public override double?[] GetUnits(int startFiscalYear, int months,
TimeInvariantInputDTO timeInvariantData, IReadOnlyList <TimeVariantInputDTO> timeVariantData)
{
// TODO: Pass this as a value measure
var answers = timeVariantData.FirstOrDefault();
double estimatedDesignLife = timeInvariantData.Design_32_Life;
CL.FormulaHelper.DTOs.TimePeriodDTO timePeriod = new CL.FormulaHelper.DTOs.TimePeriodDTO();
var endOfSpendMonthOffset = FormulaBase.FindEndOfSpendMonth(timeInvariantData.InvestmentSpendByAccountType);
if (!endOfSpendMonthOffset.HasValue)
{
return(null);
}
timePeriod.StartTime = FormulaBase.GetCalendarDateTime(startFiscalYear, fiscalPeriod: 1)
.AddMonths(endOfSpendMonthOffset.Value + 1); // + 1 because the benefit starts in the first month after end of spend.
TimeVariantLocalConditionDTO localTimeInvariantData =
new TimeVariantLocalConditionDTO(answers.Condition, timePeriod);
List <TimeVariantLocalConditionDTO> localTimeInvariantDataList
= new List <TimeVariantLocalConditionDTO>();
localTimeInvariantDataList.Add(localTimeInvariantData);
// A generic end of life condition decay curve, generated based on the design life entered by user.
XYCurveDTO conditionDecayCurve = HelperFunctions.GenericEndOfLifeModel.constructConditionDecayCurve(estimatedDesignLife);
return(InterpolateCurve <TimeVariantLocalConditionDTO>(localTimeInvariantDataList,
startFiscalYear,
months,
conditionDecayCurve,
x => x.ConditionScoreLocal));
}
public static double GetTotalCost(int months, DistributionByAccountTypeDTO capitalCosts)
{
var endOfSpendMonth = (FormulaBase.FindEndOfSpendMonth(months, capitalCosts) ?? 0) + 1;
var spendByMonth = FormulaBase.GetSpendForAccountType(months, capitalCosts, CustomerConstants.CAPEXAccount);
double totalInvestmentCost = 0;
if (spendByMonth == null)
{
return(0);
}
for (int i = 0; i < months; i++)
{
totalInvestmentCost += (spendByMonth[i] ?? 0);
}
return(totalInvestmentCost);
}