public async Task <EstimationDto> CreateEstimationAsync(string from, string to, decimal transferAmount, CancellationToken cxlToken)
{
if (!await _countryService.IsSupportedCountryAsync(from, to, cxlToken))
{
throw new ArgumentException("Country not supported");
}
TransactionAmount allowedAmount = await _paymentService.TransactionRangeAsync(from);
if (transferAmount < allowedAmount.MinAmount || transferAmount > allowedAmount.MaxAmount)
{
throw new ArgumentException($"Transfer amount must be between {allowedAmount.MinAmount} and {allowedAmount.MaxAmount}");
}
var fees = await _taxAndFeeService.GetFeeAsync(from, to, transferAmount, cxlToken);
var applicableRate = await _exchangeService.GetExchangeRateAsync(from, to, cxlToken);
var recieveAmount = Math.Round(applicableRate * transferAmount, Accuracy, MidpointRounding.AwayFromZero);
var applicablePaymentModes = await _paymentService.GetPaymentModesAsync(from);
var applicableTaxes = await _taxAndFeeService.GetTaxAsync(from, transferAmount, cxlToken);
var estimation = new EstimationDto
{
EstimationId = Guid.NewGuid().ToString(),
ExchangeRate = applicableRate,
AmountToSend = transferAmount,
AmountToRecieve = recieveAmount,
Fees = fees,
PaymentModes = applicablePaymentModes,
Taxes = applicableTaxes
};
await _estimationRepository.SaveEstimationAsync(estimation.EstimationId, EstimationDto.ToString(estimation));
return(estimation);
}
