package org.apache.maven.scm.provider.integrity.command.export;
   
   /*
    * 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 com.mks.api.response.APIException;
  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.export.AbstractExportCommand;
  import org.apache.maven.scm.command.export.ExportScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.integrity.ExceptionHandler;
  import org.apache.maven.scm.provider.integrity.Member;
  import org.apache.maven.scm.provider.integrity.repository.IntegrityScmProviderRepository;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  /**
   * MKS Integrity implementation for Maven's AbstractExportCommand
   * <br>Since the IntegrityCheckoutCommand creates a fresh Sandbox in the checkoutDirectory,
   * it does not make sense for the IntegrityExportCommand to essentially do the same thing.
   * <br>Hence, this command does not create a Sandbox, instead the entire project contents
   * are exported to the exportDirectory using the 'si projectco' command.
   * <br>This gives the user the option of exporting a fresh copy of the repository void of
   * any project.pj files
   *
   * @author <a href="mailto:cletus@mks.com">Cletus D'Souza</a>
   * @since 1.6
   */
  public class IntegrityExportCommand
      extends AbstractExportCommand
  {
      /**
       * {@inheritDoc}
       */
      @Override
      public ExportScmResult executeExportCommand( ScmProviderRepository repository, ScmFileSet fileSet,
                                                   ScmVersion scmVersion, String outputDirectory )
          throws ScmException
      {
          // First lets figure out where we need to export files to...
          String exportDir = outputDirectory;
          exportDir =
              ( ( null != exportDir && exportDir.length() > 0 ) ? exportDir : fileSet.getBasedir().getAbsolutePath() );
          // Let the user know where we're going to be exporting the files...
          getLogger().info( "Attempting to export files to " + exportDir );
          ExportScmResult result;
          IntegrityScmProviderRepository iRepo = (IntegrityScmProviderRepository) repository;
          try
          {
              // Lets set our overall export success flag
              boolean exportSuccess = true;
              // Perform a fresh checkout of each file in the member list...
              List<Member> projectMembers = iRepo.getProject().listFiles( exportDir );
              // Initialize the list of files we actually exported...
              List<ScmFile> scmFileList = new ArrayList<ScmFile>();
              for ( Iterator<Member> it = projectMembers.iterator(); it.hasNext(); )
              {
                  Member siMember = it.next();
                  try
                  {
                      getLogger().info( "Attempting to export file: " + siMember.getTargetFilePath() + " at revision "
                                            + siMember.getRevision() );
                      siMember.checkout( iRepo.getAPISession() );
                      scmFileList.add( new ScmFile( siMember.getTargetFilePath(), ScmFileStatus.UNKNOWN ) );
                  }
                  catch ( APIException ae )
                  {
                      exportSuccess = false;
                      ExceptionHandler eh = new ExceptionHandler( ae );
                      getLogger().error( "MKS API Exception: " + eh.getMessage() );
                      getLogger().debug( eh.getCommand() + " exited with return code " + eh.getExitCode() );
                  }
              }
              // Lets advice the user that we've checked out all the members
              getLogger().info(
                  "Exported " + scmFileList.size() + " files out of a total of " + projectMembers.size() + " files!" );
              if ( exportSuccess )
             {
                 result = new ExportScmResult( "si co", scmFileList );
             }
             else
             {
                 result = new ExportScmResult( "si co", "Failed to export all files!", "", exportSuccess );
             }
         }
         catch ( APIException aex )
         {
             ExceptionHandler eh = new ExceptionHandler( aex );
             getLogger().error( "MKS API Exception: " + eh.getMessage() );
             getLogger().debug( eh.getCommand() + " exited with return code " + eh.getExitCode() );
             result = new ExportScmResult( eh.getCommand(), eh.getMessage(), "Exit Code: " + eh.getExitCode(), false );
         }
 
         return result;
     }
 
 }