<?php
/*
+---------------------------------------------------------------------------+
| OpenX v2.8                                                                |
| ==========                                                                |
|                                                                           |
| Copyright (c) 2003-2009 OpenX Limited                                     |
| For contact details, see: http://www.openx.org/                           |
|                                                                           |
| This program 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.                                       |
|                                                                           |
| This program 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 this program; if not, write to the Free Software               |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA |
+---------------------------------------------------------------------------+
$Id$
*/

/**
 * OpenXUpgrade Class
 *
 * @author     Monique Szpak <monique.szpak@openx.org>
 */
class OA_UpgradeLogger
{
    var $aErrors       = array();
    var $aMessages     = array();
    var $warningExists = false;
    var $errorExists   = false;
    var $logFile;

    /**
     * php5 class constructor
     *
     * simpletest throws a BadGroupTest error
     * Redefining already defined constructor for class Openads_DB_Upgrade
     * when both constructors are present
     *
     */
//    function __construct()
//    {
//    }

    /**
     * php4 class constructor
     *
     * @return boolean
     */
    function OA_UpgradeLogger()
    {
        //this->__construct();
        $this->logFile = MAX_PATH."/var/install.log";
    }

    function setLogFile($logfile)
    {
        $this->logFile = MAX_PATH."/var/{$logfile}";
        if (file_exists($this->logFile))
        {
            unlink($this->logFile);
        }
        $this->_logWrite(date('Y-m-d h:i:s'));
    }

    /**
     * check for a Pear error
     * log the error
     * returns true if pear error, false if not
     *
     * @param mixed $result
     * @param string $message
     * @return boolean
     */
    function isPearError($result, $message='omg it all went PEAR shaped!')
    {
        if (PEAR::isError($result))
        {
            $this->logError($message.' '. $result->getUserInfo());
            return true;
        }
        return false;
    }

    function logClear()
    {
        $this->aMessages = array();
        $this->aErrors = array();
        $this->errorExists = false;
        $this->warningExists = false;
    }

    /**
     * write a message to the logfile
     *
     * @param string $message
     */
    function log($message)
    {
        $this->aMessages[] = $message;
        $this->_logWrite($message);
    }

    function logOnly($message)
    {
        $this->_logWrite($message);
    }

    /**
     * write a warning to the log file
     *
     * @param string $message
     */
    function logWarning($message)
    {
        $this->aMessages[] = "#> {$message}";
        $this->_logWrite("#> {$message}");
        $this->warningExists = true;
    }

    /**
     * write an error to the log file
     *
     * @param string $message
     */
    function logError($message)
    {
        $this->log("#! {$message}");
        $this->errorExists = true;
    }

    /**
     * Writes an error message to the log file if $message is not empty.
     * 
     * @param string $message
     */
    function logErrorUnlessEmpty($message)
    {
        if (!empty($message)) {
            $this->logError($message);
        }
    }
    
    function _logWrite($message)
    {
        if (empty($this->logFile))
        {
            $this->logBuffer[] = $message;
        } else
        {
            $log = fopen($this->logFile, 'a');
            if (count($this->logBuffer))
            {
                $message = join("\n", $this->logBuffer);
                $this->logBuffer = array();
            }
            fwrite($log, "{$message}\n");
            fclose($log);
        }
    }

    function getLogfilesList()
    {
        $aFiles = array();
        $dh = opendir(MAX_PATH.'/var');
        if ($dh) {
            while (false !== ($file = readdir($dh)))
            {
                $aMatches = array();
                if (preg_match('/openads_upgrade_[\w\W\d]+\.log/', $file, $aMatches))
                {
                    $aFiles[] = basename($file);
                }
            }
        }
        closedir($dh);
        return $aFiles;
    }

    function deleteLogFile()
    {
        if (file_exists($this->logFile))
        {
            unlink($this->logFile);
        }
    }

}

?>