/**

  * 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.edl.impl.components;

 import org.kuali.rice.edl.impl.EDLXmlUtils;

 import org.kuali.rice.edl.impl.RequestParser;

 import org.kuali.rice.kew.service.KEWServiceLocator;

 import org.kuali.rice.kew.util.Utilities;

 import org.kuali.rice.kew.workgroup.GroupId;

 import org.kuali.rice.kew.workgroup.GroupNameId;

 import org.kuali.rice.kim.api.group.Group;

 import org.w3c.dom.Element;

 import org.w3c.dom.NodeList;

 /**

  * Looks up workgroup param to validate workgroup exists and is active.  Returns error message if workgroup is does not exist or is not active.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class WorkgroupWorkflowEDLConfigComponent extends SimpleWorkflowEDLConfigComponent {

         private boolean required = false;

         protected GroupId resolveId(String id) {

                 String groupName = Utilities.parseGroupName(id);

             String namespace = Utilities.parseGroupNamespaceCode(id);

                 return new GroupNameId(namespace, groupName);

         }

         @Override

         public Element getReplacementConfigElement(Element element) {

                 Element replacementEl = (Element)element.cloneNode(true);

                 Element type = (Element)((NodeList)replacementEl.getElementsByTagName(EDLXmlUtils.TYPE_E)).item(0);

                 type.setTextContent("text");

                 //find the validation element if required is true set a boolean and determine if blanks

                 //are allowed based on that

                 Element validation = (Element)((NodeList)replacementEl.getElementsByTagName(EDLXmlUtils.VALIDATION_E)).item(0);

                 if (validation != null && validation.getAttribute("required").equals("true")) {

                         required = true;

                 }

                 return replacementEl;

         }

         @Override

         public String getErrorMessage(Element originalConfigElement, RequestParser requestParser, MatchingParam param) {

                 if (param.getParamValue().length() == 0 && required == true) {

                         //empty and required so send error

                         return ("Workgroup is a required field");

                 } else if (param.getParamValue().length() == 0 && required == false) { 

                         //empty but not required then just return 

                         return null;

                 }

                 String wrkgrpName = param.getParamValue();

                 // TODO add support for namespace here!

                 Group group = KEWServiceLocator.getIdentityHelperService().getGroup(resolveId(wrkgrpName));

                 if (group == null) {

                     return ("Group " + wrkgrpName + " not found.");

                 }

                 if (!group.isActive()) {

                     return ("Group " + wrkgrpName + " is not an active group.");

                 }

                 return null;

         }

         public boolean isRequired() {

                 return required;

         }

         public void setRequired(boolean required) {

                 this.required = required;

         }

 }