/**

 * copy-image-resizer

 * Copyright © 2014 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 cz.frantovo.copyImageResizer.cli;

import cz.frantovo.copyImageResizer.Counters;

import cz.frantovo.copyImageResizer.InvalidOptionsException;

import cz.frantovo.copyImageResizer.RecursiveException;

import cz.frantovo.copyImageResizer.RecursiveImageResizer;

import cz.frantovo.copyImageResizer.RecursiveOptions;

import cz.frantovo.copyImageResizer.ResizeException;

import java.util.logging.Level;

import java.util.logging.LogRecord;

import java.util.logging.Logger;

/**

 *

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

 */

public class CLIStarter {

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

	// help:exit-codes

	public static final int EXIT_SUCCESS = 0; // doc:success

	public static final int EXIT_UNEXPECTED_ERROR = 1; // doc:unexpected error (probably bug)

	// 2 is reserved: http://www.tldp.org/LDP/abs/html/exitcodes.html#EXITCODESREF

	//public static final int EXIT_SQL_ERROR = 3; // ___:SQL error

	public static final int EXIT_CLI_PARSE_ERROR = 4; // doc:CLI options parse error

	public static final int EXIT_CLI_VALIDATE_ERROR = 5; // doc:CLI options validation error

	//public static final int EXIT_CONFIGURATION_ERROR = 6; // ___:configuration error

	public static final int EXIT_IMAGE_ERROR = 7; // doc:image error

	public static final int EXIT_RECURSIVE_ERROR = 8; // doc:recursive error

	public static void main(String[] args) {

		int exitCode;

		try {

			CLIParser parser = new CLIParser();

			RecursiveOptions options = parser.parseOptions(args);

			options.validate();

			RecursiveImageResizer resizer = new RecursiveImageResizer(options);

			Counters counters = resizer.resize();

			if (options.getErrorMode() == RecursiveOptions.ERROR_MODE.SILENT_SKIP || counters.get(Counters.COUNTER_TYPE.SKIPPED_ERROR) == 0) {

				log.log(Level.INFO, "Recursive copy/resize succesfully finished. {0}", counters);

				exitCode = EXIT_SUCCESS;

			} else {

				log.log(Level.SEVERE, "Recursive copy/resize finished with errors. {0}", counters);

				exitCode = EXIT_IMAGE_ERROR;

			}

		} catch (CLIParserException e) {

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

			exitCode = EXIT_CLI_PARSE_ERROR;

		} catch (InvalidOptionsException e) {

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

			for (InvalidOptionsException.OptionProblem p : e.getProblems()) {

				LogRecord r = new LogRecord(Level.SEVERE, "Option problem: {0}");

				r.setThrown(p.getException());

				r.setParameters(new Object[]{p.getDescription()});

				log.log(r);

			}

			exitCode = EXIT_CLI_VALIDATE_ERROR;

		} catch (RecursiveException e) {

			log.log(Level.SEVERE, "Error while processing filesystem hierarchy", e);

			exitCode = EXIT_RECURSIVE_ERROR;

		} catch (ResizeException e) {

			log.log(Level.SEVERE, "Error while resizing image", e);

			exitCode = EXIT_IMAGE_ERROR;

		}

		System.exit(exitCode);

	}

}