/*
   * Copyright 2012-2025 Christophe Friederich
   *
   * Licensed 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.devacfr.maven.skins.reflow.model;
  
  import static java.util.Objects.requireNonNull;
  
  import com.google.common.base.Strings;
  import com.google.common.collect.Lists;
  import java.util.List;
  import javax.annotation.Nonnull;
  import org.apache.maven.doxia.site.SiteModel;
  import org.codehaus.plexus.util.xml.Xpp3Dom;
  import org.devacfr.maven.skins.reflow.ISkinConfig;
  
  /**
   * Represents the footer component.
   *
   * @author devacfr
   * @since 2.0
   */
  public class Footer extends BsComponent {
  
    /** */
    private static final String COMPONENT = "footer";
  
    /** */
    private final List<Column> columns = Lists.newArrayList();
  
    /**
     * Default constructor.
     *
     * @param config
     *          a config (can not be {@code null}).
     */
    public Footer(@Nonnull final ISkinConfig config) {
      super(config, COMPONENT);
      requireNonNull(config);
      final SiteModel model = requireNonNull(config.getSiteModel());
      this.setTheme(config.getAttributeValue(COMPONENT, "theme", String.class, "light"));
      this.setBackground(config.getAttributeValue(COMPONENT, "background", String.class, "light"));
      this.setCssClass(config.getAttributeValue(COMPONENT, "cssClass", String.class, null));
  
      final Xpp3Dom bottomNav = config.get("bottomNav");
  
      if (model.getBody() != null && model.getBody().getMenus() != null) {
        final List<org.apache.maven.doxia.site.Menu> menus = model.getBody().getMenus();
        if (bottomNav != null && bottomNav.getChildren().length > 0) {
          // foreach columns
          for (final Xpp3Dom col : bottomNav.getChildren()) {
            final String regex = col.getValue();
            if (Strings.isNullOrEmpty(regex)) {
              continue;
            }
            final List<Menu> amenus = Lists.newArrayList();
            for (final org.apache.maven.doxia.site.Menu menu : menus) {
              // add in column, if matches with regex
              if (Menu.matches(regex, menu)) {
                amenus.add(new Menu(config, menu));
              }
            }
            this.columns.add(new Column(config, amenus));
          }
        } else {
          final List<Menu> amenus = Lists.newArrayList();
          for (final org.apache.maven.doxia.site.Menu menu : menus) {
            amenus.add(new Menu(config, menu));
          }
          this.columns.add(new Column(config, amenus));
        }
      }
    }
  
    /**
     * @return Returns a list of {@link Column}.
     */
    public List<Column> getColumns() {
      return columns;
    }
  
    /**
     * @author Christophe Friederich
     * @since 2.0
     */
    public static class Column {
  
      /** */
     private final List<Menu> menus;
 
     /**
      * @param config
      *          a config (can not be {@code null}).
      * @param menus
      *          list of menu.
      */
     public Column(@Nonnull final ISkinConfig config, @Nonnull final List<Menu> menus) {
       requireNonNull(config);
       requireNonNull(menus);
       this.menus = menus;
     }
 
     /**
      * @return Returns a list of {@link Menu}.
      */
     public List<Menu> getMenus() {
       return menus;
     }
   }
 }