internal static string GetAddressSignature(string privateKey, ECurrency currency, Environment environment)
{
if (string.IsNullOrWhiteSpace(privateKey))
{
throw new ArgumentNullException(nameof(privateKey));
}
string timestamp = DateTimeOffset.UtcNow.ToUnixTimeSeconds().ToString();
string signature = null;
if (currency == ECurrency.BTC)
{
BitcoinSecret secret = new BitcoinSecret(privateKey, environment.Network);
signature = secret.PrivateKey.SignMessage(timestamp);
}
else if (currency.IsGluwaCoinCurrency())
{
var signer = new EthereumMessageSigner();
signature = signer.EncodeUTF8AndSign(timestamp, new EthECKey(privateKey));
}
else
{
throw new ArgumentOutOfRangeException($"Unsupported currency: {currency}");
}
string signatureToEncode = $"{timestamp}.{signature}";
byte[] signatureByte = Encoding.UTF8.GetBytes(signatureToEncode);
string encodedData = Convert.ToBase64String(signatureByte);
return(encodedData);
}
/// <summary>
/// Accept quote received from POST /v1/Quote endpoint.
/// </summary>
/// <param name="currency">The source currency of the quote.</param>
/// <param name="address">The sending address of the quote.</param>
/// <param name="privateKey">The privateKey of the sending address.</param>
/// <param name="quoteRequest">Request body.</param>
/// <response code="202">Quote is accepted.</response>
/// <response code="400_InvalidUrlParameters">Invalid URL parameters.</response>
/// <response code="400_MissingBody">Request body is missing.</response>
/// <response code="400_InvalidBody">Request validation errors. See InnerErrors.</response>
/// <response code="400_ValidationError">Request validation errors. See InnerErrors.</response>
/// <response code="403">Invalid checksum. Checksum may be wrong or expired.</response>
/// <response code="404">One of the matched orders are no longer available.</response>
/// <response code="500">Server error.</response>
/// <returns></returns>
public async Task <Result <AcceptQuoteResponse, ErrorResponse> > AcceptQuoteAsync(
ECurrency currency,
string address,
string privateKey,
AcceptQuoteRequest quoteRequest)
{
#region
if (!currency.IsGluwaExchangeCurrency())
{
throw new ArgumentOutOfRangeException($"Unsupported currency: {currency}");
}
foreach (var order in quoteRequest.MatchedOrders)
{
IEnumerable <ValidationResult> validation = quoteRequest.Validate(currency);
if (validation.Any())
{
foreach (var item in validation)
{
throw new ArgumentNullException(item.ErrorMessage);
}
}
}
if (string.IsNullOrWhiteSpace(address))
{
throw new ArgumentNullException(nameof(address));
}
else if (string.IsNullOrWhiteSpace(privateKey))
{
throw new ArgumentNullException(nameof(privateKey));
}
#endregion
var result = new Result <AcceptQuoteResponse, ErrorResponse>();
string requestUri = $"{mEnv.BaseUrl}/v1/Quote";
List <MatchedOrderRequest> matchedOrders = new List <MatchedOrderRequest>();
foreach (var matchedOrder in quoteRequest.MatchedOrders)
{
if (currency.IsGluwaCoinCurrency())
{
BigInteger nonce = BigInteger.Parse(GluwaService.GetNonceString());
BigInteger convertExpiryBlockNumber = BigInteger.Parse(matchedOrder.ExpiryBlockNumber);
string signature = getGluwacoinReserveTxnSignature(
currency,
address,
matchedOrder.SourceAmount,
matchedOrder.Fee,
matchedOrder.DestinationAddress,
matchedOrder.Executor,
nonce,
convertExpiryBlockNumber,
privateKey);
MatchedOrderRequest matchedOrderRequest = new MatchedOrderRequest()
{
OrderID = matchedOrder.OrderID,
ReserveTxnSignature = signature,
Nonce = nonce.ToString()
};
matchedOrders.Add(matchedOrderRequest);
}
else
{
BtcTxnSignature txnSignature = await getBtcTxnSignaturesAsync(
currency,
address,
matchedOrder.SourceAmount,
matchedOrder.Fee,
matchedOrder.DestinationAddress,
matchedOrder.ReservedFundsAddress,
matchedOrder.ReservedFundsRedeemScript,
privateKey);
MatchedOrderRequest matchedOrderRequest = new MatchedOrderRequest()
{
OrderID = matchedOrder.OrderID,
ReserveTxnSignature = txnSignature.ReserveTxnSignature,
ExecuteTxnSignature = txnSignature.ExecuteTxnSignature,
ReclaimTxnSignature = txnSignature.ReclaimTxnSignature
};
matchedOrders.Add(matchedOrderRequest);
}
}
PutQuoteRequest bodyParams = new PutQuoteRequest()
{
MatchedOrders = matchedOrders,
Checksum = quoteRequest.Checksum
};
string json = bodyParams.ToJson();
StringContent content = new StringContent(json, Encoding.UTF8, "application/json");
try
{
using (HttpClient httpClient = new HttpClient())
using (HttpResponseMessage response = await httpClient.PutAsync(requestUri, content))
{
if (response.IsSuccessStatusCode)
{
AcceptQuoteResponse quoteResponse = await response.Content.ReadAsAsync <AcceptQuoteResponse>();
result.IsSuccess = true;
result.Data = quoteResponse;
return(result);
}
string contentString = await response.Content.ReadAsStringAsync();
result.Error = ResponseHandler.GetError(response.StatusCode, requestUri, contentString);
}
}
catch (HttpRequestException)
{
result.IsSuccess = false;
result.Error = ResponseHandler.GetExceptionError();
}
return(result);
}