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;

     }

 }