/*
 * Copyright (c) 2011-2016, Peter Abeles. All Rights Reserved.
 *
 * This file is part of BoofCV (http://boofcv.org).
 *
 * 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 boofcv.app;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * Application which provides help for command-line applications
 *
 * @author Peter Abeles
 */
public class Help {

	static Class []options = new Class[]{
			CreateFiducialSquareImage.class,
			CreateFiducialSquareBinary.class,
			BatchRemoveLensDistortion.class,
			BatchDownSizeImage.class,
			FiducialDetection.class,
			CameraCalibration.class,
			CreateCalibrationTarget.class};

	public static void printHelp() {
		System.out.println("Trying to run a command-line application?  Here are your options!");
		System.out.println();

		for( Class c : options ) {
			System.out.println("  "+c.getName());
		}
		System.out.println("Example:");
		System.out.println("java -cp applications.jar "+CreateFiducialSquareImage.class.getSimpleName());
	}

	public static void main(String[] args) {
		if( args.length > 0 ) {
			String truncated[] = new String[args.length-1];
			System.arraycopy(args, 1, truncated, 0, truncated.length);

			try {
				Class appClass = Class.forName("boofcv.app."+args[0]);

				Method m = appClass.getMethod("main",String[].class);

				m.invoke(null,new Object[]{truncated});
			} catch (ClassNotFoundException e) {
				printHelp();
				System.out.println();
				System.out.println("Can't find application for "+args[0]);
			} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
				throw new RuntimeException(e);
			}
		} else {
			System.out.println("Trying to run a command-line application?  Here are your options!");
			System.out.println();

			for (Class c : options) {
				System.out.println("  " + c.getSimpleName());
			}
			System.out.println("Example:");
			System.out.println("java -jar applications.jar " + CreateFiducialSquareImage.class.getSimpleName());
		}
	}
}