/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
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 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * recipient has the option to distribute your version of this file under
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 */
package org.glassfish.jersey.tests.ejb.resources;

import java.io.IOException;

import javax.ejb.EJB;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Standalone Servlet instance that has nothing to do with Jersey.
 * It helps to compare Jersey and non-Jersey specific exception handling
 * processing.
 *
 * @author Jakub Podlesak (jakub.podlesak at oracle.com)
 */
@WebServlet(name = "StandaloneServlet", urlPatterns = {"/servlet"})
public class StandaloneServlet extends HttpServlet {

    static final String ThrowCheckedExceptionACTION = "throwCheckedException";
    static final String ThrowEjbExceptionACTION = "throwEjbException";

    @EJB ExceptionEjbResource ejbResource;

    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request.
     * @param response servlet response.
     * @throws ServletException if a servlet-specific error occurs.
     * @throws IOException if an I/O error occurs.
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        final String action = request.getParameter("action");

        if (ThrowCheckedExceptionACTION.equals(action)) {
            try {
                ejbResource.throwCheckedException();
            } catch (ExceptionEjbResource.MyCheckedException ex) {
                throw new ServletException(ex);
            }
        }

        if (ThrowEjbExceptionACTION.equals(action)) {
            ejbResource.throwEjbException();
        }

        sayHello(response);
    }

    private void sayHello(HttpServletResponse response) throws IOException {
        response.setHeader("Content-type", "text/plain");
        response.getOutputStream().print(
                String.format("Use action parameter to specify exception."
                + " \nSupported options: %s, %s.", ThrowCheckedExceptionACTION, ThrowEjbExceptionACTION));
    }
}
