public async Task <ServiceResponse <CurrencyRateResponse> > CurrencyToRate(CurrencyEnum baseCurrency, CurrencyEnum versusCurrency)
{
CurrenciesContainer container = new CurrenciesContainer();
try
{
container = await GetCurrencies();
}
catch (HttpRequestException ex)
{
return(new ServiceResponse <CurrencyRateResponse> {
Success = false,
Message = @"A problem was found in an external HTTP request to
https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml, try again"
});
}
var data = new CurrencyRateResponse();
data.Base = baseCurrency.ToString();
data.Versus = versusCurrency.ToString();
data.Date = container.Date;
var currency1 = container.Currencies.FirstOrDefault(x => x.Name == baseCurrency.ToString());
var currency2 = container.Currencies.FirstOrDefault(x => x.Name == versusCurrency.ToString());
data.Rate = ConvertCurrency(1M, currency1, currency2);
return(new ServiceResponse <CurrencyRateResponse> {
Success = true,
Data = data
});
}
/// <summary>
/// Get currency rate for a given currency. It tries to read rate from memory for a day. If not found it reads currency from API
/// </summary>
/// <param name="currencyEnum">Input currency code</param>
/// <returns>Currency rate</returns>
public async Task <float> GetRate(CurrencyEnum currencyEnum)
{
var currency = currencyEnum.ToString();
var key = $"{DateTime.Today.ToShortDateString()}";
Dictionary <string, float> rates;
_memoryCache.TryGetValue(key, out rates);
if (rates == null)
{
var rateResponse = await _currencyService.GetRates();
_memoryCache.Set(key, rateResponse);
rates = rateResponse;
}
if (rates.ContainsKey(currency))
{
return(rates[currency]);
}
else
{
_logger.LogError($"Not able to get currency rate. Currency code {currency} not found");
throw new GalvException("Not able to get currency rate. Currency code not found");
}
}
public async Task <ServiceResponse <CurrencyRatesResponse> > CurrencyToRates(CurrencyEnum baseCurrency)
{
CurrenciesContainer container = new CurrenciesContainer();
try
{
container = await GetCurrencies();
}
catch (HttpRequestException ex)
{
return(new ServiceResponse <CurrencyRatesResponse> {
Success = false,
Message = @"A problem was found in an external HTTP request to
https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml, try again"
});
}
var data = new CurrencyRatesResponse();
data.Base = baseCurrency.ToString();
data.Date = container.Date;
var currency1 = container.Currencies.FirstOrDefault(x => x.Name == baseCurrency.ToString());
foreach (var item in Enum.GetValues(typeof(CurrencyEnum)))
{
var currency2 = container.Currencies.FirstOrDefault(x => x.Name == item.ToString() &&
x.Name != baseCurrency.ToString()
);
if (currency2 != null)
{
var convertResult = ConvertCurrency(1M, currency1, currency2);
data.Rates.Add(currency2.Name, convertResult);
}
}
return(new ServiceResponse <CurrencyRatesResponse> {
Success = true,
Data = data
});
}
public List <Transaction> GetByCurrency(CurrencyEnum currency)
{
return(_dbContext.Transactions.Where(t => t.Currency == currency.ToString()).ToList());
}
} //For EF
private Currencies(CurrencyEnum @enum)
{
this.Id = (int)@enum;
this.CurrencySign = @enum.ToString();
this.CurrencyFullName = @enum.GetEnumDescription();
}
private Currency(CurrencyEnum @enum)
{
ID = (int)@enum;
Name = @enum.ToString();
Description = @enum.GetEnumDescription();
}