package com.kristall;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import org.apache.commons.httpclient.Credentials;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NTCredentials;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScheme;
import org.apache.commons.httpclient.auth.CredentialsNotAvailableException;
import org.apache.commons.httpclient.auth.CredentialsProvider;
import org.apache.commons.httpclient.auth.NTLMScheme;
import org.apache.commons.httpclient.auth.RFC2617Scheme;
import org.apache.commons.httpclient.methods.GetMethod;

//import com.InteractiveAuthenticationExample.ConsoleAuthPrompter;

public class InteractiveAuthentication {

  public InteractiveAuthentication() {
   super();
  }

  public String getTicket(String url) throws IOException {

    HttpClient client = new HttpClient();
    client.getParams().setParameter(CredentialsProvider.PROVIDER, new ConsoleAuthPrompter());
    GetMethod httpget = new GetMethod(url);
    httpget.setDoAuthentication(true);

    //aritz
    String response = null;
    String ticketURLResponse = null;

    try {
      // execute the GET
      int status = client.executeMethod(httpget);

      //aritz
      if (status != HttpStatus.SC_OK) {
        System.err.println("Method failed: " + httpget.getStatusLine());
      }

      // print the status and response
      // System.out.println(httpget.getStatusLine().toString());
      // System.out.println(httpget.getResponseBodyAsString());

      response = new String(httpget.getResponseBodyAsString());
      System.out.println("response = "+response);

//      int startindex= response.indexOf("")+8;
//      int endindex = response.indexOf("");
      int startindex= response.indexOf("<ticket>")+8;
      int endindex = response.indexOf("</ticket>");

      ticketURLResponse = response.substring(startindex, endindex);
      System.out.println("ticket = "+ticketURLResponse);

    } finally {

      // release any connection resources used by the method
      httpget.releaseConnection();
    }
    return ticketURLResponse;
  }

  public class ConsoleAuthPrompter implements CredentialsProvider {

    private BufferedReader in = null;
    public ConsoleAuthPrompter() {
      super();
      this.in = new BufferedReader(new InputStreamReader(System.in));
    }

    private String readConsole() throws IOException {
      return this.in.readLine();
    }

    public Credentials getCredentials( final AuthScheme authscheme,  final String host, int port,  boolean proxy) throws CredentialsNotAvailableException {
      if (authscheme == null) {
        return null;
      }
      try{
        if (authscheme instanceof NTLMScheme) {
          System.out.println(host + ":" + port + " requires Windows authentication");
          System.out.print("Enter domain: ");
          String domain = readConsole();
          System.out.print("Enter username: ");
          String user = readConsole();
          System.out.print("Enter password: ");
          String password = readConsole();
          return new NTCredentials(user, password, host, domain);
        } else
          if (authscheme instanceof RFC2617Scheme) {
            System.out.println(host + ":" + port + " requires authentication with the realm '"+ authscheme.getRealm() + "'");
            System.out.print("Enter username: ");
            //String user = readConsole();
            String user = "boltaev";
            System.out.print("Enter password: ");
            //String password = readConsole();
            String password = "boltaev";
            return new UsernamePasswordCredentials(user, password);
          } else {
            throw new CredentialsNotAvailableException("Unsupported authentication scheme: " + authscheme.getSchemeName());
          }
      } catch (IOException e) {
        throw new CredentialsNotAvailableException(e.getMessage(), e);
      }
    }
  }
}