/*
 * $RCSFile$
 *
 * Created on 06.12.2006
 * for Project: 
 * by steins
 *
 * (C) 2005-2006 by 
 */
package beans;

import static util.DigestUtils.md5;

import java.util.List;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.persistence.EntityManager;
import javax.persistence.EntityTransaction;
import javax.persistence.Query;

import jpa.EntityManagerFactorySingleton;
import jpa.User;

@ManagedBean(name = "UserManager")
@SessionScoped
public class UserManager
{
   private User current;

   private boolean loggedIn;

   public UserManager()
   {
      current = new User();
   }

   public String login()
   {
      String outcome = "failure";
      if (current.getUsername() != null && current.getUsername().length() > 0
            && current.getPassword() != null
            && current.getPassword().length() > 0)
      {
         EntityManager manager = EntityManagerFactorySingleton.getInstance()
               .getEntityManagerFactory().createEntityManager();
         Query query = manager.createQuery(
               "SELECT u FROM User u where u.username = :username and u.password = :password");
         query.setParameter("username", current.getUsername());
         query.setParameter("password", md5(current.getPassword()));
         List results = query.getResultList();

         if (!results.isEmpty())
         {
            loggedIn = true;
            current = (User) results.get(0);
            outcome = "success";
         }

         manager.close();
      }
      // System.out.println(outcome);
      return outcome;
   }

   public String logout()
   {
      loggedIn = false;
      current = new User();
      return "home";
   }

   public void setUsername(String username)
   {
      current.setUsername(username);
   }

   public String getUsername()
   {
      return current.getUsername();
   }

   public void setPassword(String password)
   {
      current.setPassword(password);
   }

   public String getPassword()
   {
      return current.getPassword();
   }

   public boolean isLoggedIn()
   {
      return loggedIn;
   }

   public User getCurrent()
   {
      EntityManager manager = EntityManagerFactorySingleton.getInstance()
            .getEntityManagerFactory().createEntityManager();

      EntityTransaction tx = manager.getTransaction();
      tx.begin();
      try
      {
         current = manager.find(User.class, getUsername());

         tx.commit();
      }
      catch (Exception ex)
      {
         ex.printStackTrace(System.err);
         tx.rollback();
      }

      manager.close();

      return current;
   }
}