/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012 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.emul;

import java.lang.annotation.Annotation;

import org.apidesign.bck2brwsr.core.JavaScriptBody;

/**

 *

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

 */

public final class AnnotationImpl implements Annotation {

    public Class<? extends Annotation> annotationType() {

        return getClass();

    }

    @JavaScriptBody(args = { "a", "n", "values" }, body = ""

        + "function f(v, p) {\n"

        + "  var val = v;\n"

        + "  var prop = p;\n"

        + "  return function() {\n"

        + "    return val[prop];\n"

        + "  };\n"

        + "}\n"

        + "var props = Object.getOwnPropertyNames(values);\n"

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

        + "  var p = props[i];\n"

        + "  a[p] = new f(values, p);\n"

        + "}\n"

        + "a['$instOf_' + n] = true;\n"

        + "return a;"

    )

    private static <T extends Annotation> T create(AnnotationImpl a, String n, Object values) {

        return null;

    }

    public static <T extends Annotation> T create(Class<T> annoClass, Object values) {

        return create(new AnnotationImpl(), annoClass.getName().replace('.', '_'), values);

    }

    public static Annotation[] create(Object anno) {

        String[] names = findNames(anno);

        Annotation[] ret = new Annotation[names.length];

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

            String n = names[i].substring(1, names[i].length() - 1).replace('/', '_');

            ret[i] = create(new AnnotationImpl(), n, findData(anno, names[i]));

        }

        return ret;

    }

    @JavaScriptBody(args = "anno", body =

          "var arr = new Array();"

        + "var props = Object.getOwnPropertyNames(anno);\n"

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

        + "  var p = props[i];\n"

        + "  arr.push(p);"

        + "}"

        + "return arr;"

    )

    private static String[] findNames(Object anno) {

        throw new UnsupportedOperationException();

    }

    @JavaScriptBody(args={ "anno", "p"}, body="return anno[p];")

    private static Object findData(Object anno, String p) {

        throw new UnsupportedOperationException();

    }

}