package net.gepafin.tendermanagement.dao;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import jakarta.persistence.criteria.Join;
import jakarta.persistence.criteria.Predicate;
import jakarta.servlet.http.HttpServletRequest;
import net.gepafin.tendermanagement.config.Translator;
import net.gepafin.tendermanagement.constants.GepafinConstant;
import net.gepafin.tendermanagement.entities.*;
import net.gepafin.tendermanagement.enums.*;
import net.gepafin.tendermanagement.model.request.ApplicationAmendmentRequest;
import net.gepafin.tendermanagement.model.request.ApplicationAmendmentRequestBean;
import net.gepafin.tendermanagement.model.request.ApplicationFormFieldRequestBean;
import net.gepafin.tendermanagement.model.request.CloseAmendmentRequest;
import net.gepafin.tendermanagement.model.response.*;
import net.gepafin.tendermanagement.repositories.*;
import net.gepafin.tendermanagement.service.*;
import net.gepafin.tendermanagement.util.DateTimeUtil;
import net.gepafin.tendermanagement.util.Validator;
import net.gepafin.tendermanagement.entities.SystemEmailTemplatesEntity.SystemEmailTemplatesEntityTypeEnum;
import net.gepafin.tendermanagement.util.Utils;
import net.gepafin.tendermanagement.web.rest.api.errors.CustomValidationException;
import net.gepafin.tendermanagement.web.rest.api.errors.ResourceNotFoundException;
import net.gepafin.tendermanagement.web.rest.api.errors.Status;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Component;

import java.time.temporal.ChronoUnit;


import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

import static net.gepafin.tendermanagement.util.Utils.log;
import static net.gepafin.tendermanagement.util.Utils.setIfUpdated;

@Component
public class ApplicationAmendmentRequestDao {
    @Value("${application.amendment.expiration.days}")
    private long expirationDays;

    @Autowired
    private ApplicationService applicationService;

    @Autowired
    private UserService userService;

    @Autowired
    private DocumentService documentService;

    @Autowired
    private ApplicationFormRepository applicationFormRepository;

    @Autowired
    private ApplicationAmendmentRequestRepository applicationAmendmentRequestRepository;

    @Autowired
    private ApplicationFormFieldRepository applicationFormFieldRepository;

    @Autowired
    private EmailNotificationDao emailNotificationDao;

    @Autowired
    private ApplicationEvaluationService applicationEvaluationService;

    @Autowired
    private ProtocolDao protocolDao;

    @Autowired
    private AssignedApplicationsService assignedApplicationsService;

    @Autowired
    private ApplicationEvaluationRepository applicationEvaluationRepository;

    @Autowired
    private ApplicationRepository applicationRepository;

    @Autowired
    private AssignedApplicationsRepository assignedApplicationsRepository;
    @Autowired
    private SystemEmailTemplatesService systemEmailTemplatesService;

    @Autowired
    private CallDao callDao;

    @Autowired
    private DocumentRepository documentRepository;

    @Autowired
    private HubService hubService;
//    @Autowired
//    private MailUtil mailUtil;

    @Autowired
    private Validator validator;

    public ApplicationAmendmentRequestResponse getApplicationDataForAmendment(Long applicationEvaluationId) {
        log.info("Fetching the application data for the Amendment process {}", applicationEvaluationId);
        ApplicationEvaluationEntity applicationEvaluationEntity = applicationEvaluationService.validateApplicationEvaluation(applicationEvaluationId);
        Long applicationId = applicationEvaluationEntity.getApplicationId();
        ApplicationEntity application = applicationService.validateApplication(applicationId);

        // Set common application-level details
        String callName = application.getCall().getName();
        Long protocolNumber = (application.getProtocol() != null && application.getProtocol().getProtocolNumber() != null)
                ? application.getProtocol().getProtocolNumber()
                : null;

        UserEntity userEntity = userService.validateUser(application.getUserId());
        String firstName = userEntity.getBeneficiary() != null ? userEntity.getBeneficiary().getFirstName() : "";
        String lastName = userEntity.getBeneficiary() != null ? userEntity.getBeneficiary().getLastName() : "";

        String beneficiaryName = (!firstName.isBlank() ? firstName : "") +
                (!lastName.isBlank() ? " " + lastName : "");
        beneficiaryName = beneficiaryName.isBlank() ? "" : beneficiaryName;

        ApplicationAmendmentRequestResponse response = new ApplicationAmendmentRequestResponse();
        response.setId(applicationEvaluationId);
        response.setProtocolNumber(protocolNumber);
        response.setCallName(callName);
        response.setBeneficiaryName(beneficiaryName);
        response.setApplicationId(applicationId);
        response.setApplicationEvaluationId(applicationEvaluationId);

        List<ApplicationFormEntity> forms = applicationFormRepository.findByApplicationId(applicationId);
        List<AmendmentFormFieldResponse> allFormFields = new ArrayList<>();

        for (ApplicationFormEntity form : forms) {
            String content = form.getForm().getContent();
            List<Map<String, Object>> result = filterByName(content, "fileupload");
            allFormFields.addAll(getIdAndLabelFromResult(result));
        }

        response.setFormFields(allFormFields);

        return response;
    }


    public List<AmendmentFormFieldResponse> getIdAndLabelFromResult(List<Map<String, Object>> result) {
        List<AmendmentFormFieldResponse> formFieldResponses = new ArrayList<>();

        for (Map<String, Object> item : result) {
            AmendmentFormFieldResponse formFieldResponse = new AmendmentFormFieldResponse();
            formFieldResponse.setFieldId((String) item.get("id"));

            // Extract "label" value from the "settings" array
            List<Map<String, Object>> settings = (List<Map<String, Object>>) item.get("settings");
            String label = settings.stream()
                    .filter(setting -> "label".equals(setting.get("name")))
                    .map(setting -> (String) setting.get("value"))
                    .findFirst()
                    .orElse(""); // Default to empty string if not found

            if (label == null || label.trim().isEmpty()) {
                continue;
            }

            formFieldResponse.setLabel(label); // Set the label as fieldValue
            formFieldResponses.add(formFieldResponse);
        }

        return formFieldResponses;
    }


    public static List<Map<String, Object>> filterByName(String content, String target) {
        ObjectMapper objectMapper = new ObjectMapper();
        List<Map<String, Object>> filteredList = new ArrayList<>();

        try {
            List<Map<String, Object>> dataList = objectMapper.readValue(
                    content, new TypeReference<List<Map<String, Object>>>() {});

            for (Map<String, Object> data : dataList) {
                if (target.equals(data.get("name"))) {
                    filteredList.add(data);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return filteredList;
    }

    public ApplicationAmendmentRequestResponse createApplicationAmendmentRequest(Long applicationEvaluationId, ApplicationAmendmentRequest applicationAmendmentRequest){
        log.info("Submiting application data for amendment Process with details: {}", applicationEvaluationId);

        ApplicationAmendmentRequestEntity applicationAmendmentRequestEntity = createApplicationAmendmentRequestEntity(applicationAmendmentRequest, applicationEvaluationId);
        ApplicationAmendmentRequestResponse applicationAmendmentRequestResponse = convertEntityToResponse(applicationAmendmentRequestEntity);
        log.info("Application submitted successfully for amendment", applicationAmendmentRequestResponse);
        if(Boolean.TRUE.equals(applicationAmendmentRequestResponse.isSendEmail())){
            emailNotificationDao.sendMailToNotifyBeneficiaryRegardingNewAmendment(applicationAmendmentRequestEntity);
        }
        return applicationAmendmentRequestResponse;
    }

    public ApplicationAmendmentRequestEntity createApplicationAmendmentRequestEntity(ApplicationAmendmentRequest applicationAmendmentRequest,Long applicationEvaluationId){
        ApplicationAmendmentRequestEntity applicationAmendmentRequestEntity = new ApplicationAmendmentRequestEntity();
        applicationAmendmentRequestEntity.setNote(applicationAmendmentRequest.getNote());
        applicationAmendmentRequestEntity.setResponseDays(applicationAmendmentRequest.getResponseDays());
        applicationAmendmentRequestEntity.setIsEmail(applicationAmendmentRequest.getIsSendEmail());
        applicationAmendmentRequestEntity.setIsNotification(applicationAmendmentRequest.getIsSendNotification());
        applicationAmendmentRequestEntity.setStartDate(DateTimeUtil.DateServerToUTC(LocalDateTime.now()));
        applicationAmendmentRequestEntity.setStatus(ApplicationAmendmentRequestEnum.AWAITING.getValue());
        ApplicationEvaluationEntity applicationEvaluationEntity = applicationEvaluationService.validateApplicationEvaluation(applicationEvaluationId);

        applicationAmendmentRequestEntity.setApplicationEvaluationEntity(applicationEvaluationEntity);
        Long applicationId = applicationEvaluationEntity.getApplicationId();
        Long assignedApplicationId = applicationEvaluationEntity.getAssignedApplicationsEntity().getId();
        applicationAmendmentRequestEntity.setApplicationId(applicationId);

        if (applicationAmendmentRequest.getFormFields() != null) {
            String fieldIdsString = applicationAmendmentRequest.getFormFields().stream()
                    .filter(AmendmentFormFieldResponse::isSelected)
                    .map(AmendmentFormFieldResponse::getFieldId)
                    .collect(Collectors.joining(","));
            applicationAmendmentRequestEntity.setFormFields(fieldIdsString);
        }
        UserEntity userEntity = userService.validateUser(applicationEvaluationEntity.getUserId());
        Long protocolNumber = protocolDao.getProtocolNumber(userEntity.getHub());
        ProtocolEntity protocolEntity = protocolDao.createProtocolEntity(
                applicationEvaluationEntity.getAssignedApplicationsEntity().getApplication(), protocolNumber,
                userEntity.getHub().getId());
        applicationAmendmentRequestEntity.setProtocol(protocolEntity);
        ApplicationAmendmentRequestEntity applicationAmendment = saveApplicationAmendmentRequestEntity(applicationAmendmentRequestEntity);

        //Set Status
        applicationEvaluationEntity.setStatus(ApplicationEvaluationStatusTypeEnum.SOCCORSO.getValue());
        applicationEvaluationRepository.save(applicationEvaluationEntity);

        ApplicationEntity applicationEntity = applicationService.validateApplication(applicationId);
        applicationEntity.setStatus(ApplicationStatusTypeEnum.SOCCORSO.getValue());
        applicationRepository.save(applicationEntity);

        AssignedApplicationsEntity assignedApplicationsEntity = assignedApplicationsService.validateAssignedApplication(assignedApplicationId);
        assignedApplicationsEntity.setStatus(AssignedApplicationEnum.SOCCORSO.getValue());
        assignedApplicationsRepository.save(assignedApplicationsEntity);

        return applicationAmendment;
    }

    public ApplicationAmendmentRequestEntity saveApplicationAmendmentRequestEntity(ApplicationAmendmentRequestEntity applicationAmendmentRequestEntity){
        ApplicationAmendmentRequestEntity applicationAmendmentRequest= applicationAmendmentRequestRepository.save(applicationAmendmentRequestEntity);
        return applicationAmendmentRequest;
    }

    public ApplicationAmendmentRequestResponse convertEntityToResponse(ApplicationAmendmentRequestEntity applicationAmendmentRequestEntity){
        ApplicationAmendmentRequestResponse applicationAmendmentRequestResponse = new ApplicationAmendmentRequestResponse();
        applicationAmendmentRequestResponse.setId(applicationAmendmentRequestEntity.getId());
        Long applicationId= applicationAmendmentRequestEntity.getApplicationId();

        ApplicationEntity application = applicationService.validateApplication(applicationId);
        applicationAmendmentRequestResponse.setApplicationId(applicationId);
        applicationAmendmentRequestResponse.setCallEmail(application.getCall().getEmail());
        applicationAmendmentRequestResponse.setApplicationEvaluationId(applicationAmendmentRequestEntity.getApplicationEvaluationEntity().getId());
        applicationAmendmentRequestResponse.setNote(applicationAmendmentRequestEntity.getNote());
        applicationAmendmentRequestResponse.setStatus(ApplicationAmendmentRequestEnum.valueOf(applicationAmendmentRequestEntity.getStatus()));
        applicationAmendmentRequestResponse.setResponseDays(applicationAmendmentRequestEntity.getResponseDays());
        applicationAmendmentRequestResponse.setInternalNote(applicationAmendmentRequestEntity.getInternalNote());
        LocalDateTime startDate = applicationAmendmentRequestEntity.getStartDate();
        applicationAmendmentRequestResponse.setStartDate(startDate);

        LocalDateTime expirationDate = startDate.plus(expirationDays, ChronoUnit.DAYS);
        applicationAmendmentRequestResponse.setExpirationDate(expirationDate);

        applicationAmendmentRequestResponse.setSendEmail(applicationAmendmentRequestEntity.getIsEmail());
        applicationAmendmentRequestResponse.setSendNotification(applicationAmendmentRequestEntity.getIsNotification());
        String callName = application.getCall().getName();
        Long protocolNumber = (applicationAmendmentRequestEntity.getProtocol() != null && applicationAmendmentRequestEntity.getProtocol().getProtocolNumber() != null)
                ? applicationAmendmentRequestEntity.getProtocol().getProtocolNumber()
                : null;
        UserEntity userEntity = userService.validateUser(application.getUserId());
        String firstName = userEntity.getBeneficiary() != null ? userEntity.getBeneficiary().getFirstName() : "";
        String lastName = userEntity.getBeneficiary() != null ? userEntity.getBeneficiary().getLastName() : "";

        String beneficiaryName = (!firstName.isBlank() ? firstName : "") +
                (!lastName.isBlank() ? " " + lastName : "");

        beneficiaryName = beneficiaryName.isBlank() ? "" : beneficiaryName;
        applicationAmendmentRequestResponse.setCallName(callName);
        applicationAmendmentRequestResponse.setProtocolNumber(protocolNumber);
        applicationAmendmentRequestResponse.setBeneficiaryName(beneficiaryName);

        String formFieldsString = applicationAmendmentRequestEntity.getFormFields();
        List<String> storedFieldIds = (formFieldsString != null) ? Arrays.asList(formFieldsString.split(",")) : Collections.emptyList();
        List<ApplicationFormEntity> applicationForms = applicationFormRepository.findByApplicationId(application.getId());
        List<AmendmentFormFieldResponse> formFields = new ArrayList<>();
        for (ApplicationFormEntity formEntity : applicationForms) {
            String content = formEntity.getForm().getContent();
            List<Map<String, Object>> result = filterByName(content, "fileupload");

            List<AmendmentFormFieldResponse> matchingFields = getIdAndLabelFromResult(result).stream()
                    .filter(field -> storedFieldIds.contains(field.getFieldId()))
                    .collect(Collectors.toList());
            formFields.addAll(matchingFields);
        }
        applicationAmendmentRequestResponse.setFormFields(formFields);

        List<AmendmentFormFieldResponse> formField = formFields.stream()
                .map(field -> {
                    AmendmentFormFieldResponse responseField = new AmendmentFormFieldResponse();
                    responseField.setFieldId(field.getFieldId());
                    responseField.setLabel(field.getLabel());
                    responseField.setSelected(true);
                    return responseField;
                })
                .collect(Collectors.toList());

        applicationAmendmentRequestResponse.setFormFields(formField);

        List<ApplicationFormFieldEntity> formFieldEntities = applicationFormFieldRepository.findByApplicationFormIdIn(
                applicationForms.stream().map(ApplicationFormEntity::getId).collect(Collectors.toList())
        );

        List<ApplicationFormFieldResponseBean> fileDetailResponses = new ArrayList<>();
        for (AmendmentFormFieldResponse field : formFields) {
            for (ApplicationFormFieldEntity formFieldEntity : formFieldEntities) {
                if (formFieldEntity.getFieldId().equals(field.getFieldId()) && formFieldEntity.getFieldValue() != null) {
                    ApplicationFormFieldResponseBean responseBean = new ApplicationFormFieldResponseBean();
                    responseBean.setFieldId(formFieldEntity.getFieldId());

                    String[] documentIds = formFieldEntity.getFieldValue().split(",");
                    List<DocumentResponseBean> documentResponseBeans = new ArrayList<>();

                    for (String docId : documentIds) {
                        Long documentId = Long.valueOf(docId.trim());
                        documentRepository.findByIdAndNotDeleted(documentId).ifPresent(documentEntity -> {
                            DocumentResponseBean docBean = new DocumentResponseBean();
                            docBean.setId(documentEntity.getId());
                            docBean.setName(documentEntity.getFileName());
                            docBean.setType(DocumentTypeEnum.valueOf(documentEntity.getType()));
                            docBean.setSource(DocumentSourceTypeEnum.valueOf(documentEntity.getSource()));
                            docBean.setSourceId(documentEntity.getSourceId());
                            docBean.setFilePath(documentEntity.getFilePath());
                            docBean.setCreatedDate(documentEntity.getCreatedDate());
                            docBean.setUpdatedDate(documentEntity.getUpdatedDate());
                            documentResponseBeans.add(docBean);
                        });
                    }

                    responseBean.setFieldValue(documentResponseBeans);
                    fileDetailResponses.add(responseBean);
                }
            }
        }

        applicationAmendmentRequestResponse.setApplicationFormFields(fileDetailResponses);

        return applicationAmendmentRequestResponse;
    }

    public ApplicationAmendmentRequestEntity validateApplicationAmendmentRequest(Long id) {
        return applicationAmendmentRequestRepository.findByIdAndIsDeletedFalse(id)
                .orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
                        Translator.toLocale(GepafinConstant.APPLICATION_AMENDMENT_NOT_FOUND_MSG)));
    }

    public void deleteById(Long id) {
        log.info("Deleting assigned application with ID: {}", id);
        ApplicationAmendmentRequestEntity applicationAmendmentRequestEntity= validateApplicationAmendmentRequest(id);
        applicationAmendmentRequestEntity.setIsDeleted(true);
        saveApplicationAmendmentRequestEntity(applicationAmendmentRequestEntity);
        log.info(" Application amendment deleted with ID: {}", id);
    }

    public ApplicationAmendmentRequestResponse getApplicationAmendmentRequestById(Long id) {
        log.info("Fetching application amendment with ID: {}", id);
        ApplicationAmendmentRequestEntity applicationAmendmentRequestEntity = validateApplicationAmendmentRequest(id);
        ApplicationAmendmentRequestResponse response = convertEntityToResponse(applicationAmendmentRequestEntity);
        log.info("Application Amendment fetched successfully by ID: {}", response);
        return response;
    }

    public List<ApplicationAmendmentRequestResponse> getAllApplicationAmendmentRequest(HttpServletRequest request,Long userId) {
        if(validator.checkIsPreInstructor() && userId == null) {
            throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.USER_ID_NOT_NULL_MSG));
        }
        if(userId != null) {
            validator.validatePreInstructor(request, userId);
        }
        Specification<ApplicationAmendmentRequestEntity> spec = search(userId);
        List<ApplicationAmendmentRequestEntity> applicationAmendmentRequestEntities =
                applicationAmendmentRequestRepository.findAll(spec);

        return applicationAmendmentRequestEntities.stream()
                .map(this::convertEntityToResponse)
                .collect(Collectors.toList());
    }

    private Specification<ApplicationAmendmentRequestEntity> search(Long userId) {
        return (root, query, builder) -> {
            Predicate predicate = builder.isFalse(root.get("isDeleted")); // Only non-deleted records

            if (userId != null) {
                Join<Object, Object> evaluationJoin = root.join("applicationEvaluationEntity");
                predicate = builder.and(predicate, builder.equal(evaluationJoin.get("userId"), userId));
            }

            return predicate; // Return final predicate
        };
    }


    public ApplicationAmendmentRequestResponse updateApplicationAmendment(
            Long id, ApplicationAmendmentRequestBean updateRequest) {

        log.info("Updating application amendement with ID: {}", id);
        ApplicationAmendmentRequestEntity existingApplicationAmendment = validateApplicationAmendmentRequest(id);

        setIfUpdated(existingApplicationAmendment::getNote, existingApplicationAmendment::setNote, updateRequest.getNote());
        if (updateRequest.getApplicationFormFields() != null) {
            updateApplicationFormFields(existingApplicationAmendment, updateRequest.getApplicationFormFields());
        }
        existingApplicationAmendment.setUpdatedDate(DateTimeUtil.DateServerToUTC(LocalDateTime.now()));

        ApplicationAmendmentRequestEntity updatedApplicationAmendment = saveApplicationAmendmentRequestEntity(existingApplicationAmendment);
        ApplicationAmendmentRequestResponse response = convertEntityToResponse(updatedApplicationAmendment);
        log.info("Application Amendment updated successfully: {}", response);
        return response;
    }

    private void updateApplicationFormFields(ApplicationAmendmentRequestEntity applicationAmendment, ApplicationFormFieldRequestBean updatedFormField) {
        if (updatedFormField.getFieldValue() == null || "".equals(updatedFormField.getFieldValue().toString().trim())) {
            List<ApplicationFormEntity> applicationForms = applicationFormRepository.findByApplicationId(applicationAmendment.getApplicationId());

            boolean fieldUpdated = false;

            for (ApplicationFormEntity applicationForm : applicationForms) {
                Optional<ApplicationFormFieldEntity> formFieldEntityOptional = applicationFormFieldRepository
                        .findByApplicationFormIdAndFieldId(applicationForm.getId(), updatedFormField.getFieldId());

                if (formFieldEntityOptional.isPresent()) {
                    ApplicationFormFieldEntity formEntity = formFieldEntityOptional.get();
                    formEntity.setFieldValue(null); // Set field value to null
                    applicationFormFieldRepository.save(formEntity);
                    log.info("Set field value to null for application ID {} and field ID {}", applicationAmendment.getApplicationId(), updatedFormField.getFieldId());
                    fieldUpdated = true;
                    break;
                }
            }

            if (!fieldUpdated) {
                throw new CustomValidationException(Status.NOT_FOUND, "No ApplicationFormField found for application ID " + applicationAmendment.getApplicationId() + " and field ID " + updatedFormField.getFieldId());
            }
            return;
        }

        List<String> documentIds;

        if (updatedFormField.getFieldValue() instanceof String && updatedFormField.getFieldValue() != null) {
            documentIds = Arrays.asList(((String) updatedFormField.getFieldValue()).split(","));
        } else {
            log.warn("Expected fieldValue as a comma-separated String but got: {}", updatedFormField.getFieldValue());
            return;
        }

        List<String> validDocumentIds = new ArrayList<>();
        for (String documentId : documentIds) {
            try {
                DocumentEntity documentEntity = documentService.validateDocument(Long.parseLong(documentId.trim()));
                if (documentEntity != null) {
                    validDocumentIds.add(documentId.trim());
                } else {
                    log.warn("Document with ID {} does not exist. Skipping this ID.", documentId);
                }
            } catch (NumberFormatException e) {
                log.error("Invalid document ID format: {}. Error: {}", documentId, e.getMessage());
            }
        }

        if (!validDocumentIds.isEmpty()) {
            List<ApplicationFormEntity> applicationForms = applicationFormRepository.findByApplicationId(applicationAmendment.getApplicationId());

            boolean fieldUpdated = false;

            for (ApplicationFormEntity applicationForm : applicationForms) {
                Optional<ApplicationFormFieldEntity> formFieldEntityOptional = applicationFormFieldRepository
                        .findByApplicationFormIdAndFieldId(applicationForm.getId(), updatedFormField.getFieldId());

                if (formFieldEntityOptional.isPresent()) {
                    ApplicationFormFieldEntity formEntity = formFieldEntityOptional.get();
                    formEntity.setFieldValue(String.join(",", validDocumentIds));
                    applicationFormFieldRepository.save(formEntity);
                    log.info("Updated field value for application ID {} and field ID {} with document IDs {}",
                            applicationAmendment.getApplicationId(), updatedFormField.getFieldId(), String.join(",", validDocumentIds));
                    fieldUpdated = true;
                    break;
                }
            }

            if (!fieldUpdated) {
                throw new CustomValidationException(Status.NOT_FOUND,"No ApplicationFormField found for application ID {} and field ID {}. Skipping update.");
            }
        } else {
            log.warn("No valid document IDs found for update. Skipping field ID {}", updatedFormField.getFieldId());
        }
    }



    public List<ApplicationAmendmentRequestResponse> getAllAmendmentRequestByBeneficiaryId(Long beneficiaryId) {
        UserEntity userEntity = userService.validateUser(beneficiaryId);
        List<ApplicationAmendmentRequestEntity> entities =
                applicationAmendmentRequestRepository.findByUserId(beneficiaryId);

        return entities.stream()
                .map(this::convertEntityToResponse)
                .collect(Collectors.toList());
    }
  
    public ApplicationAmendmentRequestResponse closeAmendmentRequest(Long id, CloseAmendmentRequest closeAmendmentRequest){
        log.info("Closing application amendement with ID: {}", id);
        ApplicationAmendmentRequestEntity existingApplicationAmendment = validateApplicationAmendmentRequest(id);

        setIfUpdated(existingApplicationAmendment::getInternalNote, existingApplicationAmendment::setInternalNote, closeAmendmentRequest.getInternalNote());
        setIfUpdated(existingApplicationAmendment::getStatus, existingApplicationAmendment::setStatus, ApplicationAmendmentRequestEnum.CLOSE.getValue());

        ApplicationAmendmentRequestEntity updatedApplicationAmendment = saveApplicationAmendmentRequestEntity(existingApplicationAmendment);
        ApplicationAmendmentRequestResponse response = convertEntityToResponse(updatedApplicationAmendment);
        log.info("Application Amendment closed successfully: {}", response);
        return response;
    }

    public ApplicationAmendmentRequestResponse extendResponseDays(Long id, Long newResponseDays) {
        ApplicationAmendmentRequestEntity request = applicationAmendmentRequestRepository.findByIdAndIsDeletedFalse(id)
                .orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
                        Translator.toLocale(GepafinConstant.APPLICATION_AMENDMENT_NOT_FOUND_MSG)));

        if (newResponseDays != null && newResponseDays > 0) {
            Long currentResponseDays = request.getResponseDays() != null ? request.getResponseDays() : 0L;
            request.setResponseDays(currentResponseDays + newResponseDays);
            applicationAmendmentRequestRepository.save(request);
        }
        return convertEntityToResponse(request);
    }

      public List<ApplicationAmendmentRequestResponse> getAmendmentByApplicationId(HttpServletRequest request, Long applicationId,List<ApplicationAmendmentRequestEnum> statuses) {
        log.info("Fetching the Amendment data from application id {}", applicationId);
        ApplicationEntity application = applicationService.validateApplication(applicationId);
          List<ApplicationAmendmentRequestEntity> applicationAmendmentRequestEntity=applicationAmendmentRequestRepository.findByApplicationIdAndIsDeletedFalse(applicationId);
        if(statuses!=null && !statuses.isEmpty()) {
            List<String> statusStrings = statuses.stream().map(Enum::name).collect(Collectors.toList());
         applicationAmendmentRequestEntity = applicationAmendmentRequestRepository.findByApplicationIdAndStatusInAndIsDeletedFalse(application.getId(), statusStrings);
        } if(!applicationAmendmentRequestEntity.isEmpty()) {
              ApplicationAmendmentRequestEntity applicationAmendmentRequest=applicationAmendmentRequestEntity.get(0);
              Optional<ApplicationEvaluationEntity> entityOptional = applicationEvaluationRepository.findByIdAndIsDeletedFalse(applicationAmendmentRequest.getApplicationEvaluationEntity().getId());
              if (entityOptional.isPresent()) {
					if (Boolean.FALSE.equals(validator.checkIsBeneficiary())) {
						validator.validatePreInstructor(request, entityOptional.get().getUserId());
					} else {
						validator.validateUserId(request, entityOptional.get().getAssignedApplicationsEntity().getApplication().getUserId());						
					}
              }}
        List <ApplicationAmendmentRequestResponse> response=new ArrayList<>();
        if(applicationAmendmentRequestEntity!=null) {
            response= applicationAmendmentRequestEntity.stream()
                    .map(this::convertEntityToResponse)
                    .collect(Collectors.toList());
        }
        return response;
    }
    public ApplicationAmendmentRequestResponse updateApplicationAmendmentStatus(
            Long id,ApplicationAmendmentRequestEnum statusTypeEnum) {

        log.info("Updating application amendement with status: {}", id);
        ApplicationAmendmentRequestEntity existingApplicationAmendment = validateApplicationAmendmentRequest(id);
        if(Boolean.TRUE.equals(existingApplicationAmendment.getStatus().equals(ApplicationAmendmentRequestEnum.AWAITING.getValue())) && Boolean.TRUE.equals(statusTypeEnum.equals(ApplicationAmendmentRequestEnum.RESPONSE_RECEIVED))){
            existingApplicationAmendment.setStatus(ApplicationAmendmentRequestEnum.RESPONSE_RECEIVED.getValue());
            existingApplicationAmendment.setUpdatedDate(DateTimeUtil.DateServerToUTC(LocalDateTime.now()));
            applicationAmendmentRequestRepository.save(existingApplicationAmendment);
        }
        ApplicationAmendmentRequestResponse response = convertEntityToResponse(existingApplicationAmendment);
        log.info("Amendment status updated successfully: {}", response);
        return response;
    }
    public void sendReminderEmail(Long amendmentId) {
        ApplicationAmendmentRequestEntity amendment = applicationAmendmentRequestRepository.findByIdAndIsDeletedFalse(amendmentId)
                .orElseThrow(() -> new ResourceNotFoundException(Status.NOT_FOUND,
                        Translator.toLocale(GepafinConstant.APPLICATION_AMENDMENT_NOT_FOUND_MSG)));

        Optional<ApplicationEvaluationEntity> entityOptional = applicationEvaluationRepository.findByIdAndIsDeletedFalse(amendment.getApplicationEvaluationEntity().getId());
        if (entityOptional.isPresent()) {
            ApplicationEntity applicationEntity = applicationService.validateApplication(entityOptional.get().getApplicationId());
            UserEntity beneficiaryUser = userService.validateUser(applicationEntity.getUserId());
            HubEntity hub = hubService.valdateHub(applicationEntity.getHubId());
            SystemEmailTemplateResponse emailTemplate = systemEmailTemplatesService
                    .retrieveTemplateByTypeAndCall(SystemEmailTemplatesEntityTypeEnum.AMENDMENT_REMINDER, hub, null);
            String subject = prepareSubject(emailTemplate, amendment, beneficiaryUser);
            String body = prepareBody(emailTemplate, amendment, beneficiaryUser);
            String email = beneficiaryUser.getEmail();
            if (Boolean.TRUE.equals(amendment.getIsEmail())&&email != null && !email.isEmpty()) {
                emailNotificationDao.sendMail(hub.getId(), subject, body, List.of(email));
            } else {
                throw new CustomValidationException(Status.BAD_REQUEST, Translator.toLocale(GepafinConstant.BENEFICIARY_EMAIL_NOT_FOUND_MSG));
            }
        }
    }

    private String prepareSubject(SystemEmailTemplateResponse template, ApplicationAmendmentRequestEntity amendment, UserEntity beneficiary) {
        Map<String, String> subjectPlaceholders = new HashMap<>();
        String firstName = beneficiary.getFirstName() != null ? beneficiary.getFirstName() : "";
        String lastName = beneficiary.getLastName() != null ? beneficiary.getLastName() : "";
        String beneficiaryName = String.join(" ", firstName, lastName).trim();

        subjectPlaceholders.put("{{amendment_id}}", amendment.getId().toString());
        subjectPlaceholders.put("{{beneficiary_name}}", beneficiaryName);

        return Utils.replacePlaceholders(template.getSubject(), subjectPlaceholders);
    }

    private String prepareBody(SystemEmailTemplateResponse template, ApplicationAmendmentRequestEntity amendment, UserEntity beneficiary) {
        Map<String, String> bodyPlaceholders = new HashMap<>();
        bodyPlaceholders.put("{{amendment_id}}", amendment.getId().toString());

        if (amendment.getStartDate() != null && amendment.getResponseDays() != null) {

            LocalDateTime dueDate = amendment.getStartDate().plusDays(amendment.getResponseDays());
            bodyPlaceholders.put("{{amendment_due_date}}", DateTimeUtil.formatLocalDateTime(dueDate, GepafinConstant.DD_MM_YYYY));
        } else {

            bodyPlaceholders.put("{{amendment_due_date}}", "Not available");
        }

        return Utils.replacePlaceholders(template.getHtmlContent(), bodyPlaceholders);
    }


}