/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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.jboss.cdi.tck.tests.context.session;

import java.io.IOException;

import javax.enterprise.context.SessionScoped;
import javax.enterprise.inject.spi.BeanManager;
import javax.inject.Inject;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;

import org.jboss.cdi.tck.util.SimpleLogger;

@WebFilter(filterName = "FilterTest", displayName = "Test Filter for Sessions", urlPatterns = "/SimplePage.html")
public class TestFilter implements Filter {

	private static final SimpleLogger logger = new SimpleLogger(
			TestFilter.class);

	@Inject
	private BeanManager beanManager;

	@Inject
	private SimpleSessionBean simpleBean;

	public void destroy() {
		beanManager = null;
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		logger.log("Do filter...");
		checkSessionContextActive();
		chain.doFilter(request, response);
		checkSessionContextActive();

	}

	public void init(FilterConfig filterConfig) throws ServletException {
	}

	private void checkSessionContextActive() throws ServletException {
		if (beanManager == null
				|| !beanManager.getContext(SessionScoped.class).isActive()
				|| simpleBean == null) {
			throw new ServletException("Session context is not active");
		}
		// Check bean invocation
		simpleBean.getId();
	}

}
