/// <summary>
/// For each deductible associated with this transaction we need to calculate how the latest transaction has affected the the current deductibles and generate any new deductibles as required
/// </summary>
/// <param name="productClaimDefinition">calim product</param>
/// <param name="financialContext">context variables</param>
/// <param name="deductibleDefinitions">deductibles associated with this transaction</param>
/// <param name="reserves">historical reserves</param>
/// <param name="payments">historical payments</param>
/// <param name="recoveryReserves">recovery reserves</param>
/// <returns>Deductible Result</returns>
private static DeductibleResult CalculateDeductibles(ProductClaimDefinition productClaimDefinition, FinancialTransactionContext financialContext, IEnumerable<DeductibleDefinition> deductibleDefinitions, IEnumerable<ClaimFinancialAmount> reserves, IEnumerable<ClaimFinancialAmount> payments, IEnumerable<ClaimFinancialAmount> recoveryReserves)
{
var deductibleResult = new DeductibleResult { Success = true };
var deductibleMovementTypes = deductibleDefinitions.SelectMany(a => a.GetMovementTypes());
var recoveryDeductibleMovementTypes = deductibleDefinitions.SelectMany(a => a.GetRecoveryMovementTypes());
var claimDetailRefs = financialContext.ClaimHeader.ClaimDetails.Select(a => a.ClaimDetailReference);
var deductibleReserveContext = new DeductibleReserveCapacity(claimDetailRefs, reserves, deductibleMovementTypes);
var deductibleRecoveryReserveContext = new DeductibleReserveCapacity(claimDetailRefs, recoveryReserves, recoveryDeductibleMovementTypes);
bool isRecovery = IsRecovery(financialContext.TransactionSource);
decimal sumOfLowerDeductibles = 0;
decimal totalPaid = payments.Where(a => !deductibleMovementTypes.Contains(a.MovementType)).Sum(a => a.TransactionAmountClaimCurrency.GetValueOrDefault());
decimal totalIncurred = CalculateTotalIncurred(productClaimDefinition, totalPaid, reserves.Where(a => !deductibleMovementTypes.Contains(a.MovementType)));
decimal totalRecoveryIncurred = totalIncurred + recoveryReserves.Where(a => !recoveryDeductibleMovementTypes.Contains(a.MovementType)).Sum(a => a.TransactionAmountClaimCurrency.GetValueOrDefault(0));
foreach (var deductible in deductibleDefinitions)
{
decimal deductiblePaid = CalculateDeductiblePayment(deductible, totalPaid, sumOfLowerDeductibles, payments);
if (deductiblePaid != 0)
{
var amountType = isRecovery ? StaticValues.AmountType.RecoveryReceipt : StaticValues.AmountType.Payment;
AddClaimTransactionDetails(financialContext.ClaimTransactionHeader.TransactionDate.GetValueOrDefault(DateTime.MinValue), financialContext.ClaimTransactionGroup, amountType, deductible, deductiblePaid);
}
if (isRecovery && deductible.RecoveryNonFundedMovementType != null)
{
ClaimFinancialAmount latestReserve = LatestReserveOrNull(recoveryReserves, financialContext, deductible.RecoveryNonFundedMovementType);
decimal deductibleRecoveryReserve = CalculateDeductibleRecoveryReserves(deductible, latestReserve, totalIncurred, totalRecoveryIncurred, sumOfLowerDeductibles, recoveryReserves);
// although a deductible recovery reserve is a negative amount we want to keep it as a positive for now so we can apply deductible reserve adjustments
deductibleRecoveryReserve = -deductibleRecoveryReserve;
var reserveAdjResult = ApplyDeductibleReserveAdjustments(deductible.RecoveryNonFundedMovementType, deductible, deductibleRecoveryReserveContext, financialContext, recoveryReserves, latestReserve, deductibleRecoveryReserve);
deductibleRecoveryReserveContext.AppendToLowerDeductibles(deductible.RecoveryNonFundedMovementType);
if (!reserveAdjResult.Success)
{
deductibleResult = reserveAdjResult;
}
}
if (financialContext.TransactionSource != StaticValues.ClaimTransactionSource.RecoveryReserve)
{
ClaimFinancialAmount latestReserve = LatestReserveOrNull(reserves, financialContext, deductible.NonFundedMovementType);
decimal deductibleReserve = CalculateDeductibleReserves(deductible, latestReserve, totalPaid, totalIncurred, sumOfLowerDeductibles, reserves);
var reserveAdjResult = ApplyDeductibleReserveAdjustments(deductible.NonFundedMovementType, deductible, deductibleReserveContext, financialContext, reserves, latestReserve, deductibleReserve);
deductibleReserveContext.AppendToLowerDeductibles(deductible.NonFundedMovementType);
if (!reserveAdjResult.Success)
{
deductibleResult = reserveAdjResult;
}
}
sumOfLowerDeductibles += deductible.Amount;
}
return deductibleResult;
}
