/*
    * 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.
   */
  package org.apache.maven.plugins.site.descriptor;
  
  import java.io.File;
  import java.util.List;
  import java.util.Locale;
  
  import org.apache.maven.doxia.site.decoration.DecorationModel;
  import org.apache.maven.doxia.site.decoration.inheritance.DecorationModelInheritanceAssembler;
  import org.apache.maven.doxia.tools.SiteToolException;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.plugins.site.AbstractSiteMojo;
  import org.apache.maven.project.MavenProject;
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.repository.RemoteRepository;
  
  /**
   * Abstract class to compute effective site decoration model for site descriptors.
   *
   * @since 3.5
   */
  public abstract class AbstractSiteDescriptorMojo extends AbstractSiteMojo {
      /**
       * The component for assembling site decoration model inheritance.
       */
      @Component
      private DecorationModelInheritanceAssembler assembler;
  
      /**
       * The reactor projects.
       */
      @Parameter(defaultValue = "${reactorProjects}", required = true, readonly = true)
      protected List<MavenProject> reactorProjects;
  
      @Parameter(defaultValue = "${repositorySystemSession}", required = true, readonly = true)
      protected RepositorySystemSession repoSession;
  
      /**
       * Remote project 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(defaultValue = "${project.remoteProjectRepositories}", readonly = true)
      protected List<RemoteRepository> remoteProjectRepositories;
  
      /**
       * Directory containing the <code>site.xml</code> file and the source for hand written docs (one directory
       * per Doxia-source-supported markup types):
       * see <a href="/doxia/references/index.html">Doxia Markup Languages References</a>).
       *
       * @since 2.3
       */
      @Parameter(defaultValue = "${basedir}/src/site")
      protected File siteDirectory;
  
      /**
       * 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.
       * <p/>
       * Links will not be changed if this is set to false, or if the project has no URL defined.
       *
       * @since 2.3
       */
      @Parameter(property = "relativizeDecorationLinks", defaultValue = "true")
      private boolean relativizeDecorationLinks;
  
      protected DecorationModel prepareDecorationModel(Locale locale) throws MojoExecutionException {
          DecorationModel decorationModel;
          try {
              decorationModel = siteTool.getDecorationModel(
                      siteDirectory, locale, project, reactorProjects, repoSession, remoteProjectRepositories);
          } 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 {
                 List<Locale> localesList = getLocales();
 
                 // Default is first in the list
                 Locale defaultLocale = localesList.get(0);
 
                 // MSITE-658
                 final String localeUrl = locale.equals(defaultLocale) ? url : append(url, locale.toString());
 
                 getLog().info("Relativizing decoration links with respect to localized project URL: " + localeUrl);
                 assembler.resolvePaths(decorationModel, localeUrl);
             }
         }
         return decorationModel;
     }
 
     private String append(String url, String path) {
         return url.endsWith("/") ? (url + path) : (url + '/' + path);
     }
 }