/**
    * This file Copyright (c) 2003-2011 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.link;
  
  import info.magnolia.cms.beans.config.ServerConfiguration;
  import info.magnolia.cms.beans.runtime.File;
  import info.magnolia.cms.core.Content;
  import info.magnolia.cms.core.ItemType;
  import info.magnolia.cms.core.MgnlNodeType;
  import info.magnolia.cms.core.NodeData;
  
  import javax.jcr.Node;
  import javax.jcr.Property;
  import javax.jcr.PropertyType;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Representation of the link to a content in Magnolia CMS. The target for the link might be a content (page, paragraph) or the node data (binary file).
   * @author had
   *
   */
  public class Link {
  
      private static final Logger log = LoggerFactory.getLogger(Link.class);
  
      private String repository;
      private String handle;
      private String uuid;
      private String nodeDataName;
      private String extension;
      private Content node;
      private NodeData nodeData;
      private String fileName;
      private String fallbackHandle;
      private String anchor;
      private String parameters;
      
      private Node jcrNode;
      private Property property;
      private String propertyName;
      private String identifier;
      
      /**
       * A constructor for undefined links. (i.e linking to a nonexistent page, for instance)
       */
      public Link() {
      }
  
      /**
       * @param content
       * @deprecated since 5.0
       */
      public Link(Content content) {
          setNode(content);
          try {
              setRepository(content.getWorkspace().getName());
          } catch (RepositoryException e) {
              throw new RuntimeException(e);
          }
          // should we have Content.hasUUID()? ... DefaultContent hides the fact that some nodes might not have UUIDs (we can link to other content then just the one in website
          if (content.isNodeType(ItemType.MIX_REFERENCEABLE)) {
              setUUID(content.getUUID());
          }
      }
     
     /**
      * @param node
      * @throws RepositoryException 
      */
     public Link(Node node) throws RepositoryException {
         setJCRNode(node);
         try {
             setJCRNode(node);
             setRepository(node.getSession().getWorkspace().getName());
         } catch (RepositoryException e) {
             throw new RuntimeException(e);
         }
         if (node.isNodeType(MgnlNodeType.MIX_REFERENCEABLE)) {
             setIdentifier(node.getIdentifier());
         }
     }
 
     public Link(String repoName, Content parent, NodeData nodedata) {
         setNode(parent);
         setRepository(repoName);
         setNodeData(nodedata);
         setNodeDataName(nodedata.getName());
     }
 
      public String getExtension() {
          if(StringUtils.isEmpty(this.extension) && this.getNodeData() != null && this.getNodeData().getType() == PropertyType.BINARY){
              File binary = new File(nodeData);
              extension = binary.getExtension();
          }
          return StringUtils.defaultIfEmpty(this.extension, ServerConfiguration.getInstance().getDefaultExtension());
      }
 
     public void setExtension(String extension) {
         this.extension = extension;
     }
 
 
     public String getFileName() {
         if(StringUtils.isEmpty(this.fileName) && this.getNodeData() != null && this.getNodeData().getType() == PropertyType.BINARY){
             File binary = new File(nodeData);
             fileName = binary.getFileName();
         }
         return fileName;
     }
 
 
     public void setFileName(String fileName) {
         this.fileName = fileName;
     }
 
     /**
      * @deprecated since 5.0
      */
     public Content getNode() {
         return this.node;
     }
 
     /**
      * @deprecated since 5.0
      */
     public void setNode(Content node) {
         this.node = node;
     }
     
     public Node getJCRNode() {
         return this.jcrNode;
     }
 
 
     public void setJCRNode(Node jcrNode) {
         this.jcrNode = jcrNode;
     }
     
     public Property getProperty(){
         return this.property;
     }
     
     public void setProperty(Property property){
         this.property = property;
     }
 
     /**
      * @deprecated since 5.0
      */
     public NodeData getNodeData() {
         if(this.nodeData == null && StringUtils.isNotEmpty(this.nodeDataName) && this.getNode() != null){
             this.nodeData = this.getNode().getNodeData(this.nodeDataName);
         }
         return this.nodeData;
     }
 
     /**
      * @deprecated since 5.0
      */
     public void setNodeData(NodeData nodeData) {
         this.nodeData = nodeData;
     }
 
     public boolean isEditorBinaryLink(){
         return getNodeData() != null;
     }
     
     public String getPropertyName() {
         return this.propertyName;
     }
 
     public void setPropertyName(String propertyName) {
         this.propertyName = propertyName;
     }
 
     public String getNodeDataName() {
         return this.nodeDataName;
     }
 
     public void setNodeDataName(String nodeDataName) {
         this.nodeDataName = nodeDataName;
     }
 
      public String getHandle() {
          if(StringUtils.isEmpty(this.handle)){
              if(getNode() != null){
                  handle = getNode().getHandle();
              } else {
                  handle = this.getFallbackHandle();
              }
          }
          return this.handle;
      }
 
     public void setHandle(String path) {
         this.handle = path;
     }
 
     public String getRepository() {
         return this.repository;
     }
 
     public void setRepository(String repository) {
         this.repository = repository;
     }
 
     public String getIdentifier() throws RepositoryException {
         if(StringUtils.isEmpty(this.identifier) && this.getJCRNode() != null){
             this.identifier = this.getJCRNode().getIdentifier();
         }
         return this.uuid;
     }
     
     public void setIdentifier(String identifier) {
         this.identifier = identifier;
     }
     
      public String getUUID() {
          if(StringUtils.isEmpty(this.uuid) && this.getNode() != null){
              this.uuid = this.getNode().getUUID();
          }
          return this.uuid;
      }
 
     public void setUUID(String uuid) {
         this.uuid = uuid;
     }
 
     public String getFallbackHandle() {
         return this.fallbackHandle;
     }
 
     public void setFallbackHandle(String fallbackPath) {
         this.fallbackHandle = fallbackPath;
     }
 
     public String getAnchor() {
         return this.anchor;
     }
 
     public void setAnchor(String anchor) {
         this.anchor = anchor;
     }
 
     public String getParameters() {
         return this.parameters;
     }
 
     public void setParameters(String parameters) {
         this.parameters = parameters;
     }
 }