package org.apache.maven.scm.provider.local.command.checkin;
   
   /*
    * 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.checkin.AbstractCheckInCommand;
  import org.apache.maven.scm.command.checkin.CheckInScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.local.command.LocalCommand;
  import org.apache.maven.scm.provider.local.repository.LocalScmProviderRepository;
  import org.codehaus.plexus.util.FileUtils;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
   *
   */
  public class LocalCheckInCommand
      extends AbstractCheckInCommand
      implements LocalCommand
  {
      /** {@inheritDoc} */
      protected CheckInScmResult executeCheckInCommand( ScmProviderRepository repo, ScmFileSet fileSet, String message,
                                                        ScmVersion version )
          throws ScmException
      {
          LocalScmProviderRepository repository = (LocalScmProviderRepository) repo;
  
          if ( version != null && StringUtils.isNotEmpty( version.getName() ) )
          {
              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 ( !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<ScmFile> checkedInFiles = new ArrayList<ScmFile>();
  
          try
          {
              // Only copy files newer than in the repo
              File repoRoot = new File( repository.getRoot(), repository.getModule() );
  
              List<File> files = fileSet.getFileList();
  
              if ( files.isEmpty() )
              {
                  @SuppressWarnings( "unchecked" )
                  List<File> listFiles = FileUtils.getFiles( baseDestination, "**", null, false ); 
                 
                  files = listFiles;
              }
 
             for ( File file : files )
             {
                 String path = file.getPath().replace( '\\', '/' );
                 File repoFile = new File( repoRoot, path );
                 file = new File( baseDestination, path );
 
                 ScmFileStatus status;
 
                 if ( repoFile.exists() )
                 {
                     String repoFileContents = FileUtils.fileRead( repoFile );
 
                     String fileContents = FileUtils.fileRead( file );
 
                     if ( getLogger().isDebugEnabled() )
                     {
                         getLogger().debug( "fileContents:" + fileContents );
                         getLogger().debug( "repoFileContents:" + repoFileContents );
                     }
                     if ( fileContents.equals( repoFileContents ) )
                     {
                         continue;
                     }
 
                     status = ScmFileStatus.CHECKED_IN;
                 }
                 else if ( repository.isFileAdded( path ) )
                 {
                     status = ScmFileStatus.CHECKED_IN;
                 }
                 else
                 {
                     if ( getLogger().isWarnEnabled() )
                     {
                         getLogger().warn( "skipped unknown file in checkin:" + path );
                     }
                     // unknown file, skip
                     continue;
                 }
 
                 FileUtils.copyFile( file, repoFile );
                 ScmFile scmFile = new ScmFile( path, status );
                 getLogger().info( scmFile.toString() );
                 checkedInFiles.add( scmFile );
             }
         }
         catch ( IOException ex )
         {
             throw new ScmException( "Error while checking in the files.", ex );
         }
 
         return new CheckInScmResult( null, checkedInFiles );
     }
 }