/*
 * Copyright 2012 - 2013 Anton Tananaev (anton.tananaev@gmail.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.traccar.helper;

import java.io.IOException;
import java.util.Properties;
import org.apache.log4j.Appender;
import org.apache.log4j.DailyRollingFileAppender;
import org.apache.log4j.Layout;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;

public class Log {
    
    private static Logger logger = null;
    
    public static void setupLogger(Properties properties) throws IOException {
        if (Boolean.valueOf(properties.getProperty("logger.enable"))) {

            Layout layout = new PatternLayout(
                    "%d{yyyy-MM-dd HH:mm:ss} %5p: %m%n");

            Appender appender = new DailyRollingFileAppender(
                    layout, properties.getProperty("logger.file"), "'.'yyyyMMdd");

            LogManager.resetConfiguration();
            logger = Logger.getRootLogger();
            logger.addAppender(appender);
            logger.setLevel(Level.DEBUG);
        }
    }

    public static Logger getLogger() {
        if (logger == null) {
            logger = Logger.getRootLogger();
            logger.setLevel(Level.OFF);
        }
        return logger;
    }
    
    public static void error(String msg) {
        getLogger().error(msg);
    }

    public static void warning(String msg) {
        getLogger().warn(msg);
    }

    public static void warning(Throwable exception) {
        warning(null, exception);
    }

    public static void warning(String msg, Throwable exception) {
        StringBuilder s = new StringBuilder();
        if (msg != null) {
            s.append(msg);
            s.append(" - ");
        }
        if (exception != null) {
            String exceptionMsg = exception.getMessage();
            if (exceptionMsg != null) {
                s.append(exceptionMsg);
                s.append(" - ");
            }
            s.append(exception.getClass().getName());
            StackTraceElement[] stack = exception.getStackTrace();
            if (stack.length > 0) {
                s.append(" (");
                s.append(stack[0].getFileName());
                s.append(":");
                s.append(stack[0].getLineNumber());
                s.append(")");
            }
        }
        getLogger().warn(s.toString());
    }

    public static void info(String msg) {
        getLogger().info(msg);
    }

    public static void debug(String msg) {
        getLogger().debug(msg);
    }

}