package com.jotuntech.sketcher.common;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

public class Log {
	/** Log debug messages? */
	private final static boolean debug = true;

	/** Log info messages? */
	private final static boolean info = true;

	/** Log error messages? */
	private final static boolean error = true;

	/** Log warning messages? */
	private final static boolean warn = true;

	/** Date format */
	private final static DateFormat df = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss", Locale.US);

	/**
	 * Logs the specified debug message.
	 *
	 * @param message Message to log.
	 */
	public final static void debug(String message) {
		if(debug) {
			log(df.format(new Date()) + " [DEBUG: " + Thread.currentThread().getName() + "] " + message);
		}
	}

	/**
	 * Logs the specified info message.
	 *
	 * @param message Message to log.
	 */
	public final static void info(String message) {
		if(info) {
			log(df.format(new Date()) + " [INFO: " + Thread.currentThread().getName() + "] " + message);
		}
	}

	/**
	 * Logs the specified error message.
	 *
	 * @param message Message to log.
	 */
	public final static void error(String message) {
		if(error) {
			log(df.format(new Date()) + " [ERROR: " + Thread.currentThread().getName() + "] " + message);
		}
	}

	public final static void error(Throwable t) {
		if(error) {
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			PrintStream ps = new PrintStream(baos);
			t.printStackTrace(ps);
			String message = baos.toString();
			ps.close();
			log(df.format(new Date()) + " [ERROR: " + Thread.currentThread().getName() + "] " + message);
		}
	}

	/**
	 * Logs the specified warn message.
	 *
	 * @param message Message to log.
	 */
	public final static void warn(String message) {
		if(warn) {
			log(df.format(new Date()) + " [WARN: " + Thread.currentThread().getName() + "] " + message);
		}
	}

	private final static void log(String message) {
		System.err.println(message);
	}
}