/**

 * 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

 * License.  When distributing the software, include this License Header

 * 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

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * Contributor(s):

 *

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

 * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.

 *

 * 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

 * 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

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 */

package org.netbeans.html.ko4j;

import net.java.html.js.JavaScriptBody;

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

/**

 *

 * @author Jaroslav Tulach

 */

final class LoadJSON {

    private LoadJSON() {}

    static String createJSONP(JSONCall whenDone) {

        int h = whenDone.hashCode();

        String name;

        for (;;) {

            name = "jsonp" + Integer.toHexString(h);

            if (defineIfUnused(name, whenDone)) {

                return name;

            }

            h++;

        }

    }

    @JavaScriptBody(args = {"name", "done"}, javacall = true, body

        = "if (window[name]) return false;\n "

        + "window[name] = function(data) {\n "

        + "  delete window[name];\n"

        + "  var el = window.document.getElementById(name);\n"

        + "  el.parentNode.removeChild(el);\n"

        + "  done.@org.netbeans.html.json.spi.JSONCall::notifySuccess(Ljava/lang/Object;)(data);\n"

        + "};\n"

        + "return true;\n"

    )

    private static boolean defineIfUnused(String name, JSONCall done) {

        return true;

    }

    @JavaScriptBody(args = {"s"}, body = "return eval('(' + s + ')');")

    static Object parse(String s) {

        return s;

    }

    @JavaScriptBody(args = {"url", "done", "method", "data", "hp"}, javacall = true, body = ""

        + "var request = new XMLHttpRequest();\n"

        + "if (!method) method = 'GET';\n"

        + "request.open(method, url, true);\n"

        + "request.setRequestHeader('Content-Type', 'application/json; charset=utf-8');\n"

        + "for (var i = 0; i < hp.length; i += 2) {\n"

        + "  var h = hp[i];\n"

        + "  var v = hp[i + 1];\n"

        + "  request.setRequestHeader(h, v);\n"

        + "}\n"

        + "request.onreadystatechange = function() {\n"

        + "  if (request.readyState !== 4) return;\n"

        + "  var r = request.response || request.responseText;\n"

        + "  try {\n"

        + "    var str = r;\n"

        + "    if (request.status !== 0)\n"

        + "      if (request.status < 100 || request.status >= 400) throw request.status + ': ' + request.statusText;"

        + "    try { r = eval('(' + r + ')'); } catch (ignore) { }"

        + "    @org.netbeans.html.ko4j.KOTransfer::notifySuccess(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)(done, str, r);\n"

        + "  } catch (error) {;\n"

        + "    @org.netbeans.html.ko4j.KOTransfer::notifyError(Ljava/lang/Object;Ljava/lang/Object;)(done, error);\n"

        + "  }\n"

        + "};\n"

        + "request.onerror = function (e) {\n"

        + "  @org.netbeans.html.ko4j.KOTransfer::notifyError(Ljava/lang/Object;Ljava/lang/Object;)(done, e.type + ' status ' + request.status);\n"

        + "};\n"

        + "if (data) request.send(data);\n"

        + "else request.send();\n"

    )

    static void loadJSON(

        String url, JSONCall done, String method, String data, Object[] headerPairs

    ) {

    }

    @JavaScriptBody(args = {"url", "jsonp"}, body

        = "var scrpt = window.document.createElement('script');\n "

        + "scrpt.setAttribute('src', url);\n "

        + "scrpt.setAttribute('id', jsonp);\n "

        + "scrpt.setAttribute('type', 'text/javascript');\n "

        + "var body = document.getElementsByTagName('body')[0];\n "

        + "body.appendChild(scrpt);\n"

    )

    static void loadJSONP(String url, String jsonp) {

    }

    static void extractJSON(Object jsonObject, String[] props, Object[] values) {

        for (int i = 0; i < props.length; i++) {

            values[i] = Knockout.getProperty(jsonObject, props[i]);

        }

    }

}