public async Task <IActionResult> BuildSingle([Required, FromBody] BuildSingleTransactionRequest request)
{
if (!ModelState.IsValid)
{
return(BadRequest());
}
string xdrBase64;
var build = await _transactionService.GetTxBuildAsync(request.OperationId);
if (build != null)
{
xdrBase64 = build.XdrBase64;
}
else
{
if (!_balanceService.IsAddressValid(request.FromAddress))
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.FromAddress)} is not a valid")));
}
if (!_balanceService.IsAddressValid(request.ToAddress))
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.ToAddress)} is not a valid")));
}
if (request.AssetId != Asset.Stellar.Id)
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.AssetId)} was not found")));
}
Int64 amount;
try
{
amount = Int64.Parse(request.Amount);
}
catch (FormatException)
{
// too small (e.g. 0.1)
return(BadRequest(StellarErrorResponse.Create($"Amount is too small. min=1, amount={request.Amount}", BlockchainErrorCode.AmountIsTooSmall)));
}
var fees = await _transactionService.GetFeesAsync();
var fromAddressBalance = await _balanceService.GetAddressBalanceAsync(request.FromAddress, fees);
Int64 requiredBalance;
if (request.IncludeFee)
{
requiredBalance = amount;
amount -= fees.BaseFee;
}
else
{
requiredBalance = amount + fees.BaseFee;
};
var availableBalance = fromAddressBalance?.Balance ?? 0;
if (requiredBalance > availableBalance)
{
return(BadRequest(StellarErrorResponse.Create($"Not enough balance to create transaction. required={requiredBalance}, available={availableBalance}"
, BlockchainErrorCode.NotEnoughtBalance)));
}
xdrBase64 = await _transactionService.BuildTransactionAsync(request.OperationId, fromAddressBalance, request.ToAddress, amount);
}
return(Ok(new BuildTransactionResponse
{
TransactionContext = xdrBase64
}));
}
public async Task <IActionResult> BuildSingle([Required, FromBody] BuildSingleTransactionRequest request)
{
if (request == null || request.OperationId.Equals(Guid.Empty))
{
return(BadRequest(ErrorResponse.Create("Invalid parameter").AddModelError(nameof(request.OperationId), "Must be valid guid")));
}
string xdrBase64;
var broadcast = await _transactionService.GetTxBroadcastAsync(request.OperationId);
if (broadcast != null)
{
return(new StatusCodeResult(StatusCodes.Status409Conflict));
}
var build = await _transactionService.GetTxBuildAsync(request.OperationId);
if (build != null)
{
xdrBase64 = build.XdrBase64;
}
else
{
string memo = null;
if (!_balanceService.IsAddressValid(request.FromAddress, out var fromAddressHasExtension))
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.FromAddress)} is not a valid")));
}
if (!_balanceService.IsAddressValid(request.ToAddress, out var toAddressHasExtension))
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.ToAddress)} is not a valid")));
}
if (fromAddressHasExtension)
{
if (!_balanceService.IsDepositBaseAddress(request.FromAddress))
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.FromAddress)} is not a valid. Public address extension allowed for deposit base address only!")));
}
if (!_balanceService.IsDepositBaseAddress(request.ToAddress) || toAddressHasExtension)
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.ToAddress)} is not a valid. Only deposit base address allowed as destination, when sending from address with public address extension!")));
}
memo = _balanceService.GetPublicAddressExtension(request.FromAddress);
}
var toBaseAddress = _balanceService.GetBaseAddress(request.ToAddress);
if (toAddressHasExtension)
{
memo = _balanceService.GetPublicAddressExtension(request.ToAddress);
}
if (request.AssetId != _blockchainAssetsService.GetNativeAsset().Id)
{
return(BadRequest(ErrorResponse.Create($"{nameof(request.AssetId)} was not found")));
}
long amount;
try
{
amount = long.Parse(request.Amount);
}
catch (FormatException)
{
// too small (e.g. 0.1)
return(BadRequest(StellarErrorResponse.Create($"Amount is too small. min=1, amount={request.Amount}", BlockchainErrorCode.AmountIsTooSmall)));
}
var fees = new Fees();
if (!fromAddressHasExtension)
{
fees = await _transactionService.GetFeesAsync();
}
var fromAddressBalance = await _balanceService.GetAddressBalanceAsync(request.FromAddress, fees);
long requiredBalance;
if (request.IncludeFee)
{
requiredBalance = amount;
amount -= fees.BaseFee;
}
else
{
requiredBalance = amount + fees.BaseFee;
}
var availableBalance = fromAddressBalance.Balance;
if (requiredBalance > availableBalance)
{
return(BadRequest(StellarErrorResponse.Create($"Not enough balance to create transaction. required={requiredBalance}, available={availableBalance}",
BlockchainErrorCode.NotEnoughBalance)));
}
xdrBase64 = await _transactionService.BuildTransactionAsync(request.OperationId, fromAddressBalance, toBaseAddress, memo, amount);
}
return(Ok(new BuildTransactionResponse
{
TransactionContext = xdrBase64
}));
}
