public async Task <List <BalancePrimaryCurrencyModel> > GetUserPrimaryCurrencyBalancesAsync(Guid userId)
{
UserCurrency userCurrency = await _userCurrencyRepository.GetPrimaryCurrencyAsync(userId);
IEnumerable <Balance> balances = await _balanceRepository.GetLatestBalancesAsync(userId);
List <BalancePrimaryCurrencyModel> result = new List <BalancePrimaryCurrencyModel>();
if (balances.Count() == 0)
{
return(result);
}
DateTime effectiveDate = balances.First().EffectiveDate;
List <ExchangeRateModel> exchangeRates = await _exchangeRateService.GetExchangeRatesAsync(userId, effectiveDate);
foreach (Balance balance in balances)
{
ExchangeRateModel rate = exchangeRates.First(r =>
r.BaseCurrency.Equals(balance.Asset.Balance.Currency, StringComparison.OrdinalIgnoreCase) &&
r.CounterCurrency.Equals(userCurrency.Currency, StringComparison.OrdinalIgnoreCase));
result.Add(new BalancePrimaryCurrencyModel(userCurrency.Currency, balance, rate));
}
return(result);
}
public async Task <BalanceTotalModel> CalculateAsync(
Guid userId,
IEnumerable <Balance> balances,
string currency,
string primaryCurrency,
DateTime effectiveDate)
{
decimal total = 0.0M;
List <ExchangeRateModel> rates = await _exchangeRateService.GetExchangeRatesAsync(userId, effectiveDate);
var groups = balances.GroupBy(b => b.Asset.Balance.Currency);
foreach (IGrouping <string, Balance> g in groups)
{
decimal currencyTotal = g.Sum(b => b.Value);
if (string.Equals(currency, g.Key, StringComparison.OrdinalIgnoreCase))
{
total += currencyTotal;
}
else
{
decimal primaryCurrencyValue = BuyPrimaryCurrency(rates, g.Key, primaryCurrency, currencyTotal);
decimal currencyValue = SellPrimaryCurrency(rates, currency, primaryCurrency, primaryCurrencyValue);
total += currencyValue;
}
}
return(new BalanceTotalModel(effectiveDate, currency, total));
}
public async Task <CurrencyResponse> ConvertAsync(CurrencyRequest currencyRequest)
{
if (currencyRequest == null || string.IsNullOrEmpty(currencyRequest.SourceCurrency) ||
string.IsNullOrEmpty(currencyRequest.TargetCurrency))
{
return(null);
}
currencyRequest.SourceCurrency = currencyRequest.SourceCurrency.ToUpper();
currencyRequest.TargetCurrency = currencyRequest.TargetCurrency.ToUpper();
if (CheckIfCurrenciesAreSupported(currencyRequest))
{
return(null);
}
var response = await _exchangeRateService.GetExchangeRatesAsync(currencyRequest.SourceCurrency);
if (response == null)
{
return(null);
}
var targetRate = response.Rates[currencyRequest.TargetCurrency];
var convertedAmount = currencyRequest.Amount * Math.Round(targetRate, 2);
return(new CurrencyResponse
{
ConvertedAmount = convertedAmount,
TargetCurrency = currencyRequest.TargetCurrency
});
}
public async Task <IList <CurrencyReturnDTO> > GetCurrenciesAsync()
{
var exchanges = await _exchangeRateService.GetExchangeRatesAsync();
var currencies =
(await _currenciesRepository.GetAllAsync()).Select(currency =>
currency.ToCurrencyReturnDTO(exchanges.CurrencyRates
.FirstOrDefault(rate => rate.Currency == currency).Rate));
return(await currencies.ToArrayAsync());
}
public async Task<IActionResult> GetExchangeRates()
{
try
{
var exchangeRates = await _exchangeRateService.GetExchangeRatesAsync(new List<string>() { "USD", "JMD" });
return Ok(exchangeRates);
}
catch (Exception ex)
{
return BadRequest(ex.Message);
}
}
public async Task <ActionResult <List <ExchangeRateModel> > > GetExchangeRates(DateTime effectiveDate)
{
UserViewModel user = await GetCurrentUserAsync();
if (user == null)
{
return(HandleUserNotFoundResult());
}
List <ExchangeRateModel> result = await _exchangeRateService.GetExchangeRatesAsync(user.Id, effectiveDate);
return(result);
}
public async Task <IActionResult> GetExhangeRates()
{
try
{
var exchangeRates = await _exchangeRateService.GetExchangeRatesAsync();
return(Ok(exchangeRates));
}
catch (Exception ex)
{
_logger.LogCritical(ex.Message);
return(BadRequest(new ErrorViewModel {
Error = ErrorCode.ServerError, ErrorDescription = ex.Message
}));
}
}