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Add send erc20 tokens initial function

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This commit is contained in:
OmarHatem 2023-05-30 22:26:37 +03:00
parent bb6f64ea97
commit c1b81d135b
1 changed files with 35 additions and 6 deletions
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41
cw_ethereum/lib/ethereum_client.dart
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@ -8,6 +8,12 @@ import 'package:cw_core/node.dart';
import 'package:cw_ethereum/ethereum_transaction_priority.dart';
class EthereumClient {
static const Map<CryptoCurrency, String> _erc20Currencies = {
CryptoCurrency.usdc: "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
CryptoCurrency.usdterc20: "0xdac17f958d2ee523a2206206994597c13d831ec7",
CryptoCurrency.shib: "0x95aD61b0a150d79219dCF64E1E6Cc01f0B64C4cE",
};
Web3Client? _client;
bool connect(Node node) {
@ -154,6 +160,7 @@ I/flutter ( 4474): Gas Used: 53000
final balance = await _client!.call(
contract: contract,
function: balanceFunction,
// test address: 0x1715a3E4A142d8b698131108995174F37aEBA10D
params: [userAddress],
);
@ -177,10 +184,32 @@ I/flutter ( 4474): Gas Used: 53000
return erc20Balances;
}
}
Map<CryptoCurrency, String> _erc20Currencies = {
CryptoCurrency.usdc: "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
CryptoCurrency.usdterc20: "0xdac17f958d2ee523a2206206994597c13d831ec7",
CryptoCurrency.shib: "0x95aD61b0a150d79219dCF64E1E6Cc01f0B64C4cE",
};
Future<bool> sendERC20Token(
EthereumAddress to, CryptoCurrency erc20Currency, BigInt amount) async {
if (_erc20Currencies[erc20Currency] == null) {
throw "Unsupported ERC20 token";
}
try {
final String abi = await rootBundle.loadString("assets/abi_json/erc20_abi.json");
final contractAbi = ContractAbi.fromJson(abi, "ERC20");
final contract = DeployedContract(
contractAbi,
EthereumAddress.fromHex(_erc20Currencies[erc20Currency]!),
);
final transferFunction = contract.function('transfer');
final success = await _client!.call(
contract: contract,
function: transferFunction,
params: [to, amount],
);
return success.first as bool;
} catch (e) {
return false;
}
}
}