/*
 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * 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.
 *
 * Contributors:
 *     bstefanescu
 */
package org.nuxeo.ecm.webengine.jaxrs.scan;

import java.io.IOException;
import java.util.Set;

import javax.ws.rs.core.Application;

import org.osgi.framework.Bundle;

/**
 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
 */
public abstract class DynamicApplication extends Application {

    protected abstract Bundle getBundle();

    protected String getPackageBase() {
        String packageBase = getClass().getName();
        int i = packageBase.lastIndexOf('.');
        if (i > -1) {
            packageBase = packageBase.substring(0, i);
        }
        return packageBase.replace('.', '/');
    }

    @Override
    public Set<Class<?>> getClasses() {
        try {
            Scanner scanner = new Scanner(getBundle(), getPackageBase());
            scanner.scan();
            return scanner.getClasses();
        } catch (ReflectiveOperationException | IOException e) {
            throw new RuntimeException("Failed to scan classes", e);
        }
    }

}