required CachedElectrumX cachedClient,
required TransactionNotificationTracker tracker,
PriceAPI? priceAPI,
FlutterSecureStorageInterface? secureStore,
}) {
txTracker = tracker;
_walletId = walletId;
_walletName = walletName;
_coin = coin;
_electrumXClient = client;
_cachedElectrumXClient = cachedClient;
_priceAPI = priceAPI ?? PriceAPI(Client());
_secureStore =
secureStore ?? const SecureStorageWrapper(FlutterSecureStorage());
Logging.instance.log("$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();
}
int estimateTxFee({required int vSize, required int feeRatePerKB}) {
return vSize * (feeRatePerKB / 1000).ceil();
}
/// The coinselection algorithm decides whether or not the user is eligible to make the transaction
/// with [satoshiAmountToSend] and [selectedTxFeeRate]. If so, it will call buildTrasaction() and return
/// a map containing the tx hex along with other important information. If not, then it will return
/// an integer (1 or 2)
dynamic coinSelection(
int satoshiAmountToSend,
int selectedTxFeeRate,
String _recipientAddress,
bool isSendAll, {
int additionalOutputs = 0,
List<UtxoObject>? utxos,
}) async {
Logging.instance
.log("Starting coinSelection ----------", level: LogLevel.Info);
final List<UtxoObject> availableOutputs = utxos ?? _outputsList;
final List<UtxoObject> spendableOutputs = [];
int spendableSatoshiValue = 0;
// Build list of spendable outputs and totaling their satoshi amount
for (var i = 0; i < availableOutputs.length; i++) {
if (availableOutputs[i].blocked == false &&
availableOutputs[i].status.confirmed == true) {
spendableOutputs.add(availableOutputs[i]);
spendableSatoshiValue += availableOutputs[i].value;
}
}
// sort spendable by age (oldest first)
spendableOutputs.sort(
(a, b) => b.status.confirmations.compareTo(a.status.confirmations));
Logging.instance.log("spendableOutputs.length: ${spendableOutputs.length}",
level: LogLevel.Info);
Logging.instance
.log("spendableOutputs: $spendableOutputs", level: LogLevel.Info);
Logging.instance.log("spendableSatoshiValue: $spendableSatoshiValue",
level: LogLevel.Info);
Logging.instance
.log("satoshiAmountToSend: $satoshiAmountToSend", level: LogLevel.Info);
// If the amount the user is trying to send is smaller than the amount that they have spendable,
// then return 1, which indicates that they have an insufficient balance.
if (spendableSatoshiValue < satoshiAmountToSend) {
return 1;
// If the amount the user wants to send is exactly equal to the amount they can spend, then return
// 2, which indicates that they are not leaving enough over to pay the transaction fee
} else if (spendableSatoshiValue == satoshiAmountToSend && !isSendAll) {
return 2;
}
// If neither of these statements pass, we assume that the user has a spendable balance greater
// than the amount they're attempting to send. Note that this value still does not account for
// the added transaction fee, which may require an extra input and will need to be checked for
// later on.
// Possible situation right here
int satoshisBeingUsed = 0;
int inputsBeingConsumed = 0;
List<UtxoObject> utxoObjectsToUse = [];
for (var i = 0;
satoshisBeingUsed < satoshiAmountToSend && i < spendableOutputs.length;
i++) {
utxoObjectsToUse.add(spendableOutputs[i]);
satoshisBeingUsed += spendableOutputs[i].value;
inputsBeingConsumed += 1;
}
for (int i = 0;
i < additionalOutputs && inputsBeingConsumed < spendableOutputs.length;
i++) {
utxoObjectsToUse.add(spendableOutputs[inputsBeingConsumed]);
satoshisBeingUsed += spendableOutputs[inputsBeingConsumed].value;
inputsBeingConsumed += 1;
}
Logging.instance
.log("satoshisBeingUsed: $satoshisBeingUsed", level: LogLevel.Info);
Logging.instance
.log("inputsBeingConsumed: $inputsBeingConsumed", level: LogLevel.Info);
Logging.instance
.log('utxoObjectsToUse: $utxoObjectsToUse', level: LogLevel.Info);
// numberOfOutputs' length must always be equal to that of recipientsArray and recipientsAmtArray
List<String> recipientsArray = [_recipientAddress];
List<int> recipientsAmtArray = [satoshiAmountToSend];
// gather required signing data
final utxoSigningData = await fetchBuildTxData(utxoObjectsToUse);
if (isSendAll) {
Logging.instance
.log("Attempting to send all $coin", level: LogLevel.Info);
final int vSizeForOneOutput = (await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: [_recipientAddress],
satoshiAmounts: [satoshisBeingUsed - 1],
))["vSize"] as int;
int feeForOneOutput = estimateTxFee(
vSize: vSizeForOneOutput,
feeRatePerKB: selectedTxFeeRate,
);
if (feeForOneOutput < vSizeForOneOutput + 1) {
feeForOneOutput = vSizeForOneOutput + 1;
}
final int amount = satoshiAmountToSend - feeForOneOutput;
dynamic txn = await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: [amount],
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": amount,
"fee": feeForOneOutput,
"vSize": txn["vSize"],
};
return transactionObject;
}
final int vSizeForOneOutput = (await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: [_recipientAddress],
satoshiAmounts: [satoshisBeingUsed - 1],
))["vSize"] as int;
final int vSizeForTwoOutPuts = (await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: [
_recipientAddress,
await _getCurrentAddressForChain(1),
],
satoshiAmounts: [
satoshiAmountToSend,
satoshisBeingUsed - satoshiAmountToSend - 1,
], // dust limit is the minimum amount a change output should be
))["vSize"] as int;
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(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
// make sure minimum fee is accurate if that is being used
if (txn["vSize"] - feeBeingPaid == 1) {
int changeOutputSize =
satoshisBeingUsed - satoshiAmountToSend - (txn["vSize"] as int);
feeBeingPaid =
satoshisBeingUsed - satoshiAmountToSend - changeOutputSize;
recipientsAmtArray.removeLast();
recipientsAmtArray.add(changeOutputSize);
Logging.instance.log('Adjusted Input size: $satoshisBeingUsed',
level: LogLevel.Info);
Logging.instance.log(
'Adjusted Recipient output size: $satoshiAmountToSend',
level: LogLevel.Info);
Logging.instance.log(
'Adjusted Change Output Size: $changeOutputSize',
level: LogLevel.Info);
Logging.instance.log(
'Adjusted Difference (fee being paid): $feeBeingPaid sats',
level: LogLevel.Info);
Logging.instance.log('Adjusted Estimated fee: $feeForTwoOutputs',
level: LogLevel.Info);
txn = await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
}
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": recipientsAmtArray[0],
"fee": feeBeingPaid,
"vSize": txn["vSize"],
};
return transactionObject;
} else {
// Something went wrong here. It either overshot or undershot the estimated fee amount or the changeOutputSize
// is smaller than or equal to [DUST_LIMIT]. Revert to single output transaction.
Logging.instance.log('1 output in tx', level: LogLevel.Info);
Logging.instance
.log('Input size: $satoshisBeingUsed', level: LogLevel.Info);
Logging.instance.log('Recipient output size: $satoshiAmountToSend',
level: LogLevel.Info);
Logging.instance.log(
'Difference (fee being paid): ${satoshisBeingUsed - satoshiAmountToSend} sats',
level: LogLevel.Info);
Logging.instance
.log('Estimated fee: $feeForOneOutput', level: LogLevel.Info);
dynamic txn = await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": recipientsAmtArray[0],
"fee": satoshisBeingUsed - satoshiAmountToSend,
"vSize": txn["vSize"],
};
return transactionObject;
}
} else {
// No additional outputs needed since adding one would mean that it'd be smaller than 546 sats
// which makes it uneconomical to add to the transaction. Here, we pass data directly to instruct
// the wallet to begin crafting the transaction that the user requested.
Logging.instance.log('1 output in tx', level: LogLevel.Info);
Logging.instance
.log('Input size: $satoshisBeingUsed', level: LogLevel.Info);
Logging.instance.log('Recipient output size: $satoshiAmountToSend',
level: LogLevel.Info);
Logging.instance.log(
'Difference (fee being paid): ${satoshisBeingUsed - satoshiAmountToSend} sats',
level: LogLevel.Info);
Logging.instance
.log('Estimated fee: $feeForOneOutput', level: LogLevel.Info);
dynamic txn = await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": recipientsAmtArray[0],
"fee": satoshisBeingUsed - satoshiAmountToSend,
"vSize": txn["vSize"],
};
return transactionObject;
}
} else if (satoshisBeingUsed - satoshiAmountToSend == feeForOneOutput) {
// In this scenario, no additional change output is needed since inputs - outputs equal exactly
// what we need to pay for fees. Here, we pass data directly to instruct the wallet to begin
// crafting the transaction that the user requested.
Logging.instance.log('1 output in tx', level: LogLevel.Info);
Logging.instance
.log('Input size: $satoshisBeingUsed', level: LogLevel.Info);
Logging.instance.log('Recipient output size: $satoshiAmountToSend',
level: LogLevel.Info);
Logging.instance.log(
'Fee being paid: ${satoshisBeingUsed - satoshiAmountToSend} sats',
level: LogLevel.Info);
Logging.instance
.log('Estimated fee: $feeForOneOutput', level: LogLevel.Info);
dynamic txn = await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: recipientsArray,
satoshiAmounts: recipientsAmtArray,
);
Map<String, dynamic> transactionObject = {
"hex": txn["hex"],
"recipient": recipientsArray[0],
"recipientAmt": recipientsAmtArray[0],
"fee": feeForOneOutput,
"vSize": txn["vSize"],
};
return transactionObject;
} else {
// Remember that returning 2 indicates that the user does not have a sufficient balance to
// pay for the transaction fee. Ideally, at this stage, we should check if the user has any
// additional outputs they're able to spend and then recalculate fees.
Logging.instance.log(
'Cannot pay tx fee - checking for more outputs and trying again',
level: LogLevel.Warning);
// try adding more outputs
if (spendableOutputs.length > inputsBeingConsumed) {
return coinSelection(satoshiAmountToSend, selectedTxFeeRate,
_recipientAddress, isSendAll,
additionalOutputs: additionalOutputs + 1, utxos: utxos);
}
return 2;
}
}
Future<Map<String, dynamic>> fetchBuildTxData(
List<UtxoObject> utxosToUse,
) async {
// return data
Map<String, dynamic> results = {};
Map<String, List<String>> addressTxid = {};
// addresses to check
List<String> addresses = [];
try {
// Populating the addresses to check
for (var i = 0; i < utxosToUse.length; i++) {
final txid = utxosToUse[i].txid;
final tx = await _cachedElectrumXClient.getTransaction(
txHash: txid,
coin: coin,
);
for (final output in tx["vout"] as List) {
final n = output["n"];
if (n != null && n == utxosToUse[i].vout) {
final address = output["scriptPubKey"]["addresses"][0] as String;
if (!addressTxid.containsKey(address)) {
addressTxid[address] = <String>[];
}
(addressTxid[address] as List).add(txid);
addresses.add(address);
}
}
}
// p2pkh / bip44
final addressesLength = addresses.length;
if (addressesLength > 0) {
final receiveDerivationsString =
await _secureStore.read(key: "${walletId}_receiveDerivations");
final receiveDerivations = Map<String, dynamic>.from(
jsonDecode(receiveDerivationsString ?? "{}") as Map);
final changeDerivationsString =
await _secureStore.read(key: "${walletId}_changeDerivations");
final changeDerivations = Map<String, dynamic>.from(
jsonDecode(changeDerivationsString ?? "{}") as Map);
for (int i = 0; i < addressesLength; i++) {
// receives
dynamic receiveDerivation;
for (int j = 0; j < receiveDerivations.length; j++) {
if (receiveDerivations["$j"]["address"] == addresses[i]) {
receiveDerivation = receiveDerivations["$j"];
}
}
// receiveDerivation = receiveDerivations[addresses[i]];
// if a match exists it will not be null
if (receiveDerivation != null) {
final data = P2PKH(
data: PaymentData(
pubkey: Format.stringToUint8List(
receiveDerivation["publicKey"] as String)),
network: _network,
).data;
for (String tx in addressTxid[addresses[i]]!) {
results[tx] = {
"output": data.output,
"keyPair": ECPair.fromWIF(
receiveDerivation["wif"] as String,
network: _network,
),
};
}
} else {
// if its not a receive, check change
dynamic changeDerivation;
for (int j = 0; j < changeDerivations.length; j++) {
if (changeDerivations["$j"]["address"] == addresses[i]) {
changeDerivation = changeDerivations["$j"];
}
}
// final changeDerivation = changeDerivations[addresses[i]];
// if a match exists it will not be null
if (changeDerivation != null) {
final data = P2PKH(
data: PaymentData(
pubkey: Format.stringToUint8List(
changeDerivation["publicKey"] as String)),
network: _network,
).data;
for (String tx in addressTxid[addresses[i]]!) {
results[tx] = {
"output": data.output,
"keyPair": ECPair.fromWIF(
changeDerivation["wif"] as String,
network: _network,
),
};
}
}
}
}
}
return results;
} catch (e, s) {
Logging.instance
.log("fetchBuildTxData() threw: $e,\n$s", level: LogLevel.Error);
rethrow;
}
}
/// Builds and signs a transaction
Future<Map<String, dynamic>> buildTransaction({
required List<UtxoObject> utxosToUse,
required Map<String, dynamic> utxoSigningData,
required List<String> recipients,
required List<int> satoshiAmounts,
}) async {
Logging.instance
.log("Starting buildTransaction ----------", level: LogLevel.Info);
final txb = TransactionBuilder(network: _network);
txb.setVersion(1);
// Add transaction inputs
for (var i = 0; i < utxosToUse.length; i++) {
final txid = utxosToUse[i].txid;
txb.addInput(txid, utxosToUse[i].vout, null,
utxoSigningData[txid]["output"] as Uint8List);
}
// Add transaction output
for (var i = 0; i < recipients.length; i++) {
txb.addOutput(recipients[i], satoshiAmounts[i]);
}
try {
// Sign the transaction accordingly
for (var i = 0; i < utxosToUse.length; i++) {
final txid = utxosToUse[i].txid;
txb.sign(
vin: i,
keyPair: utxoSigningData[txid]["keyPair"] as ECPair,
witnessValue: utxosToUse[i].value,
redeemScript: utxoSigningData[txid]["redeemScript"] as Uint8List?,
);
}
} catch (e, s) {
Logging.instance.log("Caught exception while signing transaction: $e\n$s",
level: LogLevel.Error);
rethrow;
}
final builtTx = txb.build();
final vSize = builtTx.virtualSize();
return {"hex": builtTx.toHex(), "vSize": vSize};
}
@override
Future<void> updateNode(bool shouldRefresh) async {
final failovers = NodeService()
.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 (DB.instance.get<dynamic>(boxName: walletId, key: "id") != null) {
throw Exception(
"Attempted to initialize a new wallet using an existing wallet ID!");
}
await _prefs.init();
try {
await _generateNewWallet();
} catch (e, s) {
Logging.instance.log("Exception rethrown from initializeNew(): $e\n$s",
level: LogLevel.Fatal);
rethrow;
}
await Future.wait([
DB.instance.put<dynamic>(boxName: walletId, key: "id", value: _walletId),
_getLelantusTransactionData().then((lelantusTxData) =>
_lelantusTransactionData = Future(() => lelantusTxData)),
DB.instance
.put<dynamic>(boxName: walletId, key: "isFavorite", value: false),
]);
}
@override
Future<void> initializeExisting() async {
Logging.instance.log(
"Opening existing $_walletId ${coin.prettyName} wallet.",
level: LogLevel.Info);
if ((DB.instance.get<dynamic>(boxName: walletId, key: "id") as String?) ==
null) {
throw Exception(
"Attempted to initialize an existing wallet using an unknown wallet ID!");
}
await _prefs.init();
final data =
DB.instance.get<dynamic>(boxName: walletId, key: "latest_tx_model")
as models.TransactionData?;
if (data != null) {
_transactionData = Future(() => data);
}
}
Future<bool> refreshIfThereIsNewData() async {
if (longMutex) return false;
if (_hasCalledExit) return false;
Logging.instance
.log("$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) {
var allOwnAddresses = await this.allOwnAddresses;
List<Map<String, dynamic>> allTxs =
await _fetchHistory(allOwnAddresses);
models.TransactionData txData = await _txnData;
for (Map<String, dynamic> transaction in allTxs) {
if (txData.findTransaction(transaction['tx_hash'] as String) ==
null) {
Logging.instance.log(
" txid not found in address history already ${transaction['tx_hash']}",
level: LogLevel.Info);
needsRefresh = true;
break;
}
}
}
return needsRefresh;
} catch (e, s) {
Logging.instance.log(
"Exception caught in refreshIfThereIsNewData: $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<void> getAllTxsToWatch(
models.TransactionData txData,
models.TransactionData lTxData,
) async {
if (_hasCalledExit) return;
Logging.instance.log("$walletName periodic", level: LogLevel.Info);
List<models.Transaction> unconfirmedTxnsToNotifyPending = [];
List<models.Transaction> unconfirmedTxnsToNotifyConfirmed = [];
for (models.TransactionChunk chunk in txData.txChunks) {
for (models.Transaction tx in chunk.transactions) {
models.Transaction? lTx = lTxData.findTransaction(tx.txid);
if (tx.confirmedStatus) {
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[0].txid.isEmpty) &&
lTx.confirmedStatus == false &&
tx.txType == "Received") {
// 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 (models.TransactionChunk chunk in txData.txChunks) {
for (models.Transaction tx in chunk.transactions) {
if (!tx.confirmedStatus && tx.inputs[0].txid.isNotEmpty) {
// Get all normal txs that are at 0 confirmations
unconfirmedTxnsToNotifyPending
.removeWhere((e) => e.txid == tx.inputs[0].txid);
Logging.instance.log("removed tx: ${tx.txid}", level: LogLevel.Info);
}
}
}
for (models.TransactionChunk chunk in lTxData.txChunks) {
for (models.Transaction lTX in chunk.transactions) {
models.Transaction? tx = txData.findTransaction(lTX.txid);
if (tx == null) {
// if this is a ltx transaction that is unconfirmed and not represented in the normal transaction set.
if (!lTX.confirmedStatus) {
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) {
switch (tx.txType) {
case "Received":
unawaited(
NotificationApi.showNotification(
title: "Incoming transaction",
body: walletName,
walletId: walletId,
iconAssetName: Assets.svg.iconFor(coin: coin),
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
shouldWatchForUpdates: tx.confirmations < MINIMUM_CONFIRMATIONS,
coinName: coin.name,
txid: tx.txid,
confirmations: tx.confirmations,
requiredConfirmations: MINIMUM_CONFIRMATIONS,
),
);
await txTracker.addNotifiedPending(tx.txid);
break;
case "Sent":
unawaited(
NotificationApi.showNotification(
title: "Outgoing transaction",
body: walletName,
walletId: walletId,
iconAssetName: Assets.svg.iconFor(coin: coin),
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
shouldWatchForUpdates: tx.confirmations < MINIMUM_CONFIRMATIONS,
coinName: coin.name,
txid: tx.txid,
confirmations: tx.confirmations,
requiredConfirmations: MINIMUM_CONFIRMATIONS,
),
);
await txTracker.addNotifiedPending(tx.txid);
break;
default:
break;
}
}
for (final tx in unconfirmedTxnsToNotifyConfirmed) {
if (tx.txType == "Received") {
unawaited(
NotificationApi.showNotification(
title: "Incoming transaction confirmed",
body: walletName,
walletId: walletId,
iconAssetName: Assets.svg.iconFor(coin: coin),
date: DateTime.fromMillisecondsSinceEpoch(tx.timestamp * 1000),
shouldWatchForUpdates: false,
coinName: coin.name,
),
);
await txTracker.addNotifiedConfirmed(tx.txid);
} else if (tx.txType == "Sent" && tx.subType == "join") {
unawaited(
NotificationApi.showNotification(
title: "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) {
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: ${coin.name}");
}
// if (_networkType == BasicNetworkType.main) {
// if (features['genesis_hash'] != GENESIS_HASH_MAINNET) {
// throw Exception("genesis hash does not match!");
// }
// } else if (_networkType == BasicNetworkType.test) {
// if (features['genesis_hash'] != GENESIS_HASH_TESTNET) {
// throw Exception("genesis hash does not match!");
// }
// }
}
// this should never fail as overwriting a mnemonic is big bad
assert((await _secureStore.read(key: '${_walletId}_mnemonic')) == null);
await _secureStore.write(
key: '${_walletId}_mnemonic',
value: bip39.generateMnemonic(strength: 256));
// Set relevant indexes
await DB.instance
.put<dynamic>(boxName: walletId, key: 'receivingIndex', value: 0);
await DB.instance
.put<dynamic>(boxName: walletId, key: 'changeIndex', value: 0);
await DB.instance
.put<dynamic>(boxName: walletId, key: 'mintIndex', value: 0);
await DB.instance.put<dynamic>(
boxName: walletId,
key: 'blocked_tx_hashes',
value: [
"0xdefault"
]); // A list of transaction hashes to represent frozen utxos in wallet
// initialize address book entries
await DB.instance.put<dynamic>(
boxName: walletId,
key: 'addressBookEntries',
value: <String, String>{});
await DB.instance
.put<dynamic>(boxName: walletId, key: 'jindex', value: <dynamic>[]);
// Generate and add addresses to relevant arrays
final initialReceivingAddress = await _generateAddressForChain(0, 0);
final initialChangeAddress = await _generateAddressForChain(1, 0);
await addToAddressesArrayForChain(initialReceivingAddress, 0);
await addToAddressesArrayForChain(initialChangeAddress, 1);
_currentReceivingAddress = Future(() => initialReceivingAddress);
}
bool refreshMutex = false;
@override
bool get isRefreshing => refreshMutex;
/// Refreshes display data for the wallet
@override
Future<void> refresh() async {
if (refreshMutex) {
Logging.instance.log("$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 _secureStore.read(key: '${_walletId}_mnemonic');
await fillAddresses(mnemonic!,
numberOfThreads: Platform.numberOfProcessors - isolates.length - 1);
}
await checkReceivingAddressForTransactions();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.1, walletId));
final newUtxoData = _fetchUtxoData();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.2, walletId));
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.25, walletId));
final newTxData = _fetchTransactionData();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.35, walletId));
final feeObj = _getFees();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.50, walletId));
_utxoData = Future(() => newUtxoData);
_transactionData = Future(() => newTxData);
_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));
// await autoMint();
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.90, walletId));
var balance = await _getFullBalance();
_balances = Future(() => balance);
GlobalEventBus.instance.fire(RefreshPercentChangedEvent(0.95, walletId));
var txData = (await _txnData);
var lTxData = (await lelantusTransactionData);
await getAllTxsToWatch(txData, lTxData);
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 = await availableBalance;
int spendAmount =
(balance * Decimal.fromInt(Constants.satsPerCoin)).toBigInt().toInt();
int fee = await estimateJoinSplitFee(spendAmount);
return fee;
}
Future<List<DartLelantusEntry>> _getLelantusEntry() async {
final mnemonic = await _secureStore.read(key: '${_walletId}_mnemonic');
final List<LelantusCoin> lelantusCoins = await _getUnspentCoins();
final root = await compute(
getBip32RootWrapper,
Tuple2(
mnemonic!,
_network,
),
);
final waitLelantusEntries = lelantusCoins.map((coin) async {
final keyPair = await compute(
getBip32NodeFromRootWrapper,
Tuple3(
MINT_INDEX,
coin.index,
root,
),
);
if (keyPair.privateKey == null) {
Logging.instance.log("error bad key", level: LogLevel.Error);
return DartLelantusEntry(1, 0, 0, 0, 0, '');
}
final String privateKey = Format.uint8listToString(keyPair.privateKey!);
return DartLelantusEntry(coin.isUsed ? 1 : 0, 0, coin.anonymitySetId,
coin.value, coin.index, privateKey);
}).toList();
final lelantusEntries = await Future.wait(waitLelantusEntries);
if (lelantusEntries.isNotEmpty) {
lelantusEntries.removeWhere((element) => element.amount == 0);
}
return lelantusEntries;
}
List<Map<dynamic, LelantusCoin>> getLelantusCoinMap() {
final _l = DB.instance
.get<dynamic>(boxName: walletId, key: '_lelantus_coins') as List?;
final List<Map<dynamic, LelantusCoin>> lelantusCoins = [];
for (var el in _l ?? []) {
lelantusCoins.add({el.keys.first: el.values.first as LelantusCoin});
}
return lelantusCoins;
}
Future<List<LelantusCoin>> _getUnspentCoins() async {
final List<Map<dynamic, LelantusCoin>> lelantusCoins = getLelantusCoinMap();
if (lelantusCoins.isNotEmpty) {
lelantusCoins.removeWhere((element) =>
element.values.any((elementCoin) => elementCoin.value == 0));
}
final jindexes =
DB.instance.get<dynamic>(boxName: walletId, key: 'jindex') as List?;
final data = await _txnData;
final lelantusData = await lelantusTransactionData;
List<LelantusCoin> coins = [];
List<LelantusCoin> lelantusCoinsList =
lelantusCoins.fold(<LelantusCoin>[], (previousValue, element) {
previousValue.add(element.values.first);
return previousValue;
});
for (int i = 0; i < lelantusCoinsList.length; i++) {
// Logging.instance.log("lelantusCoinsList[$i]: ${lelantusCoinsList[i]}");
final txn = await cachedElectrumXClient.getTransaction(
txHash: lelantusCoinsList[i].txId,
verbose: true,
coin: coin,
);
final confirmations = txn["confirmations"];
bool isUnconfirmed = confirmations is int && confirmations < 1;
if (!jindexes!.contains(lelantusCoinsList[i].index) &&
data.findTransaction(lelantusCoinsList[i].txId) == null) {
isUnconfirmed = true;
}
if ((data.findTransaction(lelantusCoinsList[i].txId) != null &&
!data
.findTransaction(lelantusCoinsList[i].txId)!
.confirmedStatus) ||
(lelantusData.findTransaction(lelantusCoinsList[i].txId) != null &&
!lelantusData
.findTransaction(lelantusCoinsList[i].txId)!
.confirmedStatus)) {
continue;
}
if (!lelantusCoinsList[i].isUsed &&
lelantusCoinsList[i].anonymitySetId != ANONYMITY_SET_EMPTY_ID &&
!isUnconfirmed) {
coins.add(lelantusCoinsList[i]);
}
}
return coins;
}
// index 0 and 1 for the funds available to spend.
// index 2 and 3 for all the funds in the wallet (including the undependable ones)
Future<List<Decimal>> _getFullBalance() async {
try {
final List<Map<dynamic, LelantusCoin>> lelantusCoins =
getLelantusCoinMap();
if (lelantusCoins.isNotEmpty) {
lelantusCoins.removeWhere((element) =>
element.values.any((elementCoin) => elementCoin.value == 0));
}
final utxos = await utxoData;
final Decimal price = await firoPrice;
final data = await _txnData;
final lData = await lelantusTransactionData;
final jindexes =
DB.instance.get<dynamic>(boxName: walletId, key: 'jindex') as List?;
int intLelantusBalance = 0;
int unconfirmedLelantusBalance = 0;
for (var element in lelantusCoins) {
element.forEach((key, value) {
final tx = data.findTransaction(value.txId);
models.Transaction? ltx;
ltx = lData.findTransaction(value.txId);
// Logging.instance.log("$value $tx $ltx");
if (!jindexes!.contains(value.index) && tx == null) {
// This coin is not confirmed and may be replaced
} else if (jindexes.contains(value.index) &&
tx == null &&
!value.isUsed &&
ltx != null &&
!ltx.confirmedStatus) {
unconfirmedLelantusBalance += value.value;
} else if (jindexes.contains(value.index) && !value.isUsed) {
intLelantusBalance += value.value;
} else if (!value.isUsed &&
(tx == null ? true : tx.confirmedStatus != false)) {
intLelantusBalance += value.value;
} else if (tx != null && tx.confirmedStatus == false) {
unconfirmedLelantusBalance += value.value;
}
});
}
final int utxosIntValue = utxos.satoshiBalance;
final Decimal utxosValue = Format.satoshisToAmount(utxosIntValue);
List<Decimal> balances = List.empty(growable: true);
Decimal lelantusBalance = Format.satoshisToAmount(intLelantusBalance);
balances.add(lelantusBalance);
balances.add(lelantusBalance * price);
Decimal _unconfirmedLelantusBalance =
Format.satoshisToAmount(unconfirmedLelantusBalance);
balances.add(lelantusBalance + utxosValue + _unconfirmedLelantusBalance);
balances.add(
(lelantusBalance + utxosValue + _unconfirmedLelantusBalance) * price);
int availableSats =
utxos.satoshiBalance - utxos.satoshiBalanceUnconfirmed;
if (availableSats < 0) {
availableSats = 0;
}
balances.add(Format.satoshisToAmount(availableSats));
Logging.instance.log("balances $balances", level: LogLevel.Info);
await DB.instance.put<dynamic>(
boxName: walletId,
key: 'totalBalance',
value: balances[2].toString());
return balances;
} 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 List<UtxoObject> availableOutputs = _outputsList;
final List<UtxoObject?> spendableOutputs = [];
// Build list of spendable outputs and totaling their satoshi amount
for (var i = 0; i < availableOutputs.length; i++) {
if (availableOutputs[i].blocked == false &&
availableOutputs[i].status.confirmed == true &&
!(availableOutputs[i].isCoinbase &&
availableOutputs[i].status.confirmations <= 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;
final dataMap = data.getAllTransactions();
dataMap.forEach((key, value) {
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<UtxoObject> 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 = Format.satoshisToAmount(feesObject.fast);
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 = 0;
var mints = <Map<String, dynamic>>[];
final nextFreeMintIndex =
DB.instance.get<dynamic>(boxName: walletId, key: 'mintIndex') as int;
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 $s",
printFullLength: true,
level: LogLevel.Info);
// return an invalid tx
return "transaction submission failed";
}
}
/// Builds and signs a transaction
Future<Map<String, dynamic>> buildMintTransaction(List<UtxoObject> utxosToUse,
int satoshisPerRecipient, List<Map<String, dynamic>> mintsMap) async {
debugPrint(utxosToUse.toString());
List<String> addressesToDerive = [];
// Populating the addresses to derive
for (var i = 0; i < utxosToUse.length; i++) {
final txid = utxosToUse[i].txid;
final outputIndex = utxosToUse[i].vout;
// txid may not work for this as txid may not always be the same as tx_hash?
final tx = await cachedElectrumXClient.getTransaction(
txHash: txid,
verbose: true,
coin: coin,
);
final vouts = tx["vout"] as List?;
if (vouts != null && outputIndex < vouts.length) {
final address =
vouts[outputIndex]["scriptPubKey"]["addresses"][0] as String?;
if (address != null) {
addressesToDerive.add(address);
}
}
}
List<ECPair> elipticCurvePairArray = [];
List<Uint8List> outputDataArray = [];
final receiveDerivationsString =
await _secureStore.read(key: "${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 =
DB.instance.get<dynamic>(boxName: walletId, key: 'mintIndex') as int;
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 price = await firoPrice;
var builtHex = txb.build();
// return builtHex;
final locale = await Devicelocale.currentLocale;
return {
"transaction": builtHex,
"txid": txId,
"txHex": txHex,
"value": amount - fee,
"fees": Format.satoshisToAmount(fee).toDouble(),
"publicCoin": "",
"height": height,
"txType": "Sent",
"confirmed_status": false,
"amount": Format.satoshisToAmount(amount).toDouble(),
"worthNow": Format.localizedStringAsFixed(
value: ((Decimal.fromInt(amount) * price) /
Decimal.fromInt(Constants.satsPerCoin))
.toDecimal(scaleOnInfinitePrecision: 2),
decimalPlaces: 2,
locale: locale!),
"timestamp": DateTime.now().millisecondsSinceEpoch ~/ 1000,
"subType": "mint",
"mintsMap": mintsMap,
};
}
Future<models.TransactionData> _refreshLelantusData() async {
final List<Map<dynamic, LelantusCoin>> lelantusCoins = getLelantusCoinMap();
final jindexes =
DB.instance.get<dynamic>(boxName: walletId, key: 'jindex') as List?;
// Get all joinsplit transaction ids
final lelantusTxData = await lelantusTransactionData;
final listLelantusTxData = lelantusTxData.getAllTransactions();
List<String> joinsplits = [];
for (final tx in listLelantusTxData.values) {
if (tx.subType == "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);
}
}
}
final currentPrice = await firoPrice;
// Grab the most recent information on all the joinsplits
final locale = await Devicelocale.currentLocale;
final updatedJSplit = await getJMintTransactions(cachedElectrumXClient,
joinsplits, _prefs.currency, coin, currentPrice, locale!);
// update all of joinsplits that are now confirmed.
for (final tx in updatedJSplit) {
final currentTx = listLelantusTxData[tx.txid];
if (currentTx == null) {
// this send was accidentally not included in the list
listLelantusTxData[tx.txid] = tx;
continue;
}
if (currentTx.confirmedStatus != tx.confirmedStatus) {
listLelantusTxData[tx.txid] = tx;
}
}
final txData = await _txnData;
// Logging.instance.log(txData.txChunks);
final listTxData = txData.getAllTransactions();
listTxData.forEach((key, value) {
// 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.txType == "Received" && value.subType != "mint") {
// Every receive other than a mint should be shown. Mints will be collected and shown from the send side
listLelantusTxData[value.txid] = value;
} else if (value.txType == "Sent") {
// all sends should be shown, mints will be displayed correctly in the ui
listLelantusTxData[value.txid] = value;
}
});
// 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 _secureStore.read(key: '${_walletId}_mnemonic');
final mintKeyPair = await compute(
getBip32NodeWrapper,
Tuple4(
MINT_INDEX,
index,
mnemonic!,
_network,
),
);
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 =
DB.instance.get<dynamic>(boxName: walletId, key: 'mintIndex') as int?;
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 = DB.instance
.get<dynamic>(boxName: walletId, key: 'jindex') as List?;
jindexes!.add(index);
await DB.instance
.put<dynamic>(boxName: walletId, key: 'jindex', value: jindexes);
await DB.instance.put<dynamic>(
boxName: walletId, key: 'mintIndex', value: index + 1);
}
await DB.instance.put<dynamic>(
boxName: walletId, key: '_lelantus_coins', value: coins);
// add the send transaction
models.TransactionData data = await lelantusTransactionData;
Map<String, models.Transaction> transactions =
data.getAllTransactions();
transactions[transactionInfo['txid'] as String] =
models.Transaction.fromLelantusJson(transactionInfo);
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 DB.instance.put<dynamic>(
boxName: walletId, key: 'mintIndex', value: index + 1);
}
}
// Logging.instance.log(coins);
await DB.instance.put<dynamic>(
boxName: walletId, key: '_lelantus_coins', value: 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: Format.decimalAmountToSatoshis(fast),
medium: Format.decimalAmountToSatoshis(medium),
slow: Format.decimalAmountToSatoshis(slow),
);
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().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 String currentExternalAddr = await _getCurrentAddressForChain(0);
final int numtxs =
await _getReceivedTxCount(address: currentExternalAddr);
Logging.instance.log(
'Number of txs for current receiving: $currentExternalAddr: $numtxs',
level: LogLevel.Info);
if (numtxs >= 1) {
await incrementAddressIndexForChain(
0); // First increment the receiving index
final newReceivingIndex =
DB.instance.get<dynamic>(boxName: walletId, key: 'receivingIndex')
as int; // Check the new receiving index
final newReceivingAddress = await _generateAddressForChain(0,
newReceivingIndex); // Use new index to derive a new receiving address
await addToAddressesArrayForChain(newReceivingAddress,
0); // Add that new receiving address to the array of receiving addresses
_currentReceivingAddress = Future(() =>
newReceivingAddress); // Set the new receiving address that the service
}
} 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 String currentExternalAddr = await _getCurrentAddressForChain(1);
final int numtxs =
await _getReceivedTxCount(address: currentExternalAddr);
Logging.instance.log(
'Number of txs for current change address: $currentExternalAddr: $numtxs',
level: LogLevel.Info);
if (numtxs >= 1) {
await incrementAddressIndexForChain(
0); // First increment the change index
final newReceivingIndex =
DB.instance.get<dynamic>(boxName: walletId, key: 'changeIndex')
as int; // Check the new change index
final newReceivingAddress = await _generateAddressForChain(0,
newReceivingIndex); // Use new index to derive a new change address
await addToAddressesArrayForChain(newReceivingAddress,
0); // Add that new receiving address to the array of change addresses
}
} 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<String>> _fetchAllOwnAddresses() async {
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;
}
}
Future<models.TransactionData> _fetchTransactionData() async {
final changeAddresses =
DB.instance.get<dynamic>(boxName: walletId, key: 'changeAddresses')
as List<dynamic>;
final List<String> allAddresses = await _fetchAllOwnAddresses();
// Logging.instance.log("receiving addresses: $receivingAddresses");
// Logging.instance.log("change addresses: $changeAddresses");
List<Map<String, dynamic>> allTxHashes = await _fetchHistory(allAddresses);
final cachedTransactions =
DB.instance.get<dynamic>(boxName: walletId, key: 'latest_tx_model')
as models.TransactionData?;
int latestTxnBlockHeight =
DB.instance.get<dynamic>(boxName: walletId, key: "storedTxnDataHeight")
as int? ??
0;
final unconfirmedCachedTransactions =
cachedTransactions?.getAllTransactions() ?? {};
unconfirmedCachedTransactions
.removeWhere((key, value) => value.confirmedStatus);
if (cachedTransactions != null) {
for (final tx in allTxHashes.toList(growable: false)) {
final txHeight = tx["height"] as int;
if (txHeight > 0 &&
txHeight < latestTxnBlockHeight - MINIMUM_CONFIRMATIONS) {
if (unconfirmedCachedTransactions[tx["tx_hash"] as String] == null) {
allTxHashes.remove(tx);
}
}
}
}
List<String> hashes = [];
for (var element in allTxHashes) {
hashes.add(element['tx_hash'] as String);
}
List<Map<String, dynamic>> allTransactions = await fastFetch(hashes);
Logging.instance.log("allTransactions length: ${allTransactions.length}",
level: LogLevel.Info);
// sort thing stuff
final currentPrice = await firoPrice;
final List<Map<String, dynamic>> midSortedArray = [];
final locale = await Devicelocale.currentLocale;
Logging.instance.log("refresh the txs", level: LogLevel.Info);
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;
Map<String, dynamic> midSortedTx = {};
List<dynamic> aliens = [];
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 addresses = output["scriptPubKey"]["addresses"] as List?;
if (addresses != null && addresses.isNotEmpty) {
recipientsArray.add(addresses[0] as String);
}
}
// Logging.instance.log("recipientsArray: $recipientsArray");
final foundInSenders =
allAddresses.any((element) => sendersArray.contains(element));
// 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))
.toBigInt()
.toInt();
}
final address = input["address"];
final value = input["valueSat"];
if (address != null && value != null) {
if (allAddresses.contains(address)) {
inputAmtSentFromWallet += value as int;
}
}
if (value != null) {
inAmount += value as int;
}
}
for (final output in txObject["vout"] as List) {
final addresses = output["scriptPubKey"]["addresses"] as List?;
final value = output["value"];
if (addresses != null && addresses.isNotEmpty) {
final address = addresses[0] as String;
if (value != null) {
if (changeAddresses.contains(address)) {
inputAmtSentFromWallet -= (Decimal.parse(value.toString()) *
Decimal.fromInt(Constants.satsPerCoin))
.toBigInt()
.toInt();
} else {
outAddress = address;
}
}
}
if (value != null) {
outAmount += (Decimal.parse(value.toString()) *
Decimal.fromInt(Constants.satsPerCoin))
.toBigInt()
.toInt();
}
}
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))
.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"];
// Logging.instance.log(address + value.toString());
if (allAddresses.contains(address)) {
outputAmtAddressedToWallet += (Decimal.parse(value.toString()) *
Decimal.fromInt(Constants.satsPerCoin))
.toBigInt()
.toInt();
outAddress = address;
}
}
}
}
final int confirms = txObject["confirmations"] as int? ?? 0;
// create final tx map
midSortedTx["txid"] = txObject["txid"];
midSortedTx["confirmed_status"] = confirms >= MINIMUM_CONFIRMATIONS;
midSortedTx["confirmations"] = confirms;
midSortedTx["timestamp"] = txObject["blocktime"] ??
(DateTime.now().millisecondsSinceEpoch ~/ 1000);
if (foundInSenders) {
midSortedTx["txType"] = "Sent";
midSortedTx["amount"] = inputAmtSentFromWallet;
final String worthNow = Format.localizedStringAsFixed(
value: ((currentPrice * Decimal.fromInt(inputAmtSentFromWallet)) /
Decimal.fromInt(Constants.satsPerCoin))
.toDecimal(scaleOnInfinitePrecision: 2),
decimalPlaces: 2,
locale: locale!);
midSortedTx["worthNow"] = worthNow;
midSortedTx["worthAtBlockTimestamp"] = worthNow;
if (txObject["vout"][0]["scriptPubKey"]["type"] == "lelantusmint") {
midSortedTx["subType"] = "mint";
}
} else {
midSortedTx["txType"] = "Received";
midSortedTx["amount"] = outputAmtAddressedToWallet;
final worthNow = Format.localizedStringAsFixed(
value:
((currentPrice * Decimal.fromInt(outputAmtAddressedToWallet)) /
Decimal.fromInt(Constants.satsPerCoin))
.toDecimal(scaleOnInfinitePrecision: 2),
decimalPlaces: 2,
locale: locale!);
midSortedTx["worthNow"] = worthNow;
midSortedTx["worthAtBlockTimestamp"] = worthNow;
}
midSortedTx["aliens"] = aliens;
midSortedTx["fees"] = fees;
midSortedTx["address"] = outAddress;
midSortedTx["inputSize"] = txObject["vin"].length;
midSortedTx["outputSize"] = txObject["vout"].length;
midSortedTx["inputs"] = txObject["vin"];
midSortedTx["outputs"] = txObject["vout"];
final int height = txObject["height"] as int? ?? 0;
midSortedTx["height"] = height;
if (height >= latestTxnBlockHeight) {
latestTxnBlockHeight = height;
}
midSortedArray.add(midSortedTx);
}
// sort by date ---- //TODO not sure if needed
// shouldn't be any issues with a null timestamp but I got one at some point?
midSortedArray.sort((a, b) {
final aT = a["timestamp"];
final bT = b["timestamp"];
if (aT == null && bT == null) {
return 0;
} else if (aT == null) {
return -1;
} else if (bT == null) {
return 1;
} else {
return (bT as int) - (aT as int);
}
});
// buildDateTimeChunks
final Map<String, dynamic> result = {"dateTimeChunks": <dynamic>[]};
final dateArray = <dynamic>[];
for (int i = 0; i < midSortedArray.length; i++) {
final txObject = midSortedArray[i];
final date =
models.extractDateFromTimestamp(txObject["timestamp"] as int);
final txTimeArray = [txObject["timestamp"], date];
if (dateArray.contains(txTimeArray[1])) {
result["dateTimeChunks"].forEach((dynamic chunk) {
if (models.extractDateFromTimestamp(chunk["timestamp"] as int) ==
txTimeArray[1]) {
if (chunk["transactions"] == null) {
chunk["transactions"] = <Map<String, dynamic>>[];
}
chunk["transactions"].add(txObject);
}
});
} else {
dateArray.add(txTimeArray[1]);
final chunk = {
"timestamp": txTimeArray[0],
"transactions": [txObject],
};
result["dateTimeChunks"].add(chunk);
}
}
final transactionsMap = cachedTransactions?.getAllTransactions() ?? {};
transactionsMap
.addAll(models.TransactionData.fromJson(result).getAllTransactions());
final txModel = models.TransactionData.fromMap(transactionsMap);
await DB.instance.put<dynamic>(
boxName: walletId,
key: 'storedTxnDataHeight',
value: latestTxnBlockHeight);
await DB.instance.put<dynamic>(
boxName: walletId, key: 'latest_tx_model', value: txModel);
return txModel;
}
Future<UtxoData> _fetchUtxoData() async {
final List<String> allAddresses = await _fetchAllOwnAddresses();
try {
final fetchedUtxoList = <List<Map<String, dynamic>>>[];
final Map<int, Map<String, List<dynamic>>> batches = {};
const batchSizeMax = 100;
int batchNumber = 0;
for (int i = 0; i < allAddresses.length; i++) {
if (batches[batchNumber] == null) {
batches[batchNumber] = {};
}
final scripthash =
AddressUtils.convertToScriptHash(allAddresses[i], _network);
batches[batchNumber]!.addAll({
scripthash: [scripthash]
});
if (i % batchSizeMax == batchSizeMax - 1) {
batchNumber++;
}
}
for (int i = 0; i < batches.length; i++) {
final response =
await _electrumXClient.getBatchUTXOs(args: batches[i]!);
for (final entry in response.entries) {
if (entry.value.isNotEmpty) {
fetchedUtxoList.add(entry.value);
}
}
}
final priceData =
await _priceAPI.getPricesAnd24hChange(baseCurrency: _prefs.currency);
Decimal currentPrice = priceData[coin]?.item1 ?? Decimal.zero;
final List<Map<String, dynamic>> outputArray = [];
int satoshiBalance = 0;
int satoshiBalancePending = 0;
for (int i = 0; i < fetchedUtxoList.length; i++) {
for (int j = 0; j < fetchedUtxoList[i].length; j++) {
int value = fetchedUtxoList[i][j]["value"] as int;
satoshiBalance += value;
final txn = await cachedElectrumXClient.getTransaction(
txHash: fetchedUtxoList[i][j]["tx_hash"] as String,
verbose: true,
coin: coin,
);
final Map<String, dynamic> utxo = {};
final int confirmations = txn["confirmations"] as int? ?? 0;
final bool confirmed = confirmations >= MINIMUM_CONFIRMATIONS;
if (!confirmed) {
satoshiBalancePending += value;
}
utxo["txid"] = txn["txid"];
utxo["vout"] = fetchedUtxoList[i][j]["tx_pos"];
utxo["value"] = value;
utxo["status"] = <String, dynamic>{};
utxo["status"]["confirmed"] = confirmed;
utxo["status"]["confirmations"] = confirmations;
utxo["status"]["confirmed"] =
txn["confirmations"] == null ? false : txn["confirmations"] > 0;
utxo["status"]["block_height"] = fetchedUtxoList[i][j]["height"];
utxo["status"]["block_hash"] = txn["blockhash"];
utxo["status"]["block_time"] = txn["blocktime"];
final fiatValue = ((Decimal.fromInt(value) * currentPrice) /
Decimal.fromInt(Constants.satsPerCoin))
.toDecimal(scaleOnInfinitePrecision: 2);
utxo["rawWorth"] = fiatValue;
utxo["fiatWorth"] = fiatValue.toString();
utxo["is_coinbase"] = txn['vin'][0]['coinbase'] != null;
outputArray.add(utxo);
}
}
Decimal currencyBalanceRaw =
((Decimal.fromInt(satoshiBalance) * currentPrice) /
Decimal.fromInt(Constants.satsPerCoin))
.toDecimal(scaleOnInfinitePrecision: 2);
final Map<String, dynamic> result = {
"total_user_currency": currencyBalanceRaw.toString(),
"total_sats": satoshiBalance,
"total_btc": (Decimal.fromInt(satoshiBalance) /
Decimal.fromInt(Constants.satsPerCoin))
.toDecimal(scaleOnInfinitePrecision: Constants.decimalPlaces)
.toString(),
"outputArray": outputArray,
"unconfirmed": satoshiBalancePending,
};
final dataModel = UtxoData.fromJson(result);
final List<UtxoObject> allOutputs = dataModel.unspentOutputArray;
Logging.instance
.log('Outputs fetched: $allOutputs', level: LogLevel.Info);
await _sortOutputs(allOutputs);
await DB.instance.put<dynamic>(
boxName: walletId, key: 'latest_utxo_model', value: dataModel);
// await DB.instance.put<dynamic>(
// boxName: walletId,
// key: 'totalBalance',
// value: dataModel.satoshiBalance);
return dataModel;
} catch (e, s) {
Logging.instance
.log("Output fetch unsuccessful: $e\n$s", level: LogLevel.Error);
final latestTxModel =
DB.instance.get<dynamic>(boxName: walletId, key: 'latest_utxo_model')
as models.UtxoData?;
if (latestTxModel == null) {
final emptyModel = {
"total_user_currency": "0.00",
"total_sats": 0,
"total_btc": "0",
"outputArray": <dynamic>[]
};
return UtxoData.fromJson(emptyModel);
} else {
Logging.instance
.log("Old output model located", level: LogLevel.Warning);
return latestTxModel;
}
}
}
Future<models.TransactionData> _getLelantusTransactionData() async {
final latestModel = DB.instance.get<dynamic>(
boxName: walletId,
key: 'latest_lelantus_tx_model') as models.TransactionData?;
if (latestModel == null) {
final emptyModel = {"dateTimeChunks": <dynamic>[]};
return models.TransactionData.fromJson(emptyModel);
} else {
Logging.instance
.log("Old transaction model located", level: LogLevel.Warning);
return latestModel;
}
}
/// 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 {
if (chain == 0) {
final externalChainArray = (DB.instance.get<dynamic>(
boxName: walletId, key: 'receivingAddresses')) as List<dynamic>;
return externalChainArray.last as String;
} else {
// Here, we assume that chain == 1
final internalChainArray =
(DB.instance.get<dynamic>(boxName: walletId, key: 'changeAddresses'))
as List<dynamic>;
return internalChainArray.last as String;
}
}
Future<void> fillAddresses(String suppliedMnemonic,
{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,
"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<String> _generateAddressForChain(int chain, int index) async {
// final wallet = await Hive.openBox(this._walletId);
final mnemonic = await _secureStore.read(key: '${_walletId}_mnemonic');
Map<String, dynamic>? derivations;
if (chain == 0) {
final receiveDerivationsString =
await _secureStore.read(key: "${walletId}_receiveDerivations");
derivations = Map<String, dynamic>.from(
jsonDecode(receiveDerivationsString ?? "{}") as Map);
} else if (chain == 1) {
final changeDerivationsString =
await _secureStore.read(key: "${walletId}_changeDerivations");
derivations = Map<String, dynamic>.from(
jsonDecode(changeDerivationsString ?? "{}") as Map);
}
if (derivations!.isNotEmpty) {
if (derivations["$index"] == null) {
await fillAddresses(mnemonic!,
numberOfThreads: Platform.numberOfProcessors - isolates.length - 1);
Logging.instance.log("calling _generateAddressForChain recursively",
level: LogLevel.Info);
return _generateAddressForChain(chain, index);
}
return derivations["$index"]['address'] as String;
} else {
final node = await compute(
getBip32NodeWrapper, Tuple4(chain, index, mnemonic!, _network));
return P2PKH(network: _network, data: PaymentData(pubkey: node.publicKey))
.data
.address!;
}
}
/// Increases the index for either the internal or external chain, depending on [chain].
/// [chain] - Use 0 for receiving (external), 1 for change (internal). Should not be any other value!
Future<void> incrementAddressIndexForChain(int chain) async {
if (chain == 0) {
final newIndex =
DB.instance.get<dynamic>(boxName: walletId, key: 'receivingIndex') +
1;
await DB.instance.put<dynamic>(
boxName: walletId, key: 'receivingIndex', value: newIndex);
} else {
// Here we assume chain == 1 since it can only be either 0 or 1
final newIndex =
DB.instance.get<dynamic>(boxName: walletId, key: 'changeIndex') + 1;
await DB.instance
.put<dynamic>(boxName: walletId, key: 'changeIndex', value: newIndex);
}
}
/// Adds [address] to the relevant chain's address array, which is determined by [chain].
/// [address] - Expects a standard native segwit address
/// [chain] - Use 0 for receiving (external), 1 for change (internal). Should not be any other value!
Future<void> addToAddressesArrayForChain(String address, int chain) async {
String chainArray = '';
if (chain == 0) {
chainArray = 'receivingAddresses';
} else {
chainArray = 'changeAddresses';
}
final addressArray =
DB.instance.get<dynamic>(boxName: walletId, key: chainArray);
if (addressArray == null) {
Logging.instance.log(
'Attempting to add the following to array for chain $chain:${[
address
]}',
level: LogLevel.Info);
await DB.instance
.put<dynamic>(boxName: walletId, key: chainArray, value: [address]);
} else {
// Make a deep copy of the existing list
final List<String> newArray = [];
addressArray
.forEach((dynamic _address) => newArray.add(_address as String));
newArray.add(address); // Add the address passed into the method
await DB.instance
.put<dynamic>(boxName: walletId, key: chainArray, value: newArray);
}
}
/// Takes in a list of UtxoObjects and adds a name (dependent on object index within list)
/// and checks for the txid associated with the utxo being blocked and marks it accordingly.
/// Now also checks for output labeling.
Future<void> _sortOutputs(List<UtxoObject> utxos) async {
final blockedHashArray =
DB.instance.get<dynamic>(boxName: walletId, key: 'blocked_tx_hashes')
as List<dynamic>?;
final List<String> lst = [];
if (blockedHashArray != null) {
for (var hash in blockedHashArray) {
lst.add(hash as String);
}
}
final labels =
DB.instance.get<dynamic>(boxName: walletId, key: 'labels') as Map? ??
{};
_outputsList = [];
for (var i = 0; i < utxos.length; i++) {
if (labels[utxos[i].txid] != null) {
utxos[i].txName = labels[utxos[i].txid] as String? ?? "";
} else {
utxos[i].txName = 'Output #$i';
}
if (utxos[i].status.confirmed == false) {
_outputsList.add(utxos[i]);
} else {
if (lst.contains(utxos[i].txid)) {
utxos[i].blocked = true;
_outputsList.add(utxos[i]);
} else if (!lst.contains(utxos[i].txid)) {
_outputsList.add(utxos[i]);
}
}
}
}
@override
Future<void> fullRescan(
int maxUnusedAddressGap,
int maxNumberOfIndexesToCheck,
) async {
Logging.instance.log("Starting full rescan!", level: LogLevel.Info);
// timer?.cancel();
// for (final isolate in isolates.values) {
// isolate.kill(priority: Isolate.immediate);
// }
// isolates.clear();
longMutex = true;
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.syncing,
walletId,
coin,
),
);
// clear cache
await _cachedElectrumXClient.clearSharedTransactionCache(coin: coin);
// back up data
await _rescanBackup();
try {
final mnemonic = await _secureStore.read(key: '${_walletId}_mnemonic');
await _recoverWalletFromBIP32SeedPhrase(mnemonic!, maxUnusedAddressGap);
longMutex = false;
Logging.instance.log("Full rescan complete!", level: LogLevel.Info);
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.synced,
walletId,
coin,
),
);
} catch (e, s) {
GlobalEventBus.instance.fire(
WalletSyncStatusChangedEvent(
WalletSyncStatus.unableToSync,
walletId,
coin,
),
);
// restore from backup
await _rescanRestore();
longMutex = false;
Logging.instance.log("Exception rethrown from fullRescan(): $e\n$s",
level: LogLevel.Error);
rethrow;
}
}
Future<void> _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,
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: ${coin.name}");
}
// if (_networkType == BasicNetworkType.main) {
// if (features['genesis_hash'] != GENESIS_HASH_MAINNET) {
// throw Exception("genesis hash does not match main net!");
// }
// } else if (_networkType == BasicNetworkType.test) {
// if (features['genesis_hash'] != GENESIS_HASH_TESTNET) {
// throw Exception("genesis hash does not match test net!");
// }
// }
}
// this should never fail
if ((await _secureStore.read(key: '${_walletId}_mnemonic')) != null) {
throw Exception("Attempted to overwrite mnemonic on restore!");
}
await _secureStore.write(
key: '${_walletId}_mnemonic', value: mnemonic.trim());
await _recoverWalletFromBIP32SeedPhrase(
mnemonic.trim(), 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, int maxUnusedAddressGap) async {
List<String> receivingAddressArray = [];
List<String> changeAddressArray = [];
int receivingIndex = -1;
int changeIndex = -1;
// The gap limit will be capped at 20
int receivingGapCounter = 0;
int changeGapCounter = 0;
await fillAddresses(suppliedMnemonic,
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;
receivingAddressArray.add(address);
} 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;
changeAddressArray.add(_address);
} 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 String 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 String changeAddress = await _generateAddressForChain(1, 0);
changeAddressArray.add(changeAddress);
}
await DB.instance.put<dynamic>(
boxName: walletId,
key: 'receivingAddresses',
value: receivingAddressArray);
await DB.instance.put<dynamic>(
boxName: walletId, key: 'changeAddresses', value: changeAddressArray);
await DB.instance.put<dynamic>(
boxName: walletId,
key: 'receivingIndex',
value: receivingIndex == -1 ? 0 : receivingIndex);
await DB.instance.put<dynamic>(
boxName: walletId,
key: 'changeIndex',
value: changeIndex == -1 ? 0 : changeIndex);
}
/// Recovers wallet from [suppliedMnemonic]. Expects a valid mnemonic.
Future<void> _recoverWalletFromBIP32SeedPhrase(
String suppliedMnemonic, 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, maxUnusedAddressGap);
await DB.instance
.put<dynamic>(boxName: walletId, key: "id", value: _walletId);
await DB.instance
.put<dynamic>(boxName: walletId, key: "isFavorite", value: 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 _secureStore.read(key: '${_walletId}_mnemonic');
final dataFuture = _txnData;
final String currency = _prefs.currency;
final Decimal currentPrice = await firoPrice;
ReceivePort receivePort = await getIsolate({
"function": "restore",
"mnemonic": mnemonic,
"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 dataFuture), result as Map<dynamic, dynamic>);
await DB.instance.put<dynamic>(
boxName: walletId, key: 'mintIndex', value: message['mintIndex']);
await DB.instance.put<dynamic>(
boxName: walletId,
key: '_lelantus_coins',
value: message['_lelantus_coins']);
await DB.instance.put<dynamic>(
boxName: walletId, key: 'jindex', value: message['jindex']);
final transactionMap =
message["newTxMap"] as Map<String, models.Transaction>;
// Create the joinsplit transactions.
final spendTxs = await getJMintTransactions(
_cachedElectrumXClient,
message["spendTxIds"] as List<String>,
currency,
coin,
currentPrice,
(await Devicelocale.currentLocale)!);
Logging.instance.log(spendTxs, level: LogLevel.Info);
for (var element in spendTxs) {
transactionMap[element.txid] = element;
}
final models.TransactionData newTxData =
models.TransactionData.fromMap(transactionMap);
_lelantusTransactionData = Future(() => newTxData);
await DB.instance.put<dynamic>(
boxName: walletId, key: 'latest_lelantus_tx_model', value: newTxData);
}
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 price = await firoPrice;
final mnemonic = await _secureStore.read(key: '${_walletId}_mnemonic');
final index = DB.instance.get<dynamic>(boxName: walletId, key: 'mintIndex');
final lelantusEntry = await _getLelantusEntry();
final anonymitySets = await fetchAnonymitySets();
final locktime = await getBlockHead(electrumXClient);
final locale = await Devicelocale.currentLocale;
ReceivePort receivePort = await getIsolate({
"function": "createJoinSplit",
"spendAmount": spendAmount,
"address": address,
"subtractFeeFromAmount": subtractFeeFromAmount,
"mnemonic": mnemonic,
"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;
}
}
}
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 {
int fee;
int size;
for (fee = 0;;) {
int currentRequired = spendAmount;
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<int> estimateFeeFor(int satoshiAmount, int feeRate) async {
int fee = await estimateJoinSplitFee(satoshiAmount);
return fee;
}
Future<int> estimateFeeForPublic(int satoshiAmount, int feeRate) async {
final available =
Format.decimalAmountToSatoshis(await availablePublicBalance());
if (available == satoshiAmount) {
return satoshiAmount - sweepAllEstimate(feeRate);
} else if (satoshiAmount <= 0 || satoshiAmount > available) {
return roughFeeEstimate(1, 2, feeRate);
}
int runningBalance = 0;
int inputCount = 0;
for (final output in _outputsList) {
runningBalance += output.value;
inputCount++;
if (runningBalance > satoshiAmount) {
break;
}
}
final oneOutPutFee = roughFeeEstimate(inputCount, 1, feeRate);
final twoOutPutFee = roughFeeEstimate(inputCount, 2, feeRate);
if (runningBalance - satoshiAmount > oneOutPutFee) {
if (runningBalance - satoshiAmount > oneOutPutFee + DUST_LIMIT) {
final change = runningBalance - satoshiAmount - twoOutPutFee;
if (change > DUST_LIMIT &&
runningBalance - satoshiAmount - change == twoOutPutFee) {
return runningBalance - satoshiAmount - change;
} else {
return runningBalance - satoshiAmount;
}
} else {
return runningBalance - satoshiAmount;
}
} else if (runningBalance - satoshiAmount == oneOutPutFee) {
return oneOutPutFee;
} else {
return twoOutPutFee;
}
}
// TODO: correct formula for firo?
int roughFeeEstimate(int inputCount, int outputCount, int feeRatePerKB) {
return ((181 * inputCount) + (34 * outputCount) + 10) *
(feeRatePerKB / 1000).ceil();
}
int sweepAllEstimate(int feeRate) {
int available = 0;
int inputCount = 0;
for (final output in _outputsList) {
if (output.status.confirmed) {
available += output.value;
inputCount++;
}
}
// transaction will only have 1 output minus the fee
final estimatedFee = roughFeeEstimate(inputCount, 1, feeRate);
return available - estimatedFee;
}
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<List<models.Transaction>> getJMintTransactions(
CachedElectrumX cachedClient,
List<String> transactions,
String currency,
Coin coin,
Decimal currentPrice,
String locale,
) async {
try {
List<models.Transaction> txs = [];
List<Map<String, dynamic>> allTransactions =
await fastFetch(transactions);
for (int i = 0; i < allTransactions.length; i++) {
try {
final tx = allTransactions[i];
tx["confirmed_status"] =
tx["confirmations"] != null && tx["confirmations"] as int > 0;
tx["timestamp"] = tx["time"];
tx["txType"] = "Sent";
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"];
tx["inputSize"] = tx["vin"].length;
tx["outputSize"] = tx["vout"].length;
final decimalAmount = Decimal.parse(tx["amount"].toString());
tx["worthNow"] = Format.localizedStringAsFixed(
value: currentPrice * decimalAmount,
locale: locale,
decimalPlaces: 2,
);
tx["worthAtBlockTimestamp"] = tx["worthNow"];
tx["subType"] = "join";
txs.add(models.Transaction.fromLelantusJson(tx));
} 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 {
await incrementAddressIndexForChain(
0); // First increment the receiving index
final newReceivingIndex =
DB.instance.get<dynamic>(boxName: walletId, key: 'receivingIndex')
as int; // Check the new receiving index
final newReceivingAddress = await _generateAddressForChain(0,
newReceivingIndex); // Use new index to derive a new receiving address
await addToAddressesArrayForChain(newReceivingAddress,
0); // Add that new receiving address to the array of receiving addresses
_currentReceivingAddress = Future(() =>
newReceivingAddress); // Set the new receiving address that the service
return true;
} catch (e, s) {
Logging.instance.log(
"Exception rethrown from generateNewAddress(): $e\n$s",
level: LogLevel.Error);
return false;
}
}
Future<Decimal> availablePrivateBalance() async {
return (await balances)[0];
}
Future<Decimal> availablePublicBalance() async {
return (await balances)[4];
}
}
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