/**
 * JWAP - A Java Implementation of the WAP Protocols
 * Copyright (C) 2001-2004 Niko Bender
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package net.sourceforge.jwap.util;

import java.util.*;


/**
 * This class is a wrapper for the Log4J Logger. If Log4J is available on
 * the classpath, it will forward calls to Log4Js Logger.
 *
 * @author Michel Marti
 */
public class Logger
{
    private static boolean log4jAvailable;
    private static Logger voidLogger;

    private Logger(){}

    static
    {
        // Check if log4j is available...
        try {
            Class.forName("org.apache.log4j.Logger");
            log4jAvailable=true;
            //System.out.println("ok");
        } catch(Exception unknown) {
            voidLogger = new Logger();
            //System.out.println("failed");
        }
    }

    public static Logger getLogger(Class category)
    {
        return getLogger(category==null?null:category.getName());
    }

    public static Logger getLogger(String category)
    {
        if( log4jAvailable ) {
            return new Log4jLogger(category);
        } else {
            return voidLogger;
        }
    }

    public void debug(Object msg) {}
    public void debug(Object msg, Throwable throwable) {}
    public void error(Object msg) {}
    public void error(Object msg, Throwable throwable) {}
    public void fatal(Object msg) {}
    public void fatal(Object msg, Throwable throwable) {}
    public void info(Object msg) {}
    public void info(Object msg, Throwable throwable) {}
    public boolean isDebugEnabled() {
        return false;
    }
    public boolean isInfoEnabled() {
        return false;
    }
    public void warn(Object msg) {}
    public void warn(Object msg, Throwable throwable) {}

    /**
     * Initialize the logging system if it is not yet initalized.
     */
    public static void initLogSystem(boolean verbose) {
        if(log4jAvailable) {
            Log4jLogger.initLogSystem(verbose);
        }
    }

  /**
   * wapptrlog
   *
   * @param logstr String[]
   */
  public void wapptrlog(String[] logstr) {
  }

  private static final class Log4jLogger extends Logger
    {
        private org.apache.log4j.Logger logger;
        Log4jLogger(String category) {
            logger = org.apache.log4j.Logger.getLogger(category);
        }

        public void debug(Object msg, Throwable throwable) {
            logger.debug(msg,throwable);
        }

        public void debug(Object msg) {
            logger.debug(msg);
        }

        public void error(Object msg, Throwable throwable) {
            logger.error(msg,throwable);
        }

        public void error(Object msg) {
            logger.error(msg);
        }

        public void fatal(Object msg, Throwable throwable) {
            logger.fatal(msg,throwable);
        }

        public void fatal(Object msg) {
            logger.fatal(msg);
        }

        public void info(Object msg, Throwable throwable) {
            logger.info(msg, throwable);
        }

        public void info(Object msg) {
            logger.info(msg);
        }

        public boolean isDebugEnabled() {
            return  true;//logger.isDebugEnabled();
        }

        public boolean isInfoEnabled() {
            return true;//logger.isInfoEnabled();
        }

        public void warn(Object msg, Throwable throwable) {
            logger.warn(msg, throwable);
        }

        public void warn(Object msg) {
            logger.warn(msg);
        }

        public static final void initLogSystem(boolean verbose)
        {
            if (!isLogSystemConfigured()) {
                //org.apache.log4j.BasicConfigurator.configure();
                //org.apache.log4j.Logger.getRootLogger().removeAllAppenders();
               // org.apache.log4j.Logger.getRootLogger().addAppender(new org.apache.log4j.ConsoleAppender(
                       // new org.apache.log4j.PatternLayout("jWAP:\t%m%n"), org.apache.log4j.ConsoleAppender.SYSTEM_OUT));
             try {
              String currentdir=System.getProperty("user.dir");
              String UserdirPath=currentdir+"\\"+".\\conf\\log4j.properties";
               org.apache.log4j.PropertyConfigurator.configure(UserdirPath);
               /*org.apache.log4j.Logger.getRootLogger().addAppender(new org.
                   apache.log4j.FileAppender(
                       new org.apache.log4j.PatternLayout("jWAP:\t%m%n"),
                       "tt.txt",false));*/
             }
           catch(Exception e)
           {
           }
               // org.apache.log4j.Logger.getRootLogger().setLevel(verbose ? org.apache.log4j.Level.INFO: org.apache.log4j.Level.WARN);
            //org.apache.log4j.Logger.getRootLogger().setLevel(verbose ? org.apache.log4j.Level.INFO: org.apache.log4j.Level.ALL);

             }
        }

        private static final boolean isLogSystemConfigured() {
            Enumeration enum1 = org.apache.log4j.Logger.getRoot().getAllAppenders();

            if ((enum1!= null) &&
                    !(enum1 instanceof org.apache.log4j.helpers.NullEnumeration)) {
                return true;
            } else {
                Enumeration loggers = org.apache.log4j.LogManager.getCurrentLoggers();

                while (loggers.hasMoreElements()) {
                    org.apache.log4j.Logger c = (org.apache.log4j.Logger) loggers.nextElement();

                    if (!(c.getAllAppenders() instanceof org.apache.log4j.helpers.NullEnumeration)) {
                        return true;
                    }
                }
            }
            return false;
        }
    }
}