mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2025-01-05 10:29:23 +00:00
420 lines
13 KiB
Dart
420 lines
13 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:bitbox/bitbox.dart';
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import 'package:bitcoin_base/bitcoin_base.dart';
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import 'package:breez_sdk/breez_sdk.dart';
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import 'package:breez_sdk/bridge_generated.dart';
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import 'package:cw_bitcoin/bitcoin_mnemonic.dart';
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import 'package:cw_bitcoin/electrum_wallet_snapshot.dart';
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import 'package:cw_core/crypto_currency.dart';
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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';
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import 'package:cw_core/sync_status.dart';
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import 'package:cw_core/transaction_direction.dart';
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import 'package:cw_core/unspent_coins_info.dart';
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import 'package:cw_lightning/lightning_balance.dart';
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import 'package:cw_lightning/lightning_transaction_info.dart';
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import 'package:hive/hive.dart';
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import 'package:mobx/mobx.dart';
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import 'package:flutter/foundation.dart';
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import 'package:bitcoin_flutter/bitcoin_flutter.dart' as bitcoin;
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import 'package:cw_core/wallet_info.dart';
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import 'package:cw_bitcoin/bitcoin_address_record.dart';
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import 'package:cw_bitcoin/bitcoin_wallet_addresses.dart';
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import 'package:cw_lightning/.secrets.g.dart' as secrets;
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import 'package:cw_bitcoin/electrum_wallet.dart';
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import 'package:bip39/bip39.dart' as bip39;
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part 'lightning_wallet.g.dart';
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class LightningWallet = LightningWalletBase with _$LightningWallet;
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abstract class LightningWalletBase extends ElectrumWallet with Store {
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bool _isTransactionUpdating;
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@override
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@observable
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SyncStatus syncStatus;
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LightningWalletBase({
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required String mnemonic,
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required String password,
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required WalletInfo walletInfo,
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required Box<UnspentCoinsInfo> unspentCoinsInfo,
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required Uint8List seedBytes,
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String? addressPageType,
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List<BitcoinAddressRecord>? initialAddresses,
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LightningBalance? initialBalance,
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Map<String, int>? initialRegularAddressIndex,
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Map<String, int>? initialChangeAddressIndex,
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}) : _isTransactionUpdating = false,
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syncStatus = NotConnectedSyncStatus(),
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_balance = ObservableMap<CryptoCurrency, LightningBalance>(),
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mnemonic = mnemonic,
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super(
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password: password,
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walletInfo: walletInfo,
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unspentCoinsInfo: unspentCoinsInfo,
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networkType: bitcoin.bitcoin,
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initialAddresses: initialAddresses,
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initialBalance: initialBalance,
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seedBytes: seedBytes,
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currency: CryptoCurrency.btcln,
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) {
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_balance[CryptoCurrency.btcln] =
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initialBalance ?? LightningBalance(confirmed: 0, unconfirmed: 0, frozen: 0);
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String derivationPath = walletInfo.derivationInfo!.derivationPath!;
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String sideDerivationPath = derivationPath.substring(0, derivationPath.length - 1) + "1";
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final hd = bitcoin.HDWallet.fromSeed(seedBytes, network: networkType);
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walletAddresses = BitcoinWalletAddresses(
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walletInfo,
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initialAddresses: initialAddresses,
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initialRegularAddressIndex: initialRegularAddressIndex,
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initialChangeAddressIndex: initialChangeAddressIndex,
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mainHd: hd.derivePath(derivationPath),
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sideHd: hd.derivePath(sideDerivationPath),
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network: network,
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);
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// initialize breez:
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try {
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setupBreez(seedBytes);
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} catch (e) {
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print("Error initializing Breez: $e");
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}
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autorun((_) {
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this.walletAddresses.isEnabledAutoGenerateSubaddress = this.isEnabledAutoGenerateSubaddress;
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});
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}
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late final ObservableMap<CryptoCurrency, LightningBalance> _balance;
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StreamSubscription<List<Payment>>? _paymentsSub;
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StreamSubscription<NodeState?>? _nodeStateSub;
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StreamSubscription<LogEntry>? _logStream;
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@override
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@computed
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ObservableMap<CryptoCurrency, LightningBalance> get balance => _balance;
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static Future<LightningWallet> create(
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{required String mnemonic,
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required String password,
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required WalletInfo walletInfo,
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required Box<UnspentCoinsInfo> unspentCoinsInfo,
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String? addressPageType,
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List<BitcoinAddressRecord>? initialAddresses,
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LightningBalance? initialBalance,
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Map<String, int>? initialRegularAddressIndex,
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Map<String, int>? initialChangeAddressIndex}) async {
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late final Uint8List seedBytes;
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// electrum:
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if (validateMnemonic(mnemonic)) {
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seedBytes = await mnemonicToSeedBytes(mnemonic);
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// bip39:
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} else if (bip39.validateMnemonic(mnemonic)) {
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seedBytes = await bip39.mnemonicToSeed(mnemonic);
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} else {
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throw Exception("Invalid mnemonic!");
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}
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return LightningWallet(
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mnemonic: mnemonic,
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password: password,
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walletInfo: walletInfo,
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unspentCoinsInfo: unspentCoinsInfo,
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initialAddresses: initialAddresses,
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initialBalance: initialBalance,
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seedBytes: seedBytes,
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initialRegularAddressIndex: initialRegularAddressIndex,
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initialChangeAddressIndex: initialChangeAddressIndex,
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addressPageType: addressPageType,
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);
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}
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static Future<LightningWallet> open({
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required String name,
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required WalletInfo walletInfo,
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required Box<UnspentCoinsInfo> unspentCoinsInfo,
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required String password,
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}) async {
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final snp =
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await ElectrumWalletSnapshot.load(name, walletInfo.type, password, BitcoinNetwork.mainnet);
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print("OPENING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
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return LightningWallet(
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mnemonic: snp.mnemonic!,
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password: password,
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walletInfo: walletInfo,
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unspentCoinsInfo: unspentCoinsInfo,
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initialAddresses: snp.addresses,
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initialBalance: LightningBalance(
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confirmed: snp.balance.confirmed,
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unconfirmed: snp.balance.unconfirmed,
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frozen: snp.balance.frozen,
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),
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seedBytes: await Mnemonic.toSeed(snp.mnemonic!),
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initialRegularAddressIndex: snp.regularAddressIndex,
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initialChangeAddressIndex: snp.changeAddressIndex,
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addressPageType: snp.addressPageType,
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);
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}
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Future<void> _handleNodeState(NodeState? nodeState) async {
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if (nodeState == null) return;
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_balance[CryptoCurrency.btcln] = LightningBalance(
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confirmed: nodeState.maxPayableMsat ~/ 1000,
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unconfirmed: nodeState.maxReceivableMsat ~/ 1000,
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frozen: 0,
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);
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}
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Future<void> _handlePayments(List<Payment> payments) async {
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_isTransactionUpdating = true;
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final txs = convertToTxInfo(payments);
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transactionHistory.addMany(txs);
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_isTransactionUpdating = false;
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}
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@override
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Future<void> renameWalletFiles(String newWalletName) async {
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await stopBreez(true);
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await super.renameWalletFiles(newWalletName);
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await setupBreez(await Mnemonic.toSeed(mnemonic));
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}
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void _logSdkEntries(LogEntry entry) {
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switch (entry.level) {
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case "ERROR":
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case "WARN":
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case "INFO":
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// case "DEBUG":
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// case "TRACE":
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print("BREEZ:${entry.level}: ${entry.line}");
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break;
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}
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}
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Future<void> setupBreez(Uint8List seedBytes) async {
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final sdk = await BreezSDK();
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_logStream?.cancel();
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_logStream = sdk.logStream.listen(_logSdkEntries);
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try {
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if (!(await sdk.isInitialized())) {
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sdk.initialize();
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}
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} catch (e) {
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print("Error initializing Breez: $e");
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return;
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}
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GreenlightCredentials greenlightCredentials = GreenlightCredentials(
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developerKey: base64.decode(secrets.greenlightKey),
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developerCert: base64.decode(secrets.greenlightCert),
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);
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NodeConfig breezNodeConfig = NodeConfig.greenlight(
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config: GreenlightNodeConfig(
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partnerCredentials: greenlightCredentials,
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inviteCode: null,
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),
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);
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Config breezConfig = await sdk.defaultConfig(
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envType: EnvironmentType.Production,
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apiKey: secrets.breezApiKey,
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nodeConfig: breezNodeConfig,
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);
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String workingDir = await pathForWalletDir(name: walletInfo.name, type: type);
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workingDir = "$workingDir/breez/";
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new Directory(workingDir).createSync(recursive: true);
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breezConfig = breezConfig.copyWith(workingDir: workingDir);
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// disconnect if already connected
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try {
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if (await sdk.isInitialized()) {
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await sdk.disconnect();
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}
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} catch (e, s) {
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print("ERROR disconnecting from Breez: $e\n$s");
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}
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try {
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await sdk.connect(
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req: ConnectRequest(
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config: breezConfig,
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seed: seedBytes,
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),
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);
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} catch (e, s) {
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print("Error connecting to Breez: $e\n$s");
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}
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await _nodeStateSub?.cancel();
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_nodeStateSub = sdk.nodeStateStream.listen((event) {
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_handleNodeState(event);
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});
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await _handleNodeState(await sdk.nodeInfo());
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await _paymentsSub?.cancel();
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_paymentsSub = sdk.paymentsStream.listen((List<Payment> payments) {
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_handlePayments(payments);
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});
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await _handlePayments(await sdk.listPayments(req: ListPaymentsRequest()));
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print("initialized breez: ${(await sdk.isInitialized())}");
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}
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Future<void> stopBreez(bool disconnect) async {
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if (disconnect) {
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final sdk = await BreezSDK();
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if (await sdk.isInitialized()) {
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await sdk.disconnect();
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}
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}
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await _nodeStateSub?.cancel();
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await _paymentsSub?.cancel();
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}
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@action
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@override
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Future<void> startSync() async {
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try {
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syncStatus = AttemptingSyncStatus();
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await updateTransactions();
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syncStatus = SyncedSyncStatus();
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} catch (e) {
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print(e);
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syncStatus = FailedSyncStatus();
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rethrow;
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}
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}
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@override
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Future<void> changePassword(String password) {
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throw UnimplementedError("changePassword");
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}
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@action
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@override
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Future<void> connectToNode({required Node node}) async {
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try {
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syncStatus = ConnectingSyncStatus();
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await updateTransactions();
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syncStatus = ConnectedSyncStatus();
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} catch (e) {
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print(e);
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syncStatus = FailedSyncStatus();
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}
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}
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@override
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Future<PendingTransaction> createTransaction(Object credentials) async {
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throw UnimplementedError("createTransaction");
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}
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Future<bool> updateTransactions() async {
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try {
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if (_isTransactionUpdating) {
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return false;
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}
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_isTransactionUpdating = true;
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final transactions = await fetchTransactions();
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transactionHistory.addMany(transactions);
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await transactionHistory.save();
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_isTransactionUpdating = false;
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return true;
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} catch (_) {
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_isTransactionUpdating = false;
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return false;
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}
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}
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Map<String, LightningTransactionInfo> convertToTxInfo(List<Payment> payments) {
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Map<String, LightningTransactionInfo> transactions = {};
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for (Payment tx in payments) {
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if (tx.paymentType == PaymentType.ClosedChannel) {
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continue;
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}
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bool isSend = tx.paymentType == PaymentType.Sent;
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transactions[tx.id] = LightningTransactionInfo(
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isPending: false,
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id: tx.id,
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amount: tx.amountMsat ~/ 1000,
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fee: tx.feeMsat ~/ 1000,
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date: DateTime.fromMillisecondsSinceEpoch(tx.paymentTime * 1000),
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direction: isSend ? TransactionDirection.outgoing : TransactionDirection.incoming,
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);
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}
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return transactions;
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}
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@override
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Future<Map<String, LightningTransactionInfo>> fetchTransactions() async {
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final sdk = await BreezSDK();
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final payments = await sdk.listPayments(req: ListPaymentsRequest());
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final transactions = convertToTxInfo(payments);
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return transactions;
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}
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@override
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Future<void> rescan({
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required int height,
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int? chainTip,
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ScanData? scanData,
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bool? doSingleScan,
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bool? usingElectrs,
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}) async {
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updateTransactions();
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}
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Future<void> init() async {
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await walletAddresses.init();
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await transactionHistory.init();
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await save();
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}
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String toJSON() => json.encode({
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'mnemonic': mnemonic,
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'account_index': walletAddresses.currentReceiveAddressIndexByType,
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'change_address_index': walletAddresses.currentChangeAddressIndexByType,
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'addresses': walletAddresses.allAddresses.map((addr) => addr.toJSON()).toList(),
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'address_page_type': walletInfo.addressPageType == null
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? SegwitAddresType.p2wpkh.toString()
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: walletInfo.addressPageType.toString(),
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'balance': balance[currency]?.toJSON(),
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'network_type': network == BitcoinNetwork.testnet ? 'testnet' : 'mainnet',
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});
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Future<void> updateBalance() async {
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// balance is updated automatically
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}
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String mnemonic;
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@override
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String get seed => mnemonic;
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Future<String> makePath() async => pathForWallet(name: walletInfo.name, type: walletInfo.type);
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@override
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Future<void> close({bool? switchingToSameWalletType}) async {
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try {
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await electrumClient.close();
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} catch (_) {}
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try {
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bool shouldDisconnect = switchingToSameWalletType == null || !switchingToSameWalletType;
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await stopBreez(shouldDisconnect);
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} catch (e, s) {
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print("Error stopping breez: $e\n$s");
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}
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}
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}
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