# ReservationService.java

    /*
     * Copyright (C) 2000 - 2024 Silverpeas
     *
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the
     * License, or (at your option) any later version.
     *
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception. You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "https://www.silverpeas.org/legal/floss_exception.html"
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
     * GNU Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program. If not, see <https://www.gnu.org/licenses/>.
     */
    package org.silverpeas.components.resourcesmanager.service;

    import org.silverpeas.components.resourcesmanager.model.Reservation;
    import org.silverpeas.components.resourcesmanager.model.ReservedResource;
    import org.silverpeas.components.resourcesmanager.model.Resource;
    import org.silverpeas.components.resourcesmanager.model.ResourceStatus;
    import org.silverpeas.components.resourcesmanager.repository.ReservationRepository;
    import org.silverpeas.components.resourcesmanager.repository.ReservedResourceRepository;
    import org.silverpeas.components.resourcesmanager.repository.ResourceRepository;
    import org.silverpeas.components.resourcesmanager.repository.ResourceValidatorRepository;
    import org.silverpeas.core.annotation.Service;

    import jakarta.inject.Inject;
    import jakarta.transaction.Transactional;
    import java.util.List;

    /**
     * @author ehugonnet
     */
    @Service
    public class ReservationService {

      @Inject
      private ReservationRepository repository;

      @Inject
      private ReservedResourceRepository reservedResourceRepository;

      @Inject
      private ResourceRepository resourceRepository;

      @Inject
      private ResourceValidatorRepository resourceValidatorRepository;

      @Transactional
      public void createReservation(Reservation reservation, List<Long> resourceIds) {
        reservation.setStatus(ResourceStatus.STATUS_VALIDATE);
        repository.save(reservation);
        for (Long resourceId : resourceIds) {
          ReservedResource reservedResource = new ReservedResource();
          reservedResource.setReservedResourceId(Long.toString(resourceId), reservation.getId());
          Resource resource = resourceRepository.getById(Long.toString(resourceId));
          if (!resource.getManagers().isEmpty()) {
            if (resourceValidatorRepository
                .getResourceValidator(resourceId, Long.parseLong(reservation.getUserId())) == null) {
              reservedResource.setStatus(ResourceStatus.STATUS_FOR_VALIDATION);
            } else {
              reservedResource.setStatus(ResourceStatus.STATUS_VALIDATE);
            }
          } else {
            reservedResource.setStatus(reservation.getStatus());
          }
          reservedResourceRepository.save(reservedResource);
        }
        reservation.setStatus(computeReservationStatus(reservation));
        repository.save(reservation);
      }

      public String computeReservationStatus(Reservation reservation) {
        boolean validated = true;
        List<ReservedResource> reservedResources = reservedResourceRepository.
            findAllReservedResourcesForReservation(reservation.getIdAsLong());
        for (ReservedResource reservedResource : reservedResources) {
          String status = reservedResource.getStatus();
          if (ResourceStatus.STATUS_FOR_VALIDATION.equals(status)) {
            validated = false;
          }
          if (ResourceStatus.STATUS_REFUSED.equals(status)) {
            return ResourceStatus.STATUS_REFUSED;
          }
        }
        if (!validated) {
          return ResourceStatus.STATUS_FOR_VALIDATION;
        }
        return ResourceStatus.STATUS_VALIDATE;
      }

      @Transactional
      public void updateReservation(Reservation reservation) {
        repository.saveAndFlush(reservation);
      }

      public Reservation getReservation(long id) {
        return repository.getById(Long.toString(id));
      }

      @Transactional
      public void deleteReservation(long id) {
        reservedResourceRepository.deleteAllReservedResourcesForReservation(id);
        repository.deleteById(Long.toString(id));
      }

      public List<Reservation> findAllReservations(String instanceId) {
        return repository.findAllReservations(instanceId);
      }

      public List<Reservation> findAllReservationsForUser(String instanceId, Integer userId) {
        return repository.findAllReservationsForUser(instanceId, userId);
      }

      public List<Reservation> findAllReservationsForValidation(String instanceId, Long userId,
          String startPeriod, String endPeriod) {
        return repository.findAllReservationsForValidation(instanceId, userId, startPeriod, endPeriod);
      }

      /**
       * Finds all reservations related to the given user on the given period.
       * If user parameter (userId) is not defined, the reservations returned are not filtered by user.
       * @param instanceId resource manager instance id
       * @param userId unique identifier of the user
       * @param startPeriod the start date of the period
       * @param endPeriod the end date of the period
       * @return a list of reservations
       */
      public List<Reservation> findAllReservationsInRange(String instanceId, Integer userId,
          String startPeriod, String endPeriod) {
        if (userId == null) {
          return repository.findAllReservationsInRange(instanceId, startPeriod, endPeriod);
        }
        return repository.findAllReservationsForUserInRange(instanceId, userId, startPeriod, endPeriod);
      }

      /**
       * Finds all reservations related to the given user on the given period and for which at least
       * one
       * resource of the given category is attached.
       * If user parameter (userId) is not defined, the reservations returned are not filtered by user.
       * @param instanceId the resource manager instance identifier
       * @param userId the unique identifier of the user
       * @param categoryId the unique identifier of the category
       * @param startPeriod the start date of the period
       * @param endPeriod the end date of the period
       * @return a list of reservations.
       */
      public List<Reservation> findAllReservationsForCategoryInRange(final String instanceId,
          Integer userId, Long categoryId, String startPeriod, String endPeriod) {
        if (userId == null) {
          return repository
              .findAllReservationsForCategoryInRange(instanceId, categoryId, startPeriod, endPeriod);
        }
        return repository
            .findAllReservationsForUserAndCategoryInRange(instanceId, userId, categoryId, startPeriod,
                endPeriod);
      }

      /**
       * Finds all reservations related to the given user on the given period and for which the given
       * resource is attached.
       * If user parameter (userId) is not defined, the reservations returned are not filtered by user.
       * @param instanceId the resource manager instance identifier.
       * @param userId the unique identifier of the user
       * @param resourceId the unique identifier of the resource
       * @param startPeriod the start date of the period
       * @param endPeriod the end date of the period
       * @return a list of reservations.
       */
      public List<Reservation> findAllReservationsForResourceInRange(final String instanceId,
          Integer userId, Long resourceId, String startPeriod, String endPeriod) {
        if (userId == null) {
          return repository
              .findAllReservationsForResourceInRange(instanceId, resourceId, startPeriod, endPeriod);
        }
        return repository
            .findAllReservationsForUserAndResourceInRange(instanceId, userId, resourceId, startPeriod,
                endPeriod);
      }
    }