cake_wallet/cw_ethereum/lib/ethereum_wallet_service.dart

137 lines
4.3 KiB
Dart

import 'dart:io';
import 'package:cw_core/pathForWallet.dart';
import 'package:cw_core/wallet_base.dart';
import 'package:cw_core/wallet_info.dart';
import 'package:cw_core/wallet_service.dart';
import 'package:cw_core/wallet_type.dart';
import 'package:cw_core/encryption_file_utils.dart';
import 'package:cw_ethereum/ethereum_mnemonics.dart';
import 'package:cw_ethereum/ethereum_wallet.dart';
import 'package:cw_ethereum/ethereum_wallet_creation_credentials.dart';
import 'package:hive/hive.dart';
import 'package:bip39/bip39.dart' as bip39;
import 'package:collection/collection.dart';
class EthereumWalletService extends WalletService<EthereumNewWalletCredentials,
EthereumRestoreWalletFromSeedCredentials, EthereumRestoreWalletFromPrivateKey> {
EthereumWalletService(this.walletInfoSource, this.isDirect, this.isFlatpak);
final Box<WalletInfo> walletInfoSource;
final bool isDirect;
final bool isFlatpak;
@override
Future<EthereumWallet> create(EthereumNewWalletCredentials credentials) async {
final strength = credentials.seedPhraseLength == 24 ? 256 : 128;
final mnemonic = bip39.generateMnemonic(strength: strength);
final wallet = EthereumWallet(
walletInfo: credentials.walletInfo!,
mnemonic: mnemonic,
password: credentials.password!,
encryptionFileUtils: encryptionFileUtilsFor(isDirect),
isFlatpak: isFlatpak,
);
await wallet.init();
wallet.addInitialTokens();
await wallet.save();
return wallet;
}
@override
WalletType getType() => WalletType.ethereum;
@override
Future<bool> isWalletExit(String name) async =>
File(await pathForWallet(name: name, type: getType(), isFlatpak: isFlatpak)).existsSync();
@override
Future<EthereumWallet> openWallet(String name, String password) async {
final walletInfo =
walletInfoSource.values.firstWhere((info) => info.id == WalletBase.idFor(name, getType()));
final wallet = await EthereumWalletBase.open(
name: name,
password: password,
walletInfo: walletInfo,
encryptionFileUtils: encryptionFileUtilsFor(isDirect),
isFlatpak: isFlatpak,
);
await wallet.init();
await wallet.save();
return wallet;
}
@override
Future<void> remove(String wallet) async {
File(await pathForWalletDir(name: wallet, type: getType(), isFlatpak: isFlatpak))
.delete(recursive: true);
final walletInfo = walletInfoSource.values
.firstWhereOrNull((info) => info.id == WalletBase.idFor(wallet, getType()))!;
await walletInfoSource.delete(walletInfo.key);
}
@override
Future<EthereumWallet> restoreFromKeys(EthereumRestoreWalletFromPrivateKey credentials) async {
final wallet = EthereumWallet(
password: credentials.password!,
privateKey: credentials.privateKey,
walletInfo: credentials.walletInfo!,
encryptionFileUtils: encryptionFileUtilsFor(isDirect),
isFlatpak: isFlatpak,
);
await wallet.init();
wallet.addInitialTokens();
await wallet.save();
return wallet;
}
@override
Future<EthereumWallet> restoreFromSeed(
EthereumRestoreWalletFromSeedCredentials credentials) async {
if (!bip39.validateMnemonic(credentials.mnemonic)) {
throw EthereumMnemonicIsIncorrectException();
}
final wallet = EthereumWallet(
password: credentials.password!,
mnemonic: credentials.mnemonic,
walletInfo: credentials.walletInfo!,
encryptionFileUtils: encryptionFileUtilsFor(isDirect),
isFlatpak: isFlatpak,
);
await wallet.init();
wallet.addInitialTokens();
await wallet.save();
return wallet;
}
@override
Future<void> rename(String currentName, String password, String newName) async {
final currentWalletInfo = walletInfoSource.values
.firstWhere((info) => info.id == WalletBase.idFor(currentName, getType()));
final currentWallet = await EthereumWalletBase.open(
password: password,
name: currentName,
walletInfo: currentWalletInfo,
encryptionFileUtils: encryptionFileUtilsFor(isDirect),
isFlatpak: isFlatpak,
);
await currentWallet.renameWalletFiles(newName);
final newWalletInfo = currentWalletInfo;
newWalletInfo.id = WalletBase.idFor(newName, getType());
newWalletInfo.name = newName;
await walletInfoSource.put(currentWalletInfo.key, newWalletInfo);
}
}