public TransactionHashInfo Post([FromBody] TransactionModel request)
{
if (!ShouldSendCoins(request.RecipientAddress))
{
return(new TransactionHashInfo()
{
IsValid = false,
ErrorMessage = "User has received coins in the last hour."
});
}
if (request.Value > _appSettings.MaxAddressDonationPerHour)
{
return(new TransactionHashInfo()
{
IsValid = false,
ErrorMessage = String.Format("User cannot receive more than {0} coins per hour.", _appSettings.MaxAddressDonationPerHour)
});
}
var privateKey = CryptoUtils.HexToByteArray(_appSettings.PrivateKey);
var publicKey = CryptoUtils.GetPublicFor(privateKey);
var date = DateTime.UtcNow;
TransactionData dataToSign = GetDataToSign(request, publicKey, date);
var json = Newtonsoft.Json.JsonConvert.SerializeObject(dataToSign);
var msgHash = CryptoUtils.GetSha256Bytes(json);
var signedMessage = CryptoUtils.BouncyCastleSign(msgHash, privateKey);
// send http request to node
var signedTransactionData = new TransactionDataSigned
{
From = _appSettings.FaucetAddress,
To = request.RecipientAddress,
Value = request.Value,
Fee = 0,
SenderPubKey = CryptoUtils.ByteArrayToHex(publicKey),
DateCreated = date,
SenderSignature = CryptoUtils.ByteArrayToHex(signedMessage)
};
var res = HttpUtils.DoApiPost <TransactionDataSigned, TransactionHashInfo>(request.NodeUrl, "api/transactions", signedTransactionData);
if (res.IsValid)
{
// add transaction record with limits
var recordHistory = new TransactionHistory
{
Address = request.RecipientAddress,
DateReceived = res.DateReceived,
Amount = request.Value
};
_dbService.Add(request.RecipientAddress, recordHistory);
}
return(res);
}
private TransactionData GetDataToSign(TransactionModel request, byte[] publicKey, DateTime date)
{
return(new TransactionData
{
From = _appSettings.FaucetAddress,
To = request.RecipientAddress,
Value = request.Value,
Fee = 0,
SenderPubKey = CryptoUtils.ByteArrayToHex(publicKey),
DateCreated = date
});
}