package org.apache.maven.scm.provider.accurev.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 java.io.File;
  import java.util.Date;
  import java.util.List;
  
  import org.apache.maven.scm.CommandParameter;
  import org.apache.maven.scm.CommandParameters;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.ScmResult;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.update.UpdateScmResult;
  import org.apache.maven.scm.log.ScmLogger;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.accurev.AccuRev;
  import org.apache.maven.scm.provider.accurev.AccuRevException;
  import org.apache.maven.scm.provider.accurev.AccuRevInfo;
  import org.apache.maven.scm.provider.accurev.AccuRevScmProviderRepository;
  import org.apache.maven.scm.provider.accurev.AccuRevVersion;
  import org.apache.maven.scm.provider.accurev.command.AbstractAccuRevCommand;
  
  /**
   * 
   */
  public class AccuRevUpdateCommand
      extends AbstractAccuRevCommand
  {
  
      public AccuRevUpdateCommand( ScmLogger logger )
      {
          super( logger );
      }
  
      @Override
      protected ScmResult executeAccurevCommand( AccuRevScmProviderRepository repository, ScmFileSet fileSet,
                                                 CommandParameters parameters )
          throws ScmException, AccuRevException
      {
  
          AccuRev accuRev = repository.getAccuRev();
  
          File basedir = fileSet.getBasedir();
  
          AccuRevInfo info = accuRev.info( basedir );
  
          if ( !info.isWorkSpace() )
          {
              throw new AccuRevException( "No workspace at " + basedir.getAbsolutePath() );
          }
  
          String startRevision = getStartRevision( repository, parameters, info );
  
          ScmVersion scmVersion = parameters.getScmVersion( CommandParameter.SCM_VERSION, null );
  
          String updateTransactionId = null;
  
          if ( scmVersion != null )
          {
              AccuRevVersion updateVersion = repository.getAccuRevVersion( scmVersion );
  
              // Reparent if necessary
              String newBasisStream = updateVersion.getBasisStream();
              if ( newBasisStream != null
                  && ( !( newBasisStream.equals( info.getWorkSpace() ) || newBasisStream.equals( info.getBasis() ) ) ) )
              {
                  getLogger().info( "Reparenting " + info.getWorkSpace() + " to " + newBasisStream );
                  accuRev.chws( basedir, info.getWorkSpace(), newBasisStream );
              }
  
              if ( !updateVersion.isNow() )
              {
                  updateTransactionId = updateVersion.getTimeSpec();
              }
          }
  
          if ( updateTransactionId == null )
          {
              updateTransactionId = repository.getDepotTransactionId( info.getWorkSpace(), "now" );
         }
 
         String endRevision = repository.getRevision( info.getWorkSpace(), updateTransactionId );
 
         List<File> updatedFiles = accuRev.update( basedir, updateTransactionId );
 
         if ( updatedFiles != null )
         {
             return new AccuRevUpdateScmResult( accuRev.getCommandLines(), getScmFiles( updatedFiles,
                                                                                        ScmFileStatus.UPDATED ),
                                                startRevision, endRevision );
         }
         else
         {
             return new AccuRevUpdateScmResult( accuRev.getCommandLines(), "AccuRev error", accuRev.getErrorOutput(),
                                                null, null, false );
         }
     }
 
     /*
      * If we are not capturing info for a changelog then we don't need a start revision. Start date is used if supplied
      * otherwise get the current high water mark for the workspace as the start version.
      */
     private String getStartRevision( AccuRevScmProviderRepository repository, CommandParameters parameters,
                                      AccuRevInfo info )
         throws ScmException, AccuRevException
     {
 
         boolean runChangeLog = parameters.getBoolean( CommandParameter.RUN_CHANGELOG_WITH_UPDATE );
         Date startDate = parameters.getDate( CommandParameter.START_DATE, null );
         String workspace = info.getWorkSpace();
 
         if ( !runChangeLog )
         {
             return null;
         }
         else
         {
             return startDate == null ? repository.getWorkSpaceRevision( workspace )
                             : repository.getRevision( workspace, startDate );
         }
 
     }
 
     public UpdateScmResult update( ScmProviderRepository repository, ScmFileSet fileSet, CommandParameters parameters )
         throws ScmException
     {
         return (UpdateScmResult) execute( repository, fileSet, parameters );
     }
 
 }