/**
    * Copyright 2005-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * http://www.opensource.org/licenses/ecl2.php
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.rice.krms.impl.authorization;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.kim.api.identity.Person;
  import org.kuali.rice.krad.document.DocumentAuthorizerBase;
  import org.kuali.rice.krad.maintenance.MaintenanceDocument;
  import org.kuali.rice.krad.maintenance.MaintenanceDocumentAuthorizer;
  import org.kuali.rice.krms.api.KrmsConstants;
  import org.kuali.rice.krms.impl.repository.KrmsRepositoryServiceLocator;
  import org.kuali.rice.krms.impl.ui.AgendaEditor;
  
  import java.util.HashSet;
  import java.util.Set;
  
  public class AgendaEditorAuthorizer extends DocumentAuthorizerBase implements MaintenanceDocumentAuthorizer {
  
      @Override
      public boolean canCreate(Class boClass, Person user) {
          // The context is unknown on create so we need to let the user in
          // TODO: maybe restrict it so only user that have rights to some contexts are allowed to create agendas.
          return true;
      }
  
      @Override
      public boolean canMaintain(Object dataObject, Person user) {
          AgendaEditor agendaEditor = (AgendaEditor) dataObject;
          return getAgendaAuthorizationService().isAuthorized(KrmsConstants.MAINTAIN_KRMS_AGENDA, agendaEditor.getAgenda().getContextId());
      }
  
      @Override
      public boolean canCreateOrMaintain(MaintenanceDocument maintenanceDocument, Person user) {
          AgendaEditor agendaEditor = (AgendaEditor) maintenanceDocument.getOldMaintainableObject().getDataObject();
          if (StringUtils.isEmpty(agendaEditor.getAgenda().getContextId())) {
              // If this is a new document use the new contextId instead since an old one does not exist.
              agendaEditor  = (AgendaEditor) maintenanceDocument.getNewMaintainableObject().getDataObject();
              return getAgendaAuthorizationService().isAuthorized(KrmsConstants.MAINTAIN_KRMS_AGENDA, agendaEditor.getAgenda().getContextId());
          } else {
              return getAgendaAuthorizationService().isAuthorized(KrmsConstants.MAINTAIN_KRMS_AGENDA, agendaEditor.getAgenda().getContextId());
          }
      }
  
      private AgendaAuthorizationService getAgendaAuthorizationService() {
          return KrmsRepositoryServiceLocator.getAgendaAuthorizationService();
      }
  }