mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-12-26 21:50:27 +00:00
443 lines
13 KiB
Dart
443 lines
13 KiB
Dart
import 'dart:convert';
|
|
import 'dart:io';
|
|
|
|
import 'package:cw_core/cake_hive.dart';
|
|
import 'package:cw_core/crypto_currency.dart';
|
|
import 'package:cw_core/node.dart';
|
|
import 'package:cw_core/pathForWallet.dart';
|
|
import 'package:cw_core/pending_transaction.dart';
|
|
import 'package:cw_core/pow_node.dart';
|
|
import 'package:cw_core/sync_status.dart';
|
|
import 'package:cw_core/transaction_direction.dart';
|
|
import 'package:cw_core/transaction_priority.dart';
|
|
import 'package:cw_core/wallet_addresses.dart';
|
|
import 'package:cw_core/wallet_info.dart';
|
|
import 'package:cw_nano/file.dart';
|
|
import 'package:cw_core/nano_account.dart';
|
|
import 'package:cw_nano/nano_balance.dart';
|
|
import 'package:cw_nano/nano_client.dart';
|
|
import 'package:cw_nano/nano_transaction_credentials.dart';
|
|
import 'package:cw_nano/nano_transaction_history.dart';
|
|
import 'package:cw_nano/nano_transaction_info.dart';
|
|
import 'package:cw_nano/nano_util.dart';
|
|
import 'package:cw_nano/nano_wallet_keys.dart';
|
|
import 'package:cw_nano/pending_nano_transaction.dart';
|
|
import 'package:mobx/mobx.dart';
|
|
import 'package:hive/hive.dart';
|
|
import 'dart:async';
|
|
import 'package:cw_nano/nano_wallet_addresses.dart';
|
|
import 'package:cw_core/wallet_base.dart';
|
|
import 'package:nanodart/nanodart.dart';
|
|
import 'package:bip39/bip39.dart' as bip39;
|
|
|
|
part 'nano_wallet.g.dart';
|
|
|
|
class NanoWallet = NanoWalletBase with _$NanoWallet;
|
|
|
|
abstract class NanoWalletBase
|
|
extends WalletBase<NanoBalance, NanoTransactionHistory, NanoTransactionInfo> with Store {
|
|
NanoWalletBase({
|
|
required WalletInfo walletInfo,
|
|
required String mnemonic,
|
|
required String password,
|
|
NanoBalance? initialBalance,
|
|
}) : syncStatus = NotConnectedSyncStatus(),
|
|
_password = password,
|
|
_mnemonic = mnemonic,
|
|
_derivationType = walletInfo.derivationType!,
|
|
_isTransactionUpdating = false,
|
|
_client = NanoClient(),
|
|
walletAddresses = NanoWalletAddresses(walletInfo),
|
|
balance = ObservableMap<CryptoCurrency, NanoBalance>.of({
|
|
CryptoCurrency.nano: initialBalance ??
|
|
NanoBalance(currentBalance: BigInt.zero, receivableBalance: BigInt.zero)
|
|
}),
|
|
super(walletInfo) {
|
|
this.walletInfo = walletInfo;
|
|
transactionHistory = NanoTransactionHistory(walletInfo: walletInfo, password: password);
|
|
if (!CakeHive.isAdapterRegistered(NanoAccount.typeId)) {
|
|
CakeHive.registerAdapter(NanoAccountAdapter());
|
|
}
|
|
}
|
|
|
|
final String _mnemonic;
|
|
final String _password;
|
|
final DerivationType _derivationType;
|
|
|
|
String? _privateKey;
|
|
String? _publicAddress;
|
|
String? _seedKey;
|
|
|
|
String? _representativeAddress;
|
|
Timer? _receiveTimer;
|
|
|
|
late NanoClient _client;
|
|
bool _isTransactionUpdating;
|
|
|
|
@override
|
|
NanoWalletAddresses walletAddresses;
|
|
|
|
@override
|
|
@observable
|
|
SyncStatus syncStatus;
|
|
|
|
@override
|
|
@observable
|
|
late ObservableMap<CryptoCurrency, NanoBalance> balance;
|
|
|
|
// initialize the different forms of private / public key we'll need:
|
|
Future<void> init() async {
|
|
final String type = (_derivationType == DerivationType.nano) ? "standard" : "hd";
|
|
|
|
// our "mnemonic" is actually a seedkey:
|
|
if (!_mnemonic.contains(' ')) {
|
|
_seedKey = _mnemonic;
|
|
}
|
|
|
|
if (_seedKey == null) {
|
|
if (_derivationType == DerivationType.nano) {
|
|
_seedKey = bip39.mnemonicToEntropy(_mnemonic).toUpperCase();
|
|
} else {
|
|
_seedKey = await NanoUtil.hdMnemonicListToSeed(_mnemonic.split(' '));
|
|
}
|
|
}
|
|
_privateKey = await NanoUtil.uniSeedToPrivate(_seedKey!, 0, type);
|
|
_publicAddress = await NanoUtil.uniSeedToAddress(_seedKey!, 0, type);
|
|
this.walletInfo.address = _publicAddress!;
|
|
|
|
await walletAddresses.init();
|
|
await transactionHistory.init();
|
|
await save();
|
|
}
|
|
|
|
@override
|
|
int calculateEstimatedFee(TransactionPriority priority, int? amount) {
|
|
return 0; // always 0 :)
|
|
}
|
|
|
|
@override
|
|
Future<void> changePassword(String password) {
|
|
throw UnimplementedError("changePassword");
|
|
}
|
|
|
|
@override
|
|
void close() {
|
|
_client.stop();
|
|
}
|
|
|
|
@action
|
|
@override
|
|
Future<void> connectToNode({required Node node}) async {
|
|
try {
|
|
syncStatus = ConnectingSyncStatus();
|
|
final isConnected = _client.connect(node);
|
|
if (!isConnected) {
|
|
throw Exception("Nano Node connection failed");
|
|
}
|
|
|
|
try {
|
|
await _updateBalance();
|
|
await _updateRep();
|
|
await _receiveAll();
|
|
} catch (e) {
|
|
print(e);
|
|
}
|
|
|
|
syncStatus = ConnectedSyncStatus();
|
|
} catch (e) {
|
|
print(e);
|
|
syncStatus = FailedSyncStatus();
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<void> connectToPowNode({required Node node}) async {
|
|
_client.connectPow(node);
|
|
}
|
|
|
|
@override
|
|
Future<PendingTransaction> createTransaction(Object credentials) async {
|
|
credentials = credentials as NanoTransactionCredentials;
|
|
|
|
BigInt runningAmount = BigInt.zero;
|
|
await _updateBalance();
|
|
BigInt runningBalance = balance[currency]?.currentBalance ?? BigInt.zero;
|
|
|
|
final List<Map<String, String>> blocks = [];
|
|
String? previousHash;
|
|
|
|
for (var txOut in credentials.outputs) {
|
|
late BigInt amt;
|
|
if (txOut.sendAll) {
|
|
amt = balance[currency]?.currentBalance ?? BigInt.zero;
|
|
} else {
|
|
amt = BigInt.tryParse(
|
|
NanoUtil.getAmountAsRaw(txOut.cryptoAmount ?? "0", NanoUtil.rawPerNano)) ??
|
|
BigInt.zero;
|
|
}
|
|
|
|
if (balance[currency]?.currentBalance != null && amt > balance[currency]!.currentBalance) {
|
|
throw Exception("Trying to send more than entire balance!");
|
|
}
|
|
|
|
runningBalance = runningBalance - amt;
|
|
|
|
final block = await _client.constructSendBlock(
|
|
amountRaw: amt.toString(),
|
|
destinationAddress: txOut.extractedAddress ?? txOut.address,
|
|
privateKey: _privateKey!,
|
|
balanceAfterTx: runningBalance,
|
|
previousHash: previousHash,
|
|
);
|
|
previousHash = NanoBlocks.computeStateHash(
|
|
NanoAccountType.NANO,
|
|
block["account"]!,
|
|
block["previous"]!,
|
|
block["representative"]!,
|
|
BigInt.parse(block["balance"]!),
|
|
block["link"]!,
|
|
);
|
|
|
|
blocks.add(block);
|
|
runningAmount += amt;
|
|
}
|
|
|
|
try {
|
|
if (runningAmount > balance[currency]!.currentBalance || runningBalance < BigInt.zero) {
|
|
throw Exception(("Trying to send more than entire balance!"));
|
|
}
|
|
} catch (e) {
|
|
rethrow;
|
|
}
|
|
|
|
return PendingNanoTransaction(
|
|
amount: runningAmount,
|
|
id: "",
|
|
nanoClient: _client,
|
|
blocks: blocks,
|
|
);
|
|
}
|
|
|
|
Future<void> _receiveAll() async {
|
|
await _updateBalance();
|
|
int blocksReceived = await this._client.confirmAllReceivable(
|
|
destinationAddress: _publicAddress!,
|
|
privateKey: _privateKey!,
|
|
);
|
|
|
|
if (blocksReceived > 0) {
|
|
await Future<void>.delayed(Duration(seconds: 3));
|
|
_updateBalance();
|
|
updateTransactions();
|
|
}
|
|
}
|
|
|
|
Future<void> updateTransactions() async {
|
|
try {
|
|
if (_isTransactionUpdating) {
|
|
return;
|
|
}
|
|
|
|
_isTransactionUpdating = true;
|
|
final transactions = await fetchTransactions();
|
|
transactionHistory.clear();
|
|
transactionHistory.addMany(transactions);
|
|
await transactionHistory.save();
|
|
_isTransactionUpdating = false;
|
|
} catch (_) {
|
|
_isTransactionUpdating = false;
|
|
}
|
|
}
|
|
|
|
@override
|
|
Future<Map<String, NanoTransactionInfo>> fetchTransactions() async {
|
|
String address = _publicAddress!;
|
|
|
|
final transactions = await _client.fetchTransactions(address);
|
|
|
|
final Map<String, NanoTransactionInfo> result = {};
|
|
|
|
for (var transactionModel in transactions) {
|
|
result[transactionModel.hash] = NanoTransactionInfo(
|
|
id: transactionModel.hash,
|
|
amountRaw: transactionModel.amount,
|
|
height: transactionModel.height,
|
|
direction: transactionModel.type == "send"
|
|
? TransactionDirection.outgoing
|
|
: TransactionDirection.incoming,
|
|
confirmed: transactionModel.confirmed,
|
|
date: transactionModel.date ?? DateTime.now(),
|
|
confirmations: transactionModel.confirmed ? 1 : 0,
|
|
);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
@override
|
|
NanoWalletKeys get keys {
|
|
return NanoWalletKeys(seedKey: _seedKey!);
|
|
}
|
|
|
|
@override
|
|
String? get privateKey => _seedKey!;
|
|
|
|
@override
|
|
Future<void> rescan({required int height}) async {
|
|
fetchTransactions();
|
|
_updateBalance();
|
|
return;
|
|
}
|
|
|
|
@override
|
|
Future<void> save() async {
|
|
await walletAddresses.updateAddressesInBox();
|
|
final path = await makePath();
|
|
await write(path: path, password: _password, data: toJSON());
|
|
await transactionHistory.save();
|
|
}
|
|
|
|
@override
|
|
String get seed => _mnemonic;
|
|
|
|
String get representative => _representativeAddress ?? "";
|
|
|
|
@action
|
|
@override
|
|
Future<void> startSync() async {
|
|
try {
|
|
syncStatus = AttemptingSyncStatus();
|
|
await _updateBalance();
|
|
await updateTransactions();
|
|
|
|
_receiveTimer?.cancel();
|
|
_receiveTimer = Timer.periodic(const Duration(seconds: 15), (timer) async {
|
|
// get our balance:
|
|
await _updateBalance();
|
|
// if we have anything to receive, process it:
|
|
if (balance[currency]!.receivableBalance > BigInt.zero) {
|
|
await _receiveAll();
|
|
}
|
|
});
|
|
|
|
syncStatus = SyncedSyncStatus();
|
|
} catch (e) {
|
|
print(e);
|
|
syncStatus = FailedSyncStatus();
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<String> makePath() async => pathForWallet(name: walletInfo.name, type: walletInfo.type);
|
|
|
|
String toJSON() => json.encode({
|
|
'seedKey': _seedKey,
|
|
'mnemonic': _mnemonic,
|
|
'currentBalance': balance[currency]?.currentBalance.toString() ?? "0",
|
|
'receivableBalance': balance[currency]?.receivableBalance.toString() ?? "0",
|
|
'derivationType': _derivationType.toString()
|
|
});
|
|
|
|
static Future<NanoWallet> open({
|
|
required String name,
|
|
required String password,
|
|
required WalletInfo walletInfo,
|
|
}) async {
|
|
final path = await pathForWallet(name: name, type: walletInfo.type);
|
|
final jsonSource = await read(path: path, password: password);
|
|
|
|
final data = json.decode(jsonSource) as Map;
|
|
final mnemonic = data['mnemonic'] as String;
|
|
final balance = NanoBalance.fromString(
|
|
formattedCurrentBalance: data['currentBalance'] as String? ?? "0",
|
|
formattedReceivableBalance: data['receivableBalance'] as String? ?? "0");
|
|
|
|
DerivationType derivationType = DerivationType.bip39;
|
|
if (data['derivationType'] == "DerivationType.nano") {
|
|
derivationType = DerivationType.nano;
|
|
}
|
|
|
|
walletInfo.derivationType = derivationType;
|
|
|
|
return NanoWallet(
|
|
walletInfo: walletInfo,
|
|
password: password,
|
|
mnemonic: mnemonic,
|
|
initialBalance: balance,
|
|
);
|
|
// init() should always be run after this!
|
|
}
|
|
|
|
Future<void> _updateBalance() async {
|
|
try {
|
|
balance[currency] = await _client.getBalance(_publicAddress!);
|
|
} catch (e) {
|
|
print("Failed to get balance $e");
|
|
}
|
|
await save();
|
|
}
|
|
|
|
Future<void> _updateRep() async {
|
|
try {
|
|
final accountInfo = await _client.getAccountInfo(_publicAddress!);
|
|
if (accountInfo["error"] != null) {
|
|
// account not found:
|
|
_representativeAddress = NanoClient.DEFAULT_REPRESENTATIVE;
|
|
} else {
|
|
_representativeAddress = accountInfo["representative"] as String;
|
|
}
|
|
} catch (e) {
|
|
throw Exception("Failed to get representative address $e");
|
|
}
|
|
}
|
|
|
|
Future<void> regenerateAddress() async {
|
|
final String type = (_derivationType == DerivationType.nano) ? "standard" : "hd";
|
|
_privateKey =
|
|
await NanoUtil.uniSeedToPrivate(_seedKey!, this.walletAddresses.account!.id, type);
|
|
_publicAddress =
|
|
await NanoUtil.uniSeedToAddress(_seedKey!, this.walletAddresses.account!.id, type);
|
|
|
|
this.walletInfo.address = _publicAddress!;
|
|
this.walletAddresses.address = _publicAddress!;
|
|
}
|
|
|
|
Future<void> changeRep(String address) async {
|
|
try {
|
|
final String hash = await _client.changeRep(
|
|
privateKey: _privateKey!,
|
|
repAddress: address,
|
|
ourAddress: _publicAddress!,
|
|
);
|
|
if (hash.isNotEmpty) {
|
|
_representativeAddress = address;
|
|
}
|
|
} catch (e) {
|
|
throw Exception("Failed to change representative address $e");
|
|
}
|
|
}
|
|
|
|
Future<void>? updateBalance() async => await _updateBalance();
|
|
|
|
@override
|
|
Future<void> renameWalletFiles(String newWalletName) async {
|
|
final currentWalletPath = await pathForWallet(name: walletInfo.name, type: type);
|
|
final currentWalletFile = File(currentWalletPath);
|
|
|
|
final currentDirPath = await pathForWalletDir(name: walletInfo.name, type: type);
|
|
final currentTransactionsFile = File('$currentDirPath/$transactionsHistoryFileName');
|
|
|
|
// Copies current wallet files into new wallet name's dir and files
|
|
if (currentWalletFile.existsSync()) {
|
|
final newWalletPath = await pathForWallet(name: newWalletName, type: type);
|
|
await currentWalletFile.copy(newWalletPath);
|
|
}
|
|
if (currentTransactionsFile.existsSync()) {
|
|
final newDirPath = await pathForWalletDir(name: newWalletName, type: type);
|
|
await currentTransactionsFile.copy('$newDirPath/$transactionsHistoryFileName');
|
|
}
|
|
|
|
// Delete old name's dir and files
|
|
await Directory(currentDirPath).delete(recursive: true);
|
|
}
|
|
}
|