/**
    * Copyright 2005-2012 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.api.action;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Set;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlAnyElement;
  import javax.xml.bind.annotation.XmlElement;
  import javax.xml.bind.annotation.XmlElementWrapper;
  import javax.xml.bind.annotation.XmlRootElement;
  import javax.xml.bind.annotation.XmlType;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.CoreConstants;
  import org.kuali.rice.core.api.mo.AbstractDataTransferObject;
  import org.w3c.dom.Element;
  
  @XmlRootElement(name = AdHocRevoke.Constants.ROOT_ELEMENT_NAME)
  @XmlAccessorType(XmlAccessType.NONE)
  @XmlType(name = AdHocRevoke.Constants.TYPE_NAME, propOrder = {
  		AdHocRevoke.Elements.NODE_NAMES,
  		AdHocRevoke.Elements.PRINCIPAL_IDS,
  		AdHocRevoke.Elements.GROUP_IDS,
  		CoreConstants.CommonElements.FUTURE_ELEMENTS
  })
  public final class AdHocRevoke extends AbstractDataTransferObject {
  
  	private static final long serialVersionUID = 5848714514445793355L;
  	
  	@XmlElementWrapper(name = Elements.NODE_NAMES, required = false)
  	@XmlElement(name = Elements.NODE_NAME, required = false)
  	private final Set<String> nodeNames;
  	
  	@XmlElementWrapper(name = Elements.PRINCIPAL_IDS, required = false)
  	@XmlElement(name = Elements.PRINCIPAL_ID, required = false)
  	private final Set<String> principalIds;
  	
  	@XmlElementWrapper(name = Elements.GROUP_IDS, required = false)
  	@XmlElement(name = Elements.GROUP_ID, required = false)
  	private final Set<String> groupIds;
  		
      @SuppressWarnings("unused")
      @XmlAnyElement
      private final Collection<Element> _futureElements = null;
  	
      /**
       * Private constructor used only by JAXB.
       */
      private AdHocRevoke() {
          this.nodeNames = null;
          this.principalIds = null;
          this.groupIds = null;
      }
  
      
      private AdHocRevoke(Set<String> nodeNames, Set<String> principalIds, Set<String> groupIds) {
      	this.nodeNames = nodeNames;
      	this.principalIds = principalIds;
      	this.groupIds = groupIds;
      }
      
      public static AdHocRevoke create(Set<String> nodeNames, Set<String> principalIds, Set<String> groupIds) {
      	return new AdHocRevoke(nodeNames, principalIds, groupIds);
      }
      
      public static AdHocRevoke createRevokeFromPrincipal(String principalId) {
      	if (StringUtils.isBlank(principalId)) {
      		throw new IllegalArgumentException("principalId was null or blank");
      	}
      	return create(null, Collections.singleton(principalId), null);
      }
      
      public static AdHocRevoke createRevokeFromGroup(String groupId) {
      	if (StringUtils.isBlank(groupId)) {
      		throw new IllegalArgumentException("groupId was null or blank");
      	}
      	return create(null, null, Collections.singleton(groupId));
      }
      
      public static AdHocRevoke createRevokeAtNode(String nodeName) {
      	if (StringUtils.isBlank(nodeName)) {
      		throw new IllegalArgumentException("nodeName was null or blank");
     	}
     	return create(Collections.singleton(nodeName), null, null);
     }
     
 	public Set<String> getNodeNames() {
 		if (nodeNames == null) {
 			return Collections.emptySet();
 		}
 		return Collections.unmodifiableSet(nodeNames);
 	}
 	
 	public Set<String> getPrincipalIds() {
 		if (principalIds == null) {
 			return Collections.emptySet();
 		}
 		return Collections.unmodifiableSet(principalIds);
 	}
 	
 	public Set<String> getGroupIds() {
 		if (groupIds == null) {
 			return Collections.emptySet();
 		}
 		return Collections.unmodifiableSet(groupIds);
 	}
 	
 	/**
      * Defines some internal constants used on this class.
      */
     static class Constants {
         final static String ROOT_ELEMENT_NAME = "adHocRevoke";
         final static String TYPE_NAME = "AdHocRevokeType";
     }
     
     /**
      * A private class which exposes constants which define the XML element names to use when this object is marshalled to XML.
      */
     static class Elements {
     	final static String NODE_NAMES = "nodeNames";
         final static String NODE_NAME = "nodeName";
         final static String PRINCIPAL_IDS = "principalIds";
         final static String PRINCIPAL_ID = "principalId";
         final static String GROUP_IDS = "groupIds";
         final static String GROUP_ID = "groupId";
     }
 
 }