/**
    * 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.cms.taglibs;
  
  import info.magnolia.cms.gui.control.Button;
  import info.magnolia.module.templating.Paragraph;
  import info.magnolia.module.templating.ParagraphManager;
  import info.magnolia.cms.beans.config.ServerConfiguration;
  import info.magnolia.cms.core.AggregationState;
  import info.magnolia.cms.core.Content;
  import info.magnolia.cms.gui.inline.BarEdit;
  import info.magnolia.cms.i18n.Messages;
  import info.magnolia.cms.i18n.MessagesManager;
  import info.magnolia.cms.security.Permission;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.module.admininterface.dialogs.ParagraphSelectDialog;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.commons.lang.exception.NestableRuntimeException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.servlet.jsp.tagext.TagSupport;
  import java.io.IOException;
  
  /**
   * Displays Magnolia editBar which allows you to edit a paragraph. This tag is often used within
   * contentNodeIterator, which in turn will set all relevant parameters automatically.
   *
   * @jsp.tag name="editBar" body-content="JSP"
   *
   * @author Sameer Charles
   * @author Marcel Salathe
   * @version $Revision: 41137 $ ($Author: gjoseph $)
   */
  public class EditBar extends TagSupport {
  
      private String nodeName;
  
      private String nodeCollectionName;
  
      private String paragraph;
  
      private String dialog;
  
      private String editLabel;
  
      private String deleteLabel;
  
      private String moveLabel;
      
      private static final Logger log = LoggerFactory.getLogger(EditBar.class);
  
      /**
       * Show links only in admin instance.
       */
      private boolean adminOnly = true;
  
      /**
       * Show paragraph name in the bar.
       */
      private boolean showParagraphName = false;
  
      /**
       * The contentNode (i.e. paragraph) you wish to edit.
       * @jsp.attribute required="false" rtexprvalue="true"
       */
      public void setContentNodeName(String name) {
         this.nodeName = name;
     }
 
     /**
      * The contentNode collection.
      * @jsp.attribute required="false" rtexprvalue="true"
      */
     public void setContentNodeCollectionName(String name) {
         this.nodeCollectionName = name;
     }
 
     /**
      * Name of paragraph (as defined in config). Does not
      * have to be set inside "contentNodeIterator".
      * @jsp.attribute required="false" rtexprvalue="true"
      */
     public void setParagraph(String paragraph) {
         this.paragraph = paragraph;
     }
 
     /**
      * Name of the dialog to open. If specified, overrides
      * the paragraph attribute, or the dialog name determined
      * by the current paragraph if any.
      * @jsp.attribute required="false" rtexprvalue="true"
      */
     public void setDialog(String dialog) {
         this.dialog = dialog;
     }
 
     /**
      * The text of the edit button, defaults to "Edit".
      * @jsp.attribute required="false" rtexprvalue="true"
      */
     public void setEditLabel(String label) {
         this.editLabel = label;
     }
 
     /**
      * The text of the delete button, defaults to "Delete". Use "" to get no delete button.
      * @jsp.attribute required="false" rtexprvalue="true"
      */
     public void setDeleteLabel(String label) {
         this.deleteLabel = label;
     }
 
     /**
      * The text of the move button, defaults to "Move". Use "" to get no move button.
      * @jsp.attribute required="false" rtexprvalue="true"
      */
     public void setMoveLabel(String label) {
         this.moveLabel = label;
     }
 
     /**
      * Show only in admin instance, default to true.
      * @param adminOnly The adminOnly to set.
      * @jsp.attribute required="false" rtexprvalue="true" type="boolean"
      */
     public void setAdminOnly(boolean adminOnly) {
         this.adminOnly = adminOnly;
     }
 
     public boolean isShowParagraphName() {
         return showParagraphName;
     }
 
     /**
      * Show the paragraph name, default to false.
      * @param showParagraphName Show the paragraph name.
      * @jsp.attribute required="false" rtexprvalue="true" type="boolean"
      */
     public void setShowParagraphName(boolean showParagraphName) {
         this.showParagraphName = showParagraphName;
     }
 
     /**
      * @see javax.servlet.jsp.tagext.Tag#doStartTag()
      */
     public int doStartTag() {
         return EVAL_BODY_INCLUDE;
     }
 
     /**
      * @see javax.servlet.jsp.tagext.Tag#doEndTag()
      */
     public int doEndTag() {
 
         final AggregationState aggregationState = MgnlContext.getAggregationState();
         if ((!adminOnly || ServerConfiguration.getInstance().isAdmin()) && aggregationState.getMainContent().isGranted(Permission.SET)) {
             try {
                 BarEdit bar = new BarEdit();
 
                 Content localContentNode = Resource.getLocalContentNode();
 
                 if(StringUtils.isNotEmpty(this.nodeName)){
                     try {
                         if (localContentNode.hasContent(this.nodeName)) {
                             localContentNode = localContentNode.getContent(this.nodeName);
                         } else {
                             localContentNode = null;
                         }
                     } catch (Exception e) {
                         log.warn(e.getMessage(), e);
                     }
                 }
 
                 final String paragraphToUse;
                 if (this.dialog != null) {
                     paragraphToUse = this.dialog;
                 } else if (this.paragraph == null && localContentNode != null) {
                     paragraphToUse = localContentNode.getMetaData().getTemplate();
                 } else {
                     paragraphToUse = this.paragraph;
                 }
                 bar.setParagraph(paragraphToUse);
 
                 if (this.nodeCollectionName == null) {
                     this.nodeCollectionName = StringUtils.defaultString(Resource.getLocalContentNodeCollectionName());
                 }
                 bar.setNodeCollectionName(this.nodeCollectionName);
 
                 if (this.nodeName == null) {
                     if (localContentNode != null) {
                         this.nodeName = localContentNode.getName();
                     }
                 }
                 bar.setNodeName(this.nodeName);
 
                 try {
                     String path;
                     if (localContentNode != null) {
                         path = localContentNode.getParent().getHandle();
                         if (StringUtils.isNotEmpty(this.nodeCollectionName) && path.endsWith("/" + this.nodeCollectionName)) {
                             path = StringUtils.removeEnd(path, "/" + this.nodeCollectionName);
                         }
                     }
                     else {
                         path = Resource.getCurrentActivePage().getHandle();
                     }
                     bar.setPath(path);
                 } 
                 catch (Exception re) {
                     bar.setPath(StringUtils.EMPTY);
                 }
 
                 bar.setDefaultButtons();
                 // TODO - yes this is a bit ugly - 1) we should in fact open the correct dialog immediately instead of faking the paragraph parameter - 2) the gui elements should not have defaults nor know anything about urls and onclick functions
                 if (this.dialog == null) {
                     bar.getButtonEdit().setDialogPath(ParagraphSelectDialog.EDITPARAGRAPH_DIALOG_URL);
                     bar.getButtonEdit().setDefaultOnclick(); // re-set the onclick after having set the dialog path.
                 }
 
                 if (this.editLabel != null) {
                     if (StringUtils.isEmpty(this.editLabel)) {
                         bar.setButtonEdit(null);
                     }
                     else {
                         bar.getButtonEdit().setLabel(this.editLabel);
                     }
                 }
 
                 if (this.moveLabel != null) {
                     if (StringUtils.isEmpty(this.moveLabel)) {
                         bar.setButtonMove(null);
                     }
                     else {
                         bar.getButtonMove().setLabel(this.moveLabel);
                     }
                 }
 
                 if (this.deleteLabel != null) {
                     if (StringUtils.isEmpty(this.deleteLabel)) {
                         bar.setButtonDelete((Button)null);
                     }
                     else {
                         bar.getButtonDelete().setLabel(this.deleteLabel);
                     }
                 }
                 bar.placeDefaultButtons();
 
                 if (isShowParagraphName() && this.dialog == null) {
                     final Paragraph paragraphInfo = ParagraphManager.getInstance().getParagraphDefinition(paragraphToUse);
                     final Messages msgs = MessagesManager.getMessages(paragraphInfo.getI18nBasename());
                     final String label = msgs.getWithDefault(paragraphInfo.getTitle(), paragraphInfo.getTitle());
                     bar.setLabel(label);
                 }
 
                 bar.drawHtml(pageContext.getOut());
             }
             catch (IOException e) {
                 throw new NestableRuntimeException(e);
             }
         }
         reset();
 
         return EVAL_PAGE;
     }
 
     protected void reset() {
         this.nodeName = null;
         this.nodeCollectionName = null;
         this.paragraph = null;
         this.dialog = null;
         this.editLabel = null;
         this.deleteLabel = null;
         this.moveLabel = null;
         this.adminOnly = true;
         this.showParagraphName = false;
     }
 
 }