package org.apache.maven.plugin.reactor;

 /*

  * 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.Arrays;

 import java.util.List;

 import org.apache.maven.plugin.AbstractMojo;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugin.MojoFailureException;

 import org.apache.maven.project.MavenProject;

 import org.apache.maven.project.ProjectSorter;

 import org.apache.maven.shared.invoker.Invoker;

 /**

  * Goal to resume building a reactor at a certain point 

  *

  * @author <a href="mailto:dfabulich@apache.org">Dan Fabulich</a>

  * @goal resume

  * @aggregator

  * @phase process-sources

  */

 public class ResumeMojo

     extends AbstractMojo

 {

     /**

      * @parameter expression="${project.collectedProjects}"

      */

     List collectedProjects;

     /**

      * Location of the file.

      * @parameter expression="${basedir}"

      */

     File baseDir;

     /**

      * @parameter expression="${make.group}" default-value="${project.groupId}"

      */

     String continueFromGroup;

     /**

      * The artifact from which we'll resume, e.g. "com.mycompany:foo" or just "foo"

      * @parameter expression="${fromArtifact}" default-value="null"

      * @required

      */

     String continueFromProject;

     /**

      * The project folder from which we'll resume

      * @parameter expression="${from}" default-value="null"

      * @required

      */

     File continueFromFolder;

     /**

      * Goals to run on subproject

      * @parameter expression="${make.goals}" default-value="install"

      */

     String goals;

     /**

      * @component

      */

     Invoker invoker;

     /**

      * Don't really do anything; just print a message that describes what the command would have done

      * @parameter expression="${make.printOnly}"

      */

     boolean printOnly = false;

     /**

      * @component

      */

     SimpleInvoker simpleInvoker;

     public void execute()

         throws MojoExecutionException, MojoFailureException

     {

             if ( "null".equals( continueFromProject ) )

             {

                 continueFromProject = null;

             }

             if ( new File( "null" ).equals( continueFromFolder ) )

             {

                 continueFromFolder = null;

             }

         if ( continueFromFolder == null && continueFromProject == null )

         {

             throw new MojoFailureException("You must specify either a folder or a project with -Dfrom=baz/bar or -DfromArtifact=com.mycompany:foo (groupId is optional)");

         }

         if (continueFromFolder != null && continueFromProject != null )

         {

             throw new MojoFailureException("You can't specify both a folder (" + continueFromFolder + ") and an artifact (" + continueFromProject + ")");

         }

         if ( continueFromFolder != null && !continueFromFolder.exists() )

         {

             throw new MojoFailureException("Folder doesn't exist: " + continueFromFolder.getAbsolutePath() );

         }

         String[] reactorIncludes;

         try

         {

             if (collectedProjects.size() == 0) {

                 throw new NonReactorException();

             }

             ProjectSorter ps = new ProjectSorter( collectedProjects );

             List sortedProjects = ps.getSortedProjects();

             String projectName = null;

             if ( continueFromProject != null)

             {

                 projectName = continueFromProject;

                 if ( projectName.indexOf(':') != -1 ) {

                     int index = continueFromProject.indexOf(':');

                     continueFromGroup = continueFromProject.substring( 0, index );

                     projectName = continueFromProject.substring( index+1 );

                 }

             }

             boolean found = false;

             int i = 0;

             for (; i < sortedProjects.size(); i++) {

                 MavenProject mp = (MavenProject) sortedProjects.get( i );

                 if ( continueFromFolder == null )

                 {

                     if ( continueFromGroup.equals( mp.getGroupId() ) && projectName.equals( mp.getArtifactId() ) )

                     {

                         found = true;

                         break;

                     }

                 } else {

                     if ( continueFromFolder.equals( mp.getFile().getParentFile() ) )

                     {

                         found = true;

                         break;

                     }

                 }

             }

             if (!found) throw new MissingProjectException(continueFromGroup + ":" + projectName);

             // construct array of relative POM paths

             reactorIncludes = new String[sortedProjects.size() - i];

             for ( int j = i; j < sortedProjects.size(); j++ )

             {

                 MavenProject mp = (MavenProject) sortedProjects.get( j );

                 String path = RelativePather.getRelativePath( baseDir, mp.getFile() );

                 reactorIncludes[j- i] = path;

             }

         }

         catch (MojoFailureException e) {

             throw e;

         }

         catch ( Exception e )

         {

             throw new MojoExecutionException( "Problem generating dependency tree", e );

         }

         simpleInvoker.runReactor( reactorIncludes, Arrays.asList( goals.split( "," ) ), invoker, printOnly, getLog() );

     }

 }