package com.elixirtech.rest.calls.data;

/*
 * REST Call to generate a report as authenicated user using HTTPS
 */
import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;

import org.apache.commons.httpclient.Credentials;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.params.HttpClientParams;

public class GetSecureAuthData {
	
 private static final String CredentialCharset = null;

public static void main( String[] args ) {
   if( args.length < 4 ) {
    System.out.println( "Usage: java GetSecureAuthData URL filename username password" );
    //"https://localhost:8086/data/Elixir/ER_Exercises/Application-Integration/samples/datasources/FruitSales.ds" "c:\temp\data.xml" "irwintan" "irwintan"
    System.exit( 0 );
   }
   String url = args[ 0 ];
   String filename = args[ 1 ];
   String username = args[ 2 ];
   String password = args[ 3 ];
   
   try {
    HttpClient client = new HttpClient();
    Credentials defaultCreds = new UsernamePasswordCredentials(username,password);
    client.getState().setCredentials(new AuthScope("localhost",8086,AuthScope.ANY_REALM), defaultCreds);
    HttpClientParams params = client.getParams();
    params.setCredentialCharset(CredentialCharset);
    params.setAuthenticationPreemptive(true); 
    
    GetMethod method = new GetMethod( url );
    method.setFollowRedirects( true );

    // Execute the GET method
    int statusCode = client.executeMethod( method );
    if( statusCode != -1 ) {
      System.out.println( "Reading file" );
      InputStream is = method.getResponseBodyAsStream();
      BufferedInputStream bis = new BufferedInputStream( is );
      FileOutputStream fos = new FileOutputStream( filename );
      byte[] bytes = new byte[ 8192 ];
      int count = bis.read( bytes );
      while( count != -1 && count <= 8192 ) {
       System.out.print( "-" );
       fos.write( bytes, 0, count );
       count = bis.read( bytes );
      }
      if( count != -1 ) {
       fos.write( bytes, 0, count );
      }
      
//    Information regarding the request is return as the response header
      Header[] headers = method.getResponseHeaders(); 
      for (Header header : headers) { 
    	System.out.println( header.getName());
    	System.out.println( header.getValue());         
      } 
      fos.close();
      bis.close();
      method.releaseConnection();
      System.out.println( "\nDone" );    
    }
   }
   catch( Exception e ) {
    e.printStackTrace();
   }
 }
}