/*-
    * #%L
    * prolobjectlink-jpi-jlog
    * %%
    * Copyright (C) 2012 - 2019 Prolobjectlink Project
    * %%
    * 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/gpl-3.0.html>.
   * #L%
   */
  package io.github.prolobjectlink.prolog.jlog;
  
  import java.io.IOException;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.logging.FileHandler;
  import java.util.logging.Formatter;
  import java.util.logging.Handler;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import io.github.prolobjectlink.prolog.AbstractLogger;
  import io.github.prolobjectlink.prolog.PrologLogger;
  
  /**
   * 
   * @author Jose Zalacain
   * @since 1.0
   */
  final class JLogLogger extends AbstractLogger implements PrologLogger {
  
  	private static final String MESSAGE = "Logger File Handler can't be created";
  	private static final Logger LOGGER = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
  
  	public JLogLogger() {
  		this(Level.INFO);
  	}
  
  	private JLogLogger(Level level) {
  		LOGGER.setLevel(level);
  		Logger rootlogger = LOGGER.getParent();
  		SimpleDateFormat f = new SimpleDateFormat("yyyy.MM.dd");
  		String date = f.format(new Date());
  		Formatter formatter = new JLogFormatter();
  		for (Handler h : rootlogger.getHandlers()) {
  			h.setFormatter(formatter);
  			h.setLevel(level);
  		}
  		FileHandler file = null;
  		try {
  			file = new FileHandler("%t/prolobjectlink-" + date + ".log", true);
  		} catch (SecurityException e) {
  			rootlogger.log(Level.SEVERE, MESSAGE, e);
  		} catch (IOException e) {
  			rootlogger.log(Level.SEVERE, MESSAGE, e);
  		}
  		assert file != null;
  		file.setFormatter(formatter);
  		LOGGER.addHandler(file);
  	}
  
  	public void log(Object sender, Level level, Object message, Throwable throwable) {
  		LOGGER.log(level, sender + "\n" + message, throwable);
  	}
  
  }