public async Task <PaymentRequestResult> InitiatePartnerPaymentAsync(IPaymentRequest paymentRequest)
{
#region Validation
if (string.IsNullOrEmpty(paymentRequest.CustomerId))
{
throw new ArgumentNullException(nameof(paymentRequest.CustomerId));
}
if (string.IsNullOrEmpty(paymentRequest.PartnerId))
{
throw new ArgumentNullException(nameof(paymentRequest.PartnerId));
}
if (string.IsNullOrEmpty(paymentRequest.Currency))
{
throw new ArgumentNullException(nameof(paymentRequest.Currency));
}
var isPartnerIdValidGuid = Guid.TryParse(paymentRequest.PartnerId, out var partnerId);
if (!isPartnerIdValidGuid)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.PartnerIdIsNotAValidGuid));
}
var isCustomerIdValidGuid = Guid.TryParse(paymentRequest.CustomerId, out var customerGuid);
if (!isCustomerIdValidGuid)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.CustomerIdIsNotAValidGuid));
}
//We can have either amount in Tokens or in Fiat
if (paymentRequest.FiatAmount != null && paymentRequest.TokensAmount != null)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.CannotPassBothFiatAndTokensAmount));
}
//Fiat or Tokens Amount must be provided
if (paymentRequest.FiatAmount == null && paymentRequest.TokensAmount == null)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.EitherFiatOrTokensAmountShouldBePassed));
}
if (paymentRequest.TokensAmount != null && paymentRequest.TokensAmount <= 0)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.InvalidTokensAmount));
}
if (paymentRequest.FiatAmount != null && paymentRequest.FiatAmount <= 0)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.InvalidFiatAmount));
}
if (paymentRequest.TotalBillAmount <= 0)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.InvalidTotalBillAmount));
}
var customerProfile = await _customerProfileClient.CustomerProfiles.GetByCustomerIdAsync(paymentRequest.CustomerId);
if (customerProfile.ErrorCode == CustomerProfileErrorCodes.CustomerProfileDoesNotExist)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.CustomerDoesNotExist));
}
var customerWalletStatus =
await _walletManagementClient.Api.GetCustomerWalletBlockStateAsync(paymentRequest.CustomerId);
if (customerWalletStatus.Status == CustomerWalletActivityStatus.Blocked)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.CustomerWalletBlocked));
}
var partnerDetails = await _partnerManagementClient.Partners.GetByIdAsync(partnerId);
if (partnerDetails == null)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.PartnerDoesNotExist));
}
if (!string.IsNullOrEmpty(paymentRequest.LocationId))
{
if (partnerDetails.Locations.All(x => x.Id.ToString() != paymentRequest.LocationId))
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.NoSuchLocationForThisPartner));
}
}
#endregion
var paymentRequestId = Guid.NewGuid().ToString();
paymentRequest.PaymentRequestId = paymentRequestId;
//Blockchain does not accept null
if (paymentRequest.LocationId == null)
{
paymentRequest.LocationId = "";
}
var convertOptimalByPartnerModel = new ConvertOptimalByPartnerRequest
{
CustomerId = customerGuid,
PartnerId = partnerId,
Amount = paymentRequest.TokensAmount ?? paymentRequest.FiatAmount.Value,
FromCurrency = paymentRequest.TokensAmount.HasValue ? _tokenSymbol : paymentRequest.Currency,
ToCurrency = paymentRequest.TokensAmount.HasValue ? paymentRequest.Currency : _tokenSymbol
};
var convertOptimalByPartnerResponse =
await _eligibilityEngineClient.ConversionRate.ConvertOptimalByPartnerAsync(convertOptimalByPartnerModel);
if (convertOptimalByPartnerResponse.ErrorCode != EligibilityEngineErrors.None)
{
if (convertOptimalByPartnerResponse.ErrorCode == EligibilityEngineErrors.PartnerNotFound)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.PartnerDoesNotExist));
}
if (convertOptimalByPartnerResponse.ErrorCode == EligibilityEngineErrors.ConversionRateNotFound)
{
return(PaymentRequestResult.Failed(PaymentRequestErrorCodes.InvalidTokensOrCurrencyRateInPartner));
}
}
paymentRequest.TokensToFiatConversionRate = convertOptimalByPartnerResponse.UsedRate;
if (paymentRequest.FiatAmount == null)
{
paymentRequest.FiatAmount = (decimal)convertOptimalByPartnerResponse.Amount;
}
else
{
paymentRequest.TokensAmount = convertOptimalByPartnerResponse.Amount;
}
var now = DateTime.UtcNow;
paymentRequest.CustomerActionExpirationTimestamp = paymentRequest.CustomerExpirationInSeconds.HasValue
? now.AddSeconds(paymentRequest.CustomerExpirationInSeconds.Value)
: now.Add(_settingsService.GetRequestsExpirationPeriod());
await _paymentsRepository.AddAsync(paymentRequest);
await _paymentRequestCreatedPublisher.PublishAsync(new PartnerPaymentRequestCreatedEvent
{
PaymentRequestId = paymentRequestId,
CustomerId = paymentRequest.CustomerId,
PartnerId = paymentRequest.PartnerId,
Timestamp = DateTime.UtcNow
});
return(PaymentRequestResult.Succeeded(PaymentRequestStatus.Created, paymentRequestId));
}
