/*--------------------------------------------------------------------------
 *  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
//
// Create.java
// Since: Jan 9, 2008
//
// $URL$ 
// $Author$
//--------------------------------------
package org.utgenome.shell;

import java.io.File;
import java.io.IOException;

import org.xerial.util.StringUtil;
import org.xerial.util.cui.OptionHandler;
import org.xerial.util.cui.OptionParser;
import org.xerial.util.cui.OptionParserException;
import org.xerial.util.log.Logger;

/**
 * Create sub command
 * 
 * @author leo
 * 
 */
public class Create extends UTGBShellSubCommandBase {
	private static Logger _logger = Logger.getLogger(Create.class);

	public static enum Opt {
		PROGRAM_LANGUAGE, OUTPUT_FOLDER, PACKAGE_NAME, GROUP
	}

	private OptionParser<Opt> optionParser = new OptionParser<Opt>();
	private String lang = "java";
	private String packageName = null;
	private String projectName = "default";
	private String group = "org.utgenome.track";

	public static enum OverwriteMode {
		INTERACTIVE, YES_TO_ALL, NO_TO_ALL
	}

	public Create() {
		// setup options
		/*
		 * optionParser.addOptionWithArgument(Opt.PROGRAM_LANGUAGE, "l", "lang", "PROGRAM_TYPE", "output project type
		 * (java, ruby). default=java", new OptionHandler<Opt>() { public void handle(OptionParser<Opt> parser) throws
		 * OptionParserException { lang = parser.getValue(Opt.PROGRAM_LANGUAGE); } });
		 */
		optionParser.addOptionWithArgument(Opt.PACKAGE_NAME, "p", "package", "PACKAGE_NAME", "specify the package name, e.g. org.yourdomain.track",
				new OptionHandler<Opt>() {
					public void handle(OptionParser<Opt> parser) throws OptionParserException {
						packageName = parser.getValue(Opt.PACKAGE_NAME);
					}
				});
		optionParser.addOptionWithArgument(Opt.GROUP, "g", "group", "GROUP_NAME", "specify the maven group name of this project. default = org.utgenome.track",
				new OptionHandler<Opt>() {
					public void handle(OptionParser<Opt> parser) throws OptionParserException {
						group = parser.getValue(Opt.GROUP);
					}
				});
	}

	public void execute(String[] args) throws UTGBShellException {
		// initialize the parameters
		try {
			optionParser.parse(args);
			if (optionParser.getArgumentLength() <= 0) {
				System.err.println("no project name is given.");
				return;
			}
			else
				projectName = optionParser.getArgument(0);
			for (int i = 0; i < projectName.length(); i++) {
				if (StringUtil.isWhiteSpace(projectName.substring(i, i + 1))) {
					System.err.println("project name must not contain white spaces: " + projectName);
					return;
				}
			}
			if (packageName == null)
				packageName = projectName;

			String outputFolder = globalOption.projectDir;
			if (outputFolder == null || outputFolder.length() <= 0)
				outputFolder = projectName;
			else {
				if (!outputFolder.endsWith("/"))
					outputFolder = outputFolder + "/";

				outputFolder = outputFolder + projectName;
			}

			// create the scaffold
			createScaffold(projectName, packageName, group, outputFolder, new CreateAllScaffoldFileFilter());
		}
		catch (Exception e) {
			throw new UTGBShellException(e);
		}
	}

	public static interface ScaffoldFileFilter {
		public boolean accept(String logicalPathName);
	}

	public static class CreateAllScaffoldFileFilter implements ScaffoldFileFilter {
		public boolean accept(String pathname) {
			return true;
		}
	}

	public static void createScaffold(String projectName, String packageName, String group, String outputFolder, ScaffoldFileFilter generateFileFilter)
			throws IOException, UTGBShellException {
		ScaffoldGenerator scaffoldGenerator = new ScaffoldGenerator(outputFolder, generateFileFilter);
		scaffoldGenerator.createProjectScaffold(projectName, packageName, group);
		// scaffoldGenerator.createGWTModuleScaffold(projectName, packageName);
	}

	/**
	 * Create directories including its parent folders if not exist
	 * 
	 * @param dir
	 */
	public static void mkdirs(File dir) {
		if (!dir.exists()) {
			_logger.info("create a directory: " + getPath(dir));
			dir.mkdirs();
		}
	}

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

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

	public String getOneLinerDescription() {
		return "create a new project for implmenting your own track.";
	}

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