//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  
  package org.eclipse.jetty.maven.plugin;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.maven.model.Plugin;
  import org.apache.maven.project.MavenProject;
  import org.codehaus.plexus.util.xml.Xpp3Dom;
  import org.eclipse.jetty.util.StringUtil;
  
  /**
   * WarPluginInfo
   * <p>
   * Information about the maven-war-plugin contained in the pom
   */
  public class WarPluginInfo
  {
      private MavenProject _project;
      private Plugin _plugin;
      private List<String> _dependentMavenWarIncludes;
      private List<String> _dependentMavenWarExcludes;
      private List<OverlayConfig> _overlayConfigs;
      
      
      public WarPluginInfo (MavenProject project)
      {
          _project = project;
      }
  
      
      
      
      /**
       * Find the maven-war-plugin, if one is configured
       * @return the plugin
       */
      public Plugin getPlugin()
      {
          if (_plugin == null)
          {
              List plugins = _project.getBuildPlugins();
              if (plugins == null)
                  return null;
  
  
              Iterator itor = plugins.iterator();
              while (itor.hasNext() && _plugin==null)
              {
                  Plugin plugin = (Plugin)itor.next();
                  if ("maven-war-plugin".equals(plugin.getArtifactId()))
                      _plugin = plugin;
              }
          }
          return _plugin;
      }
  
      
      
  
      /**
       * Get value of dependentWarIncludes for maven-war-plugin
       * @return the list of dependent war includes
       */
      public List<String> getDependentMavenWarIncludes()
      {
          if (_dependentMavenWarIncludes == null)
          {
              getPlugin();
  
              if (_plugin == null)
                  return null;
  
              Xpp3Dom node = (Xpp3Dom)_plugin.getConfiguration();
              if (node == null)
                  return null;
  
              node = node.getChild("dependentWarIncludes");
             if (node == null)
                 return null;
             String val = node.getValue();
             _dependentMavenWarIncludes = StringUtil.csvSplit(null,val,0,val.length());
         }
         return _dependentMavenWarIncludes;
     }
 
 
     
     
     /**
      * Get value of dependentWarExcludes for maven-war-plugin
      * @return the list of dependent war excludes
      */
     public List<String> getDependentMavenWarExcludes()
     {
         if (_dependentMavenWarExcludes == null)
         {
             getPlugin();
 
             if (_plugin == null)
                 return null;
 
             Xpp3Dom node = (Xpp3Dom)_plugin.getConfiguration();
             if (node == null)
                 return null;
 
             node = node.getChild("dependentWarExcludes");
             if (node == null)
                 return null;
             String val = node.getValue();
             _dependentMavenWarExcludes = StringUtil.csvSplit(null,val,0,val.length());
         }
         return _dependentMavenWarExcludes;
     }
 
     
     
     
     /**
      * Get config for any overlays that have been declared for the maven-war-plugin.
      * 
      * @return the list of overlay configs
      */
     public List<OverlayConfig> getMavenWarOverlayConfigs ()
     {
         if (_overlayConfigs == null)
         {
             getPlugin();
 
             if (_plugin == null)
                 return Collections.emptyList();
 
             getDependentMavenWarIncludes();
             getDependentMavenWarExcludes();
 
             Xpp3Dom node = (Xpp3Dom)_plugin.getConfiguration();
             if (node == null)
                 return Collections.emptyList();
 
             node = node.getChild("overlays");
             if (node == null)
                 return Collections.emptyList();
 
             Xpp3Dom[] nodes = node.getChildren("overlay");
             if (nodes == null)
                 return Collections.emptyList();
 
             _overlayConfigs = new ArrayList<OverlayConfig>();
             for (int i=0;i<nodes.length;i++)
             {
                 OverlayConfig overlayConfig = new OverlayConfig(nodes[i], _dependentMavenWarIncludes, _dependentMavenWarExcludes);
                 _overlayConfigs.add(overlayConfig);
             }
         }
 
         return _overlayConfigs;
     }
     
     
     
     
     /**
      * @return the xml as a string
      */
     public String getMavenWarOverlayConfigAsString ()
     {
         getPlugin();
 
         if (_plugin == null)
             return "";
         
         Xpp3Dom node = (Xpp3Dom)_plugin.getConfiguration();
         if (node == null)
             return "";
         return node.toString();
     }
 }