/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package chapters.appenders.mail;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.core.util.StatusPrinter;

/**
 * This application generates log messages in numbers specified by the
 * user. 
 * */
public class EMail {
    static public void main(String[] args) throws Exception {
        if (args.length != 2) {
            usage("Wrong number of arguments.");
        }

        int runLength = Integer.parseInt(args[0]);
        String configFile = args[1];

        LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
        JoranConfigurator configurator = new JoranConfigurator();
        lc.reset();
        configurator.setContext(lc);
        configurator.doConfigure(configFile);

        Logger logger = LoggerFactory.getLogger(EMail.class);

        for (int i = 1; i <= runLength; i++) {
            if ((i % 10) < 9) {
                logger.debug("This is a debug message. Message number: " + i);
            } else {
                logger.warn("This is a warning message. Message number: " + i);
            }
        }

        logger.error("At last an error.", new Exception("Just testing"));

        StatusPrinter.printInCaseOfErrorsOrWarnings(lc);
    }

    static void usage(String msg) {
        System.err.println(msg);
        System.err.println("Usage: java " + EMail.class.getName() + " runLength configFile\n" + "   runLength (integer) the number of logs to generate\n"
                        + "   configFile a logback configuration file in XML format." + " XML files must have a '.xml' extension.");
        System.exit(1);
    }
}
