/*
 * Copyright 2002-2008 the original author or authors.
 *
 * 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 anyframe.sample.movie.restful.dispatch;

import java.io.InputStream;

import javax.annotation.Resource;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.ws.Provider;
import javax.xml.ws.Service;
import javax.xml.ws.ServiceMode;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.WebServiceProvider;
import javax.xml.ws.handler.MessageContext;

import org.w3c.dom.Document;

import org.apache.cxf.message.Message;

@WebServiceProvider()
@ServiceMode(value = Service.Mode.PAYLOAD)
public class MovieServicePayloadProvider implements Provider<DOMSource> {

    @Resource
    protected WebServiceContext wsContext;

    public MovieServicePayloadProvider() {
    }

    public DOMSource invoke(DOMSource request) {
        MessageContext mc = wsContext.getMessageContext();
        String path = (String) mc.get(Message.PATH_INFO);
        String query = (String) mc.get(Message.QUERY_STRING);
        String httpMethod = (String) mc.get(Message.HTTP_REQUEST_METHOD);

        System.out.println("--path--- " + path);
        System.out.println("--query--- " + query);
        System.out.println("--httpMethod--- " + httpMethod);

        if (httpMethod.equalsIgnoreCase("POST")) {
            // TBD: parse query info from DOMSource
            System.out.println("---Invoking updateMovie---");
            return updateMovie(request);
        } else if (httpMethod.equalsIgnoreCase("GET")) {
            if (path.equals("/movieservice/movies") && query == null) {
                System.out.println("---Invoking findMovieListAll---");
                return findMovieListAll();
            } else if (path.equals("/movieservice/movies") && query != null) {
                System.out.println("---Invoking findMovie---");
                return findMovie(query);
            }
        }

        return null;
    }

    private DOMSource findMovieListAll() {
        return createDOMSource("webservices/restful/dispatch/server/MovieAllResp.xml");
    }

    private DOMSource findMovie(String movieId) {
        return createDOMSource("webservices/restful/dispatch/server/Movie-"
            + movieId + "Resp.xml");
    }

    private DOMSource updateMovie(DOMSource request) {
        return createDOMSource("webservices/restful/dispatch/server/Movie-movieId=002Resp-updated.xml");
    }

    private DOMSource createDOMSource(String fileName) {
        DocumentBuilderFactory factory;
        DocumentBuilder builder;
        Document document = null;
        DOMSource response = null;

        try {
            factory = DocumentBuilderFactory.newInstance();
            // factory.setValidating(true);
            builder = factory.newDocumentBuilder();
            InputStream result =
                getClass().getClassLoader().getResourceAsStream(fileName);

            document = builder.parse(result);
            response = new DOMSource(document);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return response;
    }
}