package org.apache.maven.scm.command.update;
   
   /*
    * 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 org.apache.maven.scm.ChangeSet;
  import org.apache.maven.scm.CommandParameter;
  import org.apache.maven.scm.CommandParameters;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmResult;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.AbstractCommand;
  import org.apache.maven.scm.command.changelog.ChangeLogCommand;
  import org.apache.maven.scm.command.changelog.ChangeLogScmResult;
  import org.apache.maven.scm.command.changelog.ChangeLogSet;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse </a>
   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
   *
   */
  public abstract class AbstractUpdateCommand
      extends AbstractCommand
  {
      protected abstract UpdateScmResult executeUpdateCommand( ScmProviderRepository repository, ScmFileSet fileSet,
                                                               ScmVersion scmVersion )
          throws ScmException;
  
      /** {@inheritDoc} */
      public ScmResult executeCommand( ScmProviderRepository repository, ScmFileSet fileSet,
                                       CommandParameters parameters )
          throws ScmException
      {
          ScmVersion scmVersion = parameters.getScmVersion( CommandParameter.SCM_VERSION, null );
  
          boolean runChangelog = Boolean.valueOf(
              parameters.getString( CommandParameter.RUN_CHANGELOG_WITH_UPDATE, "true" ) ).booleanValue();
  
          UpdateScmResult updateScmResult = executeUpdateCommand( repository, fileSet, scmVersion );
  
          List<ScmFile> filesList = updateScmResult.getUpdatedFiles();
  
          if ( !runChangelog )
          {
              return updateScmResult;
          }
  
          ChangeLogCommand changeLogCmd = getChangeLogCommand();
  
          if ( filesList != null && filesList.size() > 0 && changeLogCmd != null )
          {
              ChangeLogScmResult changeLogScmResult =
                  (ChangeLogScmResult) changeLogCmd.executeCommand( repository, fileSet, parameters );
  
              List<ChangeSet> changes = new ArrayList<ChangeSet>();
  
              ChangeLogSet changeLogSet = changeLogScmResult.getChangeLog();
  
              if ( changeLogSet != null )
              {
                  Date startDate = null;
  
                  try
                  {
                      startDate = parameters.getDate( CommandParameter.START_DATE );
                  }
                  catch ( ScmException e )
                  {
                      //Do nothing, startDate isn't define.
                  }
  
                  for ( ChangeSet change : changeLogSet.getChangeSets() )
                  {
                      if ( startDate != null && change.getDate() != null )
                      {
                          if ( startDate.after( change.getDate() ) )
                         {
                             continue;
                         }
                     }
 
                     for ( ScmFile currentFile : filesList )
                     {
                         if ( change.containsFilename( currentFile.getPath() ) )
                         {
                             changes.add( change );
 
                             break;
                         }
                     }
                 }
             }
 
             updateScmResult.setChanges( changes );
         }
 
         return updateScmResult;
     }
 
     protected abstract ChangeLogCommand getChangeLogCommand();
 }