enabled percentage of interrest for loans

mifosng-provider/src/main/java/org/mifosplatform/portfolio/charge/domain/ChargeCalculationType.java

@@ -29,7 +29,12 @@ public enum ChargeCalculationType {
         return this.code;
     }
 
-    public static Object[] validValues() {
+    public static Object[] validValuesForLoan() {
+        return new Integer[] { ChargeCalculationType.FLAT.getValue(), ChargeCalculationType.PERCENT_OF_AMOUNT.getValue(),
+                ChargeCalculationType.PERCENT_OF_AMOUNT_AND_INTEREST.getValue(),ChargeCalculationType.PERCENT_OF_INTEREST.getValue() };
+    }
+    
+    public static Object[] validValuesForSavings() {
         return new Integer[] { ChargeCalculationType.FLAT.getValue(), ChargeCalculationType.PERCENT_OF_AMOUNT.getValue() };
     }
 

mifosng-provider/src/main/java/org/mifosplatform/portfolio/charge/serialization/ChargeDefinitionCommandFromApiJsonDeserializer.java

@@ -67,6 +67,9 @@ public final class ChargeDefinitionCommandFromApiJsonDeserializer {
             baseDataValidator.reset().parameter("chargeAppliesTo").value(chargeAppliesTo).isOneOfTheseValues(ChargeAppliesTo.validValues());
         }
 
+        final Integer chargeCalculationType = this.fromApiJsonHelper.extractIntegerSansLocaleNamed("chargeCalculationType", element);
+        baseDataValidator.reset().parameter("chargeCalculationType").value(chargeCalculationType).notNull();
+
         final ChargeAppliesTo appliesTo = ChargeAppliesTo.fromInt(chargeAppliesTo);
         if (appliesTo.isLoanCharge()) {
             // loan applicable validation
@@ -81,6 +84,10 @@ public final class ChargeDefinitionCommandFromApiJsonDeserializer {
             if (chargePaymentMode != null) {
                 baseDataValidator.reset().parameter("chargePaymentMode").value(chargePaymentMode).isOneOfTheseValues(ChargePaymentMode.validValues());
             }
+            
+            if (chargeCalculationType != null) {
+                baseDataValidator.reset().parameter("chargeCalculationType").value(chargeCalculationType).isOneOfTheseValues(ChargeCalculationType.validValuesForLoan());
+            }
 
         } else if (appliesTo.isSavingsCharge()) {
             // savings applicable validation
@@ -103,6 +110,10 @@ public final class ChargeDefinitionCommandFromApiJsonDeserializer {
                 final MonthDay monthDay = this.fromApiJsonHelper.extractMonthDayNamed("feeOnMonthDay", element);
                 baseDataValidator.reset().parameter("feeOnMonthDay").value(monthDay).notNull();
             }
+            
+            if (chargeCalculationType != null) {
+                baseDataValidator.reset().parameter("chargeCalculationType").value(chargeCalculationType).isOneOfTheseValues(ChargeCalculationType.validValuesForSavings());
+            }
         }
 
         final String name = this.fromApiJsonHelper.extractStringNamed("name", element);
@@ -124,12 +135,6 @@ public final class ChargeDefinitionCommandFromApiJsonDeserializer {
             baseDataValidator.reset().parameter("active").value(active).notNull();
         }
 
-        final Integer chargeCalculationType = this.fromApiJsonHelper.extractIntegerSansLocaleNamed("chargeCalculationType", element);
-        baseDataValidator.reset().parameter("chargeCalculationType").value(chargeCalculationType).notNull();
-        if (chargeCalculationType != null) {
-            baseDataValidator.reset().parameter("chargeCalculationType").value(chargeCalculationType).isOneOfTheseValues(ChargeCalculationType.validValues());
-        }
-
         if (this.fromApiJsonHelper.parameterExists("minCap", element)) {
             final BigDecimal minCap = this.fromApiJsonHelper.extractBigDecimalWithLocaleNamed("minCap", element.getAsJsonObject());
             baseDataValidator.reset().parameter("minCap").value(minCap).notNull().positiveAmount();

mifosng-provider/src/main/java/org/mifosplatform/portfolio/loanaccount/domain/Loan.java

@@ -691,12 +691,11 @@ public class Loan extends AbstractPersistable<Long> {
                 amount = getPrincpal().getAmount();
             break;
             case PERCENT_OF_AMOUNT_AND_INTEREST:
-                final BigDecimal totalInterestCharged = this.loanSummaryWrapper.calculateTotalInterestCharged(
-                        this.repaymentScheduleInstallments, getCurrency()).getAmount();
+                final BigDecimal totalInterestCharged = getTotalInterest();
                 amount = getPrincpal().getAmount().add(totalInterestCharged);
             break;
             case PERCENT_OF_INTEREST:
-                amount = getSummary().getTotalInterestCharged();
+                amount = getTotalInterest();
             break;
             default:
             break;
@@ -704,6 +703,14 @@ public class Loan extends AbstractPersistable<Long> {
         return amount;
     }
 
+    /**
+     * @return
+     */
+    public BigDecimal getTotalInterest() {
+        return this.loanSummaryWrapper.calculateTotalInterestCharged(
+                this.repaymentScheduleInstallments, getCurrency()).getAmount();
+    }
+
     private BigDecimal calculatePerInstallmentChargeAmount(final LoanCharge loanCharge) {
         return calculatePerInstallmentChargeAmount(loanCharge.getChargeCalculation(), loanCharge.getPercentage());
     }

mifosng-provider/src/main/java/org/mifosplatform/portfolio/loanaccount/domain/LoanCharge.java

@@ -72,6 +72,7 @@ public class LoanCharge extends AbstractPersistable<Long> {
     @Column(name = "calculation_on_amount", scale = 6, precision = 19, nullable = true)
     private BigDecimal amountPercentageAppliedTo;
 
+    @SuppressWarnings("unused")
     @Column(name = "charge_amount_or_percentage", scale = 6, precision = 19, nullable = false)
     private BigDecimal amountOrPercentage;
 
@@ -123,10 +124,10 @@ public class LoanCharge extends AbstractPersistable<Long> {
                 amountPercentageAppliedTo = loan.getPrincpal().getAmount();
                 break;
             case PERCENT_OF_AMOUNT_AND_INTEREST:
-                amountPercentageAppliedTo = loan.getPrincpal().getAmount().add(loan.getSummary().getTotalInterestCharged());
+                amountPercentageAppliedTo = loan.getPrincpal().getAmount().add(loan.getTotalInterest());
                 break;
             case PERCENT_OF_INTEREST:
-                amountPercentageAppliedTo = loan.getSummary().getTotalInterestCharged();
+                amountPercentageAppliedTo = loan.getTotalInterest();
             break;
             default:
                break;
@@ -367,6 +368,26 @@ public class LoanCharge extends AbstractPersistable<Long> {
             }
         }
     }
+    
+    public void update(final BigDecimal amount, final LocalDate dueDate, Integer numberOfRepayments){
+        BigDecimal amountPercentageAppliedTo = BigDecimal.ZERO;
+        if(this.loan!=null){
+            switch (ChargeCalculationType.fromInt(this.chargeCalculation)) {
+                case PERCENT_OF_AMOUNT:
+                    amountPercentageAppliedTo = loan.getPrincpal().getAmount();
+                    break;
+                case PERCENT_OF_AMOUNT_AND_INTEREST:
+                    amountPercentageAppliedTo = loan.getPrincpal().getAmount().add(loan.getTotalInterest());
+                    break;
+                case PERCENT_OF_INTEREST:
+                    amountPercentageAppliedTo = loan.getTotalInterest();
+                break;
+                default:
+                   break;
+            }
+        }
+        update(amount, dueDate, amountPercentageAppliedTo, numberOfRepayments, BigDecimal.ZERO);
+    }
 
     public Map<String, Object> update(final JsonCommand command, final BigDecimal amount) {
 

mifosng-provider/src/main/java/org/mifosplatform/portfolio/loanaccount/domain/LoanRepaymentScheduleProcessingWrapper.java

@@ -22,18 +22,22 @@ public class LoanRepaymentScheduleProcessingWrapper {
     public void reprocess(final MonetaryCurrency currency, final LocalDate disbursementDate,
             final List<LoanRepaymentScheduleInstallment> repaymentPeriods, final Set<LoanCharge> loanCharges) {
 
+        Money totalInterest = Money.zero(currency);
+        for (final LoanRepaymentScheduleInstallment installment : repaymentPeriods) {
+            totalInterest = totalInterest.plus(installment.getInterestCharged(currency));
+        }
         LocalDate startDate = disbursementDate;
         for (final LoanRepaymentScheduleInstallment period : repaymentPeriods) {
 
             final Money feeChargesDueForRepaymentPeriod = cumulativeFeeChargesDueWithin(startDate, period.getDueDate(), loanCharges,
-                    currency,period,repaymentPeriods.size());
+                    currency,period,repaymentPeriods.size(), totalInterest);
             final Money feeChargesWaivedForRepaymentPeriod = cumulativeFeeChargesWaivedWithin(startDate, period.getDueDate(), loanCharges,
                     currency);
             final Money feeChargesWrittenOffForRepaymentPeriod = cumulativeFeeChargesWrittenOffWithin(startDate, period.getDueDate(),
                     loanCharges, currency);
 
             final Money penaltyChargesDueForRepaymentPeriod = cumulativePenaltyChargesDueWithin(startDate, period.getDueDate(),
-                    loanCharges, currency,period,repaymentPeriods.size());
+                    loanCharges, currency,period,repaymentPeriods.size(), totalInterest);
             final Money penaltyChargesWaivedForRepaymentPeriod = cumulativePenaltyChargesWaivedWithin(startDate, period.getDueDate(),
                     loanCharges, currency);
             final Money penaltyChargesWrittenOffForRepaymentPeriod = cumulativePenaltyChargesWrittenOffWithin(startDate,
@@ -48,7 +52,7 @@ public class LoanRepaymentScheduleProcessingWrapper {
     }
 
     private Money cumulativeFeeChargesDueWithin(final LocalDate periodStart, final LocalDate periodEnd, final Set<LoanCharge> loanCharges,
-            final MonetaryCurrency monetaryCurrency,LoanRepaymentScheduleInstallment period,int numberOfRepayments) {
+            final MonetaryCurrency monetaryCurrency,LoanRepaymentScheduleInstallment period,int numberOfRepayments,final Money totalInterest) {
 
         Money cumulative = Money.zero(monetaryCurrency);
 
@@ -74,11 +78,11 @@ public class LoanRepaymentScheduleProcessingWrapper {
                         loanCharge.getChargeCalculation().isPercentageBased()) {
                     BigDecimal amount = BigDecimal.ZERO;
                     if (loanCharge.getChargeCalculation().isPercentageOfAmountAndInterest()) {
-                        amount = amount.add(period.getLoan().getSummary().getTotalPrincipalDisbursed()).add(period.getLoan().getSummary().getTotalInterestCharged());
+                        amount = amount.add(period.getLoan().getPrincpal().getAmount()).add(totalInterest.getAmount());
                     } else if (loanCharge.getChargeCalculation().isPercentageOfInterest()) {
-                        amount = amount.add(period.getLoan().getSummary().getTotalInterestCharged());
+                        amount = amount.add(totalInterest.getAmount());
                     } else {
-                        amount = amount.add(period.getLoan().getSummary().getTotalPrincipalDisbursed());
+                        amount = amount.add(period.getLoan().getPrincpal().getAmount());
                     }
                     BigDecimal loanChargeAmt = amount.multiply(loanCharge.getPercentage()).divide(BigDecimal.valueOf(100));
                     cumulative = cumulative.plus(loanChargeAmt);
@@ -130,7 +134,7 @@ public class LoanRepaymentScheduleProcessingWrapper {
     }
 
     private Money cumulativePenaltyChargesDueWithin(final LocalDate periodStart, final LocalDate periodEnd,
-            final Set<LoanCharge> loanCharges, final MonetaryCurrency currency,LoanRepaymentScheduleInstallment period,int numberOfRepayments) {
+            final Set<LoanCharge> loanCharges, final MonetaryCurrency currency,LoanRepaymentScheduleInstallment period,int numberOfRepayments, Money totalInterest) {
 
         Money cumulative = Money.zero(currency);
 
@@ -156,11 +160,11 @@ public class LoanRepaymentScheduleProcessingWrapper {
                         loanCharge.getChargeCalculation().isPercentageBased()) {
                     BigDecimal amount = BigDecimal.ZERO;
                     if (loanCharge.getChargeCalculation().isPercentageOfAmountAndInterest()) {
-                        amount = amount.add(period.getLoan().getSummary().getTotalPrincipalDisbursed()).add(period.getLoan().getSummary().getTotalInterestCharged());
+                        amount = amount.add(period.getLoan().getPrincpal().getAmount()).add(totalInterest.getAmount());
                     } else if (loanCharge.getChargeCalculation().isPercentageOfInterest()) {
-                        amount = amount.add(period.getLoan().getSummary().getTotalInterestCharged());
+                        amount = amount.add(totalInterest.getAmount());
                     } else {
-                        amount = amount.add(period.getLoan().getSummary().getTotalPrincipalDisbursed());
+                        amount = amount.add(period.getLoan().getPrincpal().getAmount());
                     }
                     BigDecimal loanChargeAmt = amount.multiply(loanCharge.getPercentage()).divide(BigDecimal.valueOf(100));
                     cumulative = cumulative.plus(loanChargeAmt);

mifosng-provider/src/main/java/org/mifosplatform/portfolio/loanaccount/service/LoanChargeAssembler.java

@@ -91,7 +91,7 @@ public class LoanChargeAssembler {
                         final LoanCharge loanCharge = this.loanChargeRepository.findOne(loanChargeId);
                         if (loanCharge == null) { throw new LoanChargeNotFoundException(loanChargeId); }
 
-                        loanCharge.update(amount, dueDate, principal, numberOfRepayments, BigDecimal.ZERO);
+                        loanCharge.update(amount, dueDate, numberOfRepayments);
 
                         loanCharges.add(loanCharge);
                     }