package org.apache.maven.scm.provider.bazaar.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.util.ArrayList;
  import java.util.Arrays;
  import java.util.Date;
  import java.util.List;
  
  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.ScmResult;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.Command;
  import org.apache.maven.scm.command.changelog.AbstractChangeLogCommand;
  import org.apache.maven.scm.command.changelog.ChangeLogScmRequest;
  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.bazaar.BazaarUtils;
  import org.apache.maven.scm.provider.bazaar.command.BazaarConstants;
  
  /**
   * @author <a href="mailto:torbjorn@smorgrav.org">Torbjorn Eikli Smorgrav</a>
   * @author Olivier Lamy
   *
   */
  public class BazaarChangeLogCommand
      extends AbstractChangeLogCommand
      implements Command
  {
      /**
       * {@inheritDoc}
       */
      @Override
      protected ChangeLogScmResult executeChangeLogCommand( ChangeLogScmRequest request )
          throws ScmException
      {
          final ScmVersion startVersion = request.getStartRevision();
          final ScmVersion endVersion = request.getEndRevision();
          final ScmFileSet fileSet = request.getScmFileSet();
          final String datePattern = request.getDatePattern();
          if ( startVersion != null || endVersion != null )
          {
              final ScmProviderRepository scmProviderRepository = request.getScmRepository().getProviderRepository();
              return executeChangeLogCommand( scmProviderRepository, fileSet, startVersion, endVersion, datePattern );
          }
          return executeChangeLogCommand( fileSet, request.getStartDate(), request.getEndDate(),
              datePattern, request.getLimit() );
      }
  
      /** {@inheritDoc} */
      protected ChangeLogScmResult executeChangeLogCommand( ScmProviderRepository repo, ScmFileSet fileSet,
                                                            Date startDate, Date endDate, ScmBranch branch,
                                                            String datePattern )
          throws ScmException
      {
          return executeChangeLogCommand( fileSet, startDate, endDate, datePattern, null );
      }
  
      private ChangeLogScmResult executeChangeLogCommand( ScmFileSet fileSet,
                                                          Date startDate, Date endDate,
                                                          String datePattern, Integer limit )
          throws ScmException
      {
          List<String> cmd = new ArrayList<String>();
          cmd.addAll( Arrays.asList( BazaarConstants.LOG_CMD, BazaarConstants.VERBOSE_OPTION ) );
          if ( limit != null && limit > 0 )
          {
              cmd.add( BazaarConstants.LIMIT_OPTION );
              cmd.add( Integer.toString( limit ) );
          }
  
          BazaarChangeLogConsumer consumer = new BazaarChangeLogConsumer( getLogger(), datePattern );
          ScmResult result = BazaarUtils.execute( consumer, getLogger(), fileSet.getBasedir(),
              cmd.toArray( new String[cmd.size()] ) );
  
          List<ChangeSet> logEntries = consumer.getModifications();
          List<ChangeSet> inRangeAndValid = new ArrayList<ChangeSet>();
          startDate = startDate == null ? new Date( 0 ) : startDate; //From 1. Jan 1970
         endDate = endDate == null ? new Date() : endDate; //Upto now
 
         for ( ChangeSet change : logEntries )
         {
             if ( change.getFiles().size() > 0 )
             {
                 if ( !change.getDate().before( startDate ) && !change.getDate().after( endDate ) )
                 {
                     inRangeAndValid.add( change );
                 }
             }
         }
 
         ChangeLogSet changeLogSet = new ChangeLogSet( inRangeAndValid, startDate, endDate );
         return new ChangeLogScmResult( changeLogSet, result );
     }
 }