#164_compounding interest is greater than posting inerest

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/SavingsAccount.java

@@ -2666,8 +2666,7 @@ public class SavingsAccount extends AbstractPersistableCustom<Long> {
         SavingsCompoundingInterestPeriodType savingsCompoundingInterestPeriodType = SavingsCompoundingInterestPeriodType
                 .fromInt(interestCompoundingPeriodType);
 
-        if (postingtoCompoundMap.get(savingsPostingInterestPeriodType) == null
-                || !postingtoCompoundMap.get(savingsPostingInterestPeriodType).contains(savingsCompoundingInterestPeriodType)) {
+        if (postingtoCompoundMap.get(savingsPostingInterestPeriodType) == null) {
             baseDataValidator.failWithCodeNoParameterAddedToErrorCode("posting.period.type.is.less.than.compound.period.type",
                     savingsPostingInterestPeriodType.name(), savingsCompoundingInterestPeriodType.name());
 

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/AnnualCompoundingPeriod.java

@@ -178,4 +178,9 @@ public class AnnualCompoundingPeriod implements CompoundingPeriod {
         this.periodInterval = periodInterval;
         this.endOfDayBalances = endOfDayBalances;
     }
+
+	@Override
+	public LocalDateInterval getPeriodInterval() {
+		return this.periodInterval;
+	}
 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/BiAnnualCompoundingPeriod.java

@@ -178,4 +178,9 @@ public class BiAnnualCompoundingPeriod implements CompoundingPeriod {
         this.periodInterval = periodInterval;
         this.endOfDayBalances = endOfDayBalances;
     }
+
+	@Override
+	public LocalDateInterval getPeriodInterval() {
+		return this.periodInterval;
+	}
 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/CompoundInterestHelper.java

@@ -46,10 +46,13 @@ public class CompoundInterestHelper {
         Money interestEarned = Money.zero(currency);
 
         // total interest earned in previous periods but not yet recognised
-        BigDecimal interestEarnedButNotPosted = BigDecimal.ZERO;
+		BigDecimal compoundedInterest = BigDecimal.ZERO;
+		BigDecimal unCompoundedInterest = BigDecimal.ZERO;
+		final CompoundInterestValues compoundInterestValues = new CompoundInterestValues(compoundedInterest,
+				unCompoundedInterest);
         for (final PostingPeriod postingPeriod : allPeriods) {
 
-            final BigDecimal interestEarnedThisPeriod = postingPeriod.calculateInterest(interestEarnedButNotPosted);
+            final BigDecimal interestEarnedThisPeriod = postingPeriod.calculateInterest(compoundInterestValues);
 
             final Money moneyToBePostedForPeriod = Money.of(currency, interestEarnedThisPeriod);
 
@@ -58,9 +61,9 @@ public class CompoundInterestHelper {
             // interest for accounts which has post interest to linked savings
             // account and if already transfered then it includes in interest
             // calculation.
-            if (postingPeriod.isInterestTransfered() || !interestTransferEnabled
-                    || (lockUntil != null && !postingPeriod.dateOfPostingTransaction().isAfter(lockUntil))) {
-                interestEarnedButNotPosted = interestEarnedButNotPosted.add(moneyToBePostedForPeriod.getAmount());
+            if (!(postingPeriod.isInterestTransfered() || !interestTransferEnabled
+                    || (lockUntil != null && !postingPeriod.dateOfPostingTransaction().isAfter(lockUntil)))) {
+            	compoundInterestValues.setcompoundedInterest(BigDecimal.ZERO);
             }
         }
 

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/CompoundInterestValues.java

@@ -0,0 +1,35 @@
+package org.apache.fineract.portfolio.savings.domain.interest;
+
+import java.math.BigDecimal;
+
+public class CompoundInterestValues {
+
+	private BigDecimal compoundedInterest;
+	private BigDecimal uncompoundedInterest;
+
+	public CompoundInterestValues(final BigDecimal compoundedInterest, final BigDecimal uncompoundedInterest) {
+		this.compoundedInterest = compoundedInterest;
+		this.uncompoundedInterest = uncompoundedInterest;
+	}
+
+	public BigDecimal getcompoundedInterest() {
+		return this.compoundedInterest;
+	}
+
+	public BigDecimal getuncompoundedInterest() {
+		return this.uncompoundedInterest;
+	}
+
+	public void setcompoundedInterest(BigDecimal interestToBeCompounded) {
+		this.compoundedInterest = interestToBeCompounded;
+	}
+
+	public void setuncompoundedInterest(BigDecimal interestToBeUncompounded) {
+		this.uncompoundedInterest = interestToBeUncompounded;
+	}
+
+	public void setZeroForInterestToBeUncompounded() {
+		this.uncompoundedInterest = BigDecimal.ZERO;
+	}
+
+}

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/CompoundingPeriod.java

@@ -20,6 +20,7 @@ package org.apache.fineract.portfolio.savings.domain.interest;
 
 import java.math.BigDecimal;
 
+import org.apache.fineract.infrastructure.core.domain.LocalDateInterval;
 import org.apache.fineract.portfolio.savings.SavingsCompoundingInterestPeriodType;
 import org.apache.fineract.portfolio.savings.SavingsInterestCalculationType;
 
@@ -29,4 +30,5 @@ public interface CompoundingPeriod {
             SavingsInterestCalculationType interestCalculationType, BigDecimal interestFromPreviousPostingPeriod,
             BigDecimal interestRateAsFraction, long daysInYear, BigDecimal minBalanceForInterestCalculation, 
             BigDecimal overdraftInterestRateAsFraction, BigDecimal minOverdraftForInterestCalculation);
+    LocalDateInterval getPeriodInterval();
 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/DailyCompoundingPeriod.java

@@ -30,7 +30,6 @@ import org.joda.time.LocalDate;
 
 public class DailyCompoundingPeriod implements CompoundingPeriod {
 
-    @SuppressWarnings("unused")
     private final LocalDateInterval periodInterval;
     private final List<EndOfDayBalance> endOfDayBalances;
 
@@ -77,8 +76,8 @@ public class DailyCompoundingPeriod implements CompoundingPeriod {
 
     @Override
     public BigDecimal calculateInterest(
-            @SuppressWarnings("unused") final SavingsCompoundingInterestPeriodType compoundingInterestPeriodType,
-            @SuppressWarnings("unused") final SavingsInterestCalculationType interestCalculationType,
+            final SavingsCompoundingInterestPeriodType compoundingInterestPeriodType,
+            final SavingsInterestCalculationType interestCalculationType,
             final BigDecimal interestFromPreviousPostingPeriod, final BigDecimal interestRateAsFraction, final long daysInYear,
             final BigDecimal minBalanceForInterestCalculation,
             final BigDecimal overdraftInterestRateAsFraction, final BigDecimal minOverdraftForInterestCalculation) {
@@ -97,4 +96,9 @@ public class DailyCompoundingPeriod implements CompoundingPeriod {
 
         return interestEarned;
     }
+
+	@Override
+	public LocalDateInterval getPeriodInterval() {
+		return this.periodInterval;
+	}
 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/MonthlyCompoundingPeriod.java

@@ -174,4 +174,9 @@ public class MonthlyCompoundingPeriod implements CompoundingPeriod {
         this.periodInterval = periodInterval;
         this.endOfDayBalances = endOfDayBalances;
     }
+
+	@Override
+	public LocalDateInterval getPeriodInterval() {
+		return this.periodInterval;
+	}
 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/PostingPeriod.java

@@ -194,19 +194,32 @@ public class PostingPeriod {
         return this.openingBalance;
     }
 
-    public BigDecimal calculateInterest(final BigDecimal interestFromPreviousPostingPeriod) {
+    public BigDecimal calculateInterest(final CompoundInterestValues compoundInterestValues) {
         BigDecimal interestEarned = BigDecimal.ZERO;
 
         // for each compounding period accumulate the amount of interest
         // to be applied to the balanced for interest calculation
-        BigDecimal interestCompounded = interestFromPreviousPostingPeriod;
         for (final CompoundingPeriod compoundingPeriod : this.compoundingPeriods) {
 
             final BigDecimal interestUnrounded = compoundingPeriod.calculateInterest(this.interestCompoundingType,
-                    this.interestCalculationType, interestCompounded, this.interestRateAsFraction, this.daysInYear,
+                    this.interestCalculationType, compoundInterestValues.getcompoundedInterest(), this.interestRateAsFraction, this.daysInYear,
                     this.minBalanceForInterestCalculation.getAmount(), 	this.overdraftInterestRateAsFraction,
                     this.minOverdraftForInterestCalculation.getAmount());
-            interestCompounded = interestCompounded.add(interestUnrounded);
+			BigDecimal unCompoundedInterest = compoundInterestValues.getuncompoundedInterest().add(interestUnrounded);
+			compoundInterestValues.setuncompoundedInterest(unCompoundedInterest);
+			LocalDate compoundingPeriodEndDate = compoundingPeriod.getPeriodInterval().endDate();
+			if (!SavingsCompoundingInterestPeriodType.DAILY.equals(this.interestCompoundingType)) {
+				compoundingPeriodEndDate = determineInterestPeriodEndDateFrom(
+						compoundingPeriod.getPeriodInterval().startDate(), this.interestCompoundingType,
+						compoundingPeriod.getPeriodInterval().endDate());
+			}
+
+			if (compoundingPeriodEndDate.equals(compoundingPeriod.getPeriodInterval().endDate())) {
+				BigDecimal interestCompounded = compoundInterestValues.getcompoundedInterest()
+						.add(unCompoundedInterest);
+				compoundInterestValues.setcompoundedInterest(interestCompounded);
+				compoundInterestValues.setZeroForInterestToBeUncompounded();
+			}
             interestEarned = interestEarned.add(interestUnrounded);
         }
 

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/interest/QuarterlyCompoundingPeriod.java

@@ -31,7 +31,6 @@ import org.joda.time.LocalDate;
 
 public class QuarterlyCompoundingPeriod implements CompoundingPeriod {
 
-    @SuppressWarnings("unused")
     private final LocalDateInterval periodInterval;
     private final List<EndOfDayBalance> endOfDayBalances;
 
@@ -178,4 +177,9 @@ public class QuarterlyCompoundingPeriod implements CompoundingPeriod {
         this.periodInterval = periodInterval;
         this.endOfDayBalances = endOfDayBalances;
     }
+
+	@Override
+	public LocalDateInterval getPeriodInterval() {
+		return this.periodInterval;
+	}
 }