import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import jdbm.RecordManager;
import jdbm.RecordManagerFactory;
import jdbm.helper.FastIterator;
import jdbm.htree.HTree;

/*
 * 7.1
 * Karl-Adam Karlsson
 * 06-11-06
 * DBM
 * 
 *
 */

public class DbmServlet extends HttpServlet {
	RecordManager  recmng;
    HTree          hashtable;
    FastIterator   itera;
    String         time;
    String         remAdr;
    String		   remUsAg;
	
  
	
  public void doGet( HttpServletRequest req, HttpServletResponse res )
    throws IOException
  {

	res.setContentType( "text/plain" );
	PrintWriter targetClient = res.getWriter();
	
	///////////////////////////////////////////
	
	Properties properties = new Properties();
    recmng = RecordManagerFactory.createRecordManager( "poster", properties );
	
	//Ladda eller skapa ny.
	long recid = recmng.getNamedObject( "data" );
        if ( recid != 0 ) {
            hashtable = HTree.load( recmng, recid );
            //showBasket();
        } else {
            hashtable = HTree.createInstance( recmng );
            recmng.setNamedObject( "data", hashtable.getRecid() );
        }
    
    ///////////////////////////////////////////
     
    
    time = Calendar.getInstance().getTime().toString();
 	remAdr = req.getRemoteAddr();
 	remUsAg = req.getHeader("User-Agent");
    
    String allData = remAdr.concat("##").concat(remUsAg);
    // allData = adress##useragent
    
    hashtable.put( time, allData );
    recmng.commit();
    
    printAll(targetClient);
    

  }//end of doGet
  
  /*
   * Dopost för POST-funktionalitet
   */
  protected void doPost(HttpServletRequest req,
                       HttpServletResponse res) throws ServletException, IOException
  {
  		doGet( req, res );
  }
  ///////////////////////////////////////////
  
  public void printAll(PrintWriter targetClient) 
        throws IOException
    {
        
        String allDat;
        String usragent;
        String remAddress;
        
        itera = hashtable.keys();
        time = (String) itera.next();
        
        while ( time != null ) {
        	
        	
        	allDat = (String) hashtable.get( time );
        	remAddress = allDat.split("##")[0];
        	usragent = allDat.split("##")[1];
        	
        	targetClient.println("");
            targetClient.print( "TID: "+ time +"\n" );
            targetClient.print( "REMOTE_ADDR: "+ remAddress +"\n" );
            targetClient.print( "REMOTE_USER_AGENT: "+ usragent +"\n" );
            targetClient.println("");
         
         	time = (String) itera.next();      
        }
       
    }//end of printall
  

}