/*
    * Copyright (C) 2003-2009 eXo Platform SAS.
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Affero General Public License
    * as published by the Free Software Foundation; either version 3
    * of the License, or (at your option) any later version.
    *
    * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see<http://www.gnu.org/licenses/>.
   */
  package org.exoplatform.services.wcm.core;
  
  import javax.jcr.Item;
  import javax.jcr.Node;
  import javax.jcr.PathNotFoundException;
  import javax.jcr.RepositoryException;
  import javax.jcr.Session;
  
  import org.exoplatform.services.cms.link.NodeFinder;
  import org.exoplatform.services.jcr.core.ManageableRepository;
  import org.exoplatform.services.security.IdentityConstants;
  import org.exoplatform.services.wcm.utils.WCMCoreUtils;
  
  /**
   * Created by The eXo Platform SAS
   * Author : Nguyen Anh Vu
   *              anhvurz90@gmail.com
   * 5 Jul. 2011
   */
  public class ItemLocation {
    
    /** The repository. */
    protected String repository;
  
    /** The workspace. */
    protected String workspace;
  
    /** The path. */
    protected String path;
    
    /** The UUID. */
    protected String uuid;
    
    /** If session is system */
    protected boolean isSystemSession;
    
    /**
     * Instantiates a new item location.
     */
    public ItemLocation() {}
    
    /**
     * Instantiates a new item location.
     *
     * @param repository the repository
     * @param workspace the workspace
     * @param path the path
     * @param uuid the uuid
     * @param isSystem if the node session is system 
     */
    public ItemLocation(final String repository, final String workspace, final String path, final String uuid, 
        final boolean isSystem) {
      this.repository = repository;
      this.workspace = workspace;
      this.path = path;
      this.uuid = uuid;
      this.isSystemSession = isSystem;
    }
    
    /**
     * Instantiates a new item location.
     *
     * @param repository the repository
     * @param workspace the workspace
     * @param path the path
     * @param uuid the uuid
     */
    public ItemLocation(final String repository, final String workspace, final String path, final String uuid ) {
      this(repository, workspace, path, uuid, false);
    }
    
    /**
     * Instantiates a new item location.
     *
     * @param repository the repository
     * @param workspace the workspace
     * @param path the path
     */
    public ItemLocation(final String repository, final String workspace, final String path) {
      this(repository, workspace, path, null, false);
    }
  
    /**
    * Instantiates a new item location.
    */
   public ItemLocation(ItemLocation itemLocation) {
     this(itemLocation.repository, itemLocation.workspace, itemLocation.path, itemLocation.uuid, itemLocation.isSystemSession);
   }
 
   /**
    * Gets the repository.
    *
    * @return the repository
    */
   public String getRepository() {
     return repository;
   }
 
   /**
    * Sets the repository.
    *
    * @param repository the new repository
    */
   public void setRepository(String repository) {
     this.repository = repository;
   }
 
   /**
    * Gets the workspace.
    *
    * @return the workspace
    */
   public String getWorkspace() {
     return workspace;
   }
 
   /**
    * Sets the workspace.
    *
    * @param workspace the new workspace
    */
   public void setWorkspace(String workspace) {
     this.workspace = workspace;
   }
 
   /**
    * Gets the path.
    *
    * @return the path
    */
   public String getPath() {
     return path;
   }
 
 
   /**
    * Sets the path.
    *
    * @param path the new path
    */
   public void setPath(String path) {
     this.path = path;
   }
   
   /**
    * Sets the uuid.
    *
    * @param uuid the new uuid
    */
   public void setUUID(String uuid) {
     this.uuid = uuid;
   }
 
   /**
    * Gets the uuid.
    *
    * @return the uuid
    */
   public String getUUID() {
     return uuid;
   }
   
   /**
    * Sets the isSystemSession.
    *
    * @param value isSysstemSession
    */
   public void setSystemSession(boolean value) {
     this.isSystemSession = value;
   }
 
   /**
    * Gets the isSystemSession.
    *
    * @return true if node session is system, false if not
    */
   public boolean isSystemSession() {
     return this.isSystemSession;
   }
   
   /**
    * Get an ItemLocation object by an item
    *
    * @param item the item
    *
    * @return a ItemLocation object
    */
   public static final ItemLocation getItemLocationByItem(final Item item) {
     Session session = null;
     try {
       session = item.getSession();
       String repository = ((ManageableRepository)session.getRepository()).getConfiguration().getName();
       String workspace = session.getWorkspace().getName();
       String path = item.getPath();
       String uuid = null;
       try {
         if (item instanceof Node)
           uuid = ((Node)item).getUUID();
       } catch (RepositoryException e) {
         uuid = null;
       }
       boolean isSystemSession = IdentityConstants.SYSTEM.equals(session.getUserID());
       return new ItemLocation(repository, workspace, path, uuid, isSystemSession);
     } catch (RepositoryException e) {
       return null;
     }
   }
 
   /**
    * Get an item by a ItemLocation object.
    *
    * @param itemLocation the ItemLocation object
    *
    * @return an item
    */
   public static final Item getItemByLocation(final ItemLocation itemLocation) {
     Session session = null;
     try {
       ManageableRepository repository = WCMCoreUtils.getRepository();
       session = (itemLocation.isSystemSession ? 
                         WCMCoreUtils.getSystemSessionProvider() : WCMCoreUtils.getUserSessionProvider())
                                     .getSession(itemLocation.getWorkspace(), repository);
       if (itemLocation.getUUID() != null)
         return session.getNodeByUUID(itemLocation.getUUID());
       else {
         return WCMCoreUtils.getService(NodeFinder.class).getItem(session, itemLocation.getPath());
       }
     } catch(PathNotFoundException pne) {
       return null;
     } catch (Exception e) {
       return null;
     }
   }
 
   
   
 }