<?php
/**
 * XMPPHP: The PHP XMPP Library
 * Copyright (C) 2008  Nathanael C. Fritz
 * This file is part of SleekXMPP.
 * 
 * XMPPHP 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 2 of the License, or
 * (at your option) any later version.
 * 
 * XMPPHP 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 XMPPHP; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   xmpphp 
 * @package    XMPPHP
 * @author     Nathanael C. Fritz <JID: fritzy@netflint.net>
 * @author     Stephan Wentz <JID: stephan@jabber.wentz.it>
 * @copyright  Copyright (C) 2008  Nathanael C. Fritz
 */

/**
 * XMPPHP Log
 * 
 * @package    XMPPHP
 * @author     Nathanael C. Fritz <JID: fritzy@netflint.net>
 * @author     Stephan Wentz <JID: stephan@jabber.wentz.it>
 * @copyright  Copyright (C) 2008  Nathanael C. Fritz
 * @version    $Id$
 */
class XMPPHP_Log {
    
    const LEVEL_ERROR   = 0;
    const LEVEL_WARNING = 1;
    const LEVEL_INFO    = 2;
    const LEVEL_DEBUG   = 3;
    const LEVEL_VERBOSE = 4;
    
    /**
     * @var array
     */
	protected $data = array();

    /**
     * @var array
     */
	protected $names = array('ERROR', 'WARNING', 'INFO', 'DEBUG', 'VERBOSE');

    /**
     * @var integer
     */
	protected $runlevel;

    /**
     * @var boolean
     */
	protected $printout;

	/**
	 * Constructor
	 *
	 * @param boolean $printout
	 * @param string  $runlevel
	 */
	public function __construct($printout = false, $runlevel = self::LEVEL_INFO) {
		$this->runlevel = (int)$runlevel;
		$this->printout = (boolean)$printout;
	}

    /**
     * Add a message to the log data array
     * If printout in this instance is set to true, directly output the message
	 *
	 * @param string  $msg
	 * @param integer $runlevel
     */
	public function log($msg, $runlevel = self::LEVEL_INFO) {
        $time = time();
		$this->data[] = array($this->runlevel, $msg, $time);
		if($this->printout and $runlevel <= $this->runlevel) {
            $this->writeLine($msg, $runlevel, $time);
        }
	}

    /**
     * Output the complete log.
     * Log will be cleared if $clear = true
	 *
	 * @param boolean $clear
	 * @param integer $runlevel
     */
	public function printout($clear = true, $runlevel = null) {
		if($runlevel === null) {
            $runlevel = $this->runlevel;
        }
		foreach($this->data as $data) {
			if($runlevel <= $data[0]) {
                $this->writeLine($data[1], $runlevel, $data[2]);
            }
		}
		if($clear) {
            $this->data = array();
        }
	}
	
	protected function writeLine($msg, $runlevel, $time) {
	    //echo date('Y-m-d H:i:s', $time)." [".$this->names[$runlevel]."]: ".$msg."\n";
	    echo $time." [".$this->names[$runlevel]."]: ".$msg."\n";
	}
}