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.io.File;

 import java.io.IOException;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.HashMap;

 import java.util.Iterator;

 import java.util.LinkedHashMap;

 import java.util.List;

 import java.util.Locale;

 import java.util.Map;

 import org.apache.maven.artifact.Artifact;

 import org.apache.maven.artifact.repository.ArtifactRepository;

 import org.apache.maven.doxia.sink.render.RenderingContext;

 import org.apache.maven.doxia.site.decoration.DecorationModel;

 import org.apache.maven.doxia.site.decoration.Menu;

 import org.apache.maven.doxia.site.decoration.MenuItem;

 import org.apache.maven.doxia.site.decoration.inheritance.DecorationModelInheritanceAssembler;

 import org.apache.maven.doxia.siterenderer.DocumentRenderer;

 import org.apache.maven.doxia.siterenderer.Renderer;

 import org.apache.maven.doxia.siterenderer.RendererException;

 import org.apache.maven.doxia.siterenderer.SiteRenderingContext;

 import org.apache.maven.doxia.tools.SiteToolException;

 import org.apache.maven.execution.MavenSession;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugin.MojoFailureException;

 import org.apache.maven.reporting.MavenReport;

 import org.apache.maven.reporting.exec.MavenReportExecution;

 import org.apache.maven.reporting.exec.MavenReportExecutor;

 import org.apache.maven.reporting.exec.MavenReportExecutorRequest;

 import org.apache.maven.reporting.exec.ReportPlugin;

 import org.codehaus.plexus.PlexusConstants;

 import org.codehaus.plexus.PlexusContainer;

 import org.codehaus.plexus.component.repository.exception.ComponentLookupException;

 import org.codehaus.plexus.context.Context;

 import org.codehaus.plexus.context.ContextException;

 import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable;

 /**

  * Base class for site rendering mojos.

  *

  * @author <a href="mailto:brett@apache.org">Brett Porter</a>

  * @version $Id$

  */

 public abstract class AbstractSiteRenderingMojo

     extends AbstractSiteMojo implements Contextualizable

 {

     /**

      * Module type exclusion mappings

      * ex: <code>fml  -> **&#47;*-m1.fml</code>  (excludes fml files ending in '-m1.fml' recursively)

      * <p/>

      * The configuration looks like this:

      * <pre>

      *   <moduleExcludes>

      *     <moduleType>filename1.ext,**/*sample.ext</moduleType>

      *     <!-- moduleType can be one of 'apt', 'fml' or 'xdoc'. -->

      *     <!-- The value is a comma separated list of           -->

      *     <!-- filenames or fileset patterns.                   -->

      *     <!-- Here's an example:                               -->

      *     <xdoc>changes.xml,navigation.xml</xdoc>

      *   </moduleExcludes>

      * </pre>

      *

      * @parameter

      */

     private Map<String, String> moduleExcludes;

     /**

      * The component for assembling inheritance.

      *

      * @component

      */

     private DecorationModelInheritanceAssembler assembler;

     /**

      * Remote repositories used for the project.

      *

      * @todo this is used for site descriptor resolution - it should relate to the actual project but for some reason they are not always filled in

      * @parameter default-value="${project.remoteArtifactRepositories}"

      * @readonly

      */

     private List<ArtifactRepository> repositories;

     /**

      * Directory containing the template page.

      *

      * @parameter expression="${templateDirectory}" default-value="src/site"

      * @deprecated use templateFile or skinning instead

      */

     private File templateDirectory;

     /**

      * Default template page.

      *

      * @parameter expression="${template}"

      * @deprecated use templateFile or skinning instead

      */

     private String template;

     /**

      * The location of a Velocity template file to use. When used, skins and the default templates, CSS and images

      * are disabled. It is highly recommended that you package this as a skin instead.

      *

      * @parameter expression="${templateFile}"

      * @since 2.0-beta-5

      */

     private File templateFile;

     /**

      * Additional template properties for rendering the site. See

      * <a href="/doxia/doxia-sitetools/doxia-site-renderer/">Doxia Site Renderer</a>.

      *

      * @parameter

      */

     private Map<String, Object> attributes;

     /**

      * Site renderer.

      *

      * @component

      */

     protected Renderer siteRenderer;

     /**

      * Reports (Maven 2).

      * 

      * @parameter expression="${reports}"

      * @required

      * @readonly

      */

     protected List<MavenReport> reports;

     /**

      * Alternative directory for xdoc source, useful for m1 to m2 migration

      *

      * @parameter default-value="${basedir}/xdocs"

      * @deprecated use the standard m2 directory layout

      */

     private File xdocDirectory;

     /**

      * Directory containing generated documentation.

      * This is used to pick up other source docs that might have been generated at build time.

      *

      * @parameter alias="workingDirectory" default-value="${project.build.directory}/generated-site"

      *

      * @todo should we deprecate in favour of reports?

      */

     protected File generatedSiteDirectory;

     /**

      * The current Maven session.

      * 

      * @parameter expression="${session}"

      * @required

      * @readonly

      */

     protected MavenSession mavenSession;

     /**

      * <p>Configuration section used internally by Maven 3.</p>

      * <p>More details available here:

      * <a href="http://maven.apache.org/plugins/maven-site-plugin/maven-3.html#Configuration_formats" target="_blank">

      *     http://maven.apache.org/plugins/maven-site-plugin/maven-3.html#Configuration_formats</a>

      * </p>

      * <p><b>Note:</b> using this field is not mandatory with Maven 3 as Maven core injects usual

      * <code>&lt;reporting&gt;</code> section into this field.</p>

      *

      * @parameter

      * @since 3.0-beta-1

      */

     private ReportPlugin[] reportPlugins;

     private PlexusContainer container;

     /**

      * Make links in the site descriptor relative to the project URL.

      * By default, any absolute links that appear in the site descriptor,

      * e.g. banner hrefs, breadcrumbs, menu links, etc., will be made relative to project.url.

      *

      * Links will not be changed if this is set to false, or if the project has no URL defined.

      *

      * @parameter expression="${relativizeDecorationLinks}" default-value="true"

      *

      * @since 2.3

      */

     private boolean relativizeDecorationLinks;

     /**

      * Whether to generate the summary page for project reports: project-info.html.

      *

      * @parameter expression="${generateProjectInfo}" default-value="true"

      *

      * @since 2.3

      */

     private boolean generateProjectInfo;

     /** {@inheritDoc} */

     public void contextualize( Context context )

         throws ContextException

     {

         container = (PlexusContainer) context.get( PlexusConstants.PLEXUS_KEY );

     }

     protected List<MavenReportExecution> getReports()

         throws MojoExecutionException

     {

         if ( isMaven3OrMore() )

         {

             MavenReportExecutorRequest mavenReportExecutorRequest = new MavenReportExecutorRequest();

             mavenReportExecutorRequest.setLocalRepository( localRepository );

             mavenReportExecutorRequest.setMavenSession( mavenSession );

             mavenReportExecutorRequest.setProject( project );

             mavenReportExecutorRequest.setReportPlugins( reportPlugins );

             MavenReportExecutor mavenReportExecutor;

             try

             {

                 mavenReportExecutor = (MavenReportExecutor) container.lookup( MavenReportExecutor.class.getName() );

             }

             catch ( ComponentLookupException e )

             {

                 throw new MojoExecutionException( "could not get MavenReportExecutor component", e );

             }

             return mavenReportExecutor.buildMavenReports( mavenReportExecutorRequest );

         }

         List<MavenReportExecution> reportExecutions = new ArrayList<MavenReportExecution>( reports.size() );

         for ( MavenReport report : reports )

         {

             if ( report.canGenerateReport() )

             {

                 reportExecutions.add( new MavenReportExecution( report ) );

             }

         }

         return reportExecutions;

     }

     protected SiteRenderingContext createSiteRenderingContext( Locale locale )

         throws MojoExecutionException, IOException, MojoFailureException

     {

         if ( attributes == null )

         {

             attributes = new HashMap<String, Object>();

         }

         if ( attributes.get( "project" ) == null )

         {

             attributes.put( "project", project );

         }

         if ( attributes.get( "inputEncoding" ) == null )

         {

             attributes.put( "inputEncoding", getInputEncoding() );

         }

         if ( attributes.get( "outputEncoding" ) == null )

         {

             attributes.put( "outputEncoding", getOutputEncoding() );

         }

         // Put any of the properties in directly into the Velocity context

         for ( Map.Entry<Object, Object> entry : project.getProperties().entrySet() )

         {

             attributes.put( (String) entry.getKey(), entry.getValue() );

         }

         DecorationModel decorationModel;

         try

         {

             decorationModel = siteTool.getDecorationModel( project, reactorProjects, localRepository, repositories,

                                                            siteTool.getRelativePath( siteDirectory.getAbsolutePath(),

                                                            project.getBasedir().getAbsolutePath() ),

                                                            locale, getInputEncoding(), getOutputEncoding() );

         }

         catch ( SiteToolException e )

         {

             throw new MojoExecutionException( "SiteToolException: " + e.getMessage(), e );

         }

         if ( relativizeDecorationLinks )

         {

             final String url = project.getUrl();

             if ( url == null )

             {

                 getLog().warn( "No project URL defined - decoration links will not be relativized!" );

             }

             else

             {

                 getLog().info( "Relativizing decoration links with respect to project URL: " + url );

                 assembler.resolvePaths( decorationModel, url );

             }

         }

         if ( template != null )

         {

             if ( templateFile != null )

             {

                 getLog().warn( "'template' configuration is ignored when 'templateFile' is set" );

             }

             else

             {

                 templateFile = new File( templateDirectory, template );

             }

         }

         File skinFile;

         try

         {

             Artifact skinArtifact =

                 siteTool.getSkinArtifactFromRepository( localRepository, repositories, decorationModel );

             getLog().info( "Rendering site with " + skinArtifact.getId() + " skin." );

             skinFile = skinArtifact.getFile();

         }

         catch ( SiteToolException e )

         {

             throw new MojoExecutionException( "SiteToolException: " + e.getMessage(), e );

         }

         SiteRenderingContext context;

         if ( templateFile != null )

         {

             if ( !templateFile.exists() )

             {

                 throw new MojoFailureException( "Template file '" + templateFile + "' does not exist" );

             }

             context = siteRenderer.createContextForTemplate( templateFile, skinFile, attributes, decorationModel,

                                                              project.getName(), locale );

         }

         else

         {

             context = siteRenderer.createContextForSkin( skinFile, attributes, decorationModel, project.getName(),

                                                          locale );

         }

         // Generate static site

         if ( !locale.getLanguage().equals( Locale.getDefault().getLanguage() ) )

         {

             context.addSiteDirectory( new File( siteDirectory, locale.getLanguage() ) );

             context.addModuleDirectory( new File( xdocDirectory, locale.getLanguage() ), "xdoc" );

             context.addModuleDirectory( new File( xdocDirectory, locale.getLanguage() ), "fml" );

         }

         else

         {

             context.addSiteDirectory( siteDirectory );

             context.addModuleDirectory( xdocDirectory, "xdoc" );

             context.addModuleDirectory( xdocDirectory, "fml" );

         }

         if ( moduleExcludes != null )

         {

             context.setModuleExcludes( moduleExcludes );

         }

         return context;

     }

     /**

      * Go through the list of reports and process each one like this:

      * <ul>

      * <li>Add the report to a map of reports keyed by filename having the report itself as value

      * <li>If the report is not yet in the map of documents, add it together with a suitable renderer

      * </ul>

      *

      * @param reports A List of MavenReports

      * @param documents A Map of documents, keyed by filename

      * @param locale the Locale the reports are processed for.

      * @return A map with all reports keyed by filename having the report itself as value.

      * The map will be used to populate a menu.

      */

     protected Map<String, MavenReport> locateReports( List<MavenReportExecution> reports,

                                                       Map<String, DocumentRenderer> documents, Locale locale )

     {

         // copy Collection to prevent ConcurrentModificationException

         List<MavenReportExecution> filtered = new ArrayList<MavenReportExecution>( reports );

         Map<String, MavenReport> reportsByOutputName = new LinkedHashMap<String, MavenReport>();

         for ( MavenReportExecution mavenReportExecution : filtered )

         {

             MavenReport report = mavenReportExecution.getMavenReport();

             String outputName = report.getOutputName() + ".html";

             // Always add the report to the menu, see MSITE-150

             reportsByOutputName.put( report.getOutputName(), report );

             if ( documents.containsKey( outputName ) )

             {

                 String displayLanguage = locale.getDisplayLanguage( Locale.ENGLISH );

                 getLog().info( "Skipped \"" + report.getName( locale ) + "\" report, file \"" + outputName

                                    + "\" already exists for the " + displayLanguage + " version." );

                 reports.remove( mavenReportExecution );

             }

             else

             {

                 RenderingContext renderingContext = new RenderingContext( siteDirectory, outputName );

                 DocumentRenderer renderer = new ReportDocumentRenderer( mavenReportExecution, renderingContext, getLog() );

                 documents.put( outputName, renderer );

             }

         }

         return reportsByOutputName;

     }

     /**

      * Go through the collection of reports and put each report into a list for the appropriate category. The list is

      * put into a map keyed by the name of the category.

      *

      * @param reports A Collection of MavenReports

      * @return A map keyed category having the report itself as value

      */

     protected Map<String, List<MavenReport>> categoriseReports( Collection<MavenReport> reports )

     {

         Map<String, List<MavenReport>> categories = new LinkedHashMap<String, List<MavenReport>>();

         for ( MavenReport report : reports )

         {

             List<MavenReport> categoryReports = categories.get( report.getCategoryName() );

             if ( categoryReports == null )

             {

                 categoryReports = new ArrayList<MavenReport>();

                 categories.put( report.getCategoryName(), categoryReports );

             }

             categoryReports.add( report );

         }

         return categories;

     }

     protected Map<String, DocumentRenderer> locateDocuments( SiteRenderingContext context, List<MavenReportExecution> reports,

                                                              Locale locale )

         throws IOException, RendererException

     {

         Map<String, DocumentRenderer> documents = siteRenderer.locateDocumentFiles( context );

         Map<String, MavenReport> reportsByOutputName = locateReports( reports, documents, locale );

         // TODO: I want to get rid of categories eventually. There's no way to add your own in a fully i18n manner

         Map<String, List<MavenReport>> categories = categoriseReports( reportsByOutputName.values() );

         siteTool.populateReportsMenu( context.getDecoration(), locale, categories );

         populateReportItems( context.getDecoration(), locale, reportsByOutputName );

         if ( categories.containsKey( MavenReport.CATEGORY_PROJECT_INFORMATION ) && generateProjectInfo )

         {

             List<MavenReport> categoryReports = categories.get( MavenReport.CATEGORY_PROJECT_INFORMATION );

             RenderingContext renderingContext = new RenderingContext( siteDirectory, "project-info.html" );

             String title = i18n.getString( "site-plugin", locale, "report.information.title" );

             String desc1 = i18n.getString( "site-plugin", locale, "report.information.description1" );

             String desc2 = i18n.getString( "site-plugin", locale, "report.information.description2" );

             DocumentRenderer renderer = new CategorySummaryDocumentRenderer( renderingContext, title, desc1, desc2,

                                                                              i18n, categoryReports, getLog() );

             if ( !documents.containsKey( renderer.getOutputName() ) )

             {

                 documents.put( renderer.getOutputName(), renderer );

             }

             else

             {

                 getLog().info( "Category summary '" + renderer.getOutputName() + "' skipped; already exists" );

             }

         }

         if ( categories.containsKey( MavenReport.CATEGORY_PROJECT_REPORTS ) )

         {

             List<MavenReport> categoryReports = categories.get( MavenReport.CATEGORY_PROJECT_REPORTS );

             RenderingContext renderingContext = new RenderingContext( siteDirectory, "project-reports.html" );

             String title = i18n.getString( "site-plugin", locale, "report.project.title" );

             String desc1 = i18n.getString( "site-plugin", locale, "report.project.description1" );

             String desc2 = i18n.getString( "site-plugin", locale, "report.project.description2" );

             DocumentRenderer renderer = new CategorySummaryDocumentRenderer( renderingContext, title, desc1, desc2,

                                                                              i18n, categoryReports, getLog() );

             if ( !documents.containsKey( renderer.getOutputName() ) )

             {

                 documents.put( renderer.getOutputName(), renderer );

             }

             else

             {

                 getLog().info( "Category summary '" + renderer.getOutputName() + "' skipped; already exists" );

             }

         }

         return documents;

     }

     protected void populateReportItems( DecorationModel decorationModel, Locale locale,

                                         Map<String, MavenReport> reportsByOutputName )

     {

         for ( Menu menu : decorationModel.getMenus() )

         {

             populateItemRefs( menu.getItems(), locale, reportsByOutputName );

         }

     }

     private void populateItemRefs( List<MenuItem> items, Locale locale, Map<String, MavenReport> reportsByOutputName )

     {

         for ( Iterator<MenuItem> i = items.iterator(); i.hasNext(); )

         {

             MenuItem item = i.next();

             if ( item.getRef() != null )

             {

                 MavenReport report = reportsByOutputName.get( item.getRef() );

                 if ( report != null )

                 {

                     if ( item.getName() == null )

                     {

                         item.setName( report.getName( locale ) );

                     }

                     if ( item.getHref() == null || item.getHref().length() == 0 )

                     {

                         item.setHref( report.getOutputName() + ".html" );

                     }

                 }

                 else

                 {

                     getLog().warn( "Unrecognised reference: '" + item.getRef() + "'" );

                     i.remove();

                 }

             }

             populateItemRefs( item.getItems(), locale, reportsByOutputName );

         }

     }

 }