/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 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.
 * Sun designates this particular file as subject to the "Classpath" exception
 * 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
 * identifying information: "Portions Copyrighted [year]
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 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
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 */

package com.sun.grizzly.cometd.bayeux;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Random;
import org.apache.tomcat.util.http.FastHttpDateFormat;

/**
 * Data representation of client/server interaction.
 *
 *	window.parent.cometd.deliver([
 *           {
 *                    // user-sent data
 *                    "data": {
 *                           "someField":	["some", "random", "values"],
 *                    },
 *                    // the usual message meta-data
 *                    "channel":		"/originating/channel",
 *                    // event ID
 *                    "id":			"slkjdlkj32",
 *                    "timestamp":	"TimeAtServer",
 *                    // optional meta-data
 *                    "authToken":	"SOME_NONCE_THAT_NEEDS_TO_BE_PROVIDED_SUBSEQUENTLY"
 *            },
 *            {
 *                    "data": {
 *                            "blah blah":	["more", "random", "values"],
 *                    },
 *                    // the usual message meta-data
 *                    "channel":		"/originating/channel",
 *                    // event ID
 *                    "id":			"slkjdlkj31",
 *                    "timestamp":	"TimeAtServer",
 *                    "authToken":	"SOME_NONCE_THAT_NEEDS_TO_BE_PROVIDED_SUBSEQUENTLY"
 *            }
 *            // , ...
 *    ]);
 *
 * @author Jeanfrancois Arcand
 */
public class Data extends VerbBase {
    
    private Random random = new Random();
    
    private HashMap<String,Object> data;

    private String connectionId;
    
    private String clientId;
    
    private String id;
    
    private String timestamp;
    
    public Data() {
        type = Verb.DATA;
    }

    public String toJSON() {        
        return "[{" 
                + "\"error\":\"" + error + "\","
                + "\"successful\":" + successful + ","                
                + "\"channel\":\"" + channel + "\"},"            
                + getJSONData();
    }

    public HashMap<String,Object> getData() {
        return data;
    }

    public void setData(HashMap<String,Object> data) {
        this.data = data;
    }
    
    public String getJSONData(){
        StringBuffer response = new StringBuffer();
        
        response.append("\n{");
        response.append("\"id\":\"");
        response.append(Long.toHexString(random.nextLong()));
        response.append("\",");
        response.append("\"timestamp\":\"");
        response.append(FastHttpDateFormat.getCurrentDate());
        response.append("\",");
        response.append("\"data\":{");        
        
        Iterator<String> iterator = data.keySet().iterator();
        String key = "";
        Object value;
        int size = data.size() -1;
        int i = 0;
        while(iterator.hasNext()){
            key = iterator.next();
            value = data.get(key);
            response.append("\"");
            response.append(key);
            response.append("\":");
            if (value instanceof String){
                response.append("\"" + value + "\"");   
            } else {
                response.append(value);  
            }
            
            if (i++ < size){
                response.append(",");
            }
        }
        response.append("},");  
        response.append("\"channel\":\"");
        response.append(channel);
        response.append("\"");
        response.append("}]");
        return response.toString();
    }

    public String getConnectionId() {
        return connectionId;
    }

    public void setConnectionId(String connectionId) {
        this.connectionId = connectionId;
    }

    public String getClientId() {
        return clientId;
    }

    public void setClientId(String clientId) {
        this.clientId = clientId;
    }
    
}