FINERACT-1971: Override enableInstallmentLevelDelinquency loan application

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

@@ -1223,6 +1223,8 @@ final class LoansApiResourceSwagger {
         public Integer graceOnArrearsAgeing;
         @Schema(example = "HORIZONTAL")
         public String loanScheduleProcessingType;
+        @Schema(example = "false")
+        public Boolean enableInstallmentLevelDelinquency;
     }
 
     @Schema(description = "PostLoansResponse")

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

@@ -104,7 +104,8 @@ public final class LoanApplicationCommandFromApiJsonHelper {
             LoanApiConstants.lastApplication, // glim specific
             LoanApiConstants.daysInYearTypeParameterName, LoanApiConstants.fixedPrincipalPercentagePerInstallmentParamName,
             LoanApiConstants.DISALLOW_EXPECTED_DISBURSEMENTS, LoanApiConstants.FRAUD_ATTRIBUTE_NAME,
-            LoanProductConstants.LOAN_SCHEDULE_PROCESSING_TYPE, LoanProductConstants.FIXED_LENGTH));
+            LoanProductConstants.LOAN_SCHEDULE_PROCESSING_TYPE, LoanProductConstants.FIXED_LENGTH,
+            LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY));
     public static final String LOANAPPLICATION_UNDO = "loanapplication.undo";
 
     private final FromJsonHelper fromApiJsonHelper;
@@ -581,6 +582,22 @@ public final class LoanApplicationCommandFromApiJsonHelper {
         }
 
         validatePartialPeriodSupport(interestCalculationPeriodType, baseDataValidator, element, loanProduct);
+
+        // validate enable installment level delinquency
+        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(dataValidationErrors);
         }

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

@@ -327,7 +327,13 @@ public class LoanAssembler {
             }
         }
 
-        loanApplication.updateEnableInstallmentLevelDelinquency(loanProduct.isEnableInstallmentLevelDelinquency());
+        final Boolean isEnableInstallmentLevelDelinquency = this.fromApiJsonHelper
+                .extractBooleanNamed(LoanProductConstants.ENABLE_INSTALLMENT_LEVEL_DELINQUENCY, element);
+        if (isEnableInstallmentLevelDelinquency != null) {
+            loanApplication.updateEnableInstallmentLevelDelinquency(isEnableInstallmentLevelDelinquency);
+        } else {
+            loanApplication.updateEnableInstallmentLevelDelinquency(loanProduct.isEnableInstallmentLevelDelinquency());
+        }
 
         final LoanApplicationTerms loanApplicationTerms = this.loanScheduleAssembler.assembleLoanTerms(element);
         final boolean isHolidayEnabled = this.configurationDomainService.isRescheduleRepaymentsOnHolidaysEnabled();