public async Task <IActionResult> BuildSingle([FromBody] BuildSingleTransactionRequest request)
{
if (request == null)
{
return(BadRequest(ErrorResponse.Create("Unable to deserialize request")));
}
if (!new [] { Constants.Assets.Neo.AssetId, Constants.Assets.Gas.AssetId }.Contains(request.AssetId))
{
return(BadRequest(ErrorResponse.Create("Invalid assetId")));
}
var amount = MoneyConversionHelper.FromContract(request.Amount, request.AssetId);
if (amount <= 0)
{
return(BadRequest(ErrorResponse.Create($"Amount can't be less or equal to zero: {amount}")));
}
if (request.AssetId == Constants.Assets.Neo.AssetId && amount % 1 != 0)
{
return(BadRequest($"The minimum unit of NEO is 1 and tokens cannot be subdivided.: {amount}"));
}
var toAddressValid = _addressValidator.IsAddressValid(request.ToAddress);
if (!toAddressValid)
{
return(BadRequest(ErrorResponse.Create("Invalid toAddress")));
}
var fromAddressValid = _addressValidator.IsAddressValid(request.FromAddress);
if (!fromAddressValid)
{
return(BadRequest(ErrorResponse.Create("Invalid fromAddress")));
}
if (!ModelState.IsValidOperationId(request.OperationId))
{
return(BadRequest(ErrorResponseFactory.Create(ModelState)));
}
if ((await _operationRepository.GetOrDefault(request.OperationId))?.IsBroadcasted ?? false)
{
return(Conflict());
}
Transaction tx;
decimal fee = 0;
switch (request.AssetId)
{
case Constants.Assets.Neo.AssetId:
(tx, fee) = await _transactionBuilder.BuildNeoContractTransactionAsync(request.FromAddress,
request.ToAddress,
amount,
request.IncludeFee);
break;
case Constants.Assets.Gas.AssetId:
tx = await _transactionBuilder.BuildGasTransactionAsync(request.FromAddress,
request.ToAddress,
amount);
break;
default:
throw new ArgumentException("Unknown switch", nameof(request.AssetId));
}
await _operationRepository.GetOrInsert(request.OperationId,
() => OperationAggregate.StartNew(request.OperationId,
fromAddress: request.FromAddress,
toAddress: request.ToAddress,
amount: amount,
assetId: request.AssetId,
fee: fee,
includeFee: request.IncludeFee));
return(Ok(new BuildTransactionResponse
{
TransactionContext = TransactionSerializer.Serialize(tx, TransactionType.ContractTransaction)
}));
}