/**
    * 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.xml.export;
  
  import org.jdom.Element;
  import org.kuali.rice.core.api.impex.ExportDataSet;
  import org.kuali.rice.core.api.util.xml.XmlRenderer;
  import org.kuali.rice.core.framework.impex.xml.XmlExporter;
  import org.kuali.rice.kew.export.KewExportDataSet;
  import org.kuali.rice.kim.api.group.Group;
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  import org.kuali.rice.kim.api.type.KimType;
  
  import java.util.Iterator;
  
  import static org.kuali.rice.core.api.impex.xml.XmlConstants.*;
  
  /**
   * This is a description of what this class does - jjhanso don't forget to fill this in.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class GroupXmlExporter implements XmlExporter {
      protected final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(getClass());
  
      private XmlRenderer renderer = new XmlRenderer(GROUP_NAMESPACE);
  
  	@Override
  	public boolean supportPrettyPrint() {
  		return true;
  	}
      
      /**
       * This overridden method ...
       *
       * @see org.kuali.rice.core.framework.impex.xml.XmlExporter#export(org.kuali.rice.core.api.impex.ExportDataSet)
       */
      public Element export(ExportDataSet exportDataSet) {
      	KewExportDataSet dataSet = KewExportDataSet.fromExportDataSet(exportDataSet);
          if (!dataSet.getGroups().isEmpty()) {
              Element rootElement = renderer.renderElement(null, GROUPS);
              rootElement.setAttribute(SCHEMA_LOCATION_ATTR, GROUP_SCHEMA_LOCATION, SCHEMA_NAMESPACE);
              for (Iterator iterator = dataSet.getGroups().iterator(); iterator.hasNext();) {
                  Group group = (Group) iterator.next();
                  exportGroup(rootElement, group);
              }
              return rootElement;
          }
          // TODO jjhanso - THIS METHOD NEEDS JAVADOCS
          return null;
      }
  
      /**
       * This method ...
       *
       * @param rootElement
       * @param group
       * @param object
       */
      private void exportGroup(Element parent, Group group) {
          Element groupElement = renderer.renderElement(parent, GROUP);
          if (group.getName() != null) {
              renderer.renderTextElement(groupElement, NAME, group.getName());
          }
          if (group.getNamespaceCode() != null) {
              renderer.renderTextElement(groupElement, NAMESPACE, group.getNamespaceCode());
          }
  
          if (group.getDescription() != null && !group.getDescription().trim().equals("")) {
              renderer.renderTextElement(groupElement, DESCRIPTION, group.getDescription());
          }
  
          renderer.renderTextElement(groupElement, ACTIVE, new Boolean(group.isActive()).toString());
  
          if (group.getKimTypeId() != null) {
              Element typeElement = renderer.renderElement(groupElement, TYPE);
              KimType kimType = KimApiServiceLocator.getKimTypeInfoService().getKimType(group.getKimTypeId());
              renderer.renderTextElement(typeElement, NAMESPACE, kimType.getNamespaceCode());
              renderer.renderTextElement(typeElement, NAME, kimType.getName());
          }
  
          if (group.getAttributes().size() > 0) {
              Element attributesElement = renderer.renderElement(groupElement, ATTRIBUTES);
              for (String key : group.getAttributes().keySet()) {
                  Element attributeElement = renderer.renderElement(attributesElement, ATTRIBUTE);
                 attributeElement.setAttribute(KEY, key);
                 attributeElement.setAttribute(VALUE, group.getAttributes().get(key));
             }
         }
 
         java.util.List<String> memberGroupIds = KimApiServiceLocator.getGroupService().getDirectMemberGroupIds(group.getId());
 
         java.util.List<String> memberPrincipalIds = KimApiServiceLocator.getGroupService().getDirectMemberPrincipalIds(
                 group.getId());
 
         if (memberGroupIds.size() > 0 || memberPrincipalIds.size() > 0) {
             Element membersElement = renderer.renderElement(groupElement, MEMBERS);
             for (String memberGroupId : memberGroupIds) {
                 Group memberGroup = KimApiServiceLocator.getGroupService().getGroup(memberGroupId);
                 Element groupNameElement = renderer.renderElement(membersElement, GROUP_NAME);
                 renderer.renderTextElement(groupNameElement, NAME, memberGroup.getName());
                 renderer.renderTextElement(groupNameElement, NAMESPACE, memberGroup.getNamespaceCode());
             }
             for (String memberPrincipalId : memberPrincipalIds) {
                 renderer.renderTextElement(membersElement, PRINCIPAL_NAME, KimApiServiceLocator.getIdentityService().getPrincipal(memberPrincipalId).getPrincipalName());
             }
         }
     }
 
 }