package org.apache.maven.scm.provider.local.command.changelog;

 /*

  * 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.Date;

 import java.util.List;

 import org.apache.maven.scm.ChangeFile;

 import org.apache.maven.scm.ChangeSet;

 import org.apache.maven.scm.ScmBranch;

 import org.apache.maven.scm.ScmException;

 import org.apache.maven.scm.ScmFileSet;

 import org.apache.maven.scm.command.changelog.AbstractChangeLogCommand;

 import org.apache.maven.scm.command.changelog.ChangeLogScmResult;

 import org.apache.maven.scm.command.changelog.ChangeLogSet;

 import org.apache.maven.scm.provider.ScmProviderRepository;

 import org.apache.maven.scm.provider.local.repository.LocalScmProviderRepository;

 import org.codehaus.plexus.util.FileUtils;

 /**

  * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>

  * @author Olivier Lamy

  * @version $Id: LocalChangeLogCommand.java 1054408 2011-01-02 14:05:25Z olamy $

  */

 public class LocalChangeLogCommand

     extends AbstractChangeLogCommand

 {

     /** {@inheritDoc} */

     protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repository, ScmFileSet fileSet,

                                                           Date startDate, Date endDate, ScmBranch branch,

                                                           String datePattern )

         throws ScmException

     {

         LocalScmProviderRepository repo = (LocalScmProviderRepository) repository;

         if ( branch != null )

         {

             throw new ScmException( "The local scm doesn't support tags." );

         }

         File root = new File( repo.getRoot() );

         String module = repo.getModule();

         File source = new File( root, module );

         File baseDestination = fileSet.getBasedir();

         if ( !baseDestination.exists() )

         {

             throw new ScmException(

                 "The working directory doesn't exist (" + baseDestination.getAbsolutePath() + ")." );

         }

         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<ChangeSet> changeLogList = new ArrayList<ChangeSet>();

         try

         {

             File repoRoot = new File( repo.getRoot(), repo.getModule() );

             List<File> files = fileSet.getFileList();

             if ( files.isEmpty() )

             {

                 @SuppressWarnings( "unchecked" )

                 List<File> fileList = FileUtils.getFiles( baseDestination, "**", null, false );

                 files = fileList;

             }

             for ( File file : files )

             {

                 String path = file.getPath().replace( '\\', '/' );

                 File repoFile = new File( repoRoot, path );

                 file = new File( baseDestination, path );

                 ChangeSet changeSet = new ChangeSet();

                 int chop = repoRoot.getAbsolutePath().length();

                 String fileName = "/" + repoFile.getAbsolutePath().substring( chop + 1 );

                 changeSet.addFile( new ChangeFile( fileName, null ) );

                 if ( repoFile.exists() )

                 {

                     long lastModified = repoFile.lastModified();

                     Date modifiedDate = new Date( lastModified );

                     if ( startDate != null )

                     {

                         if ( startDate.before( modifiedDate ) || startDate.equals( modifiedDate ) )

                         {

                             if ( endDate != null )

                             {

                                 if ( endDate.after( modifiedDate ) || endDate.equals( modifiedDate ) )

                                 {

                                     // nop

                                 }

                                 else

                                 {

                                     continue;

                                 }

                             }

                         }

                         else

                         {

                             continue;

                         }

                     }

                     changeSet.setDate( modifiedDate );

                     changeLogList.add( changeSet );

                 }

                 else

                 {

                     // This file is deleted

                     changeLogList.add( changeSet );

                 }

             }

         }

         catch ( IOException ex )

         {

             throw new ScmException( "Error while getting change logs.", ex );

         }

         return new ChangeLogScmResult( null, new ChangeLogSet( changeLogList, startDate, endDate ) );

     }

 }