/**
 * The MIT License (MIT)
 * Copyright (c) 2012 David Carver
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package us.nineworlds.serenity.injection;

import java.util.List;

import dagger.ObjectGraph;

public class SerenityObjectGraph {

	private ObjectGraph objectGraph;

	private static SerenityObjectGraph fusionObjectGraph;

	private SerenityObjectGraph() {
	}

	public static SerenityObjectGraph getInstance() {
		if (fusionObjectGraph == null) {
			synchronized (SerenityObjectGraph.class) {
				fusionObjectGraph = new SerenityObjectGraph();
			}
		}
		return fusionObjectGraph;
	}

	public void inject(Object injectionPoint) {
		if (objectGraph == null) {
			throw new RuntimeException(
					"ObjectGraph has not yet been created. Create a ObjectGraph with Modules.");
		}
		objectGraph.inject(injectionPoint);
	}

	public void setObjectGraph(ObjectGraph objectGraph) {
		this.objectGraph = objectGraph;
	}

	/**
	 * Creates an entirely new ObjectGraph for the application based on the
	 * provides list of modules.
	 *
	 * @param modules
	 *            List of Dagger Modules to use to construct the new object
	 *            graph.
	 */
	public void createObjectGraph(List<Object> modules) {
		objectGraph = ObjectGraph.create(modules.toArray());
	}

	public ObjectGraph getObjectGraph() {
		return objectGraph;
	}

}