/**

 * SQL-DK

 * Copyright © 2013 František Kučera (frantovo.cz)

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

package info.globalcode.sql.dk;

import info.globalcode.sql.dk.CLIOptions.MODE;

import java.util.logging.Level;

import java.util.logging.Logger;

/**

 *

 * @author Ing. František Kučera (frantovo.cz)

 */

public class CLIStarter implements ConfigurationProvider {

	private static final Logger log = Logger.getLogger(CLIStarter.class.getName());

	private CLIOptions options;

	private Configuration configuration;

	public static void main(String[] args) {

		if (args.length == 0) {

			args = new String[]{CLIParser.Tokens.INFO_HELP};

		}

		try {

			CLIParser parser = new CLIParser();

			CLIOptions options = parser.parseOptions(args);

			options.validate();

			CLIStarter starter = new CLIStarter(options);

			starter.installDefaultConfiguration();

			starter.process();

		} catch (CLIParserException e) {

			log.log(Level.SEVERE, "Unable to parse CLI options", e);

		} catch (InvalidOptionsException e) {

			log.log(Level.SEVERE, "Invalid CLI options", e);

		}

	}

	public CLIStarter(CLIOptions options) {

		this.options = options;

	}

	private void process() {

		/** Show info */

		if (!options.getShowInfo().isEmpty()) {

			InfoLister infoLister = new InfoLister(System.err, this);

			infoLister.showInfo(options);

		}

		MODE mode = options.getMode();

		switch (mode) {

			case QUERY_NOW:

				break;

			case PREPARE_BATCH:

				break;

			case EXECUTE_BATCH:

				break;

			case JUST_SHOW_INFO:

				// already done above

				break;

			default:

				log.log(Level.SEVERE, "Unsupported mode: {0}", mode);

				break;

		}

	}

	@Override

	public Configuration getConfiguration() {

		if (configuration == null) {

			configuration = loadConfiguration();

		}

		return configuration;

	}

	private void installDefaultConfiguration() {

		/**

		 * TODO: check config folder/file and create it if missing

		 */

	}

	private Configuration loadConfiguration() {

		/**

		 * TODO: load configuration from XML

		 */

		return null;

	}

}