/*
  http-auth - Authentication Extensions to jdk.httpserver
  Copyright (C) 2021  Ulrich Hilger

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU Affero General Public License as
  published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License
  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package de.uhilger.httpserver.auth.session;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 *
 * @author Ulrich Hilger
 * @version 1, 29.05.2021
 */
public class Sessions implements SessionManager {
  
    /** zur Zeit im Gange befindliche Sessions authentifizierter Nutzer */ 
  private final Map<String, Session> sessions;

  public Sessions() {
    sessions = new HashMap();
  }

  @Override
  public void add(Session session) {
    sessions.put(session.getId(), session);
  }

  @Override
  public void remove(String sessionId) {
    sessions.remove(sessionId);
  }

  @Override
  public void modify(String sessionId, Session session) {
    sessions.remove(sessionId);
    sessions.put(sessionId, session);
  }

  @Override
  public Session get(String sessionId) {
    Object o = sessions.get(sessionId);
    if(o instanceof Session) {
      return (Session) o;
    } else {
      return null;
    }
  }

  @Override
  public Iterator sessions() {
    return sessions.values().iterator();
  }
  
}