package net.gepafin.tendermanagement.service.impl;

import jakarta.servlet.http.HttpServletRequest;
import net.gepafin.tendermanagement.config.Translator;
import net.gepafin.tendermanagement.constants.GepafinConstant;
import net.gepafin.tendermanagement.dao.ApplicationEvaluationDao;

import net.gepafin.tendermanagement.entities.ApplicationEvaluationEntity;
import net.gepafin.tendermanagement.entities.AssignedApplicationsEntity;
import net.gepafin.tendermanagement.entities.UserEntity;
import net.gepafin.tendermanagement.enums.ApplicationEvaluationStatusTypeEnum;
import net.gepafin.tendermanagement.model.request.ApplicationEvaluationRequest;
import net.gepafin.tendermanagement.model.response.ApplicationEvaluationResponse;

import net.gepafin.tendermanagement.repositories.AssignedApplicationsRepository;
import net.gepafin.tendermanagement.service.ApplicationEvaluationService;
import net.gepafin.tendermanagement.util.Validator;
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.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Collections;
import java.util.List;
import java.util.Optional;

@Service
public class ApplicationEvaluationServiceImpl implements ApplicationEvaluationService {

    @Autowired
    private ApplicationEvaluationDao applicationEvaluationDao;
    @Autowired
    private Validator validator;
    @Autowired
    private AssignedApplicationsRepository assignedApplicationsRepository;

    @Override
    @Transactional(rollbackFor = Exception.class)
    public ApplicationEvaluationResponse createOrUpdateApplicationEvaluation(HttpServletRequest request, ApplicationEvaluationRequest req,Long assignedApplicationsId) {
        AssignedApplicationsEntity assignedApplication = assignedApplicationsRepository.findByIdAndIsDeletedFalse(assignedApplicationsId).orElseThrow(()->
                new ResourceNotFoundException(Status.NOT_FOUND,Translator.toLocale(GepafinConstant.ASSIGNED_APPLICATION_NOT_FOUND_MSG)));
        UserEntity user=validator.validatePreInstructor(request,assignedApplication.getUserId());
        return applicationEvaluationDao.createOrUpdateApplicationEvaluation(user,req,assignedApplication.getId());
    }

    @Override
    @Transactional(readOnly = true)
    public List<ApplicationEvaluationResponse> getApplicationEvaluationByApplicationId(
            HttpServletRequest request, Long applicationId, Long assignedApplicationId) {
        if (applicationId == null && assignedApplicationId == null) {
            throw new CustomValidationException(
                    Status.BAD_REQUEST,
                    Translator.toLocale(GepafinConstant.EITHER_APPLICATION_OR_ASSIGNED_APPLICATION_ID_REQUIRED_MSG)
            );
        }
        AssignedApplicationsEntity assignedApplications;

        if (applicationId != null && assignedApplicationId != null) {
            assignedApplications = assignedApplicationsRepository
                    .findByApplicationIdAndAssignedApplicationId(applicationId, assignedApplicationId)
                    .orElseThrow(() -> new CustomValidationException(
                            Status.BAD_REQUEST,
                            Translator.toLocale(GepafinConstant.ASSIGNED_APPLICATION_NOT_FOUND_WITH_ID_MSG)
                    ));
        } else if (assignedApplicationId != null) {
            assignedApplications = assignedApplicationsRepository
                    .findByAssignedApplicationId(assignedApplicationId)
                    .orElseThrow(() -> new CustomValidationException(
                            Status.BAD_REQUEST,
                            Translator.toLocale(GepafinConstant.ASSIGNED_APPLICATION_NOT_FOUND_WITH_ID_MSG)
                    ));
        } else {
            List<AssignedApplicationsEntity> assignedApplicationsList = assignedApplicationsRepository
                    .findAllByApplicationId(applicationId);

            if (assignedApplicationsList.isEmpty()) {
                throw new CustomValidationException(
                        Status.BAD_REQUEST,
                        Translator.toLocale(GepafinConstant.ASSIGNED_APPLICATION_NOT_FOUND_WITH_ID_MSG)
                );
            }

            assignedApplications = assignedApplicationsList.get(0);
        }

        UserEntity user = validator.validatePreInstructor(request, assignedApplications.getUserId());
        if (applicationId != null && assignedApplicationId == null) {
            return applicationEvaluationDao.getApplicationEvaluationByApplicationId(user, assignedApplications.getApplication().getId(), null);
        }

        if (applicationId != null && assignedApplicationId != null) {
            return applicationEvaluationDao.getApplicationEvaluationByApplicationId(user, assignedApplications.getApplication().getId(), assignedApplications.getId());
        }
        return applicationEvaluationDao.getApplicationEvaluationByApplicationId(user, null, assignedApplications.getId());
    }


    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deleteApplicationEvaluation(HttpServletRequest request,Long id) {
        validator.getUserIdFromToken(request);
        applicationEvaluationDao.deleteById(id);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public ApplicationEvaluationResponse updateApplicationEvaluationStatus(HttpServletRequest request, Long assignedApplicationId) {
        AssignedApplicationsEntity assignedApplication = assignedApplicationsRepository.findByIdAndIsDeletedFalse(assignedApplicationId).orElseThrow(()->
                new ResourceNotFoundException(Status.NOT_FOUND,Translator.toLocale(GepafinConstant.ASSIGNED_APPLICATION_NOT_FOUND_MSG)));
        validator.validatePreInstructor(request,assignedApplication.getUserId());
        return applicationEvaluationDao.updateApplicationEvaluationStatus(assignedApplication.getApplication(),assignedApplication);

    }

    @Override
    public ApplicationEvaluationEntity validateApplicationEvaluation(Long applicationEvaluationId) {
        return applicationEvaluationDao.validateApplicationEvaluation(applicationEvaluationId);
    }
}