package org.apache.maven.scm.plugin;

 /*

  * 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.plugin.MojoExecutionException;

 import org.apache.maven.scm.ChangeSet;

 import org.apache.maven.scm.ScmBranch;

 import org.apache.maven.scm.ScmException;

 import org.apache.maven.scm.ScmVersion;

 import org.apache.maven.scm.command.changelog.ChangeLogScmResult;

 import org.apache.maven.scm.command.changelog.ChangeLogSet;

 import org.apache.maven.scm.provider.ScmProvider;

 import org.apache.maven.scm.repository.ScmRepository;

 import org.codehaus.plexus.util.StringUtils;

 import java.io.IOException;

 import java.text.ParseException;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 /**

  * Dump changelog contents to console. It is mainly used to test maven-scm-api's changelog command.

  *

  * @author <a href="dantran@gmail.com">Dan Tran</a>

  * @author Olivier Lamy

  * @version $Id: ChangeLogMojo.java 1328509 2012-04-20 21:13:09Z olamy $

  * @goal changelog

  * @aggregator

  */

 public class ChangeLogMojo

     extends AbstractScmMojo

 {

     private static final String DEFAULT_DATE_FORMAT = "yyyy-MM-dd";

     /**

      * Start Date.

      *

      * @parameter expression="${startDate}"

      */

     private String startDate;

     /**

      * End Date.

      *

      * @parameter expression="${endDate}"

      */

     private String endDate;

     /**

      * Start Scm Version.

      *

      * @parameter expression="${startScmVersion}"

      */

     private String startScmVersion;

     /**

      * End Scm Version.

      *

      * @parameter expression="${endScmVersion}"

      */

     private String endScmVersion;

     /**

      * Start Scm Version Type.

      *

      * @parameter expression="${startScmVersionType}"

      */

     private String startScmVersionType;

     /**

      * End Scm Version Type.

      *

      * @parameter expression="${endScmVersionType}"

      */

     private String endScmVersionType;

     /**

      * Date Format in changelog output of scm tool.

      *

      * @parameter expression="${dateFormat}"

      */

     private String dateFormat;

     /**

      * Date format to use for the specified startDate and/or endDate.

      *

      * @parameter expression="${userDateFormat}" default-value="yyyy-MM-dd"

      */

     private String userDateFormat = DEFAULT_DATE_FORMAT;

     /**

      * The version type (branch/tag) of scmVersion.

      *

      * @parameter expression="${scmVersionType}"

      */

     private String scmVersionType;

     /**

      * The version (revision number/branch name/tag name).

      *

      * @parameter expression="${scmVersion}"

      */

     private String scmVersion;

     /**

      * {@inheritDoc}

      */

     public void execute()

         throws MojoExecutionException

     {

         super.execute();

         SimpleDateFormat localFormat = new SimpleDateFormat( userDateFormat );

         try

         {

             ScmRepository repository = getScmRepository();

             ScmProvider provider = getScmManager().getProviderByRepository( repository );

             ScmVersion startRev =

                 getScmVersion( StringUtils.isEmpty( startScmVersionType ) ? "revision" : startScmVersionType,

                                startScmVersion );

             ScmVersion endRev =

                 getScmVersion( StringUtils.isEmpty( endScmVersionType ) ? "revision" : endScmVersionType,

                                endScmVersion );

             ChangeLogScmResult result;

             if ( startRev != null || endRev != null )

             {

                 result = provider.changeLog( repository, getFileSet(), startRev, endRev, dateFormat );

             }

             else

             {

                 result = provider.changeLog( repository, getFileSet(), this.parseDate( localFormat, this.startDate ),

                                              this.parseDate( localFormat, this.endDate ), 0,

                                              (ScmBranch) getScmVersion( scmVersionType, scmVersion ), dateFormat );

             }

             checkResult( result );

             ChangeLogSet changeLogSet = result.getChangeLog();

             for ( ChangeSet changeSet : changeLogSet.getChangeSets() )

             {

                 getLog().info( changeSet.toString() );

             }

         }

         catch ( IOException e )

         {

             throw new MojoExecutionException( "Cannot run changelog command : ", e );

         }

         catch ( ScmException e )

         {

             throw new MojoExecutionException( "Cannot run changelog command : ", e );

         }

     }

     /**

      * Converts the localized date string pattern to date object.

      *

      * @return A date

      */

     private Date parseDate( SimpleDateFormat format, String date )

         throws MojoExecutionException

     {

         if ( date == null || date.trim().length() == 0 )

         {

             return null;

         }

         try

         {

             return format.parse( date.toString() );

         }

         catch ( ParseException e )

         {

             throw new MojoExecutionException( "Please use this date pattern: " + format.toLocalizedPattern().toString(),

                                               e );

         }

     }

 }