public async Task <Result <decimal> > GetERC20AllowanceAsync(
EthereumTokens.ERC20 erc20,
string tokenAddress,
FunctionMessage allowanceMessage,
CancellationToken cancellationToken = default)
{
try
{
var web3 = new Web3(_uri);
if (!(allowanceMessage is ERC20AllowanceFunctionMessage allowMes))
{
throw new NotSupportedException("Not supported message type");
}
//var tokenService = new StandardTokenService(web3, contractAddress);
//var allowance = await tokenService.AllowanceQueryAsync(allowMes.Owner, allowMes.Spender)
// .ConfigureAwait(false);
var contractHandler = web3.Eth.GetContractHandler(tokenAddress);
var result = await contractHandler
.QueryAsync <ERC20AllowanceFunctionMessage, BigInteger>(allowMes)
.ConfigureAwait(false);
return(result != null
? erc20.TokenDigitsToTokens(result)
: 0);
}
catch (Exception e)
{
return(new Error(Errors.RequestError, e.Message));
}
}
public async Task <Result <decimal> > GetERC20AllowanceAsync(
Erc20Config erc20,
string tokenAddress,
FunctionMessage allowanceMessage,
CancellationToken cancellationToken = default)
{
try
{
var callData = (allowanceMessage as ERC20AllowanceFunctionMessage)
.GetCallData()
.ToHex(prefix: true);
return(await HttpHelper.GetAsyncResult <decimal>(
baseUri : BaseUrl,
requestUri : $"api?module=proxy&action=eth_call&to={tokenAddress}&data={callData}&tag=latest&apikey={ApiKey}",
responseHandler : (response, content) =>
{
var result = JsonConvert.DeserializeObject <JObject>(content);
var allowanceHex = result?["result"]?.Value <string>();
return !string.IsNullOrEmpty(allowanceHex)
? erc20.TokenDigitsToTokens(new HexBigInteger(allowanceHex).Value)
: 0;
},
cancellationToken : cancellationToken)
.ConfigureAwait(false));
}
catch (Exception e)
{
return(new Error(Errors.RequestError, e.Message));
}
}
public async Task <Result <decimal> > GetERC20AllowanceAsync(
EthereumTokens.ERC20 erc20,
string tokenAddress,
FunctionMessage allowanceMessage,
CancellationToken cancellationToken = default)
{
return(await _web3.GetERC20AllowanceAsync(
erc20 : erc20,
tokenAddress : tokenAddress,
allowanceMessage : allowanceMessage,
cancellationToken : cancellationToken)
.ConfigureAwait(false));
}
public void LogGivenSendTransaction(FunctionMessage transactionMessage)
{
_writer.WriteLine("Given I Send Tranasction");
_writer.WriteLine(Stateprinter.PrintObject(transactionMessage));
}
public void LogWhenQueryFunction(FunctionMessage queryFunction)
{
_writer.WriteLine("When Querying Function:");
_writer.WriteLine(Stateprinter.PrintObject(queryFunction));
}
public void LogWhenQueryFunctionThen(FunctionMessage queryFunction, object outputDTO)
{
LogWhenQueryFunction(queryFunction);
LogExpectedQueryResult(outputDTO);
}
