/*
    * 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.search.backend.remoterepository.extractor;
  
  import java.util.List;
  
  import org.apache.maven.search.api.Record;
  import org.apache.maven.search.backend.remoterepository.Context;
  import org.apache.maven.search.backend.remoterepository.RecordFactory;
  import org.jsoup.nodes.Document;
  import org.jsoup.nodes.Element;
  import org.jsoup.select.Elements;
  
  /**
   * Extractor for Sonatype Nexus2.
   */
  public class Nx2ResponseExtractor extends ResponseExtractorSupport {
      protected boolean accept(String name) {
          return !"Parent Directory".equals(name) && super.accept(name);
      }
  
      private String name(Element element) {
          String name = element.text();
          if (name.endsWith("/")) {
              name = name.substring(0, name.length() - 1);
          }
          return name;
      }
  
      @Override
      public int populateG(Context context, Document document, RecordFactory recordFactory, List<Record> page) {
          // Index HTML page like this one:
          // https://repo.maven.apache.org/maven2/org/apache/maven/indexer/
          Elements elements = document.getElementsByTag("a");
          for (Element element : elements) {
              String name = name(element);
              if (accept(name)) {
                  page.add(recordFactory.create(context.getGroupId(), name, null, null, null, null));
              }
          }
          return page.size();
      }
  
      @Override
      public int populateGAV(Context context, Document document, RecordFactory recordFactory, List<Record> page) {
          // Index HTML page like this one:
          // https://repo.maven.apache.org/maven2/org/apache/maven/indexer/search-api/7.0.3/
          Elements elements = document.getElementsByTag("a");
          for (Element element : elements) {
              // skip possible subdirectories and files without extensions
              String name = element.attr("href");
              if (name.endsWith("/") || !name.contains(".")) {
                  continue;
              }
              populateGAVName(context, name(element), recordFactory, page);
          }
          return page.size();
      }
  }