FINERACT-1971: Installment level delinquency for loan modification

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/api/LoansApiResourceSwagger.java

@@ -1372,6 +1372,8 @@ final class LoansApiResourceSwagger {
         public List<PutLoansLoanIdDisbursementData> disbursementData;
         @Schema(example = "HORIZONTAL")
         public String loanScheduleProcessingType;
+        @Schema(example = "false")
+        public Boolean enableInstallmentLevelDelinquency;
 
         static final class PutLoansLoanIdChanges {
 

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/serialization/CalculateLoanScheduleQueryFromApiJsonHelper.java

@@ -71,7 +71,7 @@ public final class CalculateLoanScheduleQueryFromApiJsonHelper {
             LoanApiConstants.repaymentFrequencyDayOfWeekTypeParameterName, LoanApiConstants.isTopup, LoanApiConstants.loanIdToClose,
             LoanApiConstants.datatables, LoanApiConstants.isEqualAmortizationParam, LoanProductConstants.RATES_PARAM_NAME,
             LoanApiConstants.daysInYearTypeParameterName, LoanApiConstants.fixedPrincipalPercentagePerInstallmentParamName,
-            LoanProductConstants.FIXED_LENGTH));
+            LoanProductConstants.FIXED_LENGTH, LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY));
 
     private final FromJsonHelper fromApiJsonHelper;
 

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/serialization/LoanApplicationCommandFromApiJsonHelper.java

@@ -1134,6 +1134,20 @@ public final class LoanApplicationCommandFromApiJsonHelper {
             advancedPaymentAllocationsValidator.checkGroupingOfAllocationRules(allocationRules);
         }
 
+        if (this.fromApiJsonHelper.parameterExists(LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY, element)) {
+            final Boolean isEnableInstallmentLevelDelinquency = this.fromApiJsonHelper
+                    .extractBooleanNamed(LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY, element);
+            baseDataValidator.reset().parameter(LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY)
+                    .value(isEnableInstallmentLevelDelinquency).validateForBooleanValue();
+            if (loanProduct.getDelinquencyBucket() == null) {
+                if (isEnableInstallmentLevelDelinquency) {
+                    baseDataValidator.reset().parameter(LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY).failWithCode(
+                            "can.be.enabled.for.loan.with.loan.product.having.valid.delinquency.bucket",
+                            "Installment level delinquency cannot be enabled for a loan if Delinquency bucket is not configured for loan product");
+                }
+            }
+        }
+
         if (!dataValidationErrors.isEmpty()) {
             throw new PlatformApiDataValidationException("validation.msg.validation.errors.exist", "Validation errors exist.",
                     dataValidationErrors);

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/service/LoanApplicationWritePlatformServiceJpaRepositoryImpl.java

@@ -970,6 +970,14 @@ public class LoanApplicationWritePlatformServiceJpaRepositoryImpl implements Loa
                 existingLoanApplication.updateLoanCharges(possiblyModifedLoanCharges);
             }
 
+            // update installment level delinquency
+            if (command.isChangeInBooleanParameterNamed(LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY,
+                    existingLoanApplication.isEnableInstallmentLevelDelinquency())) {
+                final Boolean enableInstallmentLevelDelinquency = command
+                        .booleanObjectValueOfParameterNamed(LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY);
+                existingLoanApplication.updateEnableInstallmentLevelDelinquency(enableInstallmentLevelDelinquency);
+            }
+
             if (changes.containsKey("recalculateLoanSchedule")) {
                 changes.remove("recalculateLoanSchedule");