/*
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    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.hc.client5.http.impl.classic;
  
  import java.io.IOException;
  
  import org.apache.hc.client5.http.classic.ExecChain;
  import org.apache.hc.client5.http.classic.ExecChainHandler;
  import org.apache.hc.client5.http.classic.ExecChain.Scope;
  import org.apache.hc.client5.http.classic.methods.HttpPost;
  import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
  import org.apache.hc.client5.http.io.HttpClientConnectionManager;
  import org.apache.hc.core5.http.ClassicHttpRequest;
  import org.apache.hc.core5.http.ClassicHttpResponse;
  import org.apache.hc.core5.http.Header;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.impl.bootstrap.HttpServer;
  import org.apache.hc.core5.http.impl.bootstrap.ServerBootstrap;
  import org.apache.hc.core5.http.io.HttpRequestHandler;
  import org.apache.hc.core5.http.protocol.HttpContext;
  import org.apache.hc.core5.io.CloseMode;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  
  @SuppressWarnings("boxing") // test code
  public class TestHttpClientBuilderInterceptors {
  
      private HttpServer localServer;
      private String uri;
      private CloseableHttpClient httpClient;
  
      @Before
      public void before() throws Exception {
          this.localServer = ServerBootstrap.bootstrap()
                  .register("/test", new HttpRequestHandler() {
  
              @Override
              public void handle(
                      final ClassicHttpRequest request,
                      final ClassicHttpResponse response,
                      final HttpContext context) throws HttpException, IOException {
                  final Header testInterceptorHeader = request.getHeader("X-Test-Interceptor");
                  if (testInterceptorHeader != null) {
                      response.setHeader(testInterceptorHeader);
                  }
                  response.setCode(200);
              }
          }).create();
  
          this.localServer.start();
          uri = "http://localhost:" + this.localServer.getLocalPort() + "/test";
          final HttpClientConnectionManager cm = PoolingHttpClientConnectionManagerBuilder.create()
                  .setMaxConnPerRoute(5)
                  .build();
          httpClient = HttpClientBuilder.create()
                  .setConnectionManager(cm)
                  .addExecInterceptorLast("test-interceptor", new ExecChainHandler() {
  
                      @Override
                      public ClassicHttpResponse execute(
                              final ClassicHttpRequest request,
                              final Scope scope,
                              final ExecChain chain) throws IOException, HttpException {
                          request.setHeader("X-Test-Interceptor", "active");
                          return chain.proceed(request, scope);
                      }
                  })
                  .build();
      }
  
      @After
      public void after() throws Exception {
          this.httpClient.close(CloseMode.IMMEDIATE);
         this.localServer.stop();
     }
 
     @Test
     public void testAddExecInterceptorLastShouldBeExecuted() throws IOException, HttpException {
         final ClassicHttpRequest request = new HttpPost(uri);
         final ClassicHttpResponse response = httpClient.execute(request);
         Assert.assertEquals(200, response.getCode());
         final Header testFilterHeader = response.getHeader("X-Test-Interceptor");
         Assert.assertNotNull(testFilterHeader);
     }
 
 }