/**
    * Copyright 2005-2011 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.kew.impl.peopleflow;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
  import org.kuali.rice.core.api.uif.RemotableAttributeField;
  import org.kuali.rice.kew.api.KewApiServiceLocator;
  import org.kuali.rice.kew.api.peopleflow.PeopleFlowDefinition;
  import org.kuali.rice.kew.api.repository.type.KewTypeDefinition;
  import org.kuali.rice.kew.framework.peopleflow.PeopleFlowTypeService;
  import org.kuali.rice.krad.maintenance.MaintainableImpl;
  import org.kuali.rice.krad.uif.container.Container;
  import org.kuali.rice.krad.uif.view.View;
  import org.kuali.rice.krad.web.form.MaintenanceForm;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Custom view helper for the people flow maintenance document to retrieve the type attribute remotable fields
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class PeopleFlowMaintainableImpl extends MaintainableImpl {
  
      /**
       * Invokes the {@link org.kuali.rice.kew.api.repository.type.KewTypeRepositoryService} to retrieve the remotable
       * field definitions for the attributes associated with the selected type
       *
       * @param view - view instance
       * @param model - object containing the form data, from which the selected type will be pulled
       * @param container - container that holds the remotable fields
       * @return List<RemotableAttributeField> instances for the type attributes, or empty list if not attributes exist
       */
      public List<RemotableAttributeField> retrieveTypeAttributes(View view, Object model, Container container) {
          List<RemotableAttributeField> remoteFields = new ArrayList<RemotableAttributeField>();
  
          PeopleFlowBo peopleFlow =
                  (PeopleFlowBo) ((MaintenanceForm) model).getDocument().getNewMaintainableObject().getDataObject();
  
          // retrieve the type service and invoke to get the remotable field definitions
          String typeId = peopleFlow.getTypeId();
          if (StringUtils.isNotBlank(typeId)) {
              KewTypeDefinition typeDefinition = KewApiServiceLocator.getKewTypeRepositoryService().getTypeById(typeId);
              PeopleFlowTypeService peopleFlowTypeService = GlobalResourceLoader.<PeopleFlowTypeService>getService(
                      typeDefinition.getServiceName());
              remoteFields = peopleFlowTypeService.getAttributeFields(typeId);
          }
  
          return remoteFields;
      }
  
      /**
       * Set the attribute bo list from the map of attribute key/value pairs and then calls
       * {@link org.kuali.rice.kew.api.peopleflow.PeopleFlowService} to save the people flow instance
       */
      @Override
      public void saveDataObject() {
          ((PeopleFlowBo) getDataObject()).updateAttributeBoValues();
  
          PeopleFlowDefinition peopleFlowDefinition = PeopleFlowBo.to(((PeopleFlowBo) getDataObject()));
          if (StringUtils.isNotBlank(peopleFlowDefinition.getId())) {
              KewApiServiceLocator.getPeopleFlowService().updatePeopleFlow(peopleFlowDefinition);
          } else {
              KewApiServiceLocator.getPeopleFlowService().createPeopleFlow(peopleFlowDefinition);
          }
      }
  }