package org.apache.maven.plugins.site;

 /*

  * 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.Map;

 import org.apache.commons.lang.StringUtils;

 import org.apache.maven.model.Build;

 import org.apache.maven.model.Plugin;

 import org.apache.maven.model.PluginManagement;

 import org.apache.maven.model.Site;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.project.MavenProject;

 import org.codehaus.plexus.util.xml.Xpp3Dom;

 /**

  * Deploys the generated site to a staging or mock directory to the site URL

  * specified in the <code>&lt;distributionManagement&gt;</code> section of the

  * POM, using <a href="/wagon/">wagon supported protocols</a>

  *

  * @author <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton</a>

  * @version $Id: org.apache.maven.plugins.site.SiteStageDeployMojo.html 816573 2012-05-08 12:11:59Z hboutemy $

  * @goal stage-deploy

  * @requiresDependencyResolution test

  */

 public class SiteStageDeployMojo

     extends AbstractDeployMojo

 {

     /**

      * The staged site will be deployed to this URL.

      *

      * If you don't specify this, the default-value will be

      * "${project.distributionManagement.site.url}/staging", where "project" is

      * either the current project or, in a reactor build, the top level project

      * in the reactor.

      * <p>

      * Note that even if you specify this plugin parameter, you still need to indicate

      * ${project.distributionManagement.site.url} at least in your top level project

      * in order for relative links between modules to be resolved correctly.

      * </p>

      *

      * @parameter expression="${stagingSiteURL}"

      * @see <a href="http://maven.apache.org/maven-model/maven.html#class_site">MavenModel#class_site</a>

      */

     private String stagingSiteURL;

     /**

      * The identifier of the repository where the staging site will be deployed. This id will be used to lookup a

      * corresponding <code>&lt;server&gt;</code> entry from the <code>settings.xml</code>. If a matching

      * <code>&lt;server&gt;</code> entry is found, its configured credentials will be used for authentication.

      *

      * If this is not specified, then the corresponding value of <code>distributionManagement.site.id</code>

      * will be taken as default, unless this is not defined either then the String

      * <code>"stagingSite"</code> is used. (<strong>Note</strong>:

      * until v. 2.3 and 3.0-beta-3 the String <code>"stagingSite"</code> is always used.)

      *

      * @parameter expression="${stagingRepositoryId}"

      *

      * @since 2.0.1

      */

     private String stagingRepositoryId;

     @Override

     /**

      * Find the relative path between the distribution URLs of the parent that

      * supplied the staging deploy URL and the current project.

      *

      * @return the relative path or "./" if the two URLs are the same.

      *

      * @throws MojoExecutionException

      */

     protected String getDeployModuleDirectory()

         throws MojoExecutionException

     {

         // MSITE-602: If the user specified an explicit stagingSiteURL, use a special relative path

         if( StringUtils.isNotEmpty( stagingSiteURL ) )

         {

             // We need to calculate the relative path between this project and

             // the first one that supplied a stagingSiteURL

             String relative = siteTool.getRelativePath( getSite( project ).getUrl(),

                 getSiteForTopMostParentWithStagingSiteURL( project ).getUrl() );

             // SiteTool.getRelativePath() uses File.separatorChar,

             // so we need to convert '\' to '/' in order for the URL to be valid for Windows users

             relative = relative.replace( '\\', '/' );

             getLog().debug( "The stagingSiteURL is configured, using special way to calculate relative path." );

             return ( "".equals( relative ) ) ? "./" : relative;

         }

         else

         {

             getLog().debug( "No stagingSiteURL is configured, using standard way to calculate relative path." );

             return super.getDeployModuleDirectory();

         }

     }

     @Override

     protected String getDeployRepositoryID()

         throws MojoExecutionException

     {

         stagingRepositoryId = stagingRepoId( stagingRepositoryId );

         getLog().info( "Using this server ID for stage deploy: " + stagingRepositoryId );

         return stagingRepositoryId;

     }

     @Override

     protected String getDeployRepositoryURL()

         throws MojoExecutionException

     {

         String stagingURL = determineStagingSiteURL( stagingSiteURL );

         getLog().info( "Using this base URL for stage deploy: " + stagingURL );

         return stagingURL;

     }

     /**

      * Extract the distributionManagement.site of the top most project in the

      * hierarchy that specifies a stagingSiteURL, starting at the given

      * MavenProject.

      * <p/>

      * This climbs up the project hierarchy and returns the site of the top most

      * project for which

      * {@link #getStagingSiteURL(org.apache.maven.project.MavenProject)} returns

      * a URL.

      *

      * @param project the MavenProject. Not null.

      * @return the site for the top most project that has a stagingSiteURL. Not null.

      */

     private Site getSiteForTopMostParentWithStagingSiteURL( MavenProject project )

     {

         Site site = project.getDistributionManagement().getSite();

         MavenProject parent = project;

         // @todo Should we check that the stagingSiteURL equals the one in this project instead of being non-empty?

         while ( parent != null

                 && StringUtils.isNotEmpty( getStagingSiteURL( parent ) ) )

         {

             site = parent.getDistributionManagement().getSite();

             // MSITE-585, MNG-1943

             parent = siteTool.getParentProject( parent, reactorProjects, localRepository );

         }

         return site;

     }

     /**

      * Extract the value of the stagingSiteURL configuration parameter of

      * maven-site-plugin for the given project.

      *

      * @param project The MavenProject, not null

      * @return The stagingSiteURL for the project, or null if it doesn't have one

      */

     private String getStagingSiteURL( MavenProject project )

     {

         final String sitePluginKey = "org.apache.maven.plugins:maven-site-plugin";

         if ( project == null )

         {

             return null;

         }

         final Build build = project.getBuild();

         if ( build == null )

         {

             return null;

         }

         Map<String, Plugin> plugins = build.getPluginsAsMap();

         Plugin sitePlugin = plugins.get( sitePluginKey );

         if ( sitePlugin == null )

         {

             final PluginManagement buildPluginManagement = build.getPluginManagement();

             if ( buildPluginManagement == null )

             {

                 return null;

             }

             plugins = buildPluginManagement.getPluginsAsMap();

             sitePlugin = plugins.get( sitePluginKey );

         }

         if ( sitePlugin == null )

         {

             return null;

         }

         final Xpp3Dom sitePluginConfiguration = (Xpp3Dom) sitePlugin.getConfiguration();

         if ( sitePluginConfiguration == null )

         {

             return null;

         }

         final Xpp3Dom child = sitePluginConfiguration.getChild( "stagingSiteURL" );

         if ( child == null )

         {

             return null;

         }

         else

         {

             return child.getValue();

         }

     }

     /**

      * Find the URL where staging will take place.

      *

      * @param usersStagingSiteURL The staging site URL as suggested by the user's configuration

      * 

      * @return the site URL for staging

      */

     private String determineStagingSiteURL( final String usersStagingSiteURL )

         throws MojoExecutionException

     {

         String topLevelURL = null;

         if ( usersStagingSiteURL != null )

         {

             // the user has specified a stagingSiteURL - use it

             getLog().debug( "stagingSiteURL specified by the user: " + usersStagingSiteURL );

             topLevelURL = usersStagingSiteURL;

         }

         else

         {

             // The user didn't specify a URL, use the top level site distribution URL and add "[/]staging/" to it

             topLevelURL = appendSlash( getRootSite( project ).getUrl() )

                 + DEFAULT_STAGING_DIRECTORY;

             getLog().debug( "stagingSiteURL NOT specified, using the top level project: " + topLevelURL );

         }

         // Return either

         //   usersURL

         // or

         //   topLevelProjectURL + "staging"

         return topLevelURL;

     }

     private String stagingRepoId( final String stagingRepoId )

     {

         if ( stagingRepoId != null )

         {

             return stagingRepoId;

         }

         try

         {

             return getSite( project ).getId();

         }

         catch ( MojoExecutionException ex )

         {

             return "stagingSite";

         }

     }

 }