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package com.sun.grizzly.cometd;

import com.sun.enterprise.web.connector.grizzly.comet.CometContext;
import com.sun.enterprise.web.connector.grizzly.comet.CometEvent;
import com.sun.grizzly.cometd.bayeux.Verb;
import com.sun.grizzly.cometd.bayeux.VerbUtils;
import com.sun.grizzly.cometd.util.JSONParser;
import java.io.IOException;

/**
 * From the Spec, an EventRouter is:
 *
 * The event router is channel based, with rules based on longest-prefix match
 * dispatching for registered listeners. The "/meta/*" channel is reserved for
 * communications with the event router itself (including connection setup,
 * tear-down, and re-connection), and all conformant clients and servers must
 * implement the following meta-channel verbs:
 *
 *      * handshake
 *	* connect
 *	* reconnect
 *	* disconnect
 *	* status
 *	* subscribe
 * 	* unsubscribe
 *	* ping
 *
 * @author Jeanfrancois Arcand
 * @author TAKAI, Naoto
 */
public class EventRouterImpl implements EventRouter{
       
    private final static String JSON_MESSAGES = "message";
    
    /**
     * The CometContext associated with this EvenrRouter.
     */
    private CometContext cometContext;
     
    
    public EventRouterImpl(CometContext cometContext) {
        this.setCometContext(cometContext);
    }

    /**
     * Route a CometD message.
     */    
    public void route(final CometdRequest req,final CometdResponse res) 
            throws IOException {

        String[] messages = req.getParameterValues(JSON_MESSAGES);        
        if (messages != null && messages.length > 0){
            for(String message: messages){
                final Verb verb = VerbUtils.parse(JSONParser.parse(message));
                
                // Notify our listener;
                getCometContext().notify(BayeuxCometHandler.newCometdContext
                        (req,res,verb),CometEvent.NOTIFY,
                                (Integer)cometContext.getAttribute(
                                    BayeuxCometHandler.BAYEUX_COMET_HANDLER));             
            }
        } 
    }  

    
    public CometContext getCometContext() {
        return cometContext;
    }

    
    public void setCometContext(CometContext cometContext) {
        this.cometContext = cometContext;
    }
     
}