# KmeliaPublicationHelper.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.kmelia;

    import org.silverpeas.components.kmelia.service.KmeliaHelper;
    import org.silverpeas.core.admin.service.OrganizationControllerProvider;
    import org.silverpeas.core.admin.user.model.SilverpeasRole;
    import org.silverpeas.core.admin.user.model.User;
    import org.silverpeas.core.node.model.NodePK;
    import org.silverpeas.kernel.util.StringUtil;

    public class KmeliaPublicationHelper {

      private KmeliaPublicationHelper() {
      }

      public static boolean isUserConsideredAsOwner(String instanceId, String currentUserId,
          String profile, User ownerDetail) {
        if (hasWritePrivilege(currentUserId, profile, ownerDetail)) {
          return true;
        } else if ("writer".equals(profile)) {
          // check if co-writing is enabled
          return StringUtil.getBooleanValue(
              getParameterValue(instanceId, InstanceParameters.coWriting));
        }
        return false;
      }

      public static boolean isRemovable(String instanceId, String currentUserId, String profile,
          User ownerDetail) {
        if (hasWritePrivilege(currentUserId, profile, ownerDetail)) {
          boolean removeOnlyForAdmin = StringUtil.getBooleanValue(
              getParameterValue(instanceId, InstanceParameters.suppressionOnlyForAdmin));
          return !removeOnlyForAdmin || SilverpeasRole.ADMIN.getName().equals(profile);
        }
        return false;
      }

      public static boolean isCanBeCut(String instanceId, String currentUserId, String profile,
          User ownerDetail) {
        return !KmeliaHelper.isKmax(instanceId) &&
            isUserConsideredAsOwner(instanceId, currentUserId, profile, ownerDetail);
      }

      public static boolean isCreationAllowed(NodePK pk, String profile) {
        boolean publicationsInTopic = !pk.isRoot() || (pk.isRoot() &&
            (isPublicationsOnRootAllowed(pk.getInstanceId()) || !isTreeEnabled(pk.getInstanceId())));
        return !SilverpeasRole.USER.isInRole(profile) && publicationsInTopic;
      }

      public static boolean isPublicationsOnRootAllowed(String instanceId) {
        String parameterValue = getParameterValue(instanceId, InstanceParameters.nbPubliOnRoot);
        if (StringUtil.isDefined(parameterValue)) {
          return Integer.parseInt(parameterValue) == 0;
        }
        return true;
      }

      public static boolean isTreeEnabled(String instanceId) {
        String param = getParameterValue(instanceId, InstanceParameters.treeEnabled);
        if (!StringUtil.isDefined(param)) {
          return true;
        }
        return "0".equals(param) || "1".equals(param);
      }

      private static String getParameterValue(String instanceId, String name) {
        return OrganizationControllerProvider.getOrganisationController()
            .getComponentParameterValue(instanceId, name);
      }

      private static boolean hasWritePrivilege(String currentUserId, String profile, User owner) {
        SilverpeasRole role = SilverpeasRole.fromString(profile);
        return role == SilverpeasRole.ADMIN || role == SilverpeasRole.PUBLISHER ||
            role == SilverpeasRole.SUPERVISOR ||
            (owner != null && currentUserId.equals(owner.getId()) && role == SilverpeasRole.WRITER);
      }
    }