public async Task <Result <decimal> > GetFa12AllowanceAsync(
string holderAddress,
string spenderAddress,
string callingAddress,
SecureBytes securePublicKey,
CancellationToken cancellationToken = default)
{
var tokenConfig = _currency as Fa12Config;
try
{
var rpc = new Rpc(_rpcNodeUri);
var tx = new TezosTransaction
{
Currency = tokenConfig.Name,
From = callingAddress,
To = tokenConfig.TokenContractAddress,
Fee = 0, //token.GetAllowanceFee,
GasLimit = tokenConfig.GetAllowanceGasLimit,
StorageLimit = 0, //token.GetAllowanceStorageLimit,
Params = CreateGetAllowanceParams(holderAddress, spenderAddress, tokenConfig.ViewContractAddress),
UseRun = false,
UseOfflineCounter = false
};
_ = await tx
.FillOperationsAsync(
securePublicKey : securePublicKey,
tezosConfig : tokenConfig,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
var runResults = await rpc
.RunOperations(tx.Head, tx.Operations)
.ConfigureAwait(false);
return(runResults
?["contents"]
?.LastOrDefault()
?["metadata"]
?["internal_operation_results"]
?[0]
?["result"]
?["errors"]
?[1]
?["with"]
?["args"]
?[0]
?["args"]
?[0]
?["int"]
?.Value <decimal>() ?? 0);
}
catch (Exception e)
{
return(new Error(Errors.RequestError, e.Message));
}
}
public async Task <Result <decimal> > GetTokenAllowanceAsync(
string holderAddress,
string spenderAddress,
string callingAddress,
SecureBytes securePublicKey,
CancellationToken cancellationToken = default)
{
var token = _currency as TezosTokens.FA12;
try
{
var rpc = new Rpc(_rpcNodeUri);
var head = await rpc
.GetHeader()
.ConfigureAwait(false);
var tx = new TezosTransaction
{
Currency = token,
From = callingAddress,
To = token.TokenContractAddress,
Fee = 0, //token.GetAllowanceFee,
GasLimit = token.GetAllowanceGasLimit,
StorageLimit = 0, //token.GetAllowanceStorageLimit,
Params = GetAllowanceParams(holderAddress, spenderAddress, token.ViewContractAddress),
};
await tx.FillOperationsAsync(
head : head,
securePublicKey : securePublicKey,
incrementCounter : false,
cancellationToken : cancellationToken)
.ConfigureAwait(false);
var runResults = await rpc
.RunOperations(head, tx.Operations)
.ConfigureAwait(false);
Log.Debug("getTokenAllowance result {@result}", runResults);
return(runResults?["contents"]?.LastOrDefault()?["metadata"]?["internal_operation_results"]?[0]?["result"]?["errors"]?[1]?["with"]?["args"]?[0]?["args"]?[0]?["int"]?.Value <decimal>());
}
catch (Exception e)
{
return(new Error(Errors.RequestError, e.Message));
}
}