private scpQueryRequest CreateCapitaQueryRequest(
            int customerSiteId,
            int customerScpId,
            int hmacKeyId,
            string secretKey,
            string scpUniqueReference,
            string callingApplicationTransactionReference)
        {
            scpQueryRequest queryRequest = new scpQueryRequest
            {
                siteId       = customerSiteId,
                scpReference = scpUniqueReference,
                credentials  = new credentials
                {
                    subject = new subject()
                    {
                        subjectType = subjectType.CapitaPortal,
                        identifier  = customerScpId,
                        systemCode  = systemCode.SCP
                    },
                    requestIdentification = new requestIdentification()
                    {
                        uniqueReference = callingApplicationTransactionReference,
                        timeStamp       = DateTime.UtcNow.ToString("yyyyMMddhhmmss")
                    },
                    signature = new signature()
                    {
                        algorithm = algorithm.Original,
                        hmacKeyID = hmacKeyId
                    }
                }
            };



            string credentialsToHash = CapitaApiHelpers.GetCredentialsToHash(queryRequest.credentials);

            queryRequest.credentials.signature.digest = CapitaApiHelpers.CalculateDigest(secretKey, credentialsToHash);


            return(queryRequest);
        }
        protected async Task <PaymentAuthorizationResponse> CheckAuthorizationInternal(
            PaymentProviderConfiguration configuration,
            string uniqueIdentifier, string scpUniqueReference)
        {
            int    siteId;
            int    scpId;
            int    hmacKeyId;
            string hmacSecretKey;

            int.TryParse(configuration.AccountIdentifer, out siteId);
            int.TryParse(configuration.SubAccountNumber, out scpId);

            CapitaApiHelpers.GetHmacIdAndSecretKey(configuration.SharedSecret, out hmacKeyId, out hmacSecretKey);

            scpQueryRequest         request = CreateCapitaQueryRequest(siteId, scpId, hmacKeyId, hmacSecretKey, scpUniqueReference, uniqueIdentifier);
            scpSimpleQueryResponse1 response;

            try
            {
                using (CapitaSimple.scpClient capitaClient = new scpClient("CapitaScpSoap", Shared.Capita.Default.CapitaWebServiceUrl))
                {
                    try
                    {
                        response = await capitaClient.scpSimpleQueryAsync(request);
                    }
                    catch (Exception ex)
                    {
                        this.Logger.CreateEntry(typeof(CapitaApiProvider), LogLevel.Error, $"Token:{uniqueIdentifier},ProviderToken:{scpUniqueReference}", ex);
                        return(new PaymentAuthorizationResponse(false, PaymentAuthorizationResult.ErrorUnknownStatus, 0, "Error occurred: Provider returned an error in response", null));
                    }
                }
            }
            //This is a quick fix to cover the scenario where we're calling from AzureFunction and AzureFunction does not have any app.config
            //So we need to build the bindings and endpoint in the code
            catch (InvalidOperationException invalidOperationException)
            {
                // Create endpoint address gathered from functions app settings
                var address = new EndpointAddress(Shared.Capita.Default.CapitaWebServiceUrl);

                // Create binding to match the client proxy configuration
                var binding = new BasicHttpBinding(BasicHttpSecurityMode.Transport);
                binding.Security.Mode = BasicHttpSecurityMode.Transport;

                using (CapitaSimple.scpClient capitaClient = new scpClient(binding, address))
                {
                    try
                    {
                        response = await capitaClient.scpSimpleQueryAsync(request);
                    }
                    catch (Exception ex)
                    {
                        this.Logger.CreateEntry(typeof(CapitaApiProvider), LogLevel.Error, $"Token:{uniqueIdentifier},ProviderToken:{scpUniqueReference}", ex);
                        return(new PaymentAuthorizationResponse(false, PaymentAuthorizationResult.ErrorUnknownStatus, 0, "Error occurred: Provider returned an error in response", null));
                    }
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }



            return(ParseResponseFromCapitaResponse(response));
        }