public async Task <IEnumerable <CurrencyRateViewModel> > ImportRatesAsync(int CurrencyId, DateTime fromDate, DateTime toDate)
{
var result = new List <Task <CurrencyRate> >();
var currency = currRepository.FindById(CurrencyId);
var dates = (toDate - fromDate).TotalDays;
for (var i = 0; i < dates; i++)
{
var date = fromDate.AddDays(i);
var rate = bankService.LoadRate(currency.Id, currency.ShortCode, date);
result.Add(rate);
}
var rates = await Task.WhenAll(result);
try
{
unitOfWork.BeginTransaction();
currRateRepository.AddRange(rates);
unitOfWork.Commit();
}
catch (Exception)
{
unitOfWork.Rollback();
throw;
}
return(rates.Select(p => CurrencyRateViewModel.MapFromData(p)));
}
public IEnumerable <CurrencyRateViewModel> GetRatesByCurrency(int code)
{
var spec = new RateByCurrencySpec(code);
var rates = currRateRepository.FindOrdered(spec, x => x.Date, true, 0, 10, x => x.Currency)
.Select(p => CurrencyRateViewModel.MapFromData(p)).ToList();
return(rates ?? new List <CurrencyRateViewModel>());
}
public CurrencyRateViewModel GetRateByCurrencyAndDateAsync(int code, DateTime date)
{
var spec = new RateByCurrencyAndDateSpec(code, date);
var rate = currRateRepository.FindOrdered(spec, x => x.Date, true)
.Select(p => CurrencyRateViewModel.MapFromData(p))
.FirstOrDefault();
if (rate == null)
{
throw new KeyNotFoundException("Rate not found");
}
return(rate);
}
public void AddRate(CurrencyRateViewModel rate)
{
var currency = currRepository.FindById(rate.CurrencyId);
if (currency == null)
{
throw new ValidationException($"Currency {rate.CurrencyId} not found.");
}
var currRate = CurrencyRate.CreateRate(rate.CurrencyId, rate.Date, rate.Koef, rate.Rate);
try
{
unitOfWork.BeginTransaction();
currRateRepository.Add(currRate);
unitOfWork.Commit();
}
catch (Exception)
{
unitOfWork.Rollback();
throw;
}
}
