public async Task <OperationEstimationResult> EstimateCashoutGas(Guid id, string coinAdapterAddress, string fromAddress, string toAddress, BigInteger amount, string sign)
{
var blackListedAddress = await _blackListAddressesRepository.GetAsync(toAddress);
var whiteListedAddress = await _whiteListAddressesRepository.GetAsync(toAddress);
if (blackListedAddress != null && whiteListedAddress == null)
{
return(new OperationEstimationResult()
{
GasAmount = Constants.GasForCoinTransaction,
IsAllowed = false
});
}
//It is ok.
if (ChaosKitty.MeowButLogically())
{
return(new OperationEstimationResult()
{
GasAmount = 50000,
IsAllowed = true
});
}
var coinAFromDb = await GetCoinWithCheck(coinAdapterAddress);
if (string.IsNullOrEmpty(sign))
{
sign = await GetSign(id, coinAdapterAddress, fromAddress, toAddress, amount);
}
ThrowOnWrongSignature(id, coinAdapterAddress, fromAddress, toAddress, amount, sign);
var contract = _web3.Eth.GetContract(_settings.MainExchangeContract.Abi, _settings.MainExchangeContract.Address);
var cashout = contract.GetFunction("cashout");
var convertedId = EthUtils.GuidToBigInteger(id);
//ACTION
var estimatedGasForOperation = await cashout.EstimateGasAsync(_settings.EthereumMainAccount,
new HexBigInteger(Constants.GasForCoinTransaction), new HexBigInteger(0),
convertedId,
_addressUtil.ConvertToChecksumAddress(coinAFromDb.AdapterAddress),
fromAddress,
toAddress,
amount,
sign.HexToByteArray(),
new byte[0]);
return(new OperationEstimationResult()
{
GasAmount = estimatedGasForOperation.Value,
IsAllowed = estimatedGasForOperation.Value < Constants.GasForCoinTransaction
});
}
