/**

  * copy-image-resizer

  * 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 cz.frantovo.copyImageResizer.logging;

 import cz.frantovo.copyImageResizer.logging.ColorfulPrintWriter.TerminalColor;

 import cz.frantovo.copyImageResizer.logging.ColorfulPrintWriter.TerminalStyle;

 import java.io.StringWriter;

 import java.util.logging.Formatter;

 import java.util.logging.Level;

 import java.util.logging.LogRecord;

 /**

  * For console/terminal log output. Log messages are printed in brief and colorful form.

  *

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

  */

 public class ColorfulConsoleFormatter extends Formatter {

 	private boolean printStacktrace = false;

 	@Override

 	public String format(LogRecord r) {

 		StringWriter sw = new StringWriter();

 		try (ColorfulPrintWriter out = new ColorfulPrintWriter(sw)) {

 			printLevel(out, r.getLevel());

 			printMessage(out, r);

 			printThrowable(out, r);

 			out.println();

 		}

 		return sw.toString();

 	}

 	private void printLevel(ColorfulPrintWriter out, Level l) {

 		TerminalColor color = TerminalColor.Magenta;

 		if (l == Level.SEVERE) {

 			color = TerminalColor.Red;

 		} else if (l == Level.WARNING) {

 			color = TerminalColor.Yellow;

 		}

 		out.print(color, rpad(l.getLocalizedName() + ": ", 10));

 	}

 	private void printMessage(ColorfulPrintWriter out, LogRecord r) {

 		out.print(formatMessage(r));

 	}

 	private void printThrowable(ColorfulPrintWriter out, LogRecord r) {

 		Throwable t = r.getThrown();

 		if (t != null) {

 			out.print(": ");

 			out.print(TerminalColor.Red, t.getClass().getSimpleName());

 			String message = t.getLocalizedMessage();

 			if (message != null) {

 				out.print(": ");

 				out.print(message);

 			}

 			if (printStacktrace) {

 				out.println();

 				out.setForegroundColor(TerminalColor.Yellow);

 				out.setStyle(TerminalStyle.Dim);

 				t.printStackTrace(out);

 				out.resetAll();

 			}

 		}

 	}

 	public boolean isPrintStacktrace() {

 		return printStacktrace;

 	}

 	public void setPrintStacktrace(boolean printStacktrace) {

 		this.printStacktrace = printStacktrace;

 	}

 	private static String rpad(String s, int n) {

 		if (n > 0) {

 			return String.format("%1$-" + n + "s", s);

 		} else {

 			return s;

 		}

 	}

 }