/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.keycloak.quickstart;

import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;

/**
 * Controller simplifies access to the server environment from the JSP.
 *
 * @author Stan Silvert ssilvert@redhat.com (C) 2015 Red Hat Inc.
 */
public class Controller {

    public boolean isLoggedIn(HttpServletRequest req) {
        return req.getUserPrincipal() != null;
    }

    public void handleLogout(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        if (isLogoutAction(req)) {
            req.logout();
            res.sendRedirect(req.getContextPath());
        }
    }

    public boolean isLogoutAction(HttpServletRequest req) {
        return getAction(req).equals("logout");
    }

    private String getAction(HttpServletRequest req) {
        if (req.getParameter("action") == null) return "";
        return req.getParameter("action");
    }
}
