/*
    * ====================================================================
    * 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.examples;
  
  
  import java.io.IOException;
  import java.nio.CharBuffer;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.Future;
  
  import org.apache.hc.client5.http.async.methods.AbstractCharResponseConsumer;
  import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
  import org.apache.hc.client5.http.async.methods.SimpleHttpRequests;
  import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
  import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
  import org.apache.hc.client5.http.impl.async.HttpAsyncClients;
  import org.apache.hc.core5.concurrent.FutureCallback;
  import org.apache.hc.core5.http.ContentType;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.HttpResponse;
  import org.apache.hc.core5.http.nio.AsyncRequestProducer;
  import org.apache.hc.core5.http.nio.support.AsyncRequestBuilder;
  
  public class AsyncQuickStart {
  
      public static void main (final String[] args) throws Exception {
          try (final CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault()) {
              // Start the client
              httpclient.start();
  
              // Execute request
              final SimpleHttpRequest request1 = SimpleHttpRequests.get("http://httpbin.org/get");
              final Future<SimpleHttpResponse> future = httpclient.execute(request1, null);
              // and wait until response is received
              final SimpleHttpResponse response1 = future.get();
              System.out.println(request1.getRequestUri() + "->" + response1.getCode());
  
              // One most likely would want to use a callback for operation result
              final CountDownLatch latch1 = new CountDownLatch(1);
              final SimpleHttpRequest request2 = SimpleHttpRequests.get("http://httpbin.org/get");
              httpclient.execute(request2, new FutureCallback<SimpleHttpResponse>() {
  
                  @Override
                  public void completed(final SimpleHttpResponse response2) {
                      latch1.countDown();
                      System.out.println(request2.getRequestUri() + "->" + response2.getCode());
                  }
  
                  @Override
                  public void failed(final Exception ex) {
                      latch1.countDown();
                      System.out.println(request2.getRequestUri() + "->" + ex);
                  }
  
                  @Override
                  public void cancelled() {
                      latch1.countDown();
                      System.out.println(request2.getRequestUri() + " cancelled");
                  }
  
              });
              latch1.await();
  
              // In real world one most likely would want also want to stream
              // request and response body content
              final CountDownLatch latch2 = new CountDownLatch(1);
              final AsyncRequestProducer producer3 = AsyncRequestBuilder.get("http://httpbin.org/get").build();
              final AbstractCharResponseConsumer<HttpResponse> consumer3 = new AbstractCharResponseConsumer<HttpResponse>() {
  
                  HttpResponse response;
  
                  @Override
                  protected void start(final HttpResponse response, final ContentType contentType) throws HttpException, IOException {
                      this.response = response;
                 }
 
                 @Override
                 protected int capacityIncrement() {
                     return Integer.MAX_VALUE;
                 }
 
                 @Override
                 protected void data(final CharBuffer data, final boolean endOfStream) throws IOException {
                     // Do something useful
                 }
 
                 @Override
                 protected HttpResponse buildResult() throws IOException {
                     return response;
                 }
 
                 @Override
                 public void releaseResources() {
                 }
 
             };
             httpclient.execute(producer3, consumer3, new FutureCallback<HttpResponse>() {
 
                 @Override
                 public void completed(final HttpResponse response3) {
                     latch2.countDown();
                     System.out.println(request2.getRequestUri() + "->" + response3.getCode());
                 }
 
                 @Override
                 public void failed(final Exception ex) {
                     latch2.countDown();
                     System.out.println(request2.getRequestUri() + "->" + ex);
                 }
 
                 @Override
                 public void cancelled() {
                     latch2.countDown();
                     System.out.println(request2.getRequestUri() + " cancelled");
                 }
 
             });
             latch2.await();
 
         }
     }
 
 }