package org.apache.maven.resolver.internal.ant.types;
   
   /*
    * 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.Collections;
  import java.util.List;
  
  import org.apache.maven.resolver.internal.ant.ProjectWorkspaceReader;
  import org.apache.maven.resolver.internal.ant.tasks.RefTask;
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.Task;
  import org.apache.tools.ant.types.Reference;
  
  /**
   */
  public class Artifact
      extends RefTask
      implements ArtifactContainer
  {
  
      private File file;
  
      private String type;
  
      private String classifier;
  
      private Pom pom;
  
      protected Artifact getRef()
      {
          return (Artifact) getCheckedRef();
      }
  
      public void validate( Task task )
      {
          if ( isReference() )
          {
              getRef().validate( task );
          }
          else
          {
              if ( file == null )
              {
                  throw new BuildException( "You must specify the 'file' for the artifact" );
              }
              else if ( !file.isFile() )
              {
                  throw new BuildException( "The artifact file " + file + " does not exist" );
              }
              if ( type == null || type.length() <= 0 )
              {
                  throw new BuildException( "You must specify the 'type' for the artifact" );
              }
          }
      }
  
      public void setRefid( Reference ref )
      {
          if ( file != null || type != null || classifier != null )
          {
              throw tooManyAttributes();
          }
          super.setRefid( ref );
      }
  
      public File getFile()
      {
          if ( isReference() )
          {
              return getRef().getFile();
          }
          return file;
      }
  
      public void setFile( File file )
      {
          checkAttributesAllowed();
          this.file = file;
  
          if ( file != null && type == null )
          {
             String name = file.getName();
             int period = name.lastIndexOf( '.' );
             if ( period >= 0 )
             {
                 type = name.substring( period + 1 );
             }
         }
     }
 
     public String getType()
     {
         if ( isReference() )
         {
             return getRef().getType();
         }
         return ( type != null ) ? type : "jar";
     }
 
     public void setType( String type )
     {
         checkAttributesAllowed();
         this.type = type;
     }
 
     public String getClassifier()
     {
         if ( isReference() )
         {
             return getRef().getClassifier();
         }
         return ( classifier != null ) ? classifier : "";
     }
 
     public void setClassifier( String classifier )
     {
         checkAttributesAllowed();
         this.classifier = classifier;
     }
 
     public void setPomRef( Reference ref )
     {
         checkAttributesAllowed();
         Pom pom = new Pom();
         pom.setProject( getProject() );
         pom.setRefid( ref );
         this.pom = pom;
     }
 
     public void addPom( Pom pom )
     {
         checkChildrenAllowed();
         this.pom = pom;
     }
 
     public Pom getPom()
     {
         if ( isReference() )
         {
             return getRef().getPom();
         }
         return pom;
     }
 
     public List<Artifact> getArtifacts()
     {
         return Collections.singletonList( this );
     }
 
     @Override
     public void execute()
         throws BuildException
     {
         ProjectWorkspaceReader.getInstance().addArtifact( this );
     }
 
     public String toString()
     {
         String pomRepr = getPom() != null ? "(" + getPom().toString() + ":)" : "";
         return String.format( pomRepr + "%s:%s", getType(), getClassifier() );
     }
 
 }