/*
    * ====================================================================
    * 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.testing.sync;
  
  import java.net.URI;
  import java.util.List;
  
  import org.apache.hc.client5.http.classic.methods.HttpGet;
  import org.apache.hc.client5.http.cookie.BasicCookieStore;
  import org.apache.hc.client5.http.cookie.Cookie;
  import org.apache.hc.client5.http.cookie.CookieStore;
  import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
  import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;
  import org.apache.hc.client5.http.protocol.HttpClientContext;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.HttpStatus;
  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.entity.EntityUtils;
  import org.apache.hc.core5.http.message.BasicHeader;
  import org.apache.hc.core5.io.CloseMode;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  /**
   * This class tests cookie matching when using Virtual Host.
   */
  public class TestCookieVirtualHost {
  
      private HttpServer server;
  
      @AfterEach
      public void shutDown() throws Exception {
          if (this.server != null) {
              this.server.close(CloseMode.GRACEFUL);
          }
      }
  
      @Test
      public void testCookieMatchingWithVirtualHosts() throws Exception {
          server = ServerBootstrap.bootstrap()
                  .register("app.mydomain.fr", "*", (request, response, context) -> {
  
                      final int n = Integer.parseInt(request.getFirstHeader("X-Request").getValue());
                      switch (n) {
                          case 1:
                              // Assert Host is forwarded from URI
                              Assertions.assertEquals("app.mydomain.fr", request
                                      .getFirstHeader("Host").getValue());
  
                              response.setCode(HttpStatus.SC_OK);
                              // Respond with Set-Cookie on virtual host domain. This
                              // should be valid.
                              response.addHeader(new BasicHeader("Set-Cookie",
                                      "name1=value1; domain=mydomain.fr; path=/"));
                              break;
  
                          case 2:
                              // Assert Host is still forwarded from URI
                              Assertions.assertEquals("app.mydomain.fr", request
                                      .getFirstHeader("Host").getValue());
  
                              // We should get our cookie back.
                              Assertions.assertNotNull(request.getFirstHeader("Cookie"), "We must get a cookie header");
                              response.setCode(HttpStatus.SC_OK);
                              break;
  
                          case 3:
                              // Assert Host is forwarded from URI
                              Assertions.assertEquals("app.mydomain.fr", request
                                      .getFirstHeader("Host").getValue());
  
                              response.setCode(HttpStatus.SC_OK);
                              break;
                         default:
                             Assertions.fail("Unexpected value: " + n);
                             break;
                     }
                 })
                 .create();
         server.start();
 
         final HttpHost target = new HttpHost("localhost", server.getLocalPort());
         try (final CloseableHttpClient client = HttpClientBuilder.create().build()) {
             final CookieStore cookieStore = new BasicCookieStore();
             final HttpClientContext context = HttpClientContext.create();
             context.setCookieStore(cookieStore);
 
             // First request : retrieve a domain cookie from remote server.
             final HttpGet request1 = new HttpGet(new URI("http://app.mydomain.fr"));
             request1.addHeader("X-Request", "1");
             client.execute(target, request1, context, response -> {
                 Assertions.assertEquals(200, response.getCode());
                 EntityUtils.consume(response.getEntity());
                 return null;
             });
 
             // We should have one cookie set on domain.
             final List<Cookie> cookies = cookieStore.getCookies();
             Assertions.assertNotNull(cookies);
             Assertions.assertEquals(1, cookies.size());
             Assertions.assertEquals("name1", cookies.get(0).getName());
 
             // Second request : send the cookie back.
             final HttpGet request2 = new HttpGet(new URI("http://app.mydomain.fr"));
             request2.addHeader("X-Request", "2");
             client.execute(target, request2, context, response -> {
                 Assertions.assertEquals(200, response.getCode());
                 EntityUtils.consume(response.getEntity());
                 return null;
             });
 
             // Third request : Host header
             final HttpGet request3 = new HttpGet(new URI("http://app.mydomain.fr"));
             request3.addHeader("X-Request", "3");
             client.execute(target, request3, context, response -> {
                 Assertions.assertEquals(200, response.getCode());
                 EntityUtils.consume(response.getEntity());
                 return null;
             });
         }
     }
 
 }