package org.apache.continuum.purge.executor;
   
   /*
    * 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 org.apache.continuum.purge.ContinuumPurgeConstants;
  import org.apache.continuum.purge.repository.content.RepositoryManagedContent;
  import org.apache.maven.archiva.consumers.core.repository.ArtifactFilenameFilter;
  import org.apache.maven.archiva.model.ArtifactReference;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.File;
  import java.io.FilenameFilter;
  import java.util.Set;
  
  /**
   * Some codes were taken from Archiva.
   *
   * @author Maria Catherine Tan
   */
  public abstract class AbstractContinuumPurgeExecutor
      implements ContinuumPurgeExecutor
  {
      private static final Logger log = LoggerFactory.getLogger( AbstractContinuumPurgeExecutor.class );
  
      public void purge( Set<ArtifactReference> references, RepositoryManagedContent repository )
      {
          if ( references != null && !references.isEmpty() )
          {
              for ( ArtifactReference reference : references )
              {
                  File artifactFile = repository.toFile( reference );
                  artifactFile.delete();
                  log.info( ContinuumPurgeConstants.PURGE_ARTIFACT + " - " + artifactFile.getName() );
                  purgeSupportFiles( artifactFile, artifactFile.getName() );
                  // purge maven metadata
                  purgeSupportFiles( artifactFile.getParentFile(), "maven-metadata" );
              }
          }
      }
  
      /**
       * <p>
       * This find support files for the artifactFile and deletes them.
       * </p>
       * <p>
       * Support Files are things like ".sha1", ".md5", ".asc", etc.
       * </p>
       *
       * @param artifactFile the file to base off of.
       */
      protected void purgeSupportFiles( File artifactFile, String filename )
      {
          File parentDir = artifactFile.getParentFile();
  
          if ( !parentDir.exists() )
          {
              return;
          }
  
          FilenameFilter filter = new ArtifactFilenameFilter( filename );
  
          File[] files = parentDir.listFiles( filter );
  
          for ( File file : files )
          {
              if ( file.exists() && file.isFile() )
              {
                  file.delete();
                  log.info( ContinuumPurgeConstants.PURGE_FILE + " - " + file.getName() );
              }
          }
      }
  }