public async Task <ImpactOfBaseRateChange> CalculateImpactOfBaseRateChange
(
long userId,
long agreementId,
BaseRateCodeEnum newBaseRate
)
{
var userRepo = this.uow.GetRepository <User>();
var user = await userRepo.GetAsync(
u => u.Id == userId && u.Agreements.Any(a => a.Id == agreementId),
u => u.Include(x => x.Agreements)
) ?? throw new EntityNotFoundException($"User with Id: {userId}, which has an agreement with Id: {agreementId}, was not found.");
var targetAgreement = user.Agreements.Single(a => a.Id == agreementId);
var baseRatesCodes = new List <BaseRateCodeEnum> {
targetAgreement.BaseRateCodeId, newBaseRate
};
var baseRateTasks = baseRatesCodes.Select(brc => this.baseRateService.GetBaseRate(brc));
var baseRates = await Task.WhenAll(baseRateTasks);
var currentInterestRate = targetAgreement.CalculateInterestRate(baseRates.First());
var newInterestRate = targetAgreement.CalculateInterestRate(baseRates.Last());
return(new ImpactOfBaseRateChange
{
User = user.ToDto(),
Agreement = targetAgreement.ToDto(),
CurrentInterestRate = currentInterestRate,
NewInterestRate = newInterestRate,
InterestRateDifference = Math.Abs(newInterestRate - currentInterestRate)
});
}
public async Task <ActionResult> CalculateBaseRateChangeImpact(
[FromRoute] long userId,
[FromRoute] long agreementId,
[FromQuery][Required] BaseRateCodeEnum newBaseRate
)
{
return(Ok(await this.interestRateService.CalculateImpactOfBaseRateChange(userId, agreementId, newBaseRate)));
}
public async Task <decimal> GetBaseRate(BaseRateCodeEnum baseRateCode)
{
var endpoint = $"http://www.lb.lt/webservices/VilibidVilibor/VilibidVilibor.asmx/getLatestVilibRate?RateType={baseRateCode.ToString()}";
var response = await this.httpClient.GetAsync(endpoint);
if (!response.IsSuccessStatusCode)
{
throw new IntegrationFailedException("Failed to retrieve the latest Vilib rate from www.lb.lt");
}
var content = await response.Content.ReadAsStringAsync();
XDocument xmlContent = XDocument.Parse(content);
var baseRateAsString = (xmlContent.FirstNode as XElement).Value;
var baseRate = decimal.Parse(baseRateAsString, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture);
return(baseRate);
}
