/**

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * 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

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

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 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  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. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

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 * Contributor(s):

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

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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 do not indicate a

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 * 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

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 */

package org.netbeans.html.ko4j;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import org.netbeans.html.context.spi.Contexts;

import org.netbeans.html.json.spi.JSONCall;

import org.netbeans.html.json.spi.Transfer;

/** This is an implementation package - just

 * include its JAR on classpath and use official {@link Context} API

 * to access the functionality.

 * <p>

 *

 * @author Jaroslav Tulach

 */

@Contexts.Id("xhr")

final class KOTransfer

implements Transfer {

    KOTransfer() {

    }

    @Override

    public void extract(Object obj, String[] props, Object[] values) {

        LoadJSON.extractJSON(obj, props, values);

    }

    @Override

    public void loadJSON(final JSONCall call) {

        if (call.isJSONP()) {

            String me = LoadJSON.createJSONP(call);

            LoadJSON.loadJSONP(call.composeURL(me), me);

        } else {

            String data = null;

            if (call.isDoOutput()) {

                try {

                    ByteArrayOutputStream bos = new ByteArrayOutputStream();

                    call.writeData(bos);

                    data = new String(bos.toByteArray(), "UTF-8");

                } catch (IOException ex) {

                    call.notifyError(ex);

                }

            }

            LoadJSON.loadJSON(call.composeURL(null), call, call.getMethod(), data);

        }

    }

    @Override

    public Object toJSON(InputStream is) throws IOException {

        StringBuilder sb = new StringBuilder();

        InputStreamReader r = new InputStreamReader(is);

        for (;;) {

            int ch = r.read();

            if (ch == -1) {

                break;

            }

            sb.append((char)ch);

        }

        return LoadJSON.parse(sb.toString());

    }

}