| 1 | import 'package:cw_core/crypto_currency.dart'; |
| 2 | |
| 3 | class EVMChainMnemonicIsIncorrectException implements Exception { |
| 4 | @override |
| 5 | String toString() => |
| 6 | 'EVM mnemonic has incorrect format. Mnemonic should contain 12 or 24 words separated by space.'; |
| 7 | } |
| 8 | |
| 9 | class EVMChainTransactionCreationException implements Exception { |
| 10 | final String exceptionMessage; |
| 11 | |
| 12 | EVMChainTransactionCreationException(CryptoCurrency currency) |
| 13 | : exceptionMessage = 'Wrong balance. Not enough ${currency.title} on your balance.'; |
| 14 | |
| 15 | EVMChainTransactionCreationException.fromMessage(this.exceptionMessage); |
| 16 | |
| 17 | @override |
| 18 | String toString() => exceptionMessage; |
| 19 | } |
| 20 | |
| 21 | class EVMChainTransactionFeesException implements Exception { |
| 22 | final String exceptionMessage; |
| 23 | |
| 24 | EVMChainTransactionFeesException(String message) : exceptionMessage = message; |
| 25 | |
| 26 | EVMChainTransactionFeesException.fromCurrency(String currency) |
| 27 | : exceptionMessage = |
| 28 | 'Transaction failed due to insufficient $currency balance to cover the fees.'; |
| 29 | |
| 30 | @override |
| 31 | String toString() => exceptionMessage; |
| 32 | } |
| 33 | |
| 34 | class InsufficientGasFeeException implements Exception { |
| 35 | final String exceptionMessage; |
| 36 | final BigInt? requiredGasFee; |
| 37 | final BigInt? currentBalance; |
| 38 | |
| 39 | InsufficientGasFeeException({ |
| 40 | this.requiredGasFee, |
| 41 | this.currentBalance, |
| 42 | }) : exceptionMessage = _buildMessage(requiredGasFee, currentBalance); |
| 43 | |
| 44 | static String _buildMessage(BigInt? requiredGasFee, BigInt? currentBalance) { |
| 45 | const baseMessage = 'Insufficient ETH for gas fees.'; |
| 46 | const addEthMessage = ' Please add ETH to your wallet to cover transaction fees.'; |
| 47 | |
| 48 | if (requiredGasFee != null) { |
| 49 | final requiredEth = (requiredGasFee / BigInt.from(10).pow(18)).toStringAsFixed(8); |
| 50 | final balanceInfo = currentBalance != null |
| 51 | ? ', Available: ${(currentBalance / BigInt.from(10).pow(18)).toStringAsFixed(8)} ETH' |
| 52 | : ''; |
| 53 | return '$baseMessage Required: ~$requiredEth ETH$balanceInfo.$addEthMessage'; |
| 54 | } |
| 55 | |
| 56 | return '$baseMessage$addEthMessage'; |
| 57 | } |
| 58 | |
| 59 | @override |
| 60 | String toString() => exceptionMessage; |
| 61 | } |