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/*
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
 *
 * 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 https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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package org.atmosphere.jersey;

import java.lang.reflect.Type;
import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.spi.inject.InjectableProvider;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.Context;
import javax.ws.rs.ext.Provider;
import org.atmosphere.cpr.AtmosphereResource;
import org.atmosphere.cpr.AtmosphereResourceEvent;
import org.atmosphere.handler.ReflectorServletProcessor;

/**
 * Allow {@link AtmosphereResourceEvent} injection via the {@link Context} annotation supported
 * by Jersey.
 * 
 * @author Jeanfrancois Arcand
 */
@Provider
public class AtmosphereResourceInjector implements InjectableProvider {

    // The current {@link HttpServletrequest{
    @Context HttpServletRequest req;


    public ComponentScope getScope() {
        return ComponentScope.Singleton;
    }

    public Injectable getInjectable(ComponentContext ic, Context a, Type c) {
        if (c == AtmosphereResource.class) {

            return new Injectable() {

                /**
                 * Return the current {@link AtmosphereResourceEvent}
                 */
                public AtmosphereResource getValue() {
                    return (AtmosphereResource)
                            req.getAttribute(ReflectorServletProcessor.ATMOSPHERE_RESOURCE);
                }
            };
        }
        return null;
    }
}