package org.apache.archiva.consumers.core;
   
   /*
    * 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.archiva.admin.model.beans.ManagedRepository;
  import org.apache.archiva.checksum.ChecksumAlgorithm;
  import org.apache.archiva.checksum.ChecksummedFile;
  import org.apache.archiva.configuration.ArchivaConfiguration;
  import org.apache.archiva.configuration.FileTypes;
  import org.apache.archiva.consumers.AbstractMonitoredConsumer;
  import org.apache.archiva.consumers.ConsumerException;
  import org.apache.archiva.consumers.KnownRepositoryContentConsumer;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.context.annotation.Scope;
  import org.springframework.stereotype.Service;
  
  import javax.annotation.PostConstruct;
  import javax.inject.Inject;
  import java.io.File;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  /**
   * ArtifactMissingChecksumsConsumer - Create missing and/or fix invalid checksums for the artifact.
   */
  @Service( "knownRepositoryContentConsumer#create-missing-checksums" )
  @Scope( "prototype" )
  public class ArtifactMissingChecksumsConsumer
      extends AbstractMonitoredConsumer
      implements KnownRepositoryContentConsumer
      // it's prototype bean so we assume configuration won't change during a run
      //, RegistryListener
  {
  
      private Logger log = LoggerFactory.getLogger( ArtifactMissingChecksumsConsumer.class );
  
      private String id = "create-missing-checksums";
  
      private String description = "Create Missing and/or Fix Invalid Checksums (.sha1, .md5)";
  
      private ArchivaConfiguration configuration;
  
      private FileTypes filetypes;
  
      private ChecksummedFile checksum;
  
      private static final String TYPE_CHECKSUM_NOT_FILE = "checksum-bad-not-file";
  
      private static final String TYPE_CHECKSUM_CANNOT_CALC = "checksum-calc-failure";
  
      private static final String TYPE_CHECKSUM_CANNOT_CREATE = "checksum-create-failure";
  
      private File repositoryDir;
  
      private List<String> includes = new ArrayList<>( 0 );
  
      @Inject
      public ArtifactMissingChecksumsConsumer( ArchivaConfiguration configuration, FileTypes filetypes )
      {
          this.configuration = configuration;
          this.filetypes = filetypes;
  
          //configuration.addChangeListener( this );
  
          initIncludes( );
      }
  
      @Override
      public String getId( )
      {
          return this.id;
      }
  
      @Override
      public String getDescription( )
      {
          return this.description;
      }
  
     @Override
     public void beginScan( ManagedRepository repo, Date whenGathered )
         throws ConsumerException
     {
         this.repositoryDir = new File( repo.getLocation( ) );
     }
 
     @Override
     public void beginScan( ManagedRepository repo, Date whenGathered, boolean executeOnEntireRepo )
         throws ConsumerException
     {
         beginScan( repo, whenGathered );
     }
 
     @Override
     public void completeScan( )
     {
         /* do nothing */
     }
 
     @Override
     public void completeScan( boolean executeOnEntireRepo )
     {
         completeScan( );
     }
 
     @Override
     public List<String> getExcludes( )
     {
         return getDefaultArtifactExclusions( );
     }
 
     @Override
     public List<String> getIncludes( )
     {
         return includes;
     }
 
     @Override
     public void processFile( String path )
         throws ConsumerException
     {
         createFixChecksum( path, ChecksumAlgorithm.SHA1 );
         createFixChecksum( path, ChecksumAlgorithm.MD5 );
     }
 
     @Override
     public void processFile( String path, boolean executeOnEntireRepo )
         throws ConsumerException
     {
         processFile( path );
     }
 
     private void createFixChecksum( String path, ChecksumAlgorithm checksumAlgorithm )
     {
         File artifactFile = new File( this.repositoryDir, path );
         File checksumFile = new File( this.repositoryDir, path + "." + checksumAlgorithm.getExt( ) );
 
         // Checking for existence
         if (artifactFile.exists())
         {
             if ( checksumFile.exists( ) )
             {
                 checksum = new ChecksummedFile( artifactFile );
                 try
                 {
                     if ( !checksum.isValidChecksum( checksumAlgorithm ) )
                     {
                         checksum.fixChecksums( new ChecksumAlgorithm[]{checksumAlgorithm} );
                         log.info( "Fixed checksum file {}", checksumFile.getAbsolutePath( ) );
                         triggerConsumerInfo( "Fixed checksum file " + checksumFile.getAbsolutePath( ) );
                     }
                 }
                 catch ( IOException e )
                 {
                     log.error( "Cannot calculate checksum for file {} :", checksumFile, e );
                     triggerConsumerError( TYPE_CHECKSUM_CANNOT_CALC, "Cannot calculate checksum for file " + checksumFile +
                         ": " + e.getMessage( ) );
                 }
             }
             else if ( !checksumFile.exists( ) )
             {
                 checksum = new ChecksummedFile( artifactFile );
                 try
                 {
                     checksum.createChecksum( checksumAlgorithm );
                     log.info( "Created missing checksum file {}", checksumFile.getAbsolutePath( ) );
                     triggerConsumerInfo( "Created missing checksum file " + checksumFile.getAbsolutePath( ) );
                 }
                 catch ( IOException e )
                 {
                     log.error( "Cannot create {} checksum for file {} :", checksumAlgorithm, artifactFile, e );
                     triggerConsumerError( TYPE_CHECKSUM_CANNOT_CREATE, "Cannot create checksum for file " + checksumFile +
                         ": " + e.getMessage( ) );
                 }
             }
             else
             {
                 log.warn( "Checksum file {} is not a file. ", checksumFile.getAbsolutePath( ) );
                 triggerConsumerWarning( TYPE_CHECKSUM_NOT_FILE,
                     "Checksum file " + checksumFile.getAbsolutePath( ) + " is not a file." );
             }
         }
     }
 
     /*
     @Override
     public void afterConfigurationChange( Registry registry, String propertyName, Object propertyValue )
     {
         if ( ConfigurationNames.isRepositoryScanning( propertyName ) )
         {
             initIncludes();
         }
     }
 
 
     @Override
     public void beforeConfigurationChange( Registry registry, String propertyName, Object propertyValue )
     {
         // do nothing
     }
 
     */
 
     private void initIncludes( )
     {
         includes = new ArrayList<>( filetypes.getFileTypePatterns( FileTypes.ARTIFACTS ) );
 
     }
 
     @PostConstruct
     public void initialize( )
     {
         //configuration.addChangeListener( this );
 
         initIncludes( );
     }
 }