/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. 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_1_1.html
 * or packager/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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * 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
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package restful.server;

import javax.annotation.Resource;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.ws.BindingType;
import javax.xml.ws.Provider;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.WebServiceProvider;
import javax.xml.ws.handler.MessageContext;
import javax.xml.ws.http.HTTPBinding;
import javax.xml.ws.http.HTTPException;
import java.io.ByteArrayInputStream;
import java.util.StringTokenizer;

@WebServiceProvider
@BindingType(value=HTTPBinding.HTTP_BINDING)
public class AddNumbersImpl implements Provider<Source> {

    @Resource(type=Object.class)
    protected WebServiceContext wsContext;

    public Source invoke(Source source) {
        try {
            MessageContext mc = wsContext.getMessageContext();
            String query = (String)mc.get(MessageContext.QUERY_STRING);
            String path = (String)mc.get(MessageContext.PATH_INFO);
            System.out.println("Query String = "+query);
            System.out.println("PathInfo = "+path);
            if (query != null && query.contains("num1=") &&
                query.contains("num2=")) {
                return createSource(query);
            } else if (path != null && path.contains("/num1") &&
                       path.contains("/num2")) {
                return createSource(path);
            } else {
                throw new HTTPException(404);
            }
        } catch(Exception e) {
            e.printStackTrace();
            throw new HTTPException(500);
        }
    }
    
    private Source createSource(String str) {
        StringTokenizer st = new StringTokenizer(str, "=&/");
        String token = st.nextToken();
        int number1 = Integer.parseInt(st.nextToken());
        st.nextToken();
        int number2 = Integer.parseInt(st.nextToken());
        int sum = number1+number2;
        String body =
            "<ns:addNumbersResponse xmlns:ns=\"http://duke.example.org\"><ns:return>"
            +sum
            +"</ns:return></ns:addNumbersResponse>";
        Source source = new StreamSource(
            new ByteArrayInputStream(body.getBytes()));
        return source;
    }
    
}
