package org.apache.maven.repository.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.io.File;
  import java.util.Map;
  import java.util.Objects;
  
  import org.eclipse.aether.artifact.AbstractArtifact;
  import org.eclipse.aether.artifact.Artifact;
  
  /**
   * @author Benjamin Bentmann
   */
  public final class RelocatedArtifact
      extends AbstractArtifact
  {
  
      private final Artifact artifact;
  
      private final String groupId;
  
      private final String artifactId;
  
      private final String version;
  
      private final String message;
  
      RelocatedArtifact( Artifact artifact, String groupId, String artifactId, String version, String message )
      {
          this.artifact = Objects.requireNonNull( artifact, "artifact cannot be null" );
          // TODO Use StringUtils here
          this.groupId = ( groupId != null && groupId.length() > 0 ) ? groupId : null;
          this.artifactId = ( artifactId != null && artifactId.length() > 0 ) ? artifactId : null;
          this.version = ( version != null && version.length() > 0 ) ? version : null;
          this.message = ( message != null && message.length() > 0 ) ? message : null;
      }
  
      public String getGroupId()
      {
          if ( groupId != null )
          {
              return groupId;
          }
          else
          {
              return artifact.getGroupId();
          }
      }
  
      public String getArtifactId()
      {
          if ( artifactId != null )
          {
              return artifactId;
          }
          else
          {
              return artifact.getArtifactId();
          }
      }
  
      public String getVersion()
      {
          if ( version != null )
          {
              return version;
          }
          else
          {
              return artifact.getVersion();
          }
      }
  
      // Revise these three methods when MRESOLVER-233 is delivered
      @Override
      public Artifact setVersion( String version )
      {
           String current = getVersion();
           if ( current.equals( version ) || ( version == null && current.length() <= 0 ) )
           {
               return this;
          }
         return new RelocatedArtifact( artifact, groupId, artifactId, version, message );
     }
 
     @Override
     public Artifact setFile( File file )
     {
         File current = getFile();
         if ( Objects.equals( current, file ) )
         {
              return this;
         }
         return new RelocatedArtifact( artifact.setFile( file ), groupId, artifactId, version, message );
     }
 
     @Override
     public Artifact setProperties( Map<String, String> properties )
     {
         Map<String, String> current = getProperties();
         if ( current.equals( properties ) || ( properties == null && current.isEmpty() ) )
         {
              return this;
         }
         return new RelocatedArtifact( artifact.setProperties( properties ), groupId, artifactId, version, message );
     }
 
     public String getClassifier()
     {
         return artifact.getClassifier();
     }
 
     public String getExtension()
     {
         return artifact.getExtension();
     }
 
     public File getFile()
     {
         return artifact.getFile();
     }
 
     public String getProperty( String key, String defaultValue )
     {
         return artifact.getProperty( key, defaultValue );
     }
 
     public Map<String, String> getProperties()
     {
         return artifact.getProperties();
     }
 
     public String getMessage()
     {
         return message;
     }
 }