UserCookieGenerator.java

/*
 * Copyright 2011 the original author or authors.
 * 
 * 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 com.captaindebug.social.facebookposts.implementation;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.util.CookieGenerator;

/**
 * Utility class for managing the quick_start user cookie that remembers the signed-in user.
 * 
 * @author Keith Donald
 */
public final class UserCookieGenerator {

	private final CookieGenerator cookieGenerator = new CookieGenerator();

	public UserCookieGenerator() {
		cookieGenerator.setCookieName("captain_debug_social_user");
	}

	public void addCookie(String userId, HttpServletResponse response) {
		cookieGenerator.addCookie(response, userId);
	}

	public void removeCookie(HttpServletResponse response) {
		cookieGenerator.addCookie(response, "");
	}

	public String readCookieValue(HttpServletRequest request) {
		Cookie[] cookies = request.getCookies();
		if (cookies == null) {
			return null;
		}
		for (Cookie cookie : cookies) {
			if (cookie.getName().equals(cookieGenerator.getCookieName())) {
				return cookie.getValue();
			}
		}
		return null;
	}

}