/**
    * This file Copyright (c) 2011 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.cms.core.version;
  
  import info.magnolia.cms.core.ItemType;
  import info.magnolia.jcr.wrapper.DelegateNodeWrapper;
  import info.magnolia.jcr.wrapper.DelegatePropertyWrapper;
  import info.magnolia.jcr.wrapper.PropertyWrappingNodeWrapper;
  
  import java.util.Calendar;
  
  import javax.jcr.AccessDeniedException;
  import javax.jcr.Item;
  import javax.jcr.ItemNotFoundException;
  import javax.jcr.Node;
  import javax.jcr.PathNotFoundException;
  import javax.jcr.Property;
  import javax.jcr.RepositoryException;
  import javax.jcr.Session;
  import javax.jcr.nodetype.NodeType;
  import javax.jcr.version.Version;
  import javax.jcr.version.VersionHistory;
  
  /**
   * Wrapper for version of the node exposing frozen node content as its own as used to happen in old Content API.
   *
   * @version $Id$
   */
  public class VersionedNode extends PropertyWrappingNodeWrapper implements Version {
  
  
      private final Version version;
      private final Node baseNode;
  
      private class VersionedNodeChild extends PropertyWrappingNodeWrapper implements Node {
  
          private final DelegateNodeWrapper versionedParent;
  
          public VersionedNodeChild(VersionedNode versionedNode, Node node) {
              super(node);
              this.versionedParent = versionedNode;
          }
  
          public VersionedNodeChild(VersionedNodeChild versionedNode, Node node) {
              super(node);
              this.versionedParent = versionedNode;
          }
  
          @Override
          public int getDepth() throws RepositoryException {
              return this.versionedParent.getDepth() + 1;
          }
  
          @Override
          public Item getAncestor(int depth) throws ItemNotFoundException, AccessDeniedException, RepositoryException {
              // at some point we will enter the real hierarchy, so its easiest to loop
              Node parent = getParent();
              while(parent.getDepth() > depth){
                  parent = parent.getParent();
              }
              return parent;
          }
  
  
  
          @Override
          public Node getParent() throws ItemNotFoundException,
          AccessDeniedException, RepositoryException {
             return this.versionedParent;
         }
 
         @Override
         public String getPath() throws RepositoryException {
             return this.versionedParent.getPath() + "/" + getName();
         }
 
         @Override
         public NodeType getPrimaryNodeType() throws RepositoryException {
             return getSession().getWorkspace().getNodeTypeManager().getNodeType(getWrappedNode().getProperty(ItemType.JCR_FROZEN_PRIMARY_TYPE).getString());
         }
 
         @Override
         public boolean isNodeType(String nodeTypeName) throws RepositoryException {
             return getPrimaryNodeType().isNodeType(nodeTypeName);
         }
 
         @Override
         public Property wrapProperty(Property property) {
             return new DelegatePropertyWrapper(property) {
                 @Override
                 public String getPath() throws RepositoryException {
                     return VersionedNodeChild.this.getPath() + "/" + getName();
                 }
             };
         }
 
         @Override
         public Node wrapNode(Node node) {
             return new VersionedNodeChild(this, node);
         }
     }
 
     public VersionedNode(Version versionedNode, Node baseNode) throws PathNotFoundException, RepositoryException {
         super(versionedNode.getNode(ItemType.JCR_FROZENNODE));
         this.version = versionedNode;
         this.baseNode = baseNode;
     }
 
     @Override
     public int getDepth() throws RepositoryException {
         return this.baseNode.getDepth();
     }
 
     @Override
     public Item getAncestor(int depth) throws ItemNotFoundException, AccessDeniedException, RepositoryException {
         return this.baseNode.getAncestor(depth);
     }
 
     public Version unwrap() {
         return version;
     }
 
     @Override
     public VersionHistory getContainingHistory() throws RepositoryException {
         return version.getContainingHistory();
     }
 
     @Override
     public Calendar getCreated() throws RepositoryException {
         return version.getCreated();
     }
 
     @Override
     public Node getFrozenNode() throws RepositoryException {
         return deepUnwrap(getClass());
     }
 
     @Override
     public Version getLinearPredecessor() throws RepositoryException {
         return version.getLinearPredecessor();
     }
 
     @Override
     public Version getLinearSuccessor() throws RepositoryException {
         return version.getLinearSuccessor();
     }
 
     @Override
     public Version[] getPredecessors() throws RepositoryException {
         return null;
     }
 
     @Override
     public Version[] getSuccessors() throws RepositoryException {
         return version.getSuccessors();
     }
 
     @Override
     public Node wrapNode(Node node) {
         return new VersionedNodeChild(this, node);
     }
 
     @Override
     public Property wrapProperty(Property property) {
         return new DelegatePropertyWrapper(property) {
             @Override
             public String getPath() throws RepositoryException {
                 return getPath() + "/" + getName();
             }
         };
     }
 
     @Override
     public String getPath() throws RepositoryException {
         return baseNode.getPath();
     }
 
     @Override
     public Node getParent() throws ItemNotFoundException,
     AccessDeniedException, RepositoryException {
         return baseNode.getParent();
     }
 
     @Override
     public boolean isNodeType(String nodeTypeName) throws RepositoryException {
         return baseNode.isNodeType(nodeTypeName);
     }
 
     @Override
     public NodeType getPrimaryNodeType() throws RepositoryException {
         return baseNode.getPrimaryNodeType();
     }
 
     public Node getBaseNode() {
         return baseNode;
     }
 
     @Override
     public Session getSession() throws RepositoryException {
         return baseNode.getSession();
     }
 }