/*--------------------------------------------------------------------------
 *  Copyright 2008 utgenome.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.
 *--------------------------------------------------------------------------*/
//--------------------------------------
// utgb-shell Project
//
// Add.java
// Since: Jan 9, 2008
//
// $URL$ 
// $Author$
//--------------------------------------
package org.utgenome.shell;

import java.text.DateFormat;
import java.util.Date;
import java.util.Properties;

import org.utgenome.config.TrackConfiguration;
import org.xerial.util.cui.OptionHandler;
import org.xerial.util.cui.OptionParser;
import org.xerial.util.cui.OptionParserException;
import org.xerial.util.log.Logger;

/**
 * A UTGBShell subcommand for adding new action class
 * 
 * @author leo
 * 
 */
public class AddAction extends UTGBShellSubCommandBase {

	private static Logger _logger = Logger.getLogger(AddAction.class);

	enum Opt {
		PACKAGE,
	}

	private OptionParser<Opt> optionParser = new OptionParser<Opt>();

	private String packageName = null;

	public AddAction() {
		optionParser.addOptionWithArgument(Opt.PACKAGE, "p", "package", "PACKAGE", "base package name to add a new action class", new OptionHandler<Opt>() {
			public void handle(OptionParser<Opt> parser) throws OptionParserException {
				packageName = parser.getValue(Opt.PACKAGE);
			}
		});
	}

	@Override
	public void execute(String[] args) throws UTGBShellException {
		try {
			optionParser.parse(args);

			if (optionParser.getArgumentLength() <= 0) {
				throw new UTGBShellException("no target is given.");
			}

			String target = optionParser.getArgument(0);
			if (packageName == null) {
				// load the package name from the track-config.xml
				TrackConfiguration config = loadTrackConfiguration();
				packageName = config.getPackage();
			}
			String appPackageName = packageName + "." + APP_FOLDER;

			String newActionClassFullPath = appPackageName + "." + target.replaceAll("/", ".");
			_logger.info("add a new action class : " + newActionClassFullPath);

			int extPos = newActionClassFullPath.lastIndexOf(".");
			String actionClassName = (extPos > 0) ? newActionClassFullPath.substring(extPos + 1) : newActionClassFullPath;
			String actionPackageName = (extPos > 0) ? newActionClassFullPath.substring(0, extPos) : appPackageName;

			// create an action class
			Properties prop = new Properties();
			prop.put("actionClass", actionClassName);
			prop.put("actionPackage", actionPackageName);
			Date now = new Date();
			prop.put("date", DateFormat.getDateInstance().format(now));

			String javaFileName = SRC_FOLDER + "/" + newActionClassFullPath.replaceAll("\\.", "/") + ".java";
			createFileFromTemplate(AddAction.class, "template/java/Action.java.template", javaFileName, prop);

		}
		catch (Exception e) {
			throw new UTGBShellException(e);
		}
	}

	@Override
	public String name() {
		return "action";
	}

	public String getOneLinerDescription() {
		return "add a new web action handler";
	}

	public String getDetailedDescription() {
		return loadUsage("help-add.txt");
	}

	public String getOptionList() {
		return optionParser.helpMessage();
	}

}