/*
    * This software was designed and created by Jason Carroll.
    * Copyright (c) 2002, 2003, 2004 Jason Carroll.
    * The author can be reached at jcarroll@cowsultants.com
    * ITracker website: http://www.cowsultants.com
    * ITracker forums: http://www.cowsultants.com/phpBB/index.php
    *
    * This program is free software; you can redistribute it and/or modify
    * it only under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  package org.itracker.web.util;
  
  import java.util.Date;
  import java.util.HashMap;
  
  /**
   * Seems to manage the Web Sessions...
   *
   * @author ready
   */
  public class SessionManager {
      private static HashMap<String, Date> activeSessionsStarted = new HashMap<String, Date>();
      private static HashMap<String, Date> activeSessionsLastAccess = new HashMap<String, Date>();
      private static HashMap<String, Integer> activeSessionsReset = new HashMap<String, Integer>();
      private static HashMap<String, String> renamedLogins = new HashMap<String, String>();
  
      public SessionManager() {
      }
  
      public static int getNumActiveSessions() {
          return activeSessionsStarted.size();
      }
  
      public static Date getSessionStart(String login) {
          return activeSessionsStarted.get(login);
      }
  
      public static Date getSessionLastAccess(String login) {
          return  activeSessionsLastAccess.get(login);
      }
  
      public static boolean getSessionNeedsReset(String login) {
          return activeSessionsReset.get(login) != null ? true : false;
      }
  
      public static void createSession(String login) {
          Date now = new Date();
          activeSessionsStarted.put(login, now);
          activeSessionsLastAccess.put(login, now);
      }
  
      public static void invalidateSession(String login) {
          activeSessionsLastAccess.remove(login);
          activeSessionsStarted.remove(login);
          activeSessionsReset.remove(login);
      }
  
      public static void setSessionNeedsReset(String login) {
          activeSessionsReset.put(login, 1);
      }
  
      public static void addRenamedLogin(String prevLogin, String newLogin) {
          renamedLogins.put(prevLogin, newLogin);
      }
  
      public static void removeRenamedLogin(String prevLogin) {
          renamedLogins.remove(prevLogin);
      }
  
      public static String checkRenamedLogin(String prevLogin) {
          if (renamedLogins.containsKey(prevLogin)) {
              return renamedLogins.get(prevLogin);
          }
  
          return null;
      }
  
      public static void clearSessionNeedsReset(String login) {
          activeSessionsReset.remove(login);
      }
  }