/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.bck2brwsr.ko2brwsr;

import java.io.IOException;

import java.net.URI;

import java.net.URISyntaxException;

import java.net.URL;

import java.util.Map;

import net.java.html.BrwsrCtx;

import org.apidesign.bck2brwsr.core.JavaScriptBody;

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

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

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

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

import org.netbeans.html.json.tck.KnockoutTCK;

import org.netbeans.html.ko4j.KO4J;

import org.openide.util.lookup.ServiceProvider;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

@ServiceProvider(service = KnockoutTCK.class)

public final class Bck2BrwsrKnockoutImpl extends KnockoutTCK {

    static Class[] createClasses() {

        final Class<?>[] arr = testClasses();

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

            if (arr[i].getSimpleName().startsWith("GC")) {

                arr[i] = Object.class;

            }

        }

        return arr;

    }

    @Override

    public BrwsrCtx createContext() {

        KO4J ko = new KO4J(null);

        return Contexts.newBuilder().

            register(Transfer.class, ko.transfer(), 9).

            register(WSTransfer.class, ko.websockets(), 9).

            register(Technology.class, ko.knockout(), 9).build();

    }

    @Override

    public Object createJSON(Map<String, Object> values) {

        Object json = createJSON();

        for (Map.Entry<String, Object> entry : values.entrySet()) {

            putValue(json, entry.getKey(), entry.getValue());

        }

        return json;

    }

    @JavaScriptBody(args = {}, body = "return new Object();")

    private static native Object createJSON();

    @JavaScriptBody(args = { "json", "key", "value" }, body = "json[key] = value;")

    private static native void putValue(Object json, String key, Object value);

    @Override

    public Object executeScript(String script, Object[] arguments) {

        return execScript(script, arguments);

    }

    @JavaScriptBody(args = { "s", "args" }, body = 

        "var f = new Function(s); return f.apply(null, args);"

    )

    private static native Object execScript(String s, Object[] arguments);

    @JavaScriptBody(args = {  }, body = 

          "var h;"

        + "if (!!window && !!window.location && !!window.location.href)\n"

        + "  h = window.location.href;\n"

        + "else "

        + "  h = null;"

        + "return h;\n"

    )

    private static native String findBaseURL();

    @Override

    public URI prepareURL(String content, String mimeType, String[] parameters) {

        try {

            final URL baseURL = new URL(findBaseURL());

            StringBuilder sb = new StringBuilder();

            sb.append("/dynamic?mimeType=").append(mimeType);

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

                sb.append("&param" + i).append("=").append(parameters[i]);

            }

            String mangle = content.replace("\n", "%0a")

                .replace("\"", "\\\"").replace(" ", "%20");

            sb.append("&content=").append(mangle);

            URL query = new URL(baseURL, sb.toString());

            String uri = (String) query.getContent(new Class[] { String.class });

            URI connectTo = new URI(uri.trim());

            return connectTo;

        } catch (IOException ex) {

            throw new IllegalStateException(ex);

        } catch (URISyntaxException ex) {

            throw new IllegalStateException(ex);

        }

    }    

}