# QuestionReplyContentManager.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:
     * "http://www.silverpeas.org/docs/core/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.questionreply.service;

    import org.silverpeas.components.questionreply.QuestionReplyException;
    import org.silverpeas.components.questionreply.model.Question;
    import org.silverpeas.core.ResourceReference;
    import org.silverpeas.core.annotation.Service;
    import org.silverpeas.core.contribution.contentcontainer.content.AbstractSilverpeasContentManager;
    import org.silverpeas.core.contribution.contentcontainer.content.ContentManagerException;
    import org.silverpeas.core.contribution.contentcontainer.content.SilverContentVisibility;
    import org.silverpeas.core.contribution.model.Contribution;
    import org.silverpeas.core.persistence.jdbc.bean.IdPK;
    import org.silverpeas.kernel.logging.SilverLogger;

    import java.sql.Connection;
    import java.util.Collections;
    import java.util.List;
    import java.util.Optional;
    import java.util.stream.Collectors;

    /**
     * The questionReply implementation of SilverpeasContentManager.
     */
    @Service
    public class QuestionReplyContentManager extends AbstractSilverpeasContentManager {

      private static final String CONTENT_ICON_FILE_NAME = "questionReplySmall.gif";

      /**
       * Hidden constructor as this implementation must be GET by CDI mechanism.
       */
      protected QuestionReplyContentManager() {
      }

      @Override
      protected String getContentIconFileName(final String componentInstanceId) {
        return CONTENT_ICON_FILE_NAME;
      }

      @Override
      protected Optional<Contribution> getContribution(final String resourceId,
          final String componentInstanceId) {
        final List<? extends Contribution> contributions = getAccessibleContributions(
            Collections.singletonList(new ResourceReference(resourceId, componentInstanceId)), null);
        return contributions.isEmpty() ? Optional.empty() : Optional.of(contributions.get(0));
      }

      @Override
      protected List<Contribution> getAccessibleContributions(
          final List<ResourceReference> resourceReferences, final String currentUserId) {
        try {
          final List<String> resourceIds = resourceReferences.stream()
              .map(ResourceReference::getLocalId)
              .collect(Collectors.toList());
          return QuestionManagerProvider.getQuestionManager().getQuestionsByIds(resourceIds).stream()
              .map(q -> new QuestionHeader(q, q.getInstanceId(), q.getCreationDate(), q.getCreatorId()))
              .collect(Collectors.toList());
        } catch (QuestionReplyException e) {
          // skip unknown and ill formed id.
          SilverLogger.getLogger(this).error(e);
          return Collections.emptyList();
        }
      }

      /**
       * Add a new content. It is registered to contentManager service
       * @throws ContentManagerException on technical error.
       */
      protected void createSilverContent(Connection con, Question question) throws ContentManagerException {
        SilverContentVisibility scv = new SilverContentVisibility(isVisible(question));
        getContentManager().addSilverContent(con, question.getPK().getId(), question.getInstanceId(),
            question.getCreatorId(), scv);
      }

      /**
       * update the visibility attributes of the content. Here, the type of content is a Question.
       * @param question the content
       * @throws ContentManagerException on technical error.
       */
      protected void updateSilverContentVisibility(Question question) throws ContentManagerException {
        int silverContentId = getContentManager()
            .getSilverContentId(question.getPK().getId(), question.getPK().getComponentName());
        SilverContentVisibility scv = new SilverContentVisibility(isVisible(question));
        getContentManager().updateSilverContentVisibilityAttributes(scv, silverContentId);
      }

      /**
       * delete a content. It is registered to contentManager service
       * @param con a Connection
       * @param pk the identity of the content to unregister
       * @throws ContentManagerException on technical error.
       */
      protected void deleteSilverContent(Connection con, IdPK pk) throws ContentManagerException {
        deleteSilverContent(con, pk.getId(), pk.getComponentName());
      }

      private boolean isVisible(Question question) {
        return question.getPublicReplyNumber() != 0;
      }
    }