public async Task <CurrencyConverterDto> ConvertCurrency(CurrencyToExchange toExchange)
{
if (toExchange.Amount < 0)
{
throw new Exception("Amount to convert cannot be less than 0.");
}
if (toExchange.ToCurrency == "pln")
{
throw new Exception($"Currently convert to {toExchange.ToCurrency} is not supported.");
}
var baseCurrencyRequest = new RestRequest($"rates/a/{toExchange.FromCurrency}",
Method.GET, DataFormat.Json);
var toCurrencyRequest = new RestRequest($"rates/a/{toExchange.ToCurrency}",
Method.GET, DataFormat.Json);
var baseCurrencyResponse = await _client
.ExecuteTaskAsync <CurrencyTable>(baseCurrencyRequest);
var toCurrencyResponse = await _client
.ExecuteTaskAsync <CurrencyTable>(toCurrencyRequest);
await _repository.AddAsync(baseCurrencyResponse.Data);
await _repository.AddAsync(toCurrencyResponse.Data);
var currentDayConvertToPrice = toCurrencyResponse.Data.Rates.Select(x => x.Mid).Single();
if (toExchange.FromCurrency != "pln" && toExchange.ToCurrency != "pln")
{
var currentDayUnitPrice = baseCurrencyResponse.Data.Rates.Select(x => x.Mid).Single();
var pricePerUnit = currentDayUnitPrice / currentDayConvertToPrice;
var amountValue = currentDayUnitPrice * toExchange.Amount;
var convertedValue = amountValue / currentDayConvertToPrice;
var finalResponse = new CurrencyConvert()
{
FromCurrency = toExchange.FromCurrency,
ToCurrency = toExchange.ToCurrency,
PricePerUnit = Math.Round(pricePerUnit, 2),
BaseCurrencyValue = toExchange.Amount,
ConvertedCurrencyValue = Math.Round(convertedValue, 2)
};
await _currencyRepository.AddAsync(finalResponse);
return(_mapper.Map <CurrencyConverterDto>(finalResponse));
}
var responseFromPlnExchange = new CurrencyConvert()
{
FromCurrency = toExchange.FromCurrency,
ToCurrency = toExchange.ToCurrency,
PricePerUnit = currentDayConvertToPrice,
BaseCurrencyValue = toExchange.Amount,
ConvertedCurrencyValue = toExchange.Amount * currentDayConvertToPrice
};
await _currencyRepository.AddAsync(responseFromPlnExchange);
return(_mapper.Map <CurrencyConverterDto>(responseFromPlnExchange));
}
public async Task <IActionResult> ConvertCurrency(CurrencyToExchange toExchange)
{
var data = await _converterService.ConvertCurrency(toExchange);
return(Ok(data));
}