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/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package com.gst.portfolio.loanaccount.rescheduleloan.data; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.Collection; import java.util.List; import java.util.Map; import org.apache.commons.lang.StringUtils; import com.gst.infrastructure.core.api.JsonCommand; import com.gst.infrastructure.core.data.ApiParameterError; import com.gst.infrastructure.core.data.DataValidatorBuilder; import com.gst.infrastructure.core.exception.InvalidJsonException; import com.gst.infrastructure.core.exception.PlatformApiDataValidationException; import com.gst.infrastructure.core.serialization.FromJsonHelper; import com.gst.portfolio.loanaccount.domain.Loan; import com.gst.portfolio.loanaccount.domain.LoanCharge; import com.gst.portfolio.loanaccount.domain.LoanRepaymentScheduleInstallment; import com.gst.portfolio.loanaccount.rescheduleloan.RescheduleLoansApiConstants; import com.gst.portfolio.loanaccount.rescheduleloan.domain.LoanRescheduleRequest; import org.joda.time.LocalDate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import com.google.gson.JsonElement; import com.google.gson.reflect.TypeToken; @Component public class LoanRescheduleRequestDataValidator { private final FromJsonHelper fromJsonHelper; @Autowired public LoanRescheduleRequestDataValidator(FromJsonHelper fromJsonHelper) { this.fromJsonHelper = fromJsonHelper; } /** * Validates the request to create a new loan reschedule entry * * @param jsonCommand * the JSON command object (instance of the JsonCommand class) * @return void **/ public void validateForCreateAction(final JsonCommand jsonCommand, final Loan loan) { final String jsonString = jsonCommand.json(); if (StringUtils.isBlank(jsonString)) { throw new InvalidJsonException(); } final Type typeToken = new TypeToken<Map<String, Object>>() { }.getType(); this.fromJsonHelper.checkForUnsupportedParameters(typeToken, jsonString, RescheduleLoansApiConstants.CREATE_REQUEST_DATA_PARAMETERS); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder dataValidatorBuilder = new DataValidatorBuilder(dataValidationErrors) .resource(StringUtils.lowerCase(RescheduleLoansApiConstants.ENTITY_NAME)); final JsonElement jsonElement = jsonCommand.parsedJson(); if (!loan.status().isActive()) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode("loan.is.not.active", "Loan is not active"); } final Long loanId = this.fromJsonHelper.extractLongNamed(RescheduleLoansApiConstants.loanIdParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.loanIdParamName).value(loanId).notNull() .integerGreaterThanZero(); final LocalDate submittedOnDate = this.fromJsonHelper .extractLocalDateNamed(RescheduleLoansApiConstants.submittedOnDateParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.submittedOnDateParamName) .value(submittedOnDate).notNull(); if (submittedOnDate != null && loan.getDisbursementDate().isAfter(submittedOnDate)) { dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.submittedOnDateParamName) .failWithCode("before.loan.disbursement.date", "Submission date cannot be before the loan disbursement date"); } final LocalDate rescheduleFromDate = this.fromJsonHelper .extractLocalDateNamed(RescheduleLoansApiConstants.rescheduleFromDateParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rescheduleFromDateParamName) .value(rescheduleFromDate).notNull(); final Integer graceOnPrincipal = this.fromJsonHelper .extractIntegerWithLocaleNamed(RescheduleLoansApiConstants.graceOnPrincipalParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.graceOnPrincipalParamName) .value(graceOnPrincipal).ignoreIfNull().integerGreaterThanZero(); final Integer graceOnInterest = this.fromJsonHelper .extractIntegerWithLocaleNamed(RescheduleLoansApiConstants.graceOnInterestParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.graceOnInterestParamName) .value(graceOnInterest).ignoreIfNull().integerGreaterThanZero(); final Integer extraTerms = this.fromJsonHelper .extractIntegerWithLocaleNamed(RescheduleLoansApiConstants.extraTermsParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.extraTermsParamName).value(extraTerms) .ignoreIfNull().integerGreaterThanZero(); final Long rescheduleReasonId = this.fromJsonHelper .extractLongNamed(RescheduleLoansApiConstants.rescheduleReasonIdParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rescheduleReasonIdParamName) .value(rescheduleReasonId).notNull().integerGreaterThanZero(); final String rescheduleReasonComment = this.fromJsonHelper .extractStringNamed(RescheduleLoansApiConstants.rescheduleReasonCommentParamName, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rescheduleReasonCommentParamName) .value(rescheduleReasonComment).ignoreIfNull().notExceedingLengthOf(500); final LocalDate adjustedDueDate = this.fromJsonHelper .extractLocalDateNamed(RescheduleLoansApiConstants.adjustedDueDateParamName, jsonElement); if (adjustedDueDate != null && rescheduleFromDate != null && adjustedDueDate.isBefore(rescheduleFromDate)) { dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rescheduleFromDateParamName) .failWithCode("adjustedDueDate.before.rescheduleFromDate", "Adjusted due date cannot be before the reschedule from date"); } // at least one of the following must be provided => graceOnPrincipal, // graceOnInterest, extraTerms, newInterestRate if (!this.fromJsonHelper.parameterExists(RescheduleLoansApiConstants.graceOnPrincipalParamName, jsonElement) && !this.fromJsonHelper.parameterExists(RescheduleLoansApiConstants.graceOnInterestParamName, jsonElement) && !this.fromJsonHelper.parameterExists(RescheduleLoansApiConstants.extraTermsParamName, jsonElement) && !this.fromJsonHelper.parameterExists(RescheduleLoansApiConstants.newInterestRateParamName, jsonElement) && !this.fromJsonHelper.parameterExists(RescheduleLoansApiConstants.adjustedDueDateParamName, jsonElement)) { dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.graceOnPrincipalParamName).notNull(); } LoanRepaymentScheduleInstallment installment = null; if (rescheduleFromDate != null) { installment = loan.getRepaymentScheduleInstallment(rescheduleFromDate); if (installment == null) { dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rescheduleFromDateParamName) .failWithCode("repayment.schedule.installment.does.not.exist", "Repayment schedule installment does not exist"); } if (installment != null && installment.isObligationsMet()) { dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rescheduleFromDateParamName) .failWithCode("repayment.schedule.installment.obligation.met", "Repayment schedule installment obligation met"); } } if (loan.isMultiDisburmentLoan()) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode( RescheduleLoansApiConstants.resheduleForMultiDisbursementNotSupportedErrorCode, "Loan rescheduling is not supported for multidisbursement loans"); } if (loan.isInterestRecalculationEnabledForProduct()) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode( RescheduleLoansApiConstants.resheduleWithInterestRecalculationNotSupportedErrorCode, "Loan rescheduling is not supported for the loan product with interest recalculation enabled"); } validateForOverdueCharges(dataValidatorBuilder, loan, installment); if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); } } private void validateForOverdueCharges(DataValidatorBuilder dataValidatorBuilder, final Loan loan, final LoanRepaymentScheduleInstallment installment) { if (installment != null) { LocalDate rescheduleFromDate = installment.getFromDate(); Collection<LoanCharge> charges = loan.getLoanCharges(); for (LoanCharge loanCharge : charges) { if (loanCharge.isOverdueInstallmentCharge() && loanCharge.getDueLocalDate().isAfter(rescheduleFromDate)) { dataValidatorBuilder .failWithCodeNoParameterAddedToErrorCode("not.allowed.due.to.overdue.charges"); break; } } } } /** * Validates a user request to approve a loan reschedule request * * @param jsonCommand * the JSON command object (instance of the JsonCommand class) * @return void **/ public void validateForApproveAction(final JsonCommand jsonCommand, LoanRescheduleRequest loanRescheduleRequest) { final String jsonString = jsonCommand.json(); if (StringUtils.isBlank(jsonString)) { throw new InvalidJsonException(); } final Type typeToken = new TypeToken<Map<String, Object>>() { }.getType(); this.fromJsonHelper.checkForUnsupportedParameters(typeToken, jsonString, RescheduleLoansApiConstants.APPROVE_REQUEST_DATA_PARAMETERS); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder dataValidatorBuilder = new DataValidatorBuilder(dataValidationErrors) .resource(StringUtils.lowerCase(RescheduleLoansApiConstants.ENTITY_NAME)); final JsonElement jsonElement = jsonCommand.parsedJson(); final LocalDate approvedOnDate = this.fromJsonHelper .extractLocalDateNamed(RescheduleLoansApiConstants.approvedOnDateParam, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.approvedOnDateParam) .value(approvedOnDate).notNull(); if (approvedOnDate != null && loanRescheduleRequest.getSubmittedOnDate().isAfter(approvedOnDate)) { dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.approvedOnDateParam).failWithCode( "before.submission.date", "Approval date cannot be before the request submission date."); } LoanRescheduleRequestStatusEnumData loanRescheduleRequestStatusEnumData = LoanRescheduleRequestEnumerations .status(loanRescheduleRequest.getStatusEnum()); if (!loanRescheduleRequestStatusEnumData.isPendingApproval()) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode( "request.is.not.in.submitted.and.pending.state", "Loan reschedule request approval is not allowed. " + "Loan reschedule request is not in submitted and pending approval state."); } LocalDate rescheduleFromDate = loanRescheduleRequest.getRescheduleFromDate(); final Loan loan = loanRescheduleRequest.getLoan(); LoanRepaymentScheduleInstallment installment = null; if (loan != null) { if (!loan.status().isActive()) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode("loan.is.not.active", "Loan is not active"); } if (rescheduleFromDate != null) { installment = loan.getRepaymentScheduleInstallment(rescheduleFromDate); if (installment == null) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode( "loan.repayment.schedule.installment.does.not.exist", "Repayment schedule installment does not exist"); } if (installment != null && installment.isObligationsMet()) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode( "loan.repayment.schedule.installment." + "obligation.met", "Repayment schedule installment obligation met"); } } } validateForOverdueCharges(dataValidatorBuilder, loan, installment); if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); } } /** * Validates a user request to reject a loan reschedule request * * @param jsonCommand * the JSON command object (instance of the JsonCommand class) * @return void **/ public void validateForRejectAction(final JsonCommand jsonCommand, LoanRescheduleRequest loanRescheduleRequest) { final String jsonString = jsonCommand.json(); if (StringUtils.isBlank(jsonString)) { throw new InvalidJsonException(); } final Type typeToken = new TypeToken<Map<String, Object>>() { }.getType(); this.fromJsonHelper.checkForUnsupportedParameters(typeToken, jsonString, RescheduleLoansApiConstants.REJECT_REQUEST_DATA_PARAMETERS); final List<ApiParameterError> dataValidationErrors = new ArrayList<>(); final DataValidatorBuilder dataValidatorBuilder = new DataValidatorBuilder(dataValidationErrors) .resource(StringUtils.lowerCase(RescheduleLoansApiConstants.ENTITY_NAME)); final JsonElement jsonElement = jsonCommand.parsedJson(); final LocalDate rejectedOnDate = this.fromJsonHelper .extractLocalDateNamed(RescheduleLoansApiConstants.rejectedOnDateParam, jsonElement); dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rejectedOnDateParam) .value(rejectedOnDate).notNull(); if (rejectedOnDate != null && loanRescheduleRequest.getSubmittedOnDate().isAfter(rejectedOnDate)) { dataValidatorBuilder.reset().parameter(RescheduleLoansApiConstants.rejectedOnDateParam).failWithCode( "before.submission.date", "Rejection date cannot be before the request submission date."); } LoanRescheduleRequestStatusEnumData loanRescheduleRequestStatusEnumData = LoanRescheduleRequestEnumerations .status(loanRescheduleRequest.getStatusEnum()); if (!loanRescheduleRequestStatusEnumData.isPendingApproval()) { dataValidatorBuilder.reset().failWithCodeNoParameterAddedToErrorCode( "request.is.not.in.submitted.and.pending.state", "Loan reschedule request rejection is not allowed. " + "Loan reschedule request is not in submitted and pending approval state."); } if (!dataValidationErrors.isEmpty()) { throw new PlatformApiDataValidationException(dataValidationErrors); } } }