/*
 * Copyright 2010 Ning, Inc.
 *
 * This program is licensed 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.asynchttpclient;

import org.eclipse.jetty.server.handler.AbstractHandler;
import org.testng.annotations.Test;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.concurrent.*;

import static org.asynchttpclient.Dsl.asyncHttpClient;
import static org.asynchttpclient.Dsl.head;
import static org.testng.Assert.*;

/**
 * Tests HEAD request that gets 302 response.
 *
 * @author Hubert Iwaniuk
 */
public class Head302Test extends AbstractBasicTest {

  @Override
  public AbstractHandler configureHandler() throws Exception {
    return new Head302handler();
  }

  @Test
  public void testHEAD302() throws IOException, InterruptedException, ExecutionException, TimeoutException {
    AsyncHttpClientConfig clientConfig = new DefaultAsyncHttpClientConfig.Builder().setFollowRedirect(true).build();
    try (AsyncHttpClient client = asyncHttpClient(clientConfig)) {
      final CountDownLatch l = new CountDownLatch(1);
      Request request = head("http://localhost:" + port1 + "/Test").build();

      Response response = client.executeRequest(request, new AsyncCompletionHandlerBase() {
        @Override
        public Response onCompleted(Response response) throws Exception {
          l.countDown();
          return super.onCompleted(response);
        }
      }).get(3, TimeUnit.SECONDS);

      if (l.await(TIMEOUT, TimeUnit.SECONDS)) {
        assertEquals(response.getStatusCode(), HttpServletResponse.SC_OK);
        assertTrue(response.getUri().getPath().endsWith("_moved"));
      } else {
        fail("Timeout out");
      }
    }
  }

  /**
   * Handler that does Found (302) in response to HEAD method.
   */
  private static class Head302handler extends AbstractHandler {
    public void handle(String s, org.eclipse.jetty.server.Request r, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
      if ("HEAD".equalsIgnoreCase(request.getMethod())) {
        response.setStatus(HttpServletResponse.SC_FOUND); // 302
        response.setHeader("Location", request.getPathInfo() + "_moved");
      } else if ("GET".equalsIgnoreCase(request.getMethod())) {
        response.setStatus(HttpServletResponse.SC_OK);
      } else {
        response.setStatus(HttpServletResponse.SC_FORBIDDEN);
      }

      r.setHandled(true);
    }
  }
}