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>

  * @version $Id: LocalCheckOutCommand.java 1054738 2011-01-03 20:40:39Z olamy $

  */

 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;

     }

 }