/*
 * Copyright © 2015 Stefan Niederhauser (nidin@gmx.ch)
 *
 * 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 guru.nidi.graphviz.engine;

public class JdkJavascriptEngine implements JavascriptEngine {
    private final JavascriptEngine engine;

    public JdkJavascriptEngine() {
        engine = newEngine();
    }

    private JavascriptEngine newEngine() {
        try {
            return new GraalJavascriptEngine();
        } catch (ExceptionInInitializerError | NoClassDefFoundError | IllegalStateException e) {
            return new NashornJavascriptEngine();
        }
    }

    @Override
    public void executeJavascript(String raw) {
        engine.executeJavascript(raw);
    }

    @Override
    public String executeJavascript(String pre, String src, String post) {
        return engine.executeJavascript(pre, src, post);
    }

    @Override
    public void close() throws Exception {
        engine.close();
    }
}
