package org.apache.maven.scm.provider.jazz.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.ScmFile;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.log.ScmLogger;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.jazz.command.consumer.AbstractRepositoryConsumer;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   * Consume the output of the scm command for the "acept" operation.
   *
   * @author <a href="mailto:ChrisGWarp@gmail.com">Chris Graham</a>
   */
  public class JazzUpdateConsumer
      extends AbstractRepositoryConsumer
  {
      /**
       * The "Update" command status flag for a resource that has been added.
       */
      public static final String UPDATE_CMD_ADD_FLAG = "-a-";
  
      /**
       * The "Update" command status flag for when the content or properties of a file have been modified, or the
       * properties of a directory have changed.
       */
      public static final String UPDATE_CMD_CHANGE_FLAG = "--c";
  
      /**
       * The "Update" command status flag for a resource that has been deleted.
       */
      public static final String UPDATE_CMD_DELETE_FLAG = "-d-";
  
      /**
       * The "Update" command status flag for a resource that has been renamed or moved.
       */
      public static final String UPDATE_CMD_MOVED_FLAG = "-m-";
  
      private List<ScmFile> fUpdatedFiles = new ArrayList<ScmFile>();
  
      /**
       * Construct the JazzUpdateCommand consumer.
       *
       * @param repository The repository we are working with.
       * @param logger     The logger to use.
       */
      public JazzUpdateConsumer( ScmProviderRepository repository, ScmLogger logger )
      {
          super( repository, logger );
      }
  
      /**
       * Process one line of output from the execution of the "scm xxxx" command.
       *
       * @param line The line of output from the external command that has been pumped to us.
       * @see org.codehaus.plexus.util.cli.StreamConsumer#consumeLine(java.lang.String)
       */
      public void consumeLine( String line )
      {
          super.consumeLine( line );
          if ( containsStatusFlag( line ) )
          {
              extractUpdatedFile( line );
          }
      }
  
      private boolean containsStatusFlag( String line )
      {
          boolean containsStatusFlag = false;
  
          if ( line.trim().length() > 3 )
          {
              String flag = line.trim().substring( 0, 3 );
              if ( UPDATE_CMD_ADD_FLAG.equals( flag ) || UPDATE_CMD_CHANGE_FLAG.equals( flag )
                  || UPDATE_CMD_DELETE_FLAG.equals( flag ) || UPDATE_CMD_MOVED_FLAG.equals( flag ) )
              {
                 containsStatusFlag = true;
             }
         }
         return containsStatusFlag;
     }
 
     private void extractUpdatedFile( String line )
     {
         String filePath = "";
         String flag = line.trim().substring( 0, 3 );
         ScmFileStatus status = ScmFileStatus.UNKNOWN;
 
         if ( UPDATE_CMD_ADD_FLAG.equals( flag ) )
         {
             status = ScmFileStatus.ADDED;
             filePath = line.trim().substring( 4 );
         }
 
         if ( UPDATE_CMD_CHANGE_FLAG.equals( flag ) )
         {
             status = ScmFileStatus.UPDATED;
             filePath = line.trim().substring( 4 );
         }
 
         if ( UPDATE_CMD_DELETE_FLAG.equals( flag ) )
         {
             status = ScmFileStatus.DELETED;
             filePath = line.trim().substring( 4 );
         }
 
         // TODO - It looks like there is a defect in RTC 2.0 SCM for moved (the "moved from <path> is not right)
         // TODO - Also it looks like if you rename a file, the output shows the old name as changed, however it should
         // be marked as deleted. (see if this is the case in RTC 3.0)
         if ( UPDATE_CMD_MOVED_FLAG.equals( flag ) )
         {
             status = ScmFileStatus.ADDED;
             String pattern = "^" + UPDATE_CMD_MOVED_FLAG + "\\s(.*)\\s\\(moved\\sfrom\\s.*$";
             Pattern r = Pattern.compile( pattern );
             Matcher m = r.matcher( line.trim() );
             if ( m.find() )
             {
                 filePath = m.group( 1 );
             }
         }
 
         fUpdatedFiles.add( new ScmFile( filePath, status ) );
     }
 
     public List<ScmFile> getUpdatedFiles()
     {
         return fUpdatedFiles;
     }
 
 }