public static void Calc(Course request)
{
var result = new CourseResult();
var fund = request.Amount;
var periods = request.StopAtPeriod.HasValue ? request.StopAtPeriod : request.Period;
var forecast1 = ForecastUtil.Get(ForecastType.VariablePriceIndex);
var forecast2 = ForecastUtil.Get(ForecastType.PriceIndex);
var zeroInterest = forecast1.GetValue();
for (int i = 0; i < periods; i++)
{
var priceIndex =
request.WithForecast ?
forecast2.GetValue(request.StartMonth + i) / 12 :
forecast2.GetValue(1) / 12;
var baseInterest =
request.WithForecast ?
forecast1.GetValue(request.StartMonth + i) - zeroInterest :
0;
var rate = (request.Interest + baseInterest) / 12;
var pmt = -Utils.Pmt(rate / 100, request.Period - i, fund);
var interestPayment = fund * rate / 100;
var fundPayment = pmt - interestPayment;
var fundPaymentWithPriceIndex = fundPayment * Math.Pow(1 + (priceIndex / 100), i + 1);
var payment = new Payment
{
Period = i + 1,
InterestMonthPercentage = Utils.Round4(rate),
InterestYearPercentage = Utils.Round4(rate * 12),
PriceIndex = Utils.Round4(priceIndex),
PriceIndexPayment = Utils.Round2(fundPayment * (Math.Pow(1 + (priceIndex / 100), i + 1) - 1)),
InterestPayment = Utils.Round2(interestPayment),
TotalFund = Utils.Round2(fund),
TotalFundWithPriceIndex = Utils.Round2(fund * (1 + (priceIndex / 100))),
FundPayment = Utils.Round2(fundPayment),
FundPaymentWithPriceIndex = Utils.Round2(fundPaymentWithPriceIndex),
TotalPayment = Utils.Round2(fundPaymentWithPriceIndex + interestPayment),
};
result.Payments.Add(payment);
fund = fund - payment.FundPayment;
}
request.Result = result;
}
public static void Calc(Course request)
{
var result = new CourseResult();
var fund = request.Amount;
var forecast = ForecastUtil.Get(ForecastType.Prime);
request.StopAtPeriod = request.Recycle == null ? (int?)null : request.Recycle.FromMonth - 1;
var periods = request.StopAtPeriod.HasValue ? request.StopAtPeriod : request.Period;
var boiInterest = forecast.GetValue();
for (int i = 0; i < periods; i++)
{
var baseInterest = request.WithForecast ?
forecast.GetValue(request.StartMonth + i) - boiInterest :
0;
var rate = (baseInterest + request.Interest) / 12;
var pmt = -Utils.Pmt(rate / 100, request.Period - i, fund);
var interest = fund * rate / 100;
var payment = new Payment
{
Period = i + request.StartMonth,
InterestMonthPercentage = Utils.Round4(rate),
InterestYearPercentage = Utils.Round4(rate * 12),
TotalPayment = Utils.Round2(pmt),
FundPayment = Utils.Round2(pmt - interest),
InterestPayment = Utils.Round2(interest),
TotalFund = Utils.Round2(fund),
};
payment.TotalFundWithPriceIndex = payment.TotalFund;
payment.FundPaymentWithPriceIndex = payment.FundPayment;
result.Payments.Add(payment);
fund = fund - payment.FundPayment;
}
request.Result = result;
if (request.Recycle != null)
{
Recycle(request);
}
}