cake_wallet/lib/monero/monero_wallet.dart
2020-10-02 20:28:29 +03:00

303 lines
8.4 KiB
Dart

import 'package:flutter/foundation.dart';
import 'package:mobx/mobx.dart';
import 'package:cw_monero/wallet.dart';
import 'package:cw_monero/wallet.dart' as monero_wallet;
import 'package:cw_monero/transaction_history.dart' as transaction_history;
import 'package:cake_wallet/monero/monero_transaction_creation_credentials.dart';
import 'package:cake_wallet/monero/pending_monero_transaction.dart';
import 'package:cake_wallet/monero/monero_wallet_keys.dart';
import 'package:cake_wallet/monero/monero_balance.dart';
import 'package:cake_wallet/monero/monero_transaction_history.dart';
import 'package:cake_wallet/monero/monero_subaddress_list.dart';
import 'package:cake_wallet/monero/monero_account_list.dart';
import 'package:cake_wallet/monero/account.dart';
import 'package:cake_wallet/monero/subaddress.dart';
import 'package:cake_wallet/core/pending_transaction.dart';
import 'package:cake_wallet/core/wallet_base.dart';
import 'package:cake_wallet/entities/sync_status.dart';
import 'package:cake_wallet/entities/wallet_info.dart';
import 'package:cake_wallet/entities/node.dart';
import 'package:cake_wallet/entities/transaction_priority.dart';
part 'monero_wallet.g.dart';
const moneroBlockSize = 1000;
class MoneroWallet = MoneroWalletBase with _$MoneroWallet;
abstract class MoneroWalletBase extends WalletBase<MoneroBalance> with Store {
MoneroWalletBase({String filename, WalletInfo walletInfo})
: transactionHistory = MoneroTransactionHistory(),
accountList = MoneroAccountList(),
subaddressList = MoneroSubaddressList(),
super(walletInfo) {
_filename = filename;
balance = MoneroBalance(
fullBalance: monero_wallet.getFullBalance(accountIndex: 0),
unlockedBalance: monero_wallet.getFullBalance(accountIndex: 0));
_onAccountChangeReaction = reaction((_) => account, (Account account) {
subaddressList.update(accountIndex: account.id);
subaddress = subaddressList.subaddresses.first;
address = subaddress.address;
});
_cachedRefreshHeight = 0;
}
@override
final MoneroTransactionHistory transactionHistory;
@observable
Account account;
@observable
Subaddress subaddress;
@override
@observable
SyncStatus syncStatus;
@override
@observable
String address;
@override
@observable
MoneroBalance balance;
@override
String get seed => monero_wallet.getSeed();
@override
MoneroWalletKeys get keys => MoneroWalletKeys(
privateSpendKey: monero_wallet.getSecretSpendKey(),
privateViewKey: monero_wallet.getSecretViewKey(),
publicSpendKey: monero_wallet.getPublicSpendKey(),
publicViewKey: monero_wallet.getPublicViewKey());
final MoneroSubaddressList subaddressList;
final MoneroAccountList accountList;
String _filename;
SyncListner _listener;
ReactionDisposer _onAccountChangeReaction;
int _cachedRefreshHeight;
Future<void> init() async {
await accountList.update();
account = accountList.accounts.first;
subaddressList.update(accountIndex: account.id ?? 0);
subaddress = subaddressList.getAll().first;
balance = MoneroBalance(
fullBalance: monero_wallet.getFullBalance(accountIndex: account.id),
unlockedBalance:
monero_wallet.getFullBalance(accountIndex: account.id));
address = subaddress.address;
_setListeners();
await transactionHistory.update();
}
void close() {
_listener?.stop();
_onAccountChangeReaction?.reaction?.dispose();
}
@override
Future<void> connectToNode({@required Node node}) async {
try {
syncStatus = ConnectingSyncStatus();
await monero_wallet.setupNode(
address: node.uri,
login: node.login,
password: node.password,
useSSL: false,
// FIXME: hardcoded value
isLightWallet: false); // FIXME: hardcoded value
syncStatus = ConnectedSyncStatus();
} catch (e) {
syncStatus = FailedSyncStatus();
print(e);
}
}
@override
Future<void> startSync() async {
try {
_setInitialHeight();
} catch (_) {}
try {
syncStatus = StartingSyncStatus();
monero_wallet.startRefresh();
} catch (e) {
syncStatus = FailedSyncStatus();
print(e);
rethrow;
}
}
@override
Future<PendingTransaction> createTransaction(Object credentials) async {
final _credentials = credentials as MoneroTransactionCreationCredentials;
final pendingTransactionDescription =
await transaction_history.createTransaction(
address: _credentials.address,
paymentId: _credentials.paymentId,
amount: _credentials.amount,
priorityRaw: _credentials.priority.serialize(),
accountIndex: account.id);
return PendingMoneroTransaction(pendingTransactionDescription);
}
@override
double calculateEstimatedFee(TransactionPriority priority) {
// FIXME: hardcoded value;
if (priority == TransactionPriority.slow) {
return 0.00002459;
}
if (priority == TransactionPriority.regular) {
return 0.00012305;
}
if (priority == TransactionPriority.medium) {
return 0.00024503;
}
if (priority == TransactionPriority.fast) {
return 0.00061453;
}
if (priority == TransactionPriority.fastest) {
return 0.0260216;
}
return 0;
}
@override
Future<void> save() async {
await monero_wallet.store();
}
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({int height}) async {
walletInfo.restoreHeight = height;
walletInfo.isRecovery = true;
monero_wallet.setRefreshFromBlockHeight(height: height);
monero_wallet.rescanBlockchainAsync();
await startSync();
_askForUpdateBalance();
await _askForUpdateTransactionHistory();
await save();
await walletInfo.save();
}
void _setListeners() {
_listener?.stop();
_listener = monero_wallet.setListeners(
_onNewBlock, _onNeedToRefresh, _onNewTransaction);
_listener.start();
}
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 fullBalance = _getFullBalance();
final unlockedBalance = _getUnlockedBalance();
if (balance.fullBalance != fullBalance ||
balance.unlockedBalance != unlockedBalance) {
balance = MoneroBalance(
fullBalance: fullBalance, unlockedBalance: unlockedBalance);
}
}
Future<void> _askForUpdateTransactionHistory() async {
await transactionHistory.update();
}
int _getFullBalance() =>
monero_wallet.getFullBalance(accountIndex: account.id);
int _getUnlockedBalance() =>
monero_wallet.getUnlockedBalance(accountIndex: account.id);
void _onNewBlock(int height, int blocksLeft, double ptc) =>
syncStatus = SyncingSyncStatus(blocksLeft, ptc);
Future _onNeedToRefresh() async {
if (syncStatus is FailedSyncStatus) {
return;
}
syncStatus = SyncedSyncStatus();
if (walletInfo.isRecovery) {
_askForUpdateTransactionHistory();
_askForUpdateBalance();
}
final currentHeight = getCurrentHeight();
final nodeHeight = monero_wallet.getNodeHeightSync();
if (walletInfo.isRecovery &&
(nodeHeight - currentHeight < moneroBlockSize)) {
await setAsRecovered();
}
if (currentHeight - _cachedRefreshHeight > moneroBlockSize) {
_cachedRefreshHeight = currentHeight;
await save();
}
}
void _onNewTransaction() {
_askForUpdateBalance();
_askForUpdateTransactionHistory();
}
}