stack_wallet/lib/services/wallets_service.dart

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/*
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* This file is part of Stack Wallet.
*
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* Copyright (c) 2023 Cypher Stack
* All Rights Reserved.
* The code is distributed under GPLv3 license, see LICENSE file for details.
* Generated by Cypher Stack on 2023-05-26
*
*/
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import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter_libmonero/monero/monero.dart';
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import 'package:flutter_libmonero/wownero/wownero.dart';
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import 'package:stackwallet/db/hive/db.dart';
import 'package:stackwallet/db/isar/main_db.dart';
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import 'package:stackwallet/services/notifications_service.dart';
import 'package:stackwallet/services/trade_sent_from_stack_service.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
import 'package:stackwallet/utilities/flutter_secure_storage_interface.dart';
import 'package:stackwallet/utilities/logger.dart';
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import 'package:stackwallet/wallets/wallet/impl/epiccash_wallet.dart';
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import 'package:uuid/uuid.dart';
class WalletInfo {
final Coin coin;
final String walletId;
final String name;
const WalletInfo(
{required this.coin, required this.walletId, required this.name});
factory WalletInfo.fromJson(Map<String, dynamic> jsonObject) {
return WalletInfo(
coin: Coin.values.byName(jsonObject["coin"] as String),
walletId: jsonObject["id"] as String,
name: jsonObject["name"] as String,
);
}
Map<String, String> toMap() {
return {
"name": name,
"id": walletId,
"coin": coin.name,
};
}
String toJsonString() {
return jsonEncode(toMap());
}
@override
String toString() {
return "WalletInfo: ${toJsonString()}";
}
}
class WalletsService extends ChangeNotifier {
late final SecureStorageInterface _secureStore;
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Future<Map<String, WalletInfo>>? _walletNames;
Future<Map<String, WalletInfo>> get walletNames =>
_walletNames ??= _fetchWalletNames();
WalletsService({
required SecureStorageInterface secureStorageInterface,
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}) {
_secureStore = secureStorageInterface;
}
// Future<Coin> getWalletCryptoCurrency({required String walletName}) async {
// final id = await getWalletId(walletName);
// final currency = DB.instance.get<dynamic>(
// boxName: DB.boxNameAllWalletsData, key: "${id}_cryptoCurrency");
// return Coin.values.byName(currency as String);
// }
Future<bool> renameWallet({
required String from,
required String to,
required bool shouldNotifyListeners,
}) async {
if (from == to) {
return true;
}
final walletInfo = DB.instance
.get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map;
final info = walletInfo.values.firstWhere(
(element) => element['name'] == from,
orElse: () => <String, String>{}) as Map;
if (info.isEmpty) {
// tried to rename a non existing wallet
Logging.instance
.log("Tried to rename a non existing wallet!", level: LogLevel.Error);
return false;
}
if (from != to &&
(walletInfo.values.firstWhere((element) => element['name'] == to,
orElse: () => <String, String>{}) as Map)
.isNotEmpty) {
// name already exists
Logging.instance.log("wallet with name \"$to\" already exists!",
level: LogLevel.Error);
return false;
}
info["name"] = to;
walletInfo[info['id']] = info;
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData, key: 'names', value: walletInfo);
await refreshWallets(shouldNotifyListeners);
return true;
}
Future<Map<String, WalletInfo>> _fetchWalletNames() async {
final names = DB.instance
.get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
if (names == null) {
Logging.instance.log(
"Fetched wallet 'names' returned null. Setting initializing 'names'",
level: LogLevel.Info);
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: 'names',
value: <String, dynamic>{});
return {};
}
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Logging.instance.log("Fetched wallet names: $names", level: LogLevel.Info);
final mapped = Map<String, dynamic>.from(names);
mapped.removeWhere((name, dyn) {
final jsonObject = Map<String, dynamic>.from(dyn as Map);
try {
Coin.values.byName(jsonObject["coin"] as String);
return false;
} catch (e, s) {
Logging.instance.log("Error, ${jsonObject["coin"]} does not exist",
level: LogLevel.Error);
return true;
}
});
return mapped.map((name, dyn) => MapEntry(
name, WalletInfo.fromJson(Map<String, dynamic>.from(dyn as Map))));
}
Map<String, WalletInfo> fetchWalletsData() {
final names = DB.instance.get<dynamic>(
boxName: DB.boxNameAllWalletsData, key: 'names') as Map? ??
{};
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Logging.instance.log("Fetched wallet names: $names", level: LogLevel.Info);
final mapped = Map<String, dynamic>.from(names);
mapped.removeWhere((name, dyn) {
final jsonObject = Map<String, dynamic>.from(dyn as Map);
try {
Coin.values.byName(jsonObject["coin"] as String);
return false;
} catch (e, s) {
Logging.instance.log("Error, ${jsonObject["coin"]} does not exist",
level: LogLevel.Error);
return true;
}
});
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return mapped.map((name, dyn) => MapEntry(
name, WalletInfo.fromJson(Map<String, dynamic>.from(dyn as Map))));
}
Future<void> addExistingStackWallet({
required String name,
required String walletId,
required Coin coin,
required bool shouldNotifyListeners,
}) async {
final _names = DB.instance
.get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
Map<String, dynamic> names;
if (_names == null) {
names = {};
} else {
names = Map<String, dynamic>.from(_names);
}
if (names.keys.contains(walletId)) {
throw Exception("Wallet with walletId \"$walletId\" already exists!");
}
if (names.values.where((element) => element['name'] == name).isNotEmpty) {
throw Exception("Wallet with name \"$name\" already exists!");
}
names[walletId] = {
"id": walletId,
"coin": coin.name,
"name": name,
};
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData, key: 'names', value: names);
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${walletId}_cryptoCurrency",
value: coin.name);
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${walletId}_mnemonicHasBeenVerified",
value: false);
await DB.instance.addWalletBox(walletId: walletId);
await refreshWallets(shouldNotifyListeners);
}
/// returns the new walletId if successful, otherwise null
Future<String?> addNewWallet({
required String name,
required Coin coin,
required bool shouldNotifyListeners,
}) async {
final _names = DB.instance
.get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
Map<String, dynamic> names;
if (_names == null) {
names = {};
} else {
names = Map<String, dynamic>.from(_names);
}
// Prevent overwriting or storing empty names
if (name.isEmpty ||
names.values.where((element) => element['name'] == name).isNotEmpty) {
return null;
}
final id = const Uuid().v1();
names[id] = {
"id": id,
"coin": coin.name,
"name": name,
};
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData, key: 'names', value: names);
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${id}_cryptoCurrency",
value: coin.name);
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${id}_mnemonicHasBeenVerified",
value: false);
await DB.instance.addWalletBox(walletId: id);
await refreshWallets(shouldNotifyListeners);
return id;
}
Future<List<String>> getFavoriteWalletIds() async {
return DB.instance
.values<String>(boxName: DB.boxNameFavoriteWallets)
.toList();
}
Future<void> saveFavoriteWalletIds(List<String> walletIds) async {
await DB.instance.deleteAll<String>(boxName: DB.boxNameFavoriteWallets);
await DB.instance
.addAll(boxName: DB.boxNameFavoriteWallets, values: walletIds);
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//todo: check if print needed
// debugPrint("saveFavoriteWalletIds list: $walletIds");
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}
Future<void> addFavorite(String walletId) async {
final list = await getFavoriteWalletIds();
if (!list.contains(walletId)) {
list.add(walletId);
}
await saveFavoriteWalletIds(list);
}
Future<void> removeFavorite(String walletId) async {
final list = await getFavoriteWalletIds();
list.remove(walletId);
await saveFavoriteWalletIds(list);
}
Future<void> moveFavorite({
required int fromIndex,
required int toIndex,
}) async {
final list = await getFavoriteWalletIds();
if (fromIndex < toIndex) {
toIndex -= 1;
}
final walletId = list.removeAt(fromIndex);
list.insert(toIndex, walletId);
await saveFavoriteWalletIds(list);
}
Future<bool> checkForDuplicate(String name) async {
final names = DB.instance
.get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map?;
if (names == null) return false;
return names.values.where((element) => element['name'] == name).isNotEmpty;
}
Future<String?> getWalletId(String walletName) async {
final names = DB.instance
.get<dynamic>(boxName: DB.boxNameAllWalletsData, key: 'names') as Map;
final shells =
names.values.where((element) => element['name'] == walletName);
if (shells.isEmpty) {
return null;
}
return shells.first["id"] as String;
}
Future<bool> isMnemonicVerified({required String walletId}) async {
final isVerified = DB.instance.get<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${walletId}_mnemonicHasBeenVerified") as bool?;
if (isVerified == null) {
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Logging.instance.log(
"isMnemonicVerified(walletId: $walletId) returned null which should never happen!",
level: LogLevel.Error,
);
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throw Exception(
"isMnemonicVerified(walletId: $walletId) returned null which should never happen!");
} else {
return isVerified;
}
}
Future<void> setMnemonicVerified({required String walletId}) async {
final isVerified = DB.instance.get<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${walletId}_mnemonicHasBeenVerified") as bool?;
if (isVerified == null) {
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Logging.instance.log(
"setMnemonicVerified(walletId: $walletId) tried running on non existent wallet!",
level: LogLevel.Error,
);
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throw Exception(
"setMnemonicVerified(walletId: $walletId) tried running on non existent wallet!");
} else if (isVerified) {
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Logging.instance.log(
"setMnemonicVerified(walletId: $walletId) tried running on already verified wallet!",
level: LogLevel.Error,
);
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throw Exception(
"setMnemonicVerified(walletId: $walletId) tried running on already verified wallet!");
} else {
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${walletId}_mnemonicHasBeenVerified",
value: true);
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Logging.instance.log(
"setMnemonicVerified(walletId: $walletId) successful",
level: LogLevel.Error,
);
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}
}
// pin + mnemonic as well as anything else in secureStore
Future<int> deleteWallet(String name, bool shouldNotifyListeners) async {
final names = DB.instance.get<dynamic>(
boxName: DB.boxNameAllWalletsData, key: 'names') as Map? ??
{};
final walletId = await getWalletId(name);
if (walletId == null) {
return 3;
}
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Logging.instance.log(
"deleteWallet called with name=$name and id=$walletId",
level: LogLevel.Warning,
);
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final shell = names.remove(walletId);
if (shell == null) {
return 0;
}
// TODO delete derivations!!!
await _secureStore.delete(key: "${walletId}_pin");
await _secureStore.delete(key: "${walletId}_mnemonic");
await DB.instance.delete<dynamic>(
boxName: DB.boxNameAllWalletsData, key: "${walletId}_cryptoCurrency");
await DB.instance.delete<dynamic>(
boxName: DB.boxNameAllWalletsData,
key: "${walletId}_mnemonicHasBeenVerified");
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if (coinFromPrettyName(shell['coin'] as String) == Coin.wownero) {
final wowService =
wownero.createWowneroWalletService(DB.instance.moneroWalletInfoBox);
await wowService.remove(walletId);
Logging.instance
.log("monero wallet: $walletId deleted", level: LogLevel.Info);
} else if (coinFromPrettyName(shell['coin'] as String) == Coin.monero) {
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final xmrService =
monero.createMoneroWalletService(DB.instance.moneroWalletInfoBox);
await xmrService.remove(walletId);
Logging.instance
.log("monero wallet: $walletId deleted", level: LogLevel.Info);
} else if (coinFromPrettyName(shell['coin'] as String) == Coin.epicCash) {
final deleteResult =
await deleteEpicWallet(walletId: walletId, secureStore: _secureStore);
Logging.instance.log(
"epic wallet: $walletId deleted with result: $deleteResult",
level: LogLevel.Info);
}
// delete wallet data in main db
await MainDB.instance.deleteWalletBlockchainData(walletId);
await MainDB.instance.deleteAddressLabels(walletId);
await MainDB.instance.deleteTransactionNotes(walletId);
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// box data may currently still be read/written to if wallet was refreshing
// when delete was requested so instead of deleting now we mark the wallet
// as needs delete by adding it's id to a list which gets checked on app start
await DB.instance.add<String>(
boxName: DB.boxNameWalletsToDeleteOnStart, value: walletId);
final lookupService = TradeSentFromStackService();
for (final lookup in lookupService.all) {
if (lookup.walletIds.contains(walletId)) {
// update lookup data to reflect deleted wallet
await lookupService.save(
tradeWalletLookup: lookup.copyWith(
walletIds: lookup.walletIds.where((id) => id != walletId).toList(),
),
);
}
}
// delete notifications tied to deleted wallet
for (final notification in NotificationsService.instance.notifications) {
if (notification.walletId == walletId) {
await NotificationsService.instance.delete(notification, false);
}
}
if (names.isEmpty) {
await DB.instance.deleteAll<dynamic>(boxName: DB.boxNameAllWalletsData);
_walletNames = Future(() => {});
notifyListeners();
return 2; // error code no wallets on device
}
await DB.instance.put<dynamic>(
boxName: DB.boxNameAllWalletsData, key: 'names', value: names);
await refreshWallets(shouldNotifyListeners);
return 0;
}
Future<void> refreshWallets(bool shouldNotifyListeners) async {
final newNames = await _fetchWalletNames();
_walletNames = Future(() => newNames);
if (shouldNotifyListeners) notifyListeners();
}
}