package org.apache.maven.plugin.dependency.resolvers;

 /* 

  * 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.HashSet;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Set;

 import org.apache.maven.artifact.Artifact;

 import org.apache.maven.artifact.resolver.ArtifactNotFoundException;

 import org.apache.maven.artifact.resolver.ArtifactResolutionException;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugin.dependency.AbstractResolveMojo;

 import org.apache.maven.plugin.dependency.utils.DependencyUtil;

 import org.apache.maven.project.ProjectBuildingException;

 import org.apache.maven.project.artifact.InvalidDependencyVersionException;

 import org.apache.maven.shared.artifact.filter.collection.ArtifactsFilter;

 /**

  * Goal that resolves all project plugins and reports and their dependencies.

  * 

  * @goal resolve-plugins

  * @phase generate-sources

  * @author <a href="mailto:brianf@apache.org">Brian Fox</a>

  * @version $Id: ResolvePluginsMojo.java 728546 2008-12-21 22:56:51Z bentmann $

  * @since 2.0

  */

 public class ResolvePluginsMojo

     extends AbstractResolveMojo

 {

     /**

      * Remote repositories which will be searched for plugins.

      * 

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

      * @required

      * @readonly

      */

     private List remotePluginRepositories;

     /**

      * If we should exclude transitive dependencies

      * 

      * @parameter expression="${excludeTransitive}" default-value="false"

      */

     private boolean excludeTransitive;

     /**

      * Main entry into mojo. Gets the list of dependencies and iterates through

      * displaying the resolved version.

      * 

      * @throws MojoExecutionException

      *             with a message if an error occurs.

      * 

      */

     public void execute()

         throws MojoExecutionException

     {

         try

         {

             Set plugins = resolvePluginArtifacts();

             for ( Iterator i = plugins.iterator(); i.hasNext(); )

             {

                 Artifact plugin = (Artifact) i.next();

                 if ( !silent )

                 {

                     this.getLog().info( "Plugin Resolved: " + DependencyUtil.getFormattedFileName( plugin, false ) );

                 }

                 if ( !excludeTransitive )

                 {

                     Set transitiveDependencies = this.resolveArtifactDependencies( plugin );

                     if ( !silent )

                     {

                         for ( Iterator transIter = transitiveDependencies.iterator(); transIter.hasNext(); )

                         {

                             this.getLog().info(

                                                 "    Plugin Dependency Resolved: "

                                                     + DependencyUtil.getFormattedFileName( (Artifact) transIter.next(),

                                                                                            false ) );

                         }

                     }

                 }

             }

         }

         catch ( ArtifactResolutionException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         catch ( ArtifactNotFoundException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         catch ( ProjectBuildingException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         catch ( InvalidDependencyVersionException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

     }

     /**

      * This method resolves the plugin artifacts from the project.

      * 

      * @param project

      *            The POM.

      * @param artifactFactory

      *            component to build artifact objects.

      * @param localRepository

      *            where to resolve artifacts.

      * @param remotePluginRepositories

      *            list of remote repositories used to resolve plugins.

      * @param artifactResolver

      *            component used to resolve artifacts.

      * 

      * @return set of resolved plugin artifacts.

      * 

      * @throws ArtifactResolutionException

      * @throws ArtifactNotFoundException

      */

     protected Set resolvePluginArtifacts()

         throws ArtifactResolutionException, ArtifactNotFoundException

     {

         Set plugins = project.getPluginArtifacts();

         Set reports = project.getReportArtifacts();

         Set artifacts = new HashSet();

         artifacts.addAll( reports );

         artifacts.addAll( plugins );

         for ( Iterator i = artifacts.iterator(); i.hasNext(); )

         {

             Artifact artifact = (Artifact) i.next();

             // resolve the new artifact

             this.resolver.resolve( artifact, this.remotePluginRepositories, this.local );

         }

         return artifacts;

     }

     protected ArtifactsFilter getMarkedArtifactFilter()

     {

         // TODO Auto-generated method stub

         return null;

     }

 }