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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.ctakes.jdl;


import org.apache.commons.cli.*;

/**
 * Java data loader Main.
 * 
 * @author mas
 */
public final class AppMain {
	private static final String OPT_XDL_CONN_LONG = "conn";
	private static final String OPT_XDL_DATA_LONG = "data";
	private static final String OPT_XDL_LOAD_LONG = "load";
	private static final String OPT_XDL_CONN_DESCR = "conn file";
	private static final String OPT_XDL_DATA_DESCR = "data file";
	private static final String OPT_XDL_LOAD_DESCR = "load file";
	public static final String OPT_XDL_CONN = "c";
	public static final String OPT_XDL_DATA = "d";
	public static final String OPT_XDL_LOAD = "l";

	private AppMain() {
	}

	/**
	 * @return the options of the commandLine
	 */
	public static Options getOprions() {
		Option optXdlConn = new Option(OPT_XDL_CONN, OPT_XDL_CONN_LONG, true, OPT_XDL_CONN_DESCR);
		optXdlConn.setRequired(true);
		Option optXdlData = new Option(OPT_XDL_DATA, OPT_XDL_DATA_LONG, true, OPT_XDL_DATA_DESCR);
		optXdlData.setRequired(true);
		Options options = new Options();
		options.addOption(optXdlConn);
		options.addOption(optXdlData);
		options.addOption(OPT_XDL_LOAD, OPT_XDL_LOAD_LONG, true, OPT_XDL_LOAD_DESCR);
		return options;
	}

	/**
	 * @param arguments
	 *            the arguments to parse
	 * @return the commandLine
	 * @throws ParseException
	 *             exception
	 */
	public static CommandLine parsingCLI(String[] arguments) throws ParseException {
		Options options = getOprions();
		PosixParser posix = new PosixParser();
		return posix.parse(options, arguments);
	}

	/**
	 * @param args
	 *            input string
	 */
	public static void main(String[] args) {
		String cmdLineSyntax = "java [-options] -jar jarfile";
		String header = "Java Data Loader";
		try {
			// TODO refactor for jewel
			CommandLine cl = parsingCLI(args);
			String srcConn = cl.getOptionValue(OPT_XDL_CONN);
			String srcData = cl.getOptionValue(OPT_XDL_DATA);
			String srcLoad = cl.getOptionValue(OPT_XDL_LOAD);
			new AppJdl(srcConn, srcData, srcLoad).execute();
		} catch (ParseException e) {
			new HelpFormatter().printHelp(cmdLineSyntax, header, getOprions(), null, true);
		}
	}
}