/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ResourceBundle;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import util.CookieFilter;
import util.HTMLFilter;

/**
 * Example servlet showing request headers
 */
public class CookieExample extends HttpServlet {

    private static final long serialVersionUID = 1L;

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
        ResourceBundle rb = ResourceBundle.getBundle("LocalStrings", request.getLocale());

        String cookieName = request.getParameter("cookiename");
        String cookieValue = request.getParameter("cookievalue");
        Cookie aCookie = null;
        if (cookieName != null && cookieValue != null) {
            aCookie = new Cookie(cookieName, cookieValue);
            aCookie.setPath(request.getContextPath() + "/");
            response.addCookie(aCookie);
        }

        response.setContentType("text/html");
        response.setCharacterEncoding("UTF-8");

        PrintWriter out = response.getWriter();
        out.println("<!DOCTYPE html><html>");
        out.println("<head>");
        out.println("<meta charset=\"UTF-8\" />");

        String title = rb.getString("cookies.title");
        out.println("<title>" + title + "</title>");
        out.println("</head>");
        out.println("<body bgcolor=\"white\">");

        out.println("<a href=\"../cookies.html\">");
        out.println(
                "<img src=\"../images/code.gif\" height=24 " + "width=24 align=right border=0 alt=\"view code\"></a>");
        out.println("<a href=\"../index.html\">");
        out.println(
                "<img src=\"../images/return.gif\" height=24 " + "width=24 align=right border=0 alt=\"return\"></a>");

        out.println("<h3>" + title + "</h3>");

        Cookie[] cookies = request.getCookies();
        if ((cookies != null) && (cookies.length > 0)) {
            HttpSession session = request.getSession(false);
            String sessionId = null;
            if (session != null) {
                sessionId = session.getId();
            }
            out.println(rb.getString("cookies.cookies") + "<br>");
            for (Cookie cookie : cookies) {
                String cName = cookie.getName();
                String cValue = cookie.getValue();
                out.print("Cookie Name: " + HTMLFilter.filter(cName) + "<br>");
                out.println("  Cookie Value: " + HTMLFilter.filter(CookieFilter.filter(cName, cValue, sessionId)) +
                        "<br><br>");
            }
        } else {
            out.println(rb.getString("cookies.no-cookies"));
        }

        if (aCookie != null) {
            out.println("<P>");
            out.println(rb.getString("cookies.set") + "<br>");
            out.print(rb.getString("cookies.name") + "  " + HTMLFilter.filter(cookieName) + "<br>");
            out.print(rb.getString("cookies.value") + "  " + HTMLFilter.filter(cookieValue));
        }

        out.println("<P>");
        out.println(rb.getString("cookies.make-cookie") + "<br>");
        out.print("<form action=\"");
        out.println("CookieExample\" method=POST>");
        out.print(rb.getString("cookies.name") + "  ");
        out.println("<input type=text length=20 name=cookiename><br>");
        out.print(rb.getString("cookies.value") + "  ");
        out.println("<input type=text length=20 name=cookievalue><br>");
        out.println("<input type=submit></form>");


        out.println("</body>");
        out.println("</html>");
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
        doGet(request, response);
    }

}

