cake_wallet/cw_zano/lib/zano_wallet.dart

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import 'dart:async';
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import 'dart:convert';
import 'dart:ffi';
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import 'dart:io';
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import 'dart:math';
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import 'package:cw_core/crypto_currency.dart';
import 'package:cw_core/monero_amount_format.dart';
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import 'package:cw_core/monero_wallet_utils.dart';
import 'package:cw_core/node.dart';
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import 'package:cw_core/pathForWallet.dart';
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import 'package:cw_core/pending_transaction.dart';
import 'package:cw_core/sync_status.dart';
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import 'package:cw_core/transaction_priority.dart';
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import 'package:cw_core/wallet_base.dart';
import 'package:cw_core/wallet_info.dart';
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import 'package:cw_zano/api/api_calls.dart';
import 'package:cw_zano/api/model/destination.dart';
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import 'package:cw_zano/api/model/get_recent_txs_and_info_params.dart';
import 'package:cw_zano/api/model/get_wallet_info_result.dart';
import 'package:cw_zano/api/model/get_wallet_status_result.dart';
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import 'package:cw_zano/api/model/history.dart';
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import 'package:cw_zano/api/model/store_result.dart';
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import 'package:cw_zano/api/model/zano_wallet_keys.dart';
import 'package:cw_zano/api/zano_api.dart';
import 'package:cw_zano/exceptions/zano_transaction_creation_exception.dart';
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import 'package:cw_zano/pending_zano_transaction.dart';
import 'package:cw_zano/zano_balance.dart';
import 'package:cw_zano/zano_transaction_credentials.dart';
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import 'package:cw_zano/zano_transaction_history.dart';
import 'package:cw_zano/zano_transaction_info.dart';
import 'package:cw_zano/zano_wallet_addresses.dart';
import 'package:ffi/ffi.dart';
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import 'package:flutter/material.dart';
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import 'package:mobx/mobx.dart';
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part 'zano_wallet.g.dart';
const moneroBlockSize = 1000;
class ZanoWallet = ZanoWalletBase with _$ZanoWallet;
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typedef _load_wallet = Pointer<Utf8> Function(Pointer<Utf8>, Pointer<Utf8>, Int8);
typedef _LoadWallet = Pointer<Utf8> Function(Pointer<Utf8>, Pointer<Utf8>, int);
const int zanoMixin = 10;
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abstract class ZanoWalletBase extends WalletBase<ZanoBalance, ZanoTransactionHistory, ZanoTransactionInfo> with Store {
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ZanoWalletBase(WalletInfo walletInfo)
: balance = ObservableMap.of({CryptoCurrency.zano: ZanoBalance(total: 0, unlocked: 0)}),
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_isTransactionUpdating = false,
_hasSyncAfterStartup = false,
walletAddresses = ZanoWalletAddresses(walletInfo),
syncStatus = NotConnectedSyncStatus(),
super(walletInfo) {
transactionHistory = ZanoTransactionHistory();
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/*_onAccountChangeReaction =
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reaction((_) => walletAddresses.account, (Account? account) {
if (account == null) {
return;
}
balance.addAll(getZanoBalance(accountIndex: account.id));
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/**walletAddresses.updateSubaddressList(accountIndex: account.id);*/
});*/
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}
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List<History> history = [];
String defaultAsssetId = '';
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static const int _autoSaveInterval = 30;
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static const _statusDelivered = 'delivered';
static const _maxAttempts = 10;
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@override
ZanoWalletAddresses walletAddresses;
@override
@observable
SyncStatus syncStatus;
@override
@observable
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ObservableMap<CryptoCurrency, ZanoBalance> balance;
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@override
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String seed = '';
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@override
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ZanoWalletKeys keys = ZanoWalletKeys(privateSpendKey: '', privateViewKey: '', publicSpendKey: '', publicViewKey: '');
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//zano_wallet.SyncListener? _listener;
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/**ReactionDisposer? _onAccountChangeReaction;*/
Timer? _updateSyncInfoTimer;
int _cachedBlockchainHeight = 0;
int _lastKnownBlockHeight = 0;
int _initialSyncHeight = 0;
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bool _isTransactionUpdating;
bool _hasSyncAfterStartup;
Timer? _autoSaveTimer;
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int _hWallet = 0;
int get hWallet => _hWallet;
set hWallet(int value) {
_hWallet = value;
}
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Future<void> init(String address) async {
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await walletAddresses.init();
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await walletAddresses.updateAddress(address);
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///balance.addAll(getZanoBalance(/**accountIndex: walletAddresses.account?.id ?? 0*/));
//_setListeners();
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await updateTransactions();
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_autoSaveTimer = Timer.periodic(Duration(seconds: _autoSaveInterval), (_) async => await save());
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}
@override
Future<void>? updateBalance() => null;
@override
void close() {
_updateSyncInfoTimer?.cancel();
//_listener?.stop();
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/**_onAccountChangeReaction?.reaction.dispose();*/
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_autoSaveTimer?.cancel();
}
@override
Future<void> connectToNode({required Node node}) async {
try {
syncStatus = ConnectingSyncStatus();
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await ApiCalls.setupNode(
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address: "195.201.107.230:33336", // node.uriRaw,
login: "", // node.login,
password: "", // node.password,
useSSL: false, // node.useSSL ?? false,
isLightWallet: false, // FIXME: hardcoded value
/*socksProxyAddress: node.socksProxyAddress*/
);
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//zano_wallet.setTrustedDaemon(node.trusted);
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syncStatus = ConnectedSyncStatus();
} catch (e) {
syncStatus = FailedSyncStatus();
print(e);
}
}
@override
Future<void> startSync() async {
try {
syncStatus = AttemptingSyncStatus();
_cachedBlockchainHeight = 0;
_lastKnownBlockHeight = 0;
_initialSyncHeight = 0;
_updateSyncInfoTimer ??= Timer.periodic(Duration(milliseconds: 1200), (_) async {
/**if (isNewTransactionExist()) {
onNewTransaction?.call();
}*/
GetWalletStatusResult status = getWalletStatus();
// You can call getWalletInfo ONLY if getWalletStatus returns NOT is in long refresh and wallet state is 2 (ready)
if (!status.isInLongRefresh && status.walletState == 2) {
final syncHeight = status.currentWalletHeight;
GetWalletInfoResult result = getWalletInfo();
seed = result.wiExtended.seed;
keys = ZanoWalletKeys(
privateSpendKey: result.wiExtended.spendPrivateKey,
privateViewKey: result.wiExtended.viewPrivateKey,
publicSpendKey: result.wiExtended.spendPublicKey,
publicViewKey: result.wiExtended.viewPublicKey,
);
final _balance = result.wi.balances.first;
defaultAsssetId = _balance.assetInfo.assetId;
balance = ObservableMap.of({CryptoCurrency.zano: ZanoBalance(total: _balance.total, unlocked: _balance.unlocked)});
if (_initialSyncHeight <= 0) {
_initialSyncHeight = syncHeight;
}
final bchHeight = status.currentDaemonHeight;
if (_lastKnownBlockHeight == syncHeight) {
return;
}
_lastKnownBlockHeight = syncHeight;
final track = bchHeight - _initialSyncHeight;
final diff = track - (bchHeight - syncHeight);
final ptc = diff <= 0 ? 0.0 : diff / track;
final left = bchHeight - syncHeight;
if (syncHeight < 0 || left < 0) {
return;
}
// 1. Actual new height; 2. Blocks left to finish; 3. Progress in percents;
_onNewBlock.call(syncHeight, left, ptc);
}
});
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} catch (e) {
syncStatus = FailedSyncStatus();
print(e);
rethrow;
}
}
@override
Future<PendingTransaction> createTransaction(Object credentials) async {
final creds = credentials as ZanoTransactionCredentials;
final outputs = creds.outputs;
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final hasMultiDestination = outputs.length > 1;
final unlockedBalance = balance[CryptoCurrency.zano]?.unlocked ?? 0;
final fee = calculateEstimatedFee(creds.priority);
late List<Destination> destinations;
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if (hasMultiDestination) {
if (outputs.any((output) => output.sendAll || (output.formattedCryptoAmount ?? 0) <= 0)) {
throw ZanoTransactionCreationException("You don't have enough coins.");
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}
final int totalAmount = outputs.fold(0, (acc, value) => acc + (value.formattedCryptoAmount ?? 0));
if (totalAmount + fee > unlockedBalance) {
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throw ZanoTransactionCreationException(
"You don't have enough coins (required: ${moneroAmountToString(amount: totalAmount + fee)}, unlocked ${moneroAmountToString(amount: unlockedBalance)}).");
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}
destinations = outputs
.map((output) => Destination(
amount: output.formattedCryptoAmount ?? 0,
address: output.isParsedAddress ? output.extractedAddress! : output.address,
assetId: defaultAsssetId,
))
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.toList();
} else {
final output = outputs.first;
late int amount;
if (output.sendAll) {
amount = unlockedBalance - fee;
} else {
amount = output.formattedCryptoAmount!;
}
if (amount + fee > unlockedBalance) {
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throw ZanoTransactionCreationException(
"You don't have enough coins (required: ${moneroAmountToString(amount: amount + fee)}, unlocked ${moneroAmountToString(amount: unlockedBalance)}).");
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}
destinations = [
Destination(
amount: amount,
address: output.isParsedAddress ? output.extractedAddress! : output.address,
assetId: defaultAsssetId,
)
];
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}
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destinations.forEach((destination) {
debugPrint('destination ${destination.address} ${destination.amount} ${destination.assetId}');
});
return PendingZanoTransaction(
zanoWallet: this,
destinations: destinations,
fee: fee,
comment: outputs.first.note ?? '',
);
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}
@override
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int calculateEstimatedFee(TransactionPriority priority, [int? amount = null]) {
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return ApiCalls.getCurrentTxFee(priority: priority.raw);
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}
@override
Future<void> save() async {
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try {
await walletAddresses.updateAddressesInBox();
await backupWalletFiles(name);
await store();
} catch (e) {
print('Error while saving Zano wallet file ${e.toString()}');
}
}
Future<void> store() async {
try {
final json = await invokeMethod('store', '{}');
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final map = jsonDecode(json) as Map<String, dynamic>;
if (map['result'] == null || map['result']['result'] == null) {
throw 'store empty response';
}
final _ = StoreResult.fromJson(map['result']['result'] as Map<String, dynamic>);
} catch (e) {
print(e.toString());
}
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}
@override
Future<void> renameWalletFiles(String newWalletName) async {
final currentWalletPath = await pathForWallet(name: name, type: type);
final currentCacheFile = File(currentWalletPath);
final currentKeysFile = File('$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(currentWalletPath).delete(recursive: true);
}
@override
Future<void> changePassword(String password) async {
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ApiCalls.setPassword(hWallet: hWallet, password: password);
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}
Future<void> setAsRecovered() async {
walletInfo.isRecovery = false;
await walletInfo.save();
}
@override
Future<void> rescan({required int height}) async {
walletInfo.restoreHeight = height;
walletInfo.isRecovery = true;
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debugPrint('setRefreshFromBlockHeight height $height');
debugPrint('rescanBlockchainAsync');
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await startSync();
_askForUpdateBalance();
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/**walletAddresses.accountList.update();*/
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await _askForUpdateTransactionHistory();
await save();
await walletInfo.save();
}
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Future<void> _refreshTransactions() async {
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try {
final result = await invokeMethod('get_recent_txs_and_info', GetRecentTxsAndInfoParams(offset: 0, count: 30));
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final map = jsonDecode(result) as Map<String, dynamic>?;
if (map == null) {
print('get_recent_txs_and_info empty response');
return;
}
final resultData = map['result'];
if (resultData == null) {
print('get_recent_txs_and_info empty response');
return;
}
if (resultData['error'] != null) {
print('get_recent_txs_and_info error ${resultData['error']}');
return;
}
final transfers = resultData['result']?['transfers'] as List<dynamic>?;
if (transfers == null) {
print('get_recent_txs_and_info empty transfers');
return;
}
history = transfers.map((e) => History.fromJson(e as Map<String, dynamic>)).toList();
} catch (e) {
print(e.toString());
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}
}
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@override
Future<Map<String, ZanoTransactionInfo>> fetchTransactions() async {
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try {
await _refreshTransactions();
return history.map<ZanoTransactionInfo>((history) => ZanoTransactionInfo.fromHistory(history)).fold<Map<String, ZanoTransactionInfo>>(
<String, ZanoTransactionInfo>{},
(Map<String, ZanoTransactionInfo> acc, ZanoTransactionInfo tx) {
acc[tx.id] = tx;
return acc;
},
);
} catch (e) {
print(e);
return {};
}
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}
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;
}
}
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// List<ZanoTransactionInfo> _getAllTransactions(dynamic _) =>
// zano_transaction_history
// .getAllTransations()
// .map((row) => ZanoTransactionInfo.fromRow(row))
// .toList();
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// void _setListeners() {
// _listener?.stop();
// _listener = zano_wallet.setListeners(_onNewBlock, _onNewTransaction);
// }
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void _askForUpdateBalance() {
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debugPrint('askForUpdateBalance'); // TODO: remove, also remove this method completely
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}
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Future<void> _askForUpdateTransactionHistory() async => await updateTransactions();
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void _onNewBlock(int height, int blocksLeft, double ptc) async {
try {
if (walletInfo.isRecovery) {
await _askForUpdateTransactionHistory();
_askForUpdateBalance();
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/*walletAddresses.accountList.update();*/
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}
if (blocksLeft < 1000) {
await _askForUpdateTransactionHistory();
_askForUpdateBalance();
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/*walletAddresses.accountList.update();*/
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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)); // TODO: ???
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} catch (e) {
print(e.toString());
}
}
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String loadWallet(String path, String password) {
print('load_wallet path $path password $password');
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final result = ApiCalls.loadWallet(path: path, password: password);
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print('load_wallet result $result');
return result;
}
Future<String> invokeMethod(String methodName, Object params) async {
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var invokeResult = ApiCalls.asyncCall(methodName: 'invoke', hWallet: hWallet, params: '{"method": "$methodName","params": ${jsonEncode(params)}}');
var map = jsonDecode(invokeResult) as Map<String, dynamic>;
int attempts = 0;
if (map['job_id'] != null) {
final jobId = map['job_id'] as int;
do {
await Future.delayed(Duration(milliseconds: attempts < 2 ? 100 : 500));
final result = ApiCalls.tryPullResult(jobId);
map = jsonDecode(result) as Map<String, dynamic>;
if (map['status'] != null && map['status'] == _statusDelivered && map['result'] != null) {
return result;
}
} while (++attempts < _maxAttempts);
}
return invokeResult;
}
GetWalletInfoResult getWalletInfo() {
final json = ApiCalls.getWalletInfo(hWallet);
print('wallet info $json'); // TODO: remove
final result = GetWalletInfoResult.fromJson(jsonDecode(json) as Map<String, dynamic>);
return result;
}
GetWalletStatusResult getWalletStatus() {
final json = ApiCalls.getWalletStatus(hWallet: hWallet);
print('wallet status $json'); // TODO: remove
final status = GetWalletStatusResult.fromJson(jsonDecode(json) as Map<String, dynamic>);
return status;
}
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}