/**
    * This Source Code Form is subject to the terms of the Mozilla Public
    * License, v. 2.0. If a copy of the MPL was not distributed with this
    * file, You can obtain one at http://mozilla.org/MPL/2.0/.
    *
    * If it is not possible or desirable to put the notice in a particular
    * file, then You may include the notice in a location (such as a LICENSE
    * file in a relevant directory) where a recipient would be likely to look
    * for such a notice.
  
   * 
   */
   
  /*  ---------------------------------------------------------------------------
   *  U.S. Government, Department of the Army
   *  Army Materiel Command
   *  Research Development Engineering Command
   *  Communications Electronics Research Development and Engineering Center
   *  ---------------------------------------------------------------------------
   */
  package org.miloss.fgsms.presentation;
  
  import java.net.URL;
  import org.apache.http.HttpHost;
  import org.apache.http.auth.AuthScope;
  import org.apache.http.auth.UsernamePasswordCredentials;
  import org.apache.http.client.CredentialsProvider;
  import org.apache.http.client.HttpClient;
  import org.apache.http.client.methods.CloseableHttpResponse;
  import org.apache.http.client.methods.HttpGet;
  import org.apache.http.impl.client.BasicCredentialsProvider;
  import org.apache.http.impl.client.CloseableHttpClient;
  import org.apache.http.impl.client.HttpClientBuilder;
  import org.apache.http.impl.client.HttpClients;
  import org.miloss.fgsms.common.Constants;
  import org.miloss.fgsms.common.Utility;
  import org.apache.log4j.Level;
  import org.miloss.fgsms.common.Logger;;
  
  /**
   * Provides the Operating Status blurb on the gui  see
   * fgsmsstatus.jsp
   *
   * @author AO
   */
  public class StatusHelper {
  
      public StatusHelper(String username, String password, org.miloss.fgsms.common.Constants.AuthMode mode, String keystore, String keystorepassword, String truststore, String truststorepassword) {
          try {
              this.username = username;
              this.password = password;
              this.mode = mode;
              
          } catch (Exception ex) {
              log.log(Level.WARN, "error initializing ssl sockets ", ex);
          }
      }
      private static final Logger log = LogHelper.getLog();
      
      private String username;
      private String password;
      private org.miloss.fgsms.common.Constants.AuthMode mode = org.miloss.fgsms.common.Constants.AuthMode.None;
  
      /**
       * determines if an fgsms service is currently accessible. not for use
       * with other services.
       *
       * @param endpoint
       * @return
       */
      public String sendGetRequest(String endpoint) {
          //   String result = null;
          if (endpoint.startsWith("http")) {
              // Send a GET request to the servlet
              try {
  
                  URL url = new URL(endpoint);
                  int port = url.getPort();
                  if (port <= 0) {
                      if (endpoint.startsWith("https:")) {
                          port = 443;
                      } else {
                          port = 80;
                      }
                  }
                  
                  HttpClientBuilder create = HttpClients.custom();
                  
                  if (mode == org.miloss.fgsms.common.Constants.AuthMode.UsernamePassword) {
                      CredentialsProvider credsProvider = new BasicCredentialsProvider();
                      credsProvider.setCredentials(
                              new AuthScope(url.getHost(), port),
                              new UsernamePasswordCredentials(username, Utility.DE(password)));
                      create.setDefaultCredentialsProvider(credsProvider);;
                            
                      
                  }
                  CloseableHttpClient c = create.build();
                  
                 CloseableHttpResponse response = c.execute(new HttpHost(url.getHost(), port), new HttpGet(endpoint));
                 
                 c.close();
                 int status=response.getStatusLine().getStatusCode();
                 if (status == 200) {
                     return "OK";
                 }
                 return String.valueOf(status);
 
             } catch (Exception ex) {
                 Logger.getLogger(Helper.class).log(Level.WARN, "error fetching http doc from " + endpoint + ex.getLocalizedMessage());
                 return "offline";
             }
         }  else {
             return "undeterminable";
         }
     }
 }