package org.apache.maven.shared.dependency.graph.internal;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *  http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.util.List;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.model.Exclusion;
  import org.apache.maven.shared.dependency.graph.DependencyNode;
  
  class VerboseDependencyNode
      extends DefaultDependencyNode
  {
  
      private final ConflictData data;
      
      VerboseDependencyNode( DependencyNode parent, Artifact artifact, String premanagedVersion,
                                    String premanagedScope, String versionConstraint, Boolean optional,
                                    List<Exclusion> exclusions, ConflictData data )
      {
          super( parent, artifact, premanagedVersion, premanagedScope, versionConstraint, optional, exclusions );
  
          this.data = data;
      }
      
      @Override
      public String toNodeString()
      {
          StringBuilder buffer = new StringBuilder();
  
          boolean included = ( data.getWinnerVersion() == null );
  
          if ( !included )
          {
              buffer.append( '(' );
          }
  
          buffer.append( getArtifact() );
  
          ItemAppender appender = new ItemAppender( buffer, included ? " (" : " - ", "; ", included ? ")" : "" );
  
          if ( getPremanagedVersion() != null )
          {
              appender.append( "version managed from ", getPremanagedVersion() );
          }
  
          if ( getPremanagedScope() != null )
          {
              appender.append( "scope managed from ", getPremanagedScope() );
          }
  
          if ( data.getOriginalScope() != null )
          {
              appender.append( "scope updated from ", data.getOriginalScope() );
          }
  
          if ( data.getIgnoredScope() != null )
          {
              appender.append( "scope not updated to ", data.getIgnoredScope() );
          }
  
  //        if ( getVersionSelectedFromRange() != null )
  //        {
  //            appender.append( "version selected from range ", getVersionSelectedFromRange().toString() );
  //            appender.append( "available versions ", getAvailableVersions().toString() );
  //        }
  
          if ( !included )
          {
              String winnerVersion = data.getWinnerVersion(); 
              if ( winnerVersion.equals( getArtifact().getVersion() ) )
              {
                appender.append( "omitted for duplicate" );
              }
              else
              {
                appender.append( "omitted for conflict with ", winnerVersion );
              }
          }
  
          appender.flush();
  
         if ( !included )
         {
             buffer.append( ')' );
         }
 
         return buffer.toString();
     }
 
     /**
      * Utility class to concatenate a number of parameters with separator tokens.
      */
     private static class ItemAppender
     {
         private StringBuilder buffer;
 
         private String startToken;
 
         private String separatorToken;
 
         private String endToken;
 
         private boolean appended;
 
         ItemAppender( StringBuilder buffer, String startToken, String separatorToken, String endToken )
         {
             this.buffer = buffer;
             this.startToken = startToken;
             this.separatorToken = separatorToken;
             this.endToken = endToken;
 
             appended = false;
         }
 
         public ItemAppender append( String item1 )
         {
             appendToken();
 
             buffer.append( item1 );
 
             return this;
         }
 
         public ItemAppender append( String item1, String item2 )
         {
             appendToken();
 
             buffer.append( item1 ).append( item2 );
 
             return this;
         }
 
         public void flush()
         {
             if ( appended )
             {
                 buffer.append( endToken );
 
                 appended = false;
             }
         }
 
         private void appendToken()
         {
             buffer.append( appended ? separatorToken : startToken );
 
             appended = true;
         }
     }
 }