/*
    * 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.index;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.net.HttpURLConnection;
  import java.net.URI;
  import java.net.http.HttpClient;
  import java.net.http.HttpRequest;
  import java.net.http.HttpResponse;
  
  import org.apache.maven.index.updater.ResourceFetcher;
  
  /**
   * {@link ResourceFetcher} backed by Java11 HttpClient to be used in tests.
   */
  public class Java11HttpClient implements ResourceFetcher {
      private final HttpClient client =
              HttpClient.newBuilder().followRedirects(HttpClient.Redirect.NEVER).build();
  
      private URI uri;
  
      @Override
      public void connect(String id, String url) {
          this.uri = URI.create(url + "/");
      }
  
      @Override
      public void disconnect() {}
  
      @Override
      public InputStream retrieve(String name) throws IOException {
          HttpRequest request =
                  HttpRequest.newBuilder().uri(uri.resolve(name)).GET().build();
          try {
              HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
              if (response.statusCode() == HttpURLConnection.HTTP_OK) {
                  return response.body();
              } else {
                  throw new IOException("Unexpected response: " + response);
              }
          } catch (InterruptedException e) {
              Thread.currentThread().interrupt();
              throw new IOException(e);
          }
      }
  }