package org.apache.archiva.configuration;
   
   /*
    * 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.common.FileTypeUtils;
  import org.apache.archiva.configuration.functors.FiletypeSelectionPredicate;
  import org.apache.archiva.configuration.io.registry.ConfigurationRegistryReader;
  import org.apache.archiva.configuration.util.PathMatcher;
  import org.apache.archiva.components.registry.Registry;
  import org.apache.archiva.components.registry.RegistryException;
  import org.apache.archiva.components.registry.RegistryListener;
  import org.apache.archiva.components.registry.commons.CommonsConfigurationRegistry;
  import org.apache.commons.collections4.CollectionUtils;
  import org.apache.commons.collections4.IterableUtils;
  import org.apache.commons.collections4.Predicate;
  import org.apache.commons.configuration.CombinedConfiguration;
  import org.springframework.stereotype.Service;
  
  import javax.annotation.PostConstruct;
  import javax.inject.Inject;
  import javax.inject.Named;
  import java.lang.reflect.Field;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * FileTypes
   */
  @Service("fileTypes")
  public class FileTypes
      implements RegistryListener
  {
      public static final String ARTIFACTS = "artifacts";
  
      public static final String AUTO_REMOVE = "auto-remove";
  
      public static final String INDEXABLE_CONTENT = "indexable-content";
  
      public static final String IGNORED = "ignored";
  
      @Inject
      @Named(value = "archivaConfiguration#default")
      private ArchivaConfiguration archivaConfiguration;
  
  
      public FileTypes() {
  
      }
  
      /**
       * Map of default values for the file types.
       */
      private Map<String, List<String>> defaultTypeMap = new HashMap<>();
  
      private List<String> artifactPatterns;
  
      /**
       * Default exclusions from artifact consumers that are using the file types. Note that this is simplistic in the
       * case of the support files (based on extension) as it is elsewhere - it may be better to match these to actual
       * artifacts and exclude later during scanning.
       *
       * @deprecated
       */
      public static final List<String> DEFAULT_EXCLUSIONS = FileTypeUtils.DEFAULT_EXCLUSIONS;
  
      public void setArchivaConfiguration( ArchivaConfiguration archivaConfiguration )
      {
          this.archivaConfiguration = archivaConfiguration;
      }
  
      /**
       * Get the list of patterns for a specified filetype.
       * You will always get a list.  In this order.
       * <ul>
       * <li>The Configured List</li>
       * <li>The Default List</li>
       * <li>A single item list of <code>&quot;**&#47;*&quot;</code></li>
       * </ul>
       *
      * @param id the id to lookup.
      * @return the list of patterns.
      */
     public List<String> getFileTypePatterns( String id )
     {
         Configuration config = archivaConfiguration.getConfiguration();
         Predicate selectedFiletype = new FiletypeSelectionPredicate( id );
         RepositoryScanningConfiguration repositoryScanningConfiguration = config.getRepositoryScanning();
         if ( repositoryScanningConfiguration != null )
         {
             FileType filetype =
                 IterableUtils.find( config.getRepositoryScanning().getFileTypes(), selectedFiletype );
 
             if ( ( filetype != null ) && CollectionUtils.isNotEmpty( filetype.getPatterns() ) )
             {
                 return filetype.getPatterns();
             }
         }
         List<String> defaultPatterns = defaultTypeMap.get( id );
 
         if ( CollectionUtils.isEmpty( defaultPatterns ) )
         {
             return Collections.singletonList( "**/*" );
         }
 
         return defaultPatterns;
     }
 
     public synchronized boolean matchesArtifactPattern( String relativePath )
     {
         // Correct the slash pattern.
         relativePath = relativePath.replace( '\\', '/' );
 
         if ( artifactPatterns == null )
         {
             artifactPatterns = getFileTypePatterns( ARTIFACTS );
         }
 
         for ( String pattern : artifactPatterns )
         {
             if ( PathMatcher.matchPath( pattern, relativePath, false ) )
             {
                 // Found match
                 return true;
             }
         }
 
         // No match.
         return false;
     }
 
     public boolean matchesDefaultExclusions( String relativePath )
     {
         // Correct the slash pattern.
         relativePath = relativePath.replace( '\\', '/' );
 
         for ( String pattern : DEFAULT_EXCLUSIONS )
         {
             if ( PathMatcher.matchPath( pattern, relativePath, false ) )
             {
                 // Found match
                 return true;
             }
         }
 
         // No match.
         return false;
     }
 
     @PostConstruct
     public void initialize()
     {
         // TODO: why is this done by hand?
 
         // TODO: ideally, this would be instantiated by configuration instead, and not need to be a component
 
         String errMsg = "Unable to load default archiva configuration for FileTypes: ";
 
         try
         {
             CommonsConfigurationRegistry commonsRegistry = new CommonsConfigurationRegistry();
 
             // Configure commonsRegistry
             Field fld = commonsRegistry.getClass().getDeclaredField( "configuration" );
             fld.setAccessible( true );
             fld.set( commonsRegistry, new CombinedConfiguration() );
             commonsRegistry.addConfigurationFromResource( "org/apache/archiva/configuration/default-archiva.xml" );
 
             // Read configuration as it was intended.
             ConfigurationRegistryReaderionRegistryReader.html#ConfigurationRegistryReader">ConfigurationRegistryReader configReader = new ConfigurationRegistryReader();
             Configuration defaultConfig = configReader.read( commonsRegistry );
 
             initialiseTypeMap( defaultConfig );
         }
         catch ( RegistryException e )
         {
             throw new RuntimeException( errMsg + e.getMessage(), e );
         }
         catch ( SecurityException e )
         {
             throw new RuntimeException( errMsg + e.getMessage(), e );
         }
         catch ( NoSuchFieldException e )
         {
             throw new RuntimeException( errMsg + e.getMessage(), e );
         }
         catch ( IllegalArgumentException e )
         {
             throw new RuntimeException( errMsg + e.getMessage(), e );
         }
         catch ( IllegalAccessException e )
         {
             throw new RuntimeException( errMsg + e.getMessage(), e );
         }
 
         this.archivaConfiguration.addChangeListener( this );
     }
 
     private void initialiseTypeMap( Configuration configuration )
     {
         defaultTypeMap.clear();
 
         // Store the default file type declaration.
         List<FileType> filetypes = configuration.getRepositoryScanning().getFileTypes();
         for ( FileType filetype : filetypes )
         {
             List<String> patterns = defaultTypeMap.get( filetype.getId() );
             if ( patterns == null )
             {
                 patterns = new ArrayList<>( filetype.getPatterns().size() );
             }
             patterns.addAll( filetype.getPatterns() );
 
             defaultTypeMap.put( filetype.getId(), patterns );
         }
     }
 
     @Override
     public void afterConfigurationChange( Registry registry, String propertyName, Object propertyValue )
     {
         if ( propertyName.contains( "fileType" ) )
         {
             artifactPatterns = null;
 
             initialiseTypeMap( archivaConfiguration.getConfiguration() );
         }
     }
 
     @Override
     public void beforeConfigurationChange( Registry registry, String propertyName, Object propertyValue )
     {
         /* nothing to do */
     }
 }