| 1 | import 'dart:async'; |
| 2 | import 'dart:convert'; |
| 3 | import 'dart:typed_data'; |
| 4 | |
| 5 | import 'package:bip32/bip32.dart' as bip32; |
| 6 | import 'package:bip39/bip39.dart' as bip39; |
| 7 | import 'package:cw_core/amount/money.dart'; |
| 8 | import 'package:cw_core/crypto_currency.dart'; |
| 9 | import 'package:cw_core/encryption_file_utils.dart'; |
| 10 | import 'package:cw_core/erc20_token.dart'; |
| 11 | import 'package:cw_core/node.dart'; |
| 12 | import 'package:cw_core/pathForWallet.dart'; |
| 13 | import 'package:cw_core/pending_transaction.dart'; |
| 14 | import 'package:cw_core/sync_status.dart'; |
| 15 | import 'package:cw_core/transaction_direction.dart'; |
| 16 | import 'package:cw_core/transaction_priority.dart'; |
| 17 | import 'package:cw_core/utils/homoglyph_normalizer.dart'; |
| 18 | import 'package:cw_core/utils/print_verbose.dart'; |
| 19 | import 'package:cw_core/wallet_addresses.dart'; |
| 20 | import 'package:cw_core/wallet_base.dart'; |
| 21 | import 'package:cw_core/wallet_info.dart'; |
| 22 | import 'package:cw_core/wallet_keys_file.dart'; |
| 23 | import 'package:cw_core/wallet_type.dart'; |
| 24 | import 'package:cw_evm/clients/evm_chain_client.dart'; |
| 25 | import 'package:cw_evm/evm_chain_client_factory.dart'; |
| 26 | import 'package:cw_evm/evm_chain_default_tokens.dart'; |
| 27 | import 'package:cw_evm/evm_chain_exceptions.dart'; |
| 28 | import 'package:cw_evm/evm_chain_registry.dart'; |
| 29 | import 'package:cw_evm/evm_chain_transaction_credentials.dart'; |
| 30 | import 'package:cw_evm/evm_chain_transaction_history.dart'; |
| 31 | import 'package:cw_evm/evm_chain_transaction_model.dart'; |
| 32 | import 'package:cw_evm/evm_chain_transaction_priority.dart'; |
| 33 | import 'package:cw_evm/utils/evm_chain_utils.dart'; |
| 34 | import 'package:cw_evm/utils/network_chain_utils.dart'; |
| 35 | import 'package:cw_evm/evm_chain_wallet_addresses.dart'; |
| 36 | import 'package:cw_evm/hardware/evm_chain_bitbox_credentials.dart'; |
| 37 | import 'package:cw_evm/hardware/evm_chain_ledger_credentials.dart'; |
| 38 | import 'package:cw_evm/hardware/evm_chain_trezor_credentials.dart'; |
| 39 | import 'package:hex/hex.dart'; |
| 40 | import 'package:mobx/mobx.dart'; |
| 41 | import 'package:shared_preferences/shared_preferences.dart'; |
| 42 | import 'package:web3dart/crypto.dart'; |
| 43 | import 'package:web3dart/web3dart.dart'; |
| 44 | import 'package:eth_sig_util/eth_sig_util.dart'; |
| 45 | |
| 46 | import 'contract/erc20.dart'; |
| 47 | import 'evm_chain_transaction_info.dart'; |
| 48 | import 'evm_erc20_balance.dart'; |
| 49 | |
| 50 | part 'evm_chain_wallet.g.dart'; |
| 51 | |
| 52 | const Map<String, String> methodSignatureToType = { |
| 53 | // ERC20 |
| 54 | '0x095ea7b3': 'approval', |
| 55 | '0xa9059cbb': 'transfer', |
| 56 | '0x23b872dd': 'transferFrom', |
| 57 | |
| 58 | // Aggregator / Router (Swaps.xyz paths) |
| 59 | '0x9be111d1': 'smartSwap', |
| 60 | '0x5327a3d2': 'crossChainSwap', |
| 61 | '0x205030b2': 'routerExecution', |
| 62 | '0x5ad29efa': 'relayedExecution', |
| 63 | |
| 64 | // Misc contracts |
| 65 | '0x574da717': 'transferOut', |
| 66 | '0x2e1a7d4d': 'withdraw', |
| 67 | '0x7ff36ab5': 'swapExactETHForTokens', |
| 68 | '0x40c10f19': 'mint', |
| 69 | '0x44bc937b': 'depositWithExpiry', |
| 70 | '0xd0e30db0': 'deposit', |
| 71 | '0xe8e33700': 'addLiquidity', |
| 72 | '0xd505accf': 'permit', |
| 73 | }; |
| 74 | |
| 75 | class EVMChainWallet = EVMChainWalletBase with _$EVMChainWallet; |
| 76 | |
| 77 | abstract class EVMChainWalletBase |
| 78 | extends WalletBase<EVMChainERC20Balance, EVMChainTransactionHistory, EVMChainTransactionInfo> |
| 79 | with Store, WalletKeysFile { |
| 80 | EVMChainWalletBase({ |
| 81 | required WalletInfo walletInfo, |
| 82 | required DerivationInfo derivationInfo, |
| 83 | required EVMChainClient client, |
| 84 | required CryptoCurrency nativeCurrency, |
| 85 | String? mnemonic, |
| 86 | String? privateKey, |
| 87 | required String password, |
| 88 | EVMChainERC20Balance? initialBalance, |
| 89 | required this.encryptionFileUtils, |
| 90 | this.passphrase, |
| 91 | int? initialChainId, |
| 92 | }) : syncStatus = const NotConnectedSyncStatus(), |
| 93 | _password = password, |
| 94 | _mnemonic = mnemonic, |
| 95 | _hexPrivateKey = privateKey, |
| 96 | _isTransactionUpdating = false, |
| 97 | _client = client, |
| 98 | selectedChainId = initialChainId ?? _getInitialChainId(walletInfo.type), |
| 99 | walletAddresses = EVMChainWalletAddresses( |
| 100 | walletInfo, initialChainId ?? _getInitialChainId(walletInfo.type)), |
| 101 | balance = ObservableMap<CryptoCurrency, EVMChainERC20Balance>.of( |
| 102 | { |
| 103 | nativeCurrency: initialBalance ?? EVMChainERC20Balance(Money.zero(nativeCurrency)), |
| 104 | }, |
| 105 | ), |
| 106 | super(walletInfo, derivationInfo) { |
| 107 | this.walletInfo = walletInfo; |
| 108 | transactionHistory = setUpTransactionHistory(walletInfo, password, encryptionFileUtils); |
| 109 | |
| 110 | sharedPrefs.complete(SharedPreferences.getInstance()); |
| 111 | } |
| 112 | |
| 113 | final String? _mnemonic; |
| 114 | final String? _hexPrivateKey; |
| 115 | final String _password; |
| 116 | final EncryptionFileUtils encryptionFileUtils; |
| 117 | |
| 118 | List<Erc20Token> _erc20Tokens = []; |
| 119 | |
| 120 | late final Credentials _evmChainPrivateKey; |
| 121 | |
| 122 | Credentials get evmChainPrivateKey => _evmChainPrivateKey; |
| 123 | |
| 124 | late EVMChainClient _client; |
| 125 | |
| 126 | @override |
| 127 | int? get chainId => selectedChainId; |
| 128 | |
| 129 | /// Currently selected chain ID for this wallet |
| 130 | @observable |
| 131 | int selectedChainId; |
| 132 | |
| 133 | /// Get chain configuration for currently selected chain |
| 134 | @computed |
| 135 | ChainConfig? get selectedChainConfig { |
| 136 | final registry = EvmChainRegistry(); |
| 137 | return registry.getChainConfig(selectedChainId); |
| 138 | } |
| 139 | |
| 140 | @override |
| 141 | @computed |
| 142 | CryptoCurrency get currency { |
| 143 | final config = selectedChainConfig; |
| 144 | if (config != null) { |
| 145 | return config.nativeCurrency; |
| 146 | } |
| 147 | |
| 148 | return super.currency; |
| 149 | } |
| 150 | |
| 151 | bool get hasPriorityFee => EVMChainUtils.hasPriorityFee(selectedChainId); |
| 152 | |
| 153 | /// Get initial chain ID from registry based on wallet type |
| 154 | static int _getInitialChainId(WalletType walletType) { |
| 155 | final registry = EvmChainRegistry(); |
| 156 | final chainConfig = registry.getChainConfigByWalletType(walletType); |
| 157 | return chainConfig?.chainId ?? 1; // Default to Ethereum if not found |
| 158 | } |
| 159 | |
| 160 | @observable |
| 161 | String? nativeTxEstimatedFee; |
| 162 | |
| 163 | @observable |
| 164 | String? erc20TxEstimatedFee; |
| 165 | |
| 166 | bool _isTransactionUpdating; |
| 167 | |
| 168 | Timer? _transactionsUpdateTimer; |
| 169 | |
| 170 | @override |
| 171 | WalletAddresses walletAddresses; |
| 172 | |
| 173 | @override |
| 174 | @observable |
| 175 | SyncStatus syncStatus; |
| 176 | |
| 177 | @override |
| 178 | @observable |
| 179 | late ObservableMap<CryptoCurrency, EVMChainERC20Balance> balance; |
| 180 | |
| 181 | Completer<SharedPreferences> sharedPrefs = Completer(); |
| 182 | |
| 183 | //! Chain selection methods |
| 184 | |
| 185 | /// Select a different EVM network chain for this wallet |
| 186 | /// |
| 187 | /// This allows switching between EVM networks (Ethereum, Polygon, Base, Arbitrum, etc.) |
| 188 | /// without creating a new wallet. The selected chain ID is stored, the client is |
| 189 | /// immediately updated, and the wallet automatically connects to the node, updates |
| 190 | /// balance, and refreshes transactions for the selected network. |
| 191 | /// |
| 192 | /// Transactions are stored in separate files per network (based on chainId), so switching |
| 193 | /// networks automatically loads transactions from the correct file. |
| 194 | @action |
| 195 | Future<void> selectChain(int chainId, {required Node node}) async { |
| 196 | if (EvmChainRegistry().getChainConfig(chainId) == null) { |
| 197 | throw Exception('Chain config not found for chainId: $chainId'); |
| 198 | } |
| 199 | |
| 200 | if (selectedChainId == chainId) return; |
| 201 | |
| 202 | _client.stop(); |
| 203 | |
| 204 | balance.clear(); |
| 205 | |
| 206 | selectedChainId = chainId; |
| 207 | _client = EVMChainClientFactory.createClient(selectedChainId); |
| 208 | |
| 209 | // Automatically connect to node for the selected chain |
| 210 | await connectToNode(node: node); |
| 211 | |
| 212 | // Reload ERC20 tokens for the new chain |
| 213 | await initErc20Tokens(); |
| 214 | |
| 215 | // Reload transaction history from the new chain's file |
| 216 | await transactionHistory.init(); |
| 217 | |
| 218 | await save(); |
| 219 | |
| 220 | await startSync(); |
| 221 | } |
| 222 | |
| 223 | Future<void> addInitialTokens() async { |
| 224 | final initialErc20Tokens = EVMChainDefaultTokens.getDefaultTokensByChainId(selectedChainId); |
| 225 | |
| 226 | for (final token in initialErc20Tokens) { |
| 227 | final existingToken = _findCachedToken(token.contractAddress); |
| 228 | |
| 229 | final newToken = Erc20Token.copyWith( |
| 230 | token, |
| 231 | enabled: existingToken?.enabled ?? token.enabled, |
| 232 | walletName: walletInfo.name, |
| 233 | chainId: selectedChainId, |
| 234 | ); |
| 235 | |
| 236 | await newToken.save(); |
| 237 | _upsertCachedToken(newToken); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | List<String> get getDefaultTokenContractAddresses => |
| 242 | EVMChainDefaultTokens.getDefaultTokenAddresses(selectedChainId); |
| 243 | |
| 244 | Future<void> initErc20Tokens() async { |
| 245 | _erc20Tokens = await Erc20Token.getAllForWallet(walletInfo.name, selectedChainId); |
| 246 | |
| 247 | await addInitialTokens(); |
| 248 | } |
| 249 | |
| 250 | Erc20Token? _findCachedToken(String contractAddress) { |
| 251 | final lowerAddress = contractAddress.toLowerCase(); |
| 252 | |
| 253 | for (final token in _erc20Tokens) { |
| 254 | if (token.contractAddress.toLowerCase() == lowerAddress) return token; |
| 255 | } |
| 256 | return null; |
| 257 | } |
| 258 | |
| 259 | void _upsertCachedToken(Erc20Token token) { |
| 260 | final lowerAddress = token.contractAddress.toLowerCase(); |
| 261 | |
| 262 | _erc20Tokens.removeWhere((t) => t.contractAddress.toLowerCase() == lowerAddress); |
| 263 | _erc20Tokens.add(token); |
| 264 | } |
| 265 | |
| 266 | String getTransactionHistoryFileName() => |
| 267 | EVMChainUtils.getTransactionHistoryFileName(selectedChainId); |
| 268 | |
| 269 | Future<bool> checkIfScanProviderIsEnabled() async { |
| 270 | final key = EVMChainUtils.getScanProviderPreferenceKey(selectedChainId); |
| 271 | return (await sharedPrefs.future).getBool(key) ?? true; |
| 272 | } |
| 273 | |
| 274 | EVMChainTransactionInfo getTransactionInfo( |
| 275 | EVMChainTransactionModel transactionModel, |
| 276 | String address, |
| 277 | ) { |
| 278 | final decimals = transactionModel.tokenDecimal ?? 18; |
| 279 | final tokenSymbol = transactionModel.tokenSymbol ?? |
| 280 | EVMChainUtils.getDefaultTokenSymbol(transactionModel.chainId); |
| 281 | |
| 282 | final amountCurrency = Erc20Token( |
| 283 | name: '', |
| 284 | contractAddress: transactionModel.contractAddress, |
| 285 | decimal: decimals, |
| 286 | symbol: tokenSymbol, |
| 287 | ); |
| 288 | return EVMChainTransactionInfo( |
| 289 | id: transactionModel.hash, |
| 290 | height: transactionModel.blockNumber, |
| 291 | amount: Money(transactionModel.amount, amountCurrency), |
| 292 | direction: transactionModel.from == address |
| 293 | ? TransactionDirection.outgoing |
| 294 | : TransactionDirection.incoming, |
| 295 | isPending: false, |
| 296 | date: transactionModel.date, |
| 297 | confirmations: transactionModel.confirmations, |
| 298 | fee: Money(BigInt.from(transactionModel.gasUsed) * transactionModel.gasPrice, currency), |
| 299 | exponent: transactionModel.tokenDecimal ?? 18, |
| 300 | tokenSymbol: tokenSymbol, |
| 301 | to: transactionModel.to, |
| 302 | from: transactionModel.from, |
| 303 | evmSignatureName: transactionModel.evmSignatureName, |
| 304 | contractAddress: transactionModel.contractAddress, |
| 305 | chainId: transactionModel.chainId, |
| 306 | ); |
| 307 | } |
| 308 | |
| 309 | Erc20Token createNewErc20TokenObject(Erc20Token token, String? iconPath) { |
| 310 | return Erc20Token( |
| 311 | name: token.name, |
| 312 | symbol: token.symbol, |
| 313 | contractAddress: token.contractAddress, |
| 314 | decimal: token.decimal, |
| 315 | enabled: token.enabled, |
| 316 | tag: token.tag ?? EVMChainUtils.getDefaultTokenTag(selectedChainId), |
| 317 | iconPath: iconPath, |
| 318 | isPotentialScam: token.isPotentialScam, |
| 319 | walletName: walletInfo.name, |
| 320 | chainId: selectedChainId, |
| 321 | ); |
| 322 | } |
| 323 | |
| 324 | EVMChainTransactionHistory setUpTransactionHistory( |
| 325 | WalletInfo walletInfo, |
| 326 | String password, |
| 327 | EncryptionFileUtils encryptionFileUtils, |
| 328 | ) { |
| 329 | return EVMChainTransactionHistory( |
| 330 | walletInfo: walletInfo, |
| 331 | password: password, |
| 332 | encryptionFileUtils: encryptionFileUtils, |
| 333 | getCurrentChainId: () => selectedChainId, |
| 334 | ); |
| 335 | } |
| 336 | |
| 337 | String _getUSDCContractAddress() { |
| 338 | return switch (selectedChainId) { |
| 339 | 1 => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", |
| 340 | 137 => "0x2791bca1f2de4661ed88a30c99a7a9449aa84174", |
| 341 | 8453 => "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913", |
| 342 | 42161 => "0xaf88d065e77c8cC2239327C5EDb3A432268e5831", |
| 343 | 56 => "0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d", |
| 344 | _ => throw Exception("Unsupported chain ID: $selectedChainId"), |
| 345 | }; |
| 346 | } |
| 347 | |
| 348 | @override |
| 349 | Future<bool> checkNodeHealth() async { |
| 350 | try { |
| 351 | await _client.getBalance(_evmChainPrivateKey.address); |
| 352 | |
| 353 | final usdcContractAddress = Erc20Token( |
| 354 | name: "USDC", symbol: "USDC", contractAddress: _getUSDCContractAddress(), decimal: 6); |
| 355 | |
| 356 | await _client.fetchERC20Balances(_evmChainPrivateKey.address, usdcContractAddress); |
| 357 | |
| 358 | return true; |
| 359 | } catch (e) { |
| 360 | return false; |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | //! Common Methods across child classes |
| 365 | |
| 366 | String idFor(String name, WalletType type) => '${walletTypeToString(type).toLowerCase()}_$name'; |
| 367 | |
| 368 | Future<void> init() async { |
| 369 | await initErc20Tokens(); |
| 370 | |
| 371 | await walletAddresses.init(); |
| 372 | await transactionHistory.init(); |
| 373 | |
| 374 | // check for Already existing scam tokens, cuz users can get scammed twice ¯\_(ツ)_/¯ |
| 375 | await _checkForExistingScamTokens(); |
| 376 | |
| 377 | switch (walletInfo.hardwareWalletType) { |
| 378 | case HardwareWalletType.ledger: |
| 379 | _evmChainPrivateKey = EvmLedgerCredentials(walletInfo.address); |
| 380 | walletAddresses.address = walletInfo.address; |
| 381 | break; |
| 382 | case HardwareWalletType.bitbox: |
| 383 | _evmChainPrivateKey = EvmBitboxCredentials(walletInfo.address); |
| 384 | walletAddresses.address = walletInfo.address; |
| 385 | break; |
| 386 | case HardwareWalletType.trezor: |
| 387 | _evmChainPrivateKey = EvmTrezorCredentials(walletInfo.address); |
| 388 | walletAddresses.address = walletInfo.address; |
| 389 | break; |
| 390 | case HardwareWalletType.cupcake: |
| 391 | case HardwareWalletType.coldcard: |
| 392 | case HardwareWalletType.seedsigner: |
| 393 | case HardwareWalletType.keystone: |
| 394 | throw UnimplementedError(); |
| 395 | case null: |
| 396 | _evmChainPrivateKey = await getPrivateKey( |
| 397 | mnemonic: _mnemonic, |
| 398 | privateKey: _hexPrivateKey, |
| 399 | password: _password, |
| 400 | passphrase: passphrase, |
| 401 | ); |
| 402 | walletAddresses.address = _evmChainPrivateKey.address.hexEip55; |
| 403 | break; |
| 404 | } |
| 405 | |
| 406 | // Ensure balance is initialized for current currency (in case currency changed) |
| 407 | if (!balance.containsKey(currency)) { |
| 408 | balance[currency] = EVMChainERC20Balance(Money.zero(currency)); |
| 409 | } |
| 410 | |
| 411 | await save(); |
| 412 | } |
| 413 | |
| 414 | static const _urlLikeSuspiciousMarkers = [ |
| 415 | 't.me', |
| 416 | '.me', |
| 417 | 'telegram', |
| 418 | 'http', |
| 419 | 'https', |
| 420 | '.com', |
| 421 | '.org', |
| 422 | '.top', |
| 423 | '.live', |
| 424 | '.xyz', |
| 425 | 'www', |
| 426 | '🎁', |
| 427 | 'airdrop', |
| 428 | 'distribution', |
| 429 | ]; |
| 430 | |
| 431 | static final _suspiciousWordPattern = RegExp(r'\b(bot|claim|reward)\b', caseSensitive: false); |
| 432 | |
| 433 | static const _knownNonEvmNativeSymbols = { |
| 434 | 'ICP', |
| 435 | 'SOL', |
| 436 | 'TRX', |
| 437 | 'ATOM', |
| 438 | 'DOT', |
| 439 | 'ADA', |
| 440 | 'XRP', |
| 441 | 'XLM', |
| 442 | 'XMR', |
| 443 | 'ALGO', |
| 444 | 'NEAR', |
| 445 | 'TON', |
| 446 | 'HBAR', |
| 447 | 'APT', |
| 448 | 'SUI', |
| 449 | 'KAS', |
| 450 | }; |
| 451 | |
| 452 | static bool _hasSuspiciousData(String normalized) { |
| 453 | final lower = normalized.toLowerCase(); |
| 454 | if (_urlLikeSuspiciousMarkers.any(lower.contains)) return true; |
| 455 | return _suspiciousWordPattern.hasMatch(lower); |
| 456 | } |
| 457 | |
| 458 | bool isTokenPropertiesSuspicious( |
| 459 | Erc20Token token, { |
| 460 | Set<String>? cachedWhitelistLower, |
| 461 | Set<String>? cachedDefaultSymbolsUpper, |
| 462 | }) { |
| 463 | final whitelistLower = cachedWhitelistLower ?? |
| 464 | getDefaultTokenContractAddresses.map((a) => a.toLowerCase()).toSet(); |
| 465 | final defaultSymbolsUpper = cachedDefaultSymbolsUpper ?? |
| 466 | EVMChainDefaultTokens.getDefaultTokenSymbols(selectedChainId).toSet(); |
| 467 | |
| 468 | final isTokenWhitelisted = whitelistLower.contains(token.contractAddress.toLowerCase()); |
| 469 | |
| 470 | final normalizedName = normalizeHomoglyphs(token.name.trim().toUpperCase()); |
| 471 | final normalizedSymbol = normalizeHomoglyphs(token.symbol.trim().toUpperCase()); |
| 472 | final normalizedTitle = normalizeHomoglyphs(token.title.trim().toUpperCase()); |
| 473 | |
| 474 | final hasSuspiciousData = _hasSuspiciousData(normalizedName) || |
| 475 | _hasSuspiciousData(normalizedSymbol) || |
| 476 | _hasSuspiciousData(normalizedTitle); |
| 477 | |
| 478 | final nativeSymbol = currency.title.toUpperCase(); |
| 479 | final hasSuspiciousNativeSymbol = normalizedSymbol == nativeSymbol && !isTokenWhitelisted; |
| 480 | |
| 481 | final hasSuspiciousDefaultTokenSymbol = |
| 482 | defaultSymbolsUpper.contains(normalizedSymbol) && !isTokenWhitelisted; |
| 483 | |
| 484 | final hasSuspiciousNonEvmNativeSymbol = |
| 485 | _knownNonEvmNativeSymbols.contains(normalizedSymbol) && !isTokenWhitelisted; |
| 486 | |
| 487 | return hasSuspiciousData || |
| 488 | hasSuspiciousNativeSymbol || |
| 489 | hasSuspiciousDefaultTokenSymbol || |
| 490 | hasSuspiciousNonEvmNativeSymbol; |
| 491 | } |
| 492 | |
| 493 | String get _scamCheckDoneKey => 'evm_scam_check_v2_done_${walletInfo.name}'; |
| 494 | |
| 495 | Future<void> _checkForExistingScamTokens() async { |
| 496 | final prefs = await sharedPrefs.future; |
| 497 | if (prefs.getBool(_scamCheckDoneKey) == true) return; |
| 498 | |
| 499 | final whitelistLower = getDefaultTokenContractAddresses.map((a) => a.toLowerCase()).toSet(); |
| 500 | final defaultSymbolsUpper = |
| 501 | EVMChainDefaultTokens.getDefaultTokenSymbols(selectedChainId).toSet(); |
| 502 | |
| 503 | for (var token in erc20Currencies) { |
| 504 | final suspicious = isTokenPropertiesSuspicious( |
| 505 | token, |
| 506 | cachedWhitelistLower: whitelistLower, |
| 507 | cachedDefaultSymbolsUpper: defaultSymbolsUpper, |
| 508 | ); |
| 509 | |
| 510 | if (suspicious && !token.isPotentialScam) { |
| 511 | token.isPotentialScam = true; |
| 512 | token.iconPath = null; |
| 513 | await token.save(); |
| 514 | continue; |
| 515 | } |
| 516 | |
| 517 | if (!suspicious && token.isPotentialScam) { |
| 518 | token.isPotentialScam = false; |
| 519 | |
| 520 | if (token.iconPath == null || token.iconPath!.isEmpty) { |
| 521 | try { |
| 522 | token.iconPath = CryptoCurrency.all |
| 523 | .firstWhere((e) => e.title.toUpperCase() == token.symbol.toUpperCase()) |
| 524 | .iconPath; |
| 525 | } catch (_) { |
| 526 | printV("Token ${token.symbol} does not have an icon path"); |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | await token.save(); |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | await prefs.setBool(_scamCheckDoneKey, true); |
| 535 | } |
| 536 | |
| 537 | Future<MoralisDiscoveryResult> discoverTokensFromMoralis() async { |
| 538 | try { |
| 539 | final address = walletAddresses.address; |
| 540 | if (address.isEmpty) return MoralisDiscoveryResult.empty; |
| 541 | |
| 542 | final chainName = EVMChainUtils.getDefaultTokenSymbol(selectedChainId).toLowerCase(); |
| 543 | |
| 544 | final walletTokens = await _client.fetchWalletTokensFromMoralis(address, chainName); |
| 545 | if (walletTokens.isEmpty) return MoralisDiscoveryResult.empty; |
| 546 | |
| 547 | final existingTokenAddresses = { |
| 548 | for (final token in _erc20Tokens) token.contractAddress.toLowerCase(): token, |
| 549 | }; |
| 550 | |
| 551 | final whitelistedTokenAddresses = |
| 552 | getDefaultTokenContractAddresses.map((a) => a.toLowerCase()).toSet(); |
| 553 | |
| 554 | final newTokens = <DiscoveredToken>[]; |
| 555 | |
| 556 | for (final token in walletTokens) { |
| 557 | final addr = token.contractAddress.toLowerCase(); |
| 558 | |
| 559 | final existingToken = existingTokenAddresses[addr]; |
| 560 | if (existingToken != null) { |
| 561 | if (whitelistedTokenAddresses.contains(addr) && !existingToken.enabled) { |
| 562 | existingToken.enabled = true; |
| 563 | await existingToken.save(); |
| 564 | await addErc20Token(existingToken); |
| 565 | } |
| 566 | continue; |
| 567 | } |
| 568 | |
| 569 | final newToken = Erc20Token( |
| 570 | name: token.name, |
| 571 | symbol: token.symbol, |
| 572 | contractAddress: addr, |
| 573 | decimal: token.decimals, |
| 574 | iconPath: token.iconUrl, |
| 575 | tag: EVMChainUtils.getDefaultTokenTag(selectedChainId), |
| 576 | isPotentialScam: token.possibleSpam, |
| 577 | ); |
| 578 | |
| 579 | newTokens.add( |
| 580 | DiscoveredToken( |
| 581 | token: newToken, |
| 582 | balanceWei: token.balanceWei, |
| 583 | verifiedContract: token.verifiedContract, |
| 584 | moralisUsdPrice: token.usdPrice, |
| 585 | moralisUsdValue: token.usdValue, |
| 586 | ), |
| 587 | ); |
| 588 | } |
| 589 | |
| 590 | return MoralisDiscoveryResult(newTokens: newTokens); |
| 591 | } catch (e) { |
| 592 | printV('Error discovering tokens from Moralis: ${e.toString()}'); |
| 593 | return MoralisDiscoveryResult.empty; |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | @override |
| 598 | int calculateEstimatedFee(TransactionPriority priority, int? amount) => 0; |
| 599 | |
| 600 | @override |
| 601 | Future<void> updateEstimatedFeesParams(TransactionPriority? priority) async => |
| 602 | await _getEstimatedFees(priority); |
| 603 | |
| 604 | Future<void> _getEstimatedFees(TransactionPriority? priority) async { |
| 605 | final nativeFee = await _getNativeTxFee(priority); |
| 606 | nativeTxEstimatedFee = nativeFee.toString(); |
| 607 | |
| 608 | final erc20Fee = await _getErc20TxFee(priority); |
| 609 | erc20TxEstimatedFee = erc20Fee.toString(); |
| 610 | } |
| 611 | |
| 612 | Future<int> _getNativeTxFee(TransactionPriority? priority) async { |
| 613 | try { |
| 614 | int priorityFee = 0; |
| 615 | if (hasPriorityFee) { |
| 616 | if (priority is EVMChainTransactionPriority) { |
| 617 | priorityFee = getTotalPriorityFee(priority); |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | final gasPrice = await _client.getGasUnitPrice(); |
| 622 | final gasBaseFee = await _client.getGasBaseFee(); |
| 623 | |
| 624 | final gasUnits = await _client.getEstimatedGasUnitsForTransaction( |
| 625 | senderAddress: evmChainPrivateKey.address, |
| 626 | toAddress: evmChainPrivateKey.address, |
| 627 | gasPrice: EtherAmount.fromInt(EtherUnit.wei, gasPrice), |
| 628 | value: EtherAmount.fromBigInt(EtherUnit.wei, BigInt.from(0.0000000001)), |
| 629 | ); |
| 630 | |
| 631 | int maxFeePerGas = gasBaseFee != null ? (gasBaseFee + priorityFee) : (gasPrice + priorityFee); |
| 632 | final totalGasFee = gasUnits * maxFeePerGas; |
| 633 | return totalGasFee; |
| 634 | } catch (e) { |
| 635 | printV(e.toString()); |
| 636 | return 0; |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | Future<int> _getErc20TxFee(TransactionPriority? priority) async { |
| 641 | try { |
| 642 | int priorityFee = 0; |
| 643 | if (hasPriorityFee) { |
| 644 | if (priority is EVMChainTransactionPriority) { |
| 645 | priorityFee = getTotalPriorityFee(priority); |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | final gasPrice = await _client.getGasUnitPrice(); |
| 650 | final gasBaseFee = await _client.getGasBaseFee(); |
| 651 | |
| 652 | final gasUnits = await _client.getEstimatedGasUnitsForTransaction( |
| 653 | senderAddress: evmChainPrivateKey.address, |
| 654 | toAddress: evmChainPrivateKey.address, |
| 655 | contractAddress: _getUSDCContractAddress(), // Using USDC for default estimation |
| 656 | gasPrice: EtherAmount.fromInt(EtherUnit.wei, gasPrice), |
| 657 | value: EtherAmount.fromBigInt(EtherUnit.wei, BigInt.from(0.0000000001)), |
| 658 | ); |
| 659 | |
| 660 | int maxFeePerGas = gasBaseFee != null ? (gasBaseFee + priorityFee) : (gasPrice + priorityFee); |
| 661 | final totalGasFee = gasUnits * maxFeePerGas; |
| 662 | return totalGasFee; |
| 663 | } catch (e) { |
| 664 | printV(e.toString()); |
| 665 | return 0; |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | int getTotalPriorityFee(EVMChainTransactionPriority priority) => |
| 670 | EVMChainUtils.getTotalPriorityFee(priority, selectedChainId); |
| 671 | |
| 672 | /// Allows more customization to the fetch estimatedFees flow. |
| 673 | /// |
| 674 | /// We are able to pass in: |
| 675 | /// - The exact amount the user wants to send, |
| 676 | /// - The addressHex for the receiving wallet, |
| 677 | /// - A contract address which would be essential in determining if to calculate the estimate for ERC20 or native ETH |
| 678 | Future<GasParamsHandler> calculateActualEstimatedFeeForCreateTransaction({ |
| 679 | required Money amount, |
| 680 | required String? contractAddress, |
| 681 | required String receivingAddressHex, |
| 682 | required TransactionPriority? priority, |
| 683 | Uint8List? data, |
| 684 | }) async { |
| 685 | try { |
| 686 | int priorityFee = 0; |
| 687 | if (hasPriorityFee && priority != null) { |
| 688 | if (priority is EVMChainTransactionPriority) { |
| 689 | priorityFee = getTotalPriorityFee(priority); |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | final gasBaseFee = await _client.getGasBaseFee(); |
| 694 | final gasPrice = await _client.getGasUnitPrice(); |
| 695 | |
| 696 | if (gasPrice <= 0) { |
| 697 | printV('Invalid gas price received: $gasPrice'); |
| 698 | throw EVMChainTransactionFeesException('Failed to retrieve gas price from node'); |
| 699 | } |
| 700 | |
| 701 | final maxFeePerGas = EVMChainUtils.computeBufferedMaxFeePerGasWei( |
| 702 | gasBaseFee: gasBaseFee, |
| 703 | gasPrice: gasPrice, |
| 704 | priorityFeeWei: priorityFee, |
| 705 | chainHasPriorityFee: hasPriorityFee, |
| 706 | ); |
| 707 | final adjustedGasPrice = maxFeePerGas; |
| 708 | |
| 709 | final estimatedGas = await _client.getEstimatedGasUnitsForTransaction( |
| 710 | contractAddress: contractAddress, |
| 711 | senderAddress: _evmChainPrivateKey.address, |
| 712 | value: EtherAmount.fromBigInt(EtherUnit.wei, amount.amount), |
| 713 | gasPrice: EtherAmount.fromInt(EtherUnit.wei, adjustedGasPrice), |
| 714 | toAddress: EthereumAddress.fromHex(receivingAddressHex), |
| 715 | maxFeePerGas: EtherAmount.fromInt(EtherUnit.wei, maxFeePerGas), |
| 716 | data: data, |
| 717 | ); |
| 718 | |
| 719 | final totalGasFee = estimatedGas * adjustedGasPrice; |
| 720 | |
| 721 | return GasParamsHandler( |
| 722 | estimatedGasUnits: estimatedGas, |
| 723 | estimatedGasFee: totalGasFee, |
| 724 | maxFeePerGas: maxFeePerGas, |
| 725 | gasPrice: adjustedGasPrice, |
| 726 | ); |
| 727 | } catch (e) { |
| 728 | printV('Error calculating estimated fee: ${e.toString()}'); |
| 729 | if (e is EVMChainTransactionFeesException) { |
| 730 | rethrow; |
| 731 | } |
| 732 | throw EVMChainTransactionFeesException( |
| 733 | 'Failed to calculate transaction fees: ${e.toString()}'); |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | Future<WalletConnectBufferedFeeData?> getWCBufferedFeeQuote(TransactionPriority priority) async { |
| 738 | try { |
| 739 | final gasBaseFee = await _client.getGasBaseFee(); |
| 740 | final gasPrice = await _client.getGasUnitPrice(); |
| 741 | |
| 742 | if (gasPrice <= 0) { |
| 743 | printV('WC fee quote: invalid gas price $gasPrice'); |
| 744 | return null; |
| 745 | } |
| 746 | |
| 747 | int priorityFee = 0; |
| 748 | if (hasPriorityFee && priority is EVMChainTransactionPriority) { |
| 749 | priorityFee = getTotalPriorityFee(priority); |
| 750 | } |
| 751 | |
| 752 | final maxFee = EVMChainUtils.computeBufferedMaxFeePerGasWei( |
| 753 | gasBaseFee: gasBaseFee, |
| 754 | gasPrice: gasPrice, |
| 755 | priorityFeeWei: priorityFee, |
| 756 | chainHasPriorityFee: hasPriorityFee, |
| 757 | ); |
| 758 | |
| 759 | return WalletConnectBufferedFeeData( |
| 760 | maxFeePerGasWei: maxFee, |
| 761 | maxPriorityFeePerGasWei: priorityFee, |
| 762 | latestBaseFeeWei: gasBaseFee, |
| 763 | ); |
| 764 | } catch (e, s) { |
| 765 | printV('getWalletConnectBufferedFeeQuote: $e\n$s'); |
| 766 | return null; |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | @override |
| 771 | Future<void> changePassword(String password) { |
| 772 | throw UnimplementedError("changePassword"); |
| 773 | } |
| 774 | |
| 775 | @override |
| 776 | Future<void> close({bool shouldCleanup = false}) async { |
| 777 | _client.stop(); |
| 778 | _transactionsUpdateTimer?.cancel(); |
| 779 | } |
| 780 | |
| 781 | @action |
| 782 | @override |
| 783 | Future<void> connectToNode({required Node node}) async { |
| 784 | try { |
| 785 | syncStatus = ConnectingSyncStatus(); |
| 786 | |
| 787 | final isConnected = _client.connect(node); |
| 788 | |
| 789 | if (!isConnected) { |
| 790 | throw Exception("${walletInfo.type.name.toUpperCase()} Node connection failed"); |
| 791 | } |
| 792 | |
| 793 | _client.setListeners(_evmChainPrivateKey.address, _onNewTransaction); |
| 794 | |
| 795 | _setTransactionUpdateTimer(); |
| 796 | |
| 797 | syncStatus = ConnectedSyncStatus(); |
| 798 | } catch (e) { |
| 799 | syncStatus = FailedSyncStatus(); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | @action |
| 804 | @override |
| 805 | Future<void> startSync() async { |
| 806 | try { |
| 807 | syncStatus = AttemptingSyncStatus(); |
| 808 | |
| 809 | // Verify node health before attempting to sync |
| 810 | final isHealthy = await checkNodeHealth(); |
| 811 | if (!isHealthy) { |
| 812 | syncStatus = FailedSyncStatus(); |
| 813 | return; |
| 814 | } |
| 815 | await _updateBalance(); |
| 816 | |
| 817 | await Future.wait([ |
| 818 | _updateTransactions(), |
| 819 | _getEstimatedFees( |
| 820 | hasPriorityFee ? EVMChainTransactionPriority.medium : null, |
| 821 | ), // We're using medium priority for default estimation |
| 822 | ]); |
| 823 | |
| 824 | syncStatus = SyncedSyncStatus(); |
| 825 | } catch (e) { |
| 826 | syncStatus = FailedSyncStatus(); |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | @override |
| 831 | Future<PendingTransaction> createTransaction(Object credentials) async { |
| 832 | final _credentials = credentials as EVMChainTransactionCredentials; |
| 833 | final outputs = _credentials.outputs; |
| 834 | final hasMultiDestination = outputs.length > 1; |
| 835 | |
| 836 | final String? opReturnMemo = outputs.first.memo; |
| 837 | |
| 838 | String? hexOpReturnMemo; |
| 839 | if (opReturnMemo != null) { |
| 840 | hexOpReturnMemo = |
| 841 | '0x${opReturnMemo.codeUnits.map((char) => char.toRadixString(16).padLeft(2, '0')).join()}'; |
| 842 | } |
| 843 | |
| 844 | final transactionCurrency = balance.keys.firstWhere( |
| 845 | (currency) => |
| 846 | currency.title == _credentials.currency.title && |
| 847 | (currency.tag == _credentials.currency.tag || |
| 848 | currency.tag == _credentials.currency.title), |
| 849 | orElse: () => throw Exception( |
| 850 | 'Currency ${_credentials.currency.title} ${_credentials.currency.tag} is not accessible in the wallet, try to enable it first.')); |
| 851 | |
| 852 | final currencyBalance = balance[transactionCurrency]!; |
| 853 | final toAddress = _credentials.outputs.first.isParsedAddress |
| 854 | ? _credentials.outputs.first.extractedAddress! |
| 855 | : _credentials.outputs.first.address; |
| 856 | var totalAmount = Money.zero(transactionCurrency); |
| 857 | var estimatedFeesForTransaction = Money.zero(currency); |
| 858 | var estimatedGasUnitsForTransaction = 0; |
| 859 | var maxFeePerGasForTransaction = 0; |
| 860 | |
| 861 | String? contractAddress; |
| 862 | |
| 863 | if (transactionCurrency is Erc20Token) { |
| 864 | contractAddress = transactionCurrency.contractAddress; |
| 865 | } |
| 866 | |
| 867 | // so far this can not be made with Ethereum as Ethereum does not support multiple recipients |
| 868 | if (hasMultiDestination) { |
| 869 | if (outputs.any((item) => item.sendAll || item.cryptoAmount.amount <= BigInt.zero)) { |
| 870 | throw EVMChainTransactionCreationException(transactionCurrency); |
| 871 | } |
| 872 | |
| 873 | totalAmount = outputs.fold<Money>(Money.zero(transactionCurrency), |
| 874 | (acc, output) => acc + output.cryptoAmount.copyWith(currency: transactionCurrency)); |
| 875 | |
| 876 | final gasFeesModel = await calculateActualEstimatedFeeForCreateTransaction( |
| 877 | amount: totalAmount, |
| 878 | receivingAddressHex: toAddress, |
| 879 | priority: _credentials.priority, |
| 880 | contractAddress: contractAddress, |
| 881 | ); |
| 882 | |
| 883 | estimatedFeesForTransaction = |
| 884 | estimatedFeesForTransaction.copyWith(amount: BigInt.from(gasFeesModel.estimatedGasFee)); |
| 885 | estimatedGasUnitsForTransaction = gasFeesModel.estimatedGasUnits; |
| 886 | maxFeePerGasForTransaction = gasFeesModel.maxFeePerGas; |
| 887 | |
| 888 | if (currencyBalance.available < totalAmount) { |
| 889 | throw EVMChainTransactionCreationException(transactionCurrency); |
| 890 | } |
| 891 | } else { |
| 892 | final output = outputs.first; |
| 893 | if (!output.sendAll) { |
| 894 | totalAmount = output.cryptoAmount.copyWith(currency: transactionCurrency); |
| 895 | } |
| 896 | |
| 897 | if (output.sendAll && transactionCurrency is Erc20Token) { |
| 898 | totalAmount = currencyBalance.available; |
| 899 | } |
| 900 | |
| 901 | final gasFeesModel = await calculateActualEstimatedFeeForCreateTransaction( |
| 902 | amount: totalAmount, |
| 903 | receivingAddressHex: toAddress, |
| 904 | priority: _credentials.priority, |
| 905 | contractAddress: contractAddress, |
| 906 | ); |
| 907 | |
| 908 | estimatedFeesForTransaction = |
| 909 | estimatedFeesForTransaction.copyWith(amount: BigInt.from(gasFeesModel.estimatedGasFee)); |
| 910 | estimatedGasUnitsForTransaction = gasFeesModel.estimatedGasUnits; |
| 911 | maxFeePerGasForTransaction = gasFeesModel.maxFeePerGas; |
| 912 | |
| 913 | if (output.sendAll && transactionCurrency is! Erc20Token) { |
| 914 | if (selectedChainId == 8453) { |
| 915 | // Applying a small buffer to account for gas price fluctuations |
| 916 | // 10% or minimum 10,000 wei, whichever is higher |
| 917 | final refinedGasFee = estimatedFeesForTransaction.amount; |
| 918 | final gasBufferPercent = refinedGasFee * BigInt.from(110) ~/ BigInt.from(100); |
| 919 | final gasBufferMin = refinedGasFee + BigInt.from(10000); |
| 920 | final gasBuffer = gasBufferPercent > gasBufferMin ? gasBufferPercent : gasBufferMin; |
| 921 | |
| 922 | // Using the buffered fee for the final amount |
| 923 | totalAmount = totalAmount.copyWith(amount: currencyBalance.available.amount - gasBuffer); |
| 924 | estimatedFeesForTransaction = estimatedFeesForTransaction.copyWith(amount: gasBuffer); |
| 925 | } else { |
| 926 | // Calculating the final amount with the estimated gas fee |
| 927 | totalAmount = currencyBalance.available - estimatedFeesForTransaction; |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | // check the fees on the base currency |
| 932 | if (estimatedFeesForTransaction > balance[currency]!.available) { |
| 933 | throw EVMChainTransactionFeesException.fromCurrency(currency.title); |
| 934 | } |
| 935 | |
| 936 | if (currencyBalance.available < totalAmount) { |
| 937 | throw EVMChainTransactionCreationException(transactionCurrency); |
| 938 | } |
| 939 | if (transactionCurrency is! Erc20Token && |
| 940 | totalAmount + estimatedFeesForTransaction > currencyBalance.available) { |
| 941 | throw EVMChainTransactionFeesException.fromCurrency(currency.title); |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | if (transactionCurrency is Erc20Token && |
| 946 | walletInfo.hardwareWalletType == HardwareWalletType.ledger) { |
| 947 | await (_evmChainPrivateKey as EvmLedgerCredentials) |
| 948 | .provideERC20Info(transactionCurrency.contractAddress, selectedChainId); |
| 949 | } |
| 950 | |
| 951 | final pendingEVMChainTransaction = await _client.signTransaction( |
| 952 | estimatedGasUnits: estimatedGasUnitsForTransaction, |
| 953 | privateKey: _evmChainPrivateKey, |
| 954 | toAddress: toAddress, |
| 955 | amount: totalAmount, |
| 956 | gasFee: estimatedFeesForTransaction, |
| 957 | priority: _credentials.priority, |
| 958 | currency: transactionCurrency, |
| 959 | feeCurrency: EVMChainUtils.getFeeCurrency(selectedChainId), |
| 960 | maxFeePerGas: maxFeePerGasForTransaction, |
| 961 | contractAddress: |
| 962 | transactionCurrency is Erc20Token ? transactionCurrency.contractAddress : null, |
| 963 | data: hexOpReturnMemo, |
| 964 | gasPrice: maxFeePerGasForTransaction, |
| 965 | useBlinkProtection: _credentials.useBlinkProtection, |
| 966 | ); |
| 967 | |
| 968 | return pendingEVMChainTransaction; |
| 969 | } |
| 970 | |
| 971 | Future<PendingTransaction> createCallDataTransaction( |
| 972 | String to, |
| 973 | String dataHex, |
| 974 | Money valueWei, |
| 975 | EVMChainTransactionPriority? priority, |
| 976 | String? sourceTokenAddress, |
| 977 | BigInt? sourceTokenAmount, { |
| 978 | bool useBlinkProtection = true, |
| 979 | }) async { |
| 980 | // Define Native Currency |
| 981 | final nativeCurrency = switch (selectedChainId) { |
| 982 | 137 => CryptoCurrency.maticpoly, |
| 983 | 56 => CryptoCurrency.bnb, |
| 984 | 8453 => CryptoCurrency.baseEth, |
| 985 | 42161 => CryptoCurrency.arbEth, |
| 986 | _ => CryptoCurrency.eth, |
| 987 | }; |
| 988 | |
| 989 | // Gas Estimation |
| 990 | GasParamsHandler gas; |
| 991 | try { |
| 992 | gas = await calculateActualEstimatedFeeForCreateTransaction( |
| 993 | amount: valueWei, |
| 994 | receivingAddressHex: to, |
| 995 | priority: priority, |
| 996 | contractAddress: null, |
| 997 | data: _client.hexToBytes(dataHex), |
| 998 | ); |
| 999 | } catch (_) { |
| 1000 | // If estimation fails, we proceed but will use a safe gas limit below. |
| 1001 | // This is common for complex swaps that depend on block state. |
| 1002 | gas = GasParamsHandler.zero(); |
| 1003 | } |
| 1004 | |
| 1005 | final nativeBal = balance[nativeCurrency]?.available ?? Money.zero(nativeCurrency); |
| 1006 | var requiredNative = Money.fromInt(gas.estimatedGasFee, nativeCurrency); |
| 1007 | |
| 1008 | if (valueWei.currency == nativeCurrency) { |
| 1009 | requiredNative += valueWei; |
| 1010 | } |
| 1011 | |
| 1012 | if (requiredNative > nativeBal) { |
| 1013 | throw Exception('Not enough ${nativeCurrency.title} to cover value and fees.'); |
| 1014 | } |
| 1015 | |
| 1016 | final cleanAddress = sourceTokenAddress?.toLowerCase() ?? ''; |
| 1017 | |
| 1018 | final isNativeSource = sourceTokenAddress == null || |
| 1019 | cleanAddress == '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee' || |
| 1020 | cleanAddress == '0x0000000000000000000000000000000000000000'; |
| 1021 | |
| 1022 | if (!isNativeSource && sourceTokenAmount != null && sourceTokenAmount > BigInt.zero) { |
| 1023 | final matchingTokens = balance.keys |
| 1024 | .where((k) => k is Erc20Token && k.contractAddress.toLowerCase() == cleanAddress); |
| 1025 | |
| 1026 | if (matchingTokens.isEmpty) { |
| 1027 | throw Exception('Insufficient token balance (Token not found in wallet).'); |
| 1028 | } |
| 1029 | |
| 1030 | final tokenKey = matchingTokens.first; |
| 1031 | final tokenBalance = balance[tokenKey]?.available ?? Money.zero(tokenKey); |
| 1032 | |
| 1033 | if (tokenBalance < Money(sourceTokenAmount, tokenKey)) { |
| 1034 | throw Exception('Insufficient ${tokenKey.symbol} balance to cover the transaction amount.'); |
| 1035 | } |
| 1036 | } |
| 1037 | |
| 1038 | // Final Safe Gas Limit |
| 1039 | // If estimation failed (0), use 300,000 as a safe default for swaps. |
| 1040 | final gasUnits = gas.estimatedGasUnits == 0 ? 300000 : gas.estimatedGasUnits; |
| 1041 | |
| 1042 | try { |
| 1043 | return _client.signTransaction( |
| 1044 | privateKey: _evmChainPrivateKey, |
| 1045 | toAddress: to, |
| 1046 | amount: valueWei, |
| 1047 | gasFee: Money.fromInt(gas.estimatedGasFee, currency), |
| 1048 | estimatedGasUnits: gasUnits, |
| 1049 | maxFeePerGas: gas.maxFeePerGas, |
| 1050 | priority: priority, |
| 1051 | currency: nativeCurrency, |
| 1052 | feeCurrency: nativeCurrency.title, |
| 1053 | contractAddress: null, |
| 1054 | data: dataHex, |
| 1055 | gasPrice: gas.gasPrice, |
| 1056 | useBlinkProtection: useBlinkProtection, |
| 1057 | ); |
| 1058 | } catch (_) { |
| 1059 | throw Exception('Failed to create the transaction.'); |
| 1060 | } |
| 1061 | } |
| 1062 | |
| 1063 | Future<PendingTransaction> createApprovalTransaction( |
| 1064 | Money amount, String spender, EVMChainTransactionPriority? priority, |
| 1065 | {bool useBlinkProtection = true}) async { |
| 1066 | final transactionCurrency = |
| 1067 | balance.keys.firstWhere((element) => element.symbol == amount.currency.symbol); |
| 1068 | assert(transactionCurrency is Erc20Token); |
| 1069 | |
| 1070 | final data = _client.getEncodedDataForApprovalTransaction( |
| 1071 | contractAddress: EthereumAddress.fromHex((transactionCurrency as Erc20Token).contractAddress), |
| 1072 | value: EtherAmount.fromBigInt(EtherUnit.wei, amount.amount), |
| 1073 | toAddress: EthereumAddress.fromHex(spender), |
| 1074 | ); |
| 1075 | |
| 1076 | final tokenContract = transactionCurrency.contractAddress; |
| 1077 | |
| 1078 | final gasFeesModel = await calculateActualEstimatedFeeForCreateTransaction( |
| 1079 | amount: Money.zero(currency), |
| 1080 | receivingAddressHex: tokenContract, |
| 1081 | priority: priority, |
| 1082 | contractAddress: tokenContract, |
| 1083 | data: data, |
| 1084 | ); |
| 1085 | |
| 1086 | final int safeGasUnits = gasFeesModel.estimatedGasUnits == 0 |
| 1087 | ? 65000 |
| 1088 | : (gasFeesModel.estimatedGasUnits < 65000 ? 65000 : gasFeesModel.estimatedGasUnits); |
| 1089 | |
| 1090 | return _client.signApprovalTransaction( |
| 1091 | privateKey: _evmChainPrivateKey, |
| 1092 | spender: spender, |
| 1093 | amount: amount, |
| 1094 | priority: priority, |
| 1095 | gasFee: Money.fromInt(gasFeesModel.estimatedGasFee, currency), |
| 1096 | maxFeePerGas: gasFeesModel.maxFeePerGas, |
| 1097 | estimatedGasUnits: safeGasUnits, |
| 1098 | contractAddress: tokenContract, |
| 1099 | gasPrice: gasFeesModel.gasPrice, |
| 1100 | useBlinkProtection: useBlinkProtection, |
| 1101 | ); |
| 1102 | } |
| 1103 | |
| 1104 | Future<void> _updateTransactions() async { |
| 1105 | try { |
| 1106 | if (_isTransactionUpdating) { |
| 1107 | return; |
| 1108 | } |
| 1109 | |
| 1110 | final isProviderEnabled = await checkIfScanProviderIsEnabled(); |
| 1111 | |
| 1112 | if (!isProviderEnabled) { |
| 1113 | return; |
| 1114 | } |
| 1115 | |
| 1116 | _isTransactionUpdating = true; |
| 1117 | final transactions = await fetchTransactions(); |
| 1118 | transactionHistory.addMany(transactions); |
| 1119 | await transactionHistory.save(); |
| 1120 | _isTransactionUpdating = false; |
| 1121 | } catch (_) { |
| 1122 | _isTransactionUpdating = false; |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | @override |
| 1127 | Future<Map<String, EVMChainTransactionInfo>> fetchTransactions() async { |
| 1128 | final List<EVMChainTransactionModel> transactions = []; |
| 1129 | final List<Future<List<EVMChainTransactionModel>>> erc20TokensTransactions = []; |
| 1130 | |
| 1131 | final address = _evmChainPrivateKey.address.hex; |
| 1132 | final externalTransactions = await _client.fetchTransactions(address); |
| 1133 | final internalTransactions = await _client.fetchInternalTransactions(address); |
| 1134 | |
| 1135 | for (var transaction in externalTransactions) { |
| 1136 | final evmSignatureName = analyzeTransaction(transaction.input); |
| 1137 | |
| 1138 | if (evmSignatureName != 'depositWithExpiry' && evmSignatureName != 'transfer') { |
| 1139 | transaction.evmSignatureName = evmSignatureName; |
| 1140 | transactions.add(transaction); |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | for (var token in balance.keys) { |
| 1145 | if (token is Erc20Token) { |
| 1146 | erc20TokensTransactions.add(_client.fetchTransactions( |
| 1147 | address, |
| 1148 | contractAddress: token.contractAddress, |
| 1149 | )); |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | final tokensTransaction = await Future.wait(erc20TokensTransactions); |
| 1154 | transactions.addAll(tokensTransaction.expand((element) => element)); |
| 1155 | transactions.addAll(internalTransactions); |
| 1156 | |
| 1157 | final Map<String, EVMChainTransactionInfo> result = {}; |
| 1158 | |
| 1159 | for (var transactionModel in transactions) { |
| 1160 | if (transactionModel.isError) { |
| 1161 | continue; |
| 1162 | } |
| 1163 | |
| 1164 | final newTxInfo = getTransactionInfo(transactionModel, address); |
| 1165 | final existingTxInfo = result[transactionModel.hash]; |
| 1166 | final savedTxInfo = transactionHistory.transactions[transactionModel.hash]; |
| 1167 | |
| 1168 | // Prioritize saved incoming transactions |
| 1169 | if (savedTxInfo != null && |
| 1170 | savedTxInfo.direction == TransactionDirection.incoming && |
| 1171 | newTxInfo.direction == TransactionDirection.outgoing) { |
| 1172 | result[transactionModel.hash] = savedTxInfo; |
| 1173 | continue; |
| 1174 | } |
| 1175 | |
| 1176 | if (existingTxInfo == null) { |
| 1177 | result[transactionModel.hash] = newTxInfo; |
| 1178 | } else if (newTxInfo.direction == TransactionDirection.incoming && |
| 1179 | existingTxInfo.direction == TransactionDirection.outgoing) { |
| 1180 | result[transactionModel.hash] = newTxInfo; |
| 1181 | } else if (newTxInfo.direction == TransactionDirection.outgoing && |
| 1182 | existingTxInfo.direction == TransactionDirection.outgoing && |
| 1183 | _hasEvmTokenContractAddress(newTxInfo) && |
| 1184 | !_hasEvmTokenContractAddress(existingTxInfo)) { |
| 1185 | result[transactionModel.hash] = newTxInfo; |
| 1186 | } else if (existingTxInfo.isPending) { |
| 1187 | result[transactionModel.hash] = newTxInfo; |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | return result; |
| 1192 | } |
| 1193 | |
| 1194 | bool _hasEvmTokenContractAddress(EVMChainTransactionInfo info) { |
| 1195 | final c = info.contractAddress; |
| 1196 | return c != null && c.isNotEmpty; |
| 1197 | } |
| 1198 | |
| 1199 | String? analyzeTransaction(String? transactionInput) { |
| 1200 | if (transactionInput == '0x' || transactionInput == null || transactionInput.isEmpty) { |
| 1201 | return ''; |
| 1202 | } |
| 1203 | |
| 1204 | final methodSignature = |
| 1205 | transactionInput.length >= 10 ? transactionInput.substring(0, 10) : null; |
| 1206 | |
| 1207 | return methodSignatureToType[methodSignature]; |
| 1208 | } |
| 1209 | |
| 1210 | @override |
| 1211 | Object get keys => throw UnimplementedError("keys"); |
| 1212 | |
| 1213 | @override |
| 1214 | Future<void> rescan({required int height}) { |
| 1215 | throw UnimplementedError("rescan"); |
| 1216 | } |
| 1217 | |
| 1218 | @override |
| 1219 | Future<void> save() async { |
| 1220 | if (!(await WalletKeysFile.hasKeysFile(walletInfo.name, walletInfo.type))) { |
| 1221 | await saveKeysFile(_password, encryptionFileUtils); |
| 1222 | saveKeysFile(_password, encryptionFileUtils, true); |
| 1223 | } |
| 1224 | |
| 1225 | await walletAddresses.updateAddressesInBox(); |
| 1226 | final path = await makePath(); |
| 1227 | await encryptionFileUtils.write(path: path, password: _password, data: toJSON()); |
| 1228 | await transactionHistory.save(); |
| 1229 | } |
| 1230 | |
| 1231 | @override |
| 1232 | String? get seed => _mnemonic; |
| 1233 | |
| 1234 | @override |
| 1235 | String? get privateKey => evmChainPrivateKey is EthPrivateKey |
| 1236 | ? HEX.encode((evmChainPrivateKey as EthPrivateKey).privateKey) |
| 1237 | : null; |
| 1238 | |
| 1239 | @override |
| 1240 | WalletKeysData get walletKeysData => WalletKeysData( |
| 1241 | mnemonic: _mnemonic, |
| 1242 | privateKey: privateKey, |
| 1243 | passphrase: passphrase, |
| 1244 | ); |
| 1245 | |
| 1246 | String toJSON() => json.encode({ |
| 1247 | 'mnemonic': _mnemonic, |
| 1248 | 'private_key': privateKey, |
| 1249 | 'balance': |
| 1250 | balance[currency]?.toJSON() ?? EVMChainERC20Balance(Money.zero(currency)).toJSON(), |
| 1251 | 'passphrase': passphrase, |
| 1252 | 'selected_chain_id': selectedChainId, |
| 1253 | }); |
| 1254 | |
| 1255 | Future<void> _updateBalance() async { |
| 1256 | balance[currency] = await _fetchEVMChainBalance(); |
| 1257 | |
| 1258 | await _fetchErc20Balances(); |
| 1259 | await save(); |
| 1260 | } |
| 1261 | |
| 1262 | Future<EVMChainERC20Balance> _fetchEVMChainBalance() async { |
| 1263 | try { |
| 1264 | final balance = await _client.getBalance(_evmChainPrivateKey.address); |
| 1265 | |
| 1266 | return EVMChainERC20Balance(Money(balance.getInWei, currency)); |
| 1267 | } catch (_) { |
| 1268 | return balance[currency] ?? EVMChainERC20Balance(Money.zero(currency)); |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | bool _isTokenMatchingChain(Erc20Token token) { |
| 1273 | final registry = EvmChainRegistry(); |
| 1274 | |
| 1275 | if (token.tag != null) { |
| 1276 | final chainConfig = registry.getChainConfigByTag(token.tag!); |
| 1277 | if (chainConfig != null) return chainConfig.chainId == selectedChainId; |
| 1278 | } |
| 1279 | |
| 1280 | if (currency.tag == null) return token.tag == currency.title; |
| 1281 | |
| 1282 | return token.tag?.toLowerCase() == currency.tag?.toLowerCase(); |
| 1283 | } |
| 1284 | |
| 1285 | Future<void> _fetchErc20Balances() async { |
| 1286 | // First, clean up any tokens in balance map that don't belong to current chain |
| 1287 | // This handles tokens from previous chains that might still be in the balance map |
| 1288 | final tokensInBalance = balance.keys.whereType<Erc20Token>().toList(); |
| 1289 | final tokens = _erc20Tokens.toList(); |
| 1290 | final cachedTokenAddresses = tokens.map((t) => t.contractAddress.toLowerCase()).toSet(); |
| 1291 | |
| 1292 | for (var token in tokensInBalance) { |
| 1293 | // Remove token if it's not in the current token list or doesn't match current chain |
| 1294 | if (!cachedTokenAddresses.contains(token.contractAddress.toLowerCase()) || |
| 1295 | !_isTokenMatchingChain(token)) { |
| 1296 | balance.remove(token); |
| 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | for (var token in tokens) { |
| 1301 | if (!_isTokenMatchingChain(token)) { |
| 1302 | printV('NOTEE!!!: Token ${token.title} is not matching the currency ${currency.title}'); |
| 1303 | try { |
| 1304 | await deleteErc20Token(token, shouldUpdateBalance: false); |
| 1305 | } catch (e) { |
| 1306 | balance.remove(token); |
| 1307 | printV('Error deleting token ${token.title}: $e'); |
| 1308 | } |
| 1309 | continue; |
| 1310 | } |
| 1311 | |
| 1312 | try { |
| 1313 | if (token.enabled) { |
| 1314 | balance[token] = await _client.fetchERC20Balances(_evmChainPrivateKey.address, token); |
| 1315 | } else { |
| 1316 | balance.remove(token); |
| 1317 | } |
| 1318 | } catch (_) {} |
| 1319 | } |
| 1320 | } |
| 1321 | |
| 1322 | Future<bool> isApprovalRequired( |
| 1323 | String tokenContract, String spender, BigInt requiredAmount) async { |
| 1324 | const zero = '0x0000000000000000000000000000000000000000'; |
| 1325 | const evmNative = '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE'; |
| 1326 | |
| 1327 | final token = tokenContract.toLowerCase(); |
| 1328 | if (token == zero || token == evmNative.toLowerCase()) return false; |
| 1329 | if (requiredAmount <= BigInt.zero) return false; |
| 1330 | try { |
| 1331 | final allowance = await getAllowance(tokenContract, spender); |
| 1332 | if (allowance == null) { |
| 1333 | printV('Could not fetch allowance for $tokenContract, assuming approval is required'); |
| 1334 | return true; |
| 1335 | } |
| 1336 | return allowance < requiredAmount; |
| 1337 | } catch (e) { |
| 1338 | printV('approval-check error: $e'); |
| 1339 | return true; |
| 1340 | } |
| 1341 | } |
| 1342 | |
| 1343 | Future<BigInt?> getAllowance(String tokenContract, String spender) async { |
| 1344 | try { |
| 1345 | final owner = _evmChainPrivateKey.address; |
| 1346 | final erc20 = ERC20( |
| 1347 | client: _client.getWeb3Client()!, |
| 1348 | address: EthereumAddress.fromHex(tokenContract), |
| 1349 | chainId: selectedChainId, |
| 1350 | ); |
| 1351 | |
| 1352 | final allowance = await erc20.allowance(owner, EthereumAddress.fromHex(spender)); |
| 1353 | return allowance; |
| 1354 | } catch (e) { |
| 1355 | printV('getAllowance error: $e'); |
| 1356 | return null; |
| 1357 | } |
| 1358 | } |
| 1359 | |
| 1360 | Future<EthPrivateKey> getPrivateKey({ |
| 1361 | String? mnemonic, |
| 1362 | String? privateKey, |
| 1363 | required String password, |
| 1364 | String? passphrase, |
| 1365 | }) async { |
| 1366 | assert(mnemonic != null || privateKey != null); |
| 1367 | |
| 1368 | if (privateKey != null) { |
| 1369 | return EthPrivateKey.fromHex(privateKey); |
| 1370 | } |
| 1371 | |
| 1372 | final seed = bip39.mnemonicToSeed(mnemonic!, passphrase: passphrase ?? ''); |
| 1373 | |
| 1374 | final root = bip32.BIP32.fromSeed(seed); |
| 1375 | |
| 1376 | const hdPathEVMChain = "m/44'/60'/0'/0"; |
| 1377 | const index = 0; |
| 1378 | final addressAtIndex = root.derivePath("$hdPathEVMChain/$index"); |
| 1379 | |
| 1380 | return EthPrivateKey.fromHex(HEX.encode(addressAtIndex.privateKey as List<int>)); |
| 1381 | } |
| 1382 | |
| 1383 | @override |
| 1384 | Future<void>? updateBalance() async => await _updateBalance(); |
| 1385 | @override |
| 1386 | Future<void> updateTransactionsHistory() async => await _updateTransactions(); |
| 1387 | |
| 1388 | List<Erc20Token> get erc20Currencies => _erc20Tokens.toList(); |
| 1389 | |
| 1390 | Future<void> addErc20Token(Erc20Token token) async { |
| 1391 | final isSuspicious = isTokenPropertiesSuspicious(token); |
| 1392 | token.isPotentialScam = token.isPotentialScam || isSuspicious; |
| 1393 | |
| 1394 | String? iconPath; |
| 1395 | |
| 1396 | if ((token.iconPath == null || token.iconPath!.isEmpty) && !token.isPotentialScam) { |
| 1397 | try { |
| 1398 | iconPath = CryptoCurrency.all |
| 1399 | .firstWhere((element) => element.title.toUpperCase() == token.symbol.toUpperCase()) |
| 1400 | .iconPath; |
| 1401 | } catch (_) {} |
| 1402 | } else if (!token.isPotentialScam) { |
| 1403 | iconPath = token.iconPath; |
| 1404 | } |
| 1405 | |
| 1406 | final newToken = createNewErc20TokenObject(token, iconPath); |
| 1407 | |
| 1408 | if (newToken.enabled) { |
| 1409 | balance[newToken] = await _client.fetchERC20Balances(_evmChainPrivateKey.address, newToken); |
| 1410 | |
| 1411 | await newToken.save(); |
| 1412 | } else { |
| 1413 | await newToken.save(); |
| 1414 | balance.remove(newToken); |
| 1415 | } |
| 1416 | |
| 1417 | _upsertCachedToken(newToken); |
| 1418 | } |
| 1419 | |
| 1420 | Future<void> deleteErc20Token(Erc20Token token, {bool shouldUpdateBalance = true}) async { |
| 1421 | try { |
| 1422 | await Erc20Token.deleteForWallet(walletInfo.name, selectedChainId, token.contractAddress); |
| 1423 | } catch (e) { |
| 1424 | printV('Error deleting token: $e'); |
| 1425 | } |
| 1426 | |
| 1427 | _erc20Tokens |
| 1428 | .removeWhere((t) => t.contractAddress.toLowerCase() == token.contractAddress.toLowerCase()); |
| 1429 | |
| 1430 | balance.remove(token); |
| 1431 | await removeTokenTransactionsInHistory(token); |
| 1432 | if (shouldUpdateBalance) { |
| 1433 | _updateBalance(); |
| 1434 | } |
| 1435 | } |
| 1436 | |
| 1437 | Future<void> removeTokenTransactionsInHistory(Erc20Token token) async { |
| 1438 | transactionHistory.transactions.removeWhere((key, value) => value.tokenSymbol == token.title); |
| 1439 | await transactionHistory.save(); |
| 1440 | } |
| 1441 | |
| 1442 | Future<Erc20Token?> getErc20Token(String contractAddress, String chainName) async { |
| 1443 | try { |
| 1444 | return await _client.getErc20Token(contractAddress, chainName); |
| 1445 | } catch (e) { |
| 1446 | printV('Error getting ERC20 token: $e'); |
| 1447 | rethrow; |
| 1448 | } |
| 1449 | } |
| 1450 | |
| 1451 | void _onNewTransaction() { |
| 1452 | _updateBalance(); |
| 1453 | _updateTransactions(); |
| 1454 | } |
| 1455 | |
| 1456 | /// Static method to open an existing wallet |
| 1457 | static Future<EVMChainWallet> open({ |
| 1458 | required String name, |
| 1459 | required String password, |
| 1460 | required WalletInfo walletInfo, |
| 1461 | required EncryptionFileUtils encryptionFileUtils, |
| 1462 | }) async { |
| 1463 | final hasKeysFile = await WalletKeysFile.hasKeysFile(name, walletInfo.type); |
| 1464 | final path = await pathForWallet(name: name, type: walletInfo.type); |
| 1465 | |
| 1466 | Map<String, dynamic>? data; |
| 1467 | try { |
| 1468 | final jsonSource = await encryptionFileUtils.read(path: path, password: password); |
| 1469 | data = json.decode(jsonSource) as Map<String, dynamic>; |
| 1470 | } catch (e) { |
| 1471 | if (!hasKeysFile) rethrow; |
| 1472 | } |
| 1473 | |
| 1474 | final WalletKeysData keysData; |
| 1475 | // Migrate wallet from the old scheme to the new .keys file scheme |
| 1476 | if (!hasKeysFile) { |
| 1477 | final mnemonic = data!['mnemonic'] as String?; |
| 1478 | final privateKey = data['private_key'] as String?; |
| 1479 | final passphrase = data['passphrase'] as String?; |
| 1480 | |
| 1481 | keysData = WalletKeysData( |
| 1482 | mnemonic: mnemonic, |
| 1483 | privateKey: privateKey, |
| 1484 | passphrase: passphrase, |
| 1485 | ); |
| 1486 | } else { |
| 1487 | keysData = await WalletKeysFile.readKeysFile( |
| 1488 | name, |
| 1489 | walletInfo.type, |
| 1490 | password, |
| 1491 | encryptionFileUtils, |
| 1492 | ); |
| 1493 | } |
| 1494 | |
| 1495 | final savedChainId = data?['selected_chain_id'] as int?; |
| 1496 | |
| 1497 | final registry = EvmChainRegistry(); |
| 1498 | |
| 1499 | // Get chainId from wallet type, use saved chainId if available (for chain switching) |
| 1500 | final defaultChainId = registry.getChainConfigByWalletType(walletInfo.type)?.chainId; |
| 1501 | if (defaultChainId == null) { |
| 1502 | throw Exception('Chain config not found for wallet type: ${walletInfo.type}'); |
| 1503 | } |
| 1504 | |
| 1505 | // Use saved chainId if available, otherwise default to wallet type's chainId |
| 1506 | final chainId = savedChainId ?? defaultChainId; |
| 1507 | |
| 1508 | final chainConfig = registry.getChainConfig(chainId); |
| 1509 | if (chainConfig == null) { |
| 1510 | throw Exception('Chain config not found for chainId: $chainId'); |
| 1511 | } |
| 1512 | |
| 1513 | final client = EVMChainClientFactory.createClient(chainId); |
| 1514 | |
| 1515 | // Use saved chainId if available, otherwise use the computed chainId |
| 1516 | final initialChainIdForWallet = savedChainId ?? chainId; |
| 1517 | |
| 1518 | final balance = |
| 1519 | EVMChainERC20Balance.fromJSON(data?['balance'] as String?, chainConfig.nativeCurrency) ?? |
| 1520 | EVMChainERC20Balance(Money.zero(chainConfig.nativeCurrency)); |
| 1521 | |
| 1522 | return EVMChainWallet( |
| 1523 | walletInfo: walletInfo, |
| 1524 | derivationInfo: await walletInfo.getDerivationInfo(), |
| 1525 | password: password, |
| 1526 | mnemonic: keysData.mnemonic, |
| 1527 | privateKey: keysData.privateKey, |
| 1528 | passphrase: keysData.passphrase, |
| 1529 | initialBalance: balance, |
| 1530 | client: client, |
| 1531 | nativeCurrency: chainConfig.nativeCurrency, |
| 1532 | encryptionFileUtils: encryptionFileUtils, |
| 1533 | initialChainId: initialChainIdForWallet, |
| 1534 | ); |
| 1535 | } |
| 1536 | |
| 1537 | void _setTransactionUpdateTimer() { |
| 1538 | if (_transactionsUpdateTimer?.isActive ?? false) { |
| 1539 | _transactionsUpdateTimer!.cancel(); |
| 1540 | } |
| 1541 | |
| 1542 | _transactionsUpdateTimer = Timer.periodic(const Duration(seconds: 20), (_) { |
| 1543 | _updateTransactions(); |
| 1544 | _updateBalance(); |
| 1545 | }); |
| 1546 | } |
| 1547 | |
| 1548 | /// Scan Providers: |
| 1549 | /// |
| 1550 | /// EtherScan for Ethereum. |
| 1551 | /// |
| 1552 | /// PolygonScan for Polygon. |
| 1553 | /// |
| 1554 | /// BaseScan for Base. |
| 1555 | /// |
| 1556 | /// ArbiScan for Arbitrum. |
| 1557 | void updateScanProviderUsageState(bool isEnabled) { |
| 1558 | if (isEnabled) { |
| 1559 | _updateTransactions(); |
| 1560 | _setTransactionUpdateTimer(); |
| 1561 | } else { |
| 1562 | _transactionsUpdateTimer?.cancel(); |
| 1563 | } |
| 1564 | } |
| 1565 | |
| 1566 | @override |
| 1567 | Future<String> signMessage(String message, {String? address}) async { |
| 1568 | return bytesToHex(await _evmChainPrivateKey.signPersonalMessage(ascii.encode(message))); |
| 1569 | } |
| 1570 | |
| 1571 | @override |
| 1572 | Future<bool> verifyMessage(String message, String signature, {String? address}) async { |
| 1573 | if (address == null) { |
| 1574 | return false; |
| 1575 | } |
| 1576 | final recoveredAddress = EthSigUtil.recoverPersonalSignature( |
| 1577 | message: ascii.encode(message), |
| 1578 | signature: signature, |
| 1579 | ); |
| 1580 | return recoveredAddress.toUpperCase() == address.toUpperCase(); |
| 1581 | } |
| 1582 | |
| 1583 | Web3Client? getWeb3Client() => _client.getWeb3Client(); |
| 1584 | |
| 1585 | @override |
| 1586 | String get password => _password; |
| 1587 | |
| 1588 | @override |
| 1589 | final String? passphrase; |
| 1590 | } |
| 1591 | |
| 1592 | class GasParamsHandler { |
| 1593 | final int estimatedGasUnits; |
| 1594 | final int estimatedGasFee; |
| 1595 | final int maxFeePerGas; |
| 1596 | final int gasPrice; |
| 1597 | |
| 1598 | GasParamsHandler( |
| 1599 | {required this.estimatedGasUnits, |
| 1600 | required this.estimatedGasFee, |
| 1601 | required this.maxFeePerGas, |
| 1602 | required this.gasPrice}); |
| 1603 | |
| 1604 | static GasParamsHandler zero() { |
| 1605 | return GasParamsHandler( |
| 1606 | estimatedGasUnits: 0, |
| 1607 | estimatedGasFee: 0, |
| 1608 | maxFeePerGas: 0, |
| 1609 | gasPrice: 0, |
| 1610 | ); |
| 1611 | } |
| 1612 | } |
| 1613 | |
| 1614 | class DiscoveredToken { |
| 1615 | final Erc20Token token; |
| 1616 | final BigInt balanceWei; |
| 1617 | final bool verifiedContract; |
| 1618 | final double? moralisUsdPrice; |
| 1619 | final double? moralisUsdValue; |
| 1620 | |
| 1621 | const DiscoveredToken({ |
| 1622 | required this.token, |
| 1623 | required this.balanceWei, |
| 1624 | required this.verifiedContract, |
| 1625 | this.moralisUsdPrice, |
| 1626 | this.moralisUsdValue, |
| 1627 | }); |
| 1628 | } |
| 1629 | |
| 1630 | class MoralisDiscoveryResult { |
| 1631 | final List<DiscoveredToken> newTokens; |
| 1632 | |
| 1633 | const MoralisDiscoveryResult({required this.newTokens}); |
| 1634 | |
| 1635 | static const MoralisDiscoveryResult empty = MoralisDiscoveryResult(newTokens: []); |
| 1636 | } |
| 1637 | |
| 1638 | class WalletConnectBufferedFeeData { |
| 1639 | const WalletConnectBufferedFeeData({ |
| 1640 | required this.maxFeePerGasWei, |
| 1641 | required this.maxPriorityFeePerGasWei, |
| 1642 | this.latestBaseFeeWei, |
| 1643 | }); |
| 1644 | |
| 1645 | final int maxFeePerGasWei; |
| 1646 | final int maxPriorityFeePerGasWei; |
| 1647 | final int? latestBaseFeeWei; |
| 1648 | } |