package org.apache.maven.scm.provider.local.command.checkout;
   
   /*
    * 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.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.checkout.AbstractCheckOutCommand;
  import org.apache.maven.scm.command.checkout.CheckOutScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.local.command.LocalCommand;
  import org.apache.maven.scm.provider.local.metadata.LocalScmMetadataUtils;
  import org.apache.maven.scm.provider.local.repository.LocalScmProviderRepository;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
   *
   */
  public class LocalCheckOutCommand
      extends AbstractCheckOutCommand
      implements LocalCommand
  {
      /** {@inheritDoc} */
      protected CheckOutScmResult executeCheckOutCommand( ScmProviderRepository repo, ScmFileSet fileSet,
                                                          ScmVersion version, boolean recursive )
          throws ScmException
      {
          LocalScmProviderRepository repository = (LocalScmProviderRepository) repo;
  
          if ( version != null )
          {
              throw new ScmException( "The local scm doesn't support tags." );
          }
  
          File root = new File( repository.getRoot() );
  
          String module = repository.getModule();
  
          File source = new File( root, module );
  
          File baseDestination = fileSet.getBasedir();
  
          if ( !root.exists() )
          {
              throw new ScmException( "The base directory doesn't exist (" + root.getAbsolutePath() + ")." );
          }
  
          if ( !source.exists() )
          {
              throw new ScmException( "The module directory doesn't exist (" + source.getAbsolutePath() + ")." );
          }
  
          List<ScmFile> checkedOutFiles;
  
          try
          {
              if ( baseDestination.exists() )
              {
                  FileUtils.deleteDirectory( baseDestination );
              }
  
              if ( !baseDestination.mkdirs() )
              {
                  throw new ScmException(
                      "Could not create destination directory '" + baseDestination.getAbsolutePath() + "'." );
              }
  
              if ( getLogger().isInfoEnabled() )
              {
                  getLogger().info(
                                    "Checking out '" + source.getAbsolutePath() + "' to '"
                                        + baseDestination.getAbsolutePath() + "'." );
              }
  
             List<File> fileList;
 
             if ( fileSet.getFileList().isEmpty() )
             {
                 @SuppressWarnings( "unchecked" )
                 List<File> files = FileUtils.getFiles( source.getAbsoluteFile(), "**", null ); 
                 fileList = files;
             }
             else
             {
                 fileList = fileSet.getFileList();
             }
 
             checkedOutFiles = checkOut( source, baseDestination, fileList, repository.getModule() );
 
             // write metadata file
             LocalScmMetadataUtils metadataUtils = new LocalScmMetadataUtils( getLogger() );
             metadataUtils.writeMetadata( baseDestination, metadataUtils.buildMetadata( source ) );
         }
         catch ( IOException ex )
         {
             throw new ScmException( "Error while checking out the files.", ex );
         }
 
         return new LocalCheckOutScmResult( null, checkedOutFiles );
     }
 
     private List<ScmFile> checkOut( File source, File baseDestination, List<File> files, String module )
         throws ScmException, IOException
     {
         String sourcePath = source.getAbsolutePath();
 
         List<ScmFile> checkedOutFiles = new ArrayList<ScmFile>();
 
         for ( File file : files )
         {
             String dest = file.getAbsolutePath();
 
             dest = dest.substring( sourcePath.length() + 1 );
 
             File destination = new File( baseDestination, dest );
 
             destination = destination.getParentFile();
 
             if ( !destination.exists() && !destination.mkdirs() )
             {
                 throw new ScmException(
                     "Could not create destination directory '" + destination.getAbsolutePath() + "'." );
             }
 
             FileUtils.copyFileToDirectory( file, destination );
 
             File parent = file.getParentFile();
 
             // TODO: Add more excludes here
             if ( parent != null && parent.getName().equals( "CVS" ) )
             {
                 continue;
             }
 
             String fileName = "/" + module + "/" + dest;
 
             checkedOutFiles.add( new ScmFile( fileName, ScmFileStatus.CHECKED_OUT ) );
         }
 
         return checkedOutFiles;
     }
 
 
 }