/*
    * ====================================================================
    * 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.util.concurrent.Future;
  
  import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
  import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
  import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
  import org.apache.hc.client5.http.async.methods.SimpleRequestProducer;
  import org.apache.hc.client5.http.async.methods.SimpleResponseConsumer;
  import org.apache.hc.client5.http.auth.AuthScope;
  import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
  import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
  import org.apache.hc.client5.http.impl.async.HttpAsyncClients;
  import org.apache.hc.client5.http.impl.auth.BasicCredentialsProvider;
  import org.apache.hc.client5.http.impl.auth.BasicScheme;
  import org.apache.hc.client5.http.protocol.HttpClientContext;
  import org.apache.hc.core5.concurrent.FutureCallback;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.message.StatusLine;
  import org.apache.hc.core5.io.CloseMode;
  
  /**
   * A simple example that uses HttpClient to execute an HTTP request against
   * a target site that requires user authentication.
   */
  public class AsyncPreemptiveBasicClientAuthentication {
  
      public static void main(final String[] args) throws Exception {
          final BasicCredentialsProvider credsProvider = new BasicCredentialsProvider();
          credsProvider.setCredentials(
                  new AuthScope("httpbin.org", 80),
                  new UsernamePasswordCredentials("user", "passwd".toCharArray()));
          final CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom()
                  .setDefaultCredentialsProvider(credsProvider)
                  .build();
          httpclient.start();
  
          // Generate Basic scheme object and add it to the local auth cache
          final BasicScheme basicAuth = new BasicScheme();
          basicAuth.initPreemptive(new UsernamePasswordCredentials("user", "passwd".toCharArray()));
  
          final HttpHost target = new HttpHost("http", "httpbin.org", 80);
  
          // Add AuthCache to the execution context
          final HttpClientContext localContext = HttpClientContext.create();
          localContext.resetAuthExchange(target, basicAuth);
  
          final SimpleHttpRequest request = SimpleRequestBuilder.get("http://httpbin.org:80/basic-auth/user/passwd")
                  .build();
  
          System.out.println("Executing request " + request);
          for (int i = 0; i < 3; i++) {
              final Future<SimpleHttpResponse> future = httpclient.execute(
                      SimpleRequestProducer.create(request),
                      SimpleResponseConsumer.create(),
                      localContext,
                      new FutureCallback<SimpleHttpResponse>() {
  
                          @Override
                          public void completed(final SimpleHttpResponse response) {
                              System.out.println(request + "->" + new StatusLine(response));
                              System.out.println(response.getBody());
                          }
  
                          @Override
                          public void failed(final Exception ex) {
                              System.out.println(request + "->" + ex);
                          }
  
                          @Override
                          public void cancelled() {
                              System.out.println(request + " cancelled");
                          }
 
                     });
             future.get();
         }
 
         System.out.println("Shutting down");
         httpclient.close(CloseMode.GRACEFUL);
     }
 }