cake_wallet/cw_nano/lib/nano_wallet.dart
2023-07-24 12:56:20 -04:00

495 lines
16 KiB
Dart

import 'dart:async';
import 'dart:io';
import 'package:cw_core/pathForWallet.dart';
import 'package:cw_core/transaction_priority.dart';
import 'package:cw_core/monero_amount_format.dart';
import 'package:cw_monero/monero_transaction_creation_exception.dart';
import 'package:cw_monero/monero_transaction_info.dart';
import 'package:cw_monero/monero_wallet_addresses.dart';
import 'package:cw_core/monero_wallet_utils.dart';
import 'package:cw_monero/api/structs/pending_transaction.dart';
import 'package:mobx/mobx.dart';
import 'package:cw_monero/api/transaction_history.dart'
as monero_transaction_history;
import 'package:cw_monero/api/wallet.dart';
import 'package:cw_monero/api/wallet.dart' as monero_wallet;
import 'package:cw_monero/api/transaction_history.dart' as transaction_history;
import 'package:cw_monero/api/monero_output.dart';
import 'package:cw_monero/monero_transaction_creation_credentials.dart';
import 'package:cw_monero/pending_monero_transaction.dart';
import 'package:cw_core/monero_wallet_keys.dart';
import 'package:cw_core/monero_balance.dart';
import 'package:cw_monero/monero_transaction_history.dart';
import 'package:cw_core/account.dart';
import 'package:cw_core/pending_transaction.dart';
import 'package:cw_core/wallet_base.dart';
import 'package:cw_core/sync_status.dart';
import 'package:cw_core/wallet_info.dart';
import 'package:cw_core/node.dart';
import 'package:cw_core/monero_transaction_priority.dart';
import 'package:cw_core/crypto_currency.dart';
part 'nano_wallet.g.dart';
const moneroBlockSize = 1000;
class NanoWallet = NanoWalletBase with _$NanoWallet;
abstract class NanoWalletBase extends WalletBase<MoneroBalance,
MoneroTransactionHistory, MoneroTransactionInfo> with Store {
NanoWalletBase({required WalletInfo walletInfo})
: balance = ObservableMap<CryptoCurrency, MoneroBalance>.of({
CryptoCurrency.xmr: MoneroBalance(
fullBalance: monero_wallet.getFullBalance(accountIndex: 0),
unlockedBalance: monero_wallet.getFullBalance(accountIndex: 0))
}),
_isTransactionUpdating = false,
_hasSyncAfterStartup = false,
walletAddresses = NanoWalletAddresses(walletInfo),
syncStatus = NotConnectedSyncStatus(),
super(walletInfo) {
transactionHistory = MoneroTransactionHistory();
_onAccountChangeReaction = reaction((_) => walletAddresses.account,
(Account? account) {
if (account == null) {
return;
}
balance = ObservableMap<CryptoCurrency, MoneroBalance>.of(
<CryptoCurrency, MoneroBalance>{
currency: MoneroBalance(
fullBalance: monero_wallet.getFullBalance(accountIndex: account.id),
unlockedBalance:
monero_wallet.getUnlockedBalance(accountIndex: account.id))
});
walletAddresses.updateSubaddressList(accountIndex: account.id);
});
}
static const int _autoSaveInterval = 30;
@override
NanoWalletAddresses walletAddresses;
@override
@observable
SyncStatus syncStatus;
@override
@observable
ObservableMap<CryptoCurrency, MoneroBalance> balance;
@override
String get seed => monero_wallet.getSeed();
@override
NanoWalletKeys get keys => NanoWalletKeys(
privateSpendKey: monero_wallet.getSecretSpendKey(),
privateViewKey: monero_wallet.getSecretViewKey(),
publicSpendKey: monero_wallet.getPublicSpendKey(),
publicViewKey: monero_wallet.getPublicViewKey());
SyncListener? _listener;
ReactionDisposer? _onAccountChangeReaction;
bool _isTransactionUpdating;
bool _hasSyncAfterStartup;
Timer? _autoSaveTimer;
Future<void> init() async {
await walletAddresses.init();
balance = ObservableMap<CryptoCurrency, MoneroBalance>.of(
<CryptoCurrency, MoneroBalance>{
currency: MoneroBalance(
fullBalance: monero_wallet.getFullBalance(accountIndex: walletAddresses.account!.id),
unlockedBalance: monero_wallet.getUnlockedBalance(accountIndex: walletAddresses.account!.id))
});
_setListeners();
await updateTransactions();
if (walletInfo.isRecovery) {
monero_wallet.setRecoveringFromSeed(isRecovery: walletInfo.isRecovery);
if (monero_wallet.getCurrentHeight() <= 1) {
monero_wallet.setRefreshFromBlockHeight(
height: walletInfo.restoreHeight);
}
}
// _autoSaveTimer = Timer.periodic(
// Duration(seconds: _autoSaveInterval),
// (_) async => await save());
}
@override
Future<void>? updateBalance() => null;
@override
void close() {
_listener?.stop();
_onAccountChangeReaction?.reaction.dispose();
_autoSaveTimer?.cancel();
}
@override
Future<void> connectToNode({required Node node}) async {
try {
syncStatus = ConnectingSyncStatus();
await monero_wallet.setupNode(
address: node.uri.toString(),
useSSL: node.isSSL,
isLightWallet: false);
monero_wallet.setTrustedDaemon(node.trusted);
syncStatus = ConnectedSyncStatus();
} catch (e) {
syncStatus = FailedSyncStatus();
print(e);
}
}
@override
Future<void> startSync() async {
try {
_setInitialHeight();
} catch (_) {}
try {
syncStatus = AttemptingSyncStatus();
monero_wallet.startRefresh();
_setListeners();
_listener?.start();
} catch (e) {
syncStatus = FailedSyncStatus();
print(e);
rethrow;
}
}
@override
Future<PendingTransaction> createTransaction(Object credentials) async {
final _credentials = credentials as MoneroTransactionCreationCredentials;
final outputs = _credentials.outputs;
final hasMultiDestination = outputs.length > 1;
final unlockedBalance =
monero_wallet.getUnlockedBalance(accountIndex: walletAddresses.account!.id);
PendingTransactionDescription pendingTransactionDescription;
if (!(syncStatus is SyncedSyncStatus)) {
throw MoneroTransactionCreationException('The wallet is not synced.');
}
if (hasMultiDestination) {
if (outputs.any((item) => item.sendAll
|| (item.formattedCryptoAmount ?? 0) <= 0)) {
throw MoneroTransactionCreationException('You do not have enough XMR to send this amount.');
}
final int totalAmount = outputs.fold(0, (acc, value) =>
acc + (value.formattedCryptoAmount ?? 0));
if (unlockedBalance < totalAmount) {
throw MoneroTransactionCreationException('You do not have enough XMR to send this amount.');
}
final moneroOutputs = outputs.map((output) {
final outputAddress = output.isParsedAddress
? output.extractedAddress
: output.address;
return MoneroOutput(
address: outputAddress!,
amount: output.cryptoAmount!.replaceAll(',', '.'));
}).toList();
pendingTransactionDescription =
await transaction_history.createTransactionMultDest(
outputs: moneroOutputs,
priorityRaw: _credentials.priority.serialize(),
accountIndex: walletAddresses.account!.id);
} else {
final output = outputs.first;
final address = output.isParsedAddress
? output.extractedAddress
: output.address;
final amount = output.sendAll
? null
: output.cryptoAmount!.replaceAll(',', '.');
final formattedAmount = output.sendAll
? null
: output.formattedCryptoAmount;
if ((formattedAmount != null && unlockedBalance < formattedAmount) ||
(formattedAmount == null && unlockedBalance <= 0)) {
final formattedBalance = moneroAmountToString(amount: unlockedBalance);
throw MoneroTransactionCreationException(
'You do not have enough unlocked balance. Unlocked: $formattedBalance. Transaction amount: ${output.cryptoAmount}.');
}
pendingTransactionDescription =
await transaction_history.createTransaction(
address: address!,
amount: amount,
priorityRaw: _credentials.priority.serialize(),
accountIndex: walletAddresses.account!.id);
}
return PendingMoneroTransaction(pendingTransactionDescription);
}
@override
int calculateEstimatedFee(TransactionPriority priority, int? amount) {
// FIXME: hardcoded value;
if (priority is MoneroTransactionPriority) {
switch (priority) {
case MoneroTransactionPriority.slow:
return 24590000;
case MoneroTransactionPriority.automatic:
return 123050000;
case MoneroTransactionPriority.medium:
return 245029999;
case MoneroTransactionPriority.fast:
return 614530000;
case MoneroTransactionPriority.fastest:
return 26021600000;
}
}
return 0;
}
@override
Future<void> save() async {
await walletAddresses.updateAddressesInBox();
await backupWalletFiles(name);
await monero_wallet.store();
}
@override
Future<void> renameWalletFiles(String newWalletName) async {
final currentWalletDirPath = await pathForWalletDir(name: name, type: type);
try {
// -- rename the waller folder --
final currentWalletDir =
Directory(await pathForWalletDir(name: name, type: type));
final newWalletDirPath =
await pathForWalletDir(name: newWalletName, type: type);
await currentWalletDir.rename(newWalletDirPath);
// -- use new waller folder to rename files with old names still --
final renamedWalletPath = newWalletDirPath + '/$name';
final currentCacheFile = File(renamedWalletPath);
final currentKeysFile = File('$renamedWalletPath.keys');
final currentAddressListFile = File('$renamedWalletPath.address.txt');
final newWalletPath =
await pathForWallet(name: newWalletName, type: type);
if (currentCacheFile.existsSync()) {
await currentCacheFile.rename(newWalletPath);
}
if (currentKeysFile.existsSync()) {
await currentKeysFile.rename('$newWalletPath.keys');
}
if (currentAddressListFile.existsSync()) {
await currentAddressListFile.rename('$newWalletPath.address.txt');
}
} catch (e) {
final currentWalletPath = await pathForWallet(name: name, type: type);
final currentCacheFile = File(currentWalletPath);
final currentKeysFile = File('$currentWalletPath.keys');
final currentAddressListFile = File('$currentWalletPath.address.txt');
final newWalletPath =
await pathForWallet(name: newWalletName, type: type);
// Copies current wallet files into new wallet name's dir and files
if (currentCacheFile.existsSync()) {
await currentCacheFile.copy(newWalletPath);
}
if (currentKeysFile.existsSync()) {
await currentKeysFile.copy('$newWalletPath.keys');
}
if (currentAddressListFile.existsSync()) {
await currentAddressListFile.copy('$newWalletPath.address.txt');
}
// Delete old name's dir and files
await Directory(currentWalletDirPath).delete(recursive: true);
}
}
@override
Future<void> changePassword(String password) async {
monero_wallet.setPasswordSync(password);
}
Future<int> getNodeHeight() async => monero_wallet.getNodeHeight();
Future<bool> isConnected() async => monero_wallet.isConnected();
Future<void> setAsRecovered() async {
walletInfo.isRecovery = false;
await walletInfo.save();
}
@override
Future<void> rescan({required int height}) async {
walletInfo.restoreHeight = height;
walletInfo.isRecovery = true;
monero_wallet.setRefreshFromBlockHeight(height: height);
monero_wallet.rescanBlockchainAsync();
await startSync();
_askForUpdateBalance();
walletAddresses.accountList.update();
await _askForUpdateTransactionHistory();
await save();
await walletInfo.save();
}
String getTransactionAddress(int accountIndex, int addressIndex) =>
monero_wallet.getAddress(
accountIndex: accountIndex,
addressIndex: addressIndex);
@override
Future<Map<String, MoneroTransactionInfo>> fetchTransactions() async {
monero_transaction_history.refreshTransactions();
return _getAllTransactions(null).fold<Map<String, MoneroTransactionInfo>>(
<String, MoneroTransactionInfo>{},
(Map<String, MoneroTransactionInfo> acc, MoneroTransactionInfo tx) {
acc[tx.id] = tx;
return acc;
});
}
Future<void> updateTransactions() async {
try {
if (_isTransactionUpdating) {
return;
}
_isTransactionUpdating = true;
final transactions = await fetchTransactions();
transactionHistory.addMany(transactions);
await transactionHistory.save();
_isTransactionUpdating = false;
} catch (e) {
print(e);
_isTransactionUpdating = false;
}
}
String getSubaddressLabel(int accountIndex, int addressIndex) {
return monero_wallet.getSubaddressLabel(accountIndex, addressIndex);
}
List<MoneroTransactionInfo> _getAllTransactions(dynamic _) =>
monero_transaction_history
.getAllTransations()
.map((row) => MoneroTransactionInfo.fromRow(row))
.toList();
void _setListeners() {
_listener?.stop();
_listener = monero_wallet.setListeners(_onNewBlock, _onNewTransaction);
}
void _setInitialHeight() {
if (walletInfo.isRecovery) {
return;
}
final currentHeight = getCurrentHeight();
if (currentHeight <= 1) {
final height = _getHeightByDate(walletInfo.date);
monero_wallet.setRecoveringFromSeed(isRecovery: true);
monero_wallet.setRefreshFromBlockHeight(height: height);
}
}
int _getHeightDistance(DateTime date) {
final distance =
DateTime.now().millisecondsSinceEpoch - date.millisecondsSinceEpoch;
final daysTmp = (distance / 86400).round();
final days = daysTmp < 1 ? 1 : daysTmp;
return days * 1000;
}
int _getHeightByDate(DateTime date) {
final nodeHeight = monero_wallet.getNodeHeightSync();
final heightDistance = _getHeightDistance(date);
if (nodeHeight <= 0) {
return 0;
}
return nodeHeight - heightDistance;
}
void _askForUpdateBalance() {
final unlockedBalance = _getUnlockedBalance();
final fullBalance = _getFullBalance();
if (balance[currency]!.fullBalance != fullBalance ||
balance[currency]!.unlockedBalance != unlockedBalance) {
balance[currency] = MoneroBalance(
fullBalance: fullBalance, unlockedBalance: unlockedBalance);
}
}
Future<void> _askForUpdateTransactionHistory() async =>
await updateTransactions();
int _getFullBalance() =>
monero_wallet.getFullBalance(accountIndex: walletAddresses.account!.id);
int _getUnlockedBalance() =>
monero_wallet.getUnlockedBalance(accountIndex: walletAddresses.account!.id);
void _onNewBlock(int height, int blocksLeft, double ptc) async {
try {
if (walletInfo.isRecovery) {
await _askForUpdateTransactionHistory();
_askForUpdateBalance();
walletAddresses.accountList.update();
}
if (blocksLeft < 100) {
await _askForUpdateTransactionHistory();
_askForUpdateBalance();
walletAddresses.accountList.update();
syncStatus = SyncedSyncStatus();
if (!_hasSyncAfterStartup) {
_hasSyncAfterStartup = true;
await save();
}
if (walletInfo.isRecovery) {
await setAsRecovered();
}
} else {
syncStatus = SyncingSyncStatus(blocksLeft, ptc);
}
} catch (e) {
print(e.toString());
}
}
void _onNewTransaction() async {
try {
await _askForUpdateTransactionHistory();
_askForUpdateBalance();
await Future<void>.delayed(Duration(seconds: 1));
} catch (e) {
print(e.toString());
}
}
}