<?php

# $Id$
# http://www.mapbender.org/index.php/class_mb_exception.php
# Copyright (C) 2002 CCGIS 
#
# 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, 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.

/*
* class exception
*
*/
include(dirname(__FILE__)."/../../conf/mapbender.conf");

class mb_log {
	var $log_levels = LOG_LEVEL_LIST;
	var $mb_log_level = LOG_LEVEL;	
	var $dir = "../../log/";
	var $filename_prefix = "mb_error_";
	var $result = false;
	var $message = "";

	function indexOf($level, $levelArray) {
		$index = false;
		for ($i=0; $i < count($levelArray); $i++) {
			if ($levelArray[$i] == $level) {
				$index = $i;
			}
		}
		return $index;
	}

	function isValidLevel($level) {
		$log_level_array = explode(",", $this->log_levels);
		$isValid = in_array($level, $log_level_array);
		$isAppropriate = ($this->indexOf($level, $log_level_array) <= $this->indexOf($this->mb_log_level, $log_level_array));
		return $isValid && $isAppropriate;
	}
	
	function mb_log($n, $level){
		if (!isset($this->mb_log_level)) {
			$n = "class_mb_exception: please set LOG_LEVEL in mapbender.conf" . $n;
		}
		if ($this->isValidLevel($level)) {
			if(is_dir($this->dir)){
				$logfile = $this->dir . $this->filename_prefix . date("Y_m_d") . ".log";
				if($h = fopen($logfile,"a")){
					$content = date("Y.m.d, H:i:s") . "," . $n .chr(13).chr(10);
					if(!fwrite($h,$content)){
						$this->result = false;
						$this->message = "Unable to write " . $logfile;
						return false;
					}
					fclose($h);
					$this->result = true;
					$this->message = "Successful.";
					return true;
				}
				else {
					$this->result = false;
					$this->message = "Unable to open or generate " . $logfile;
					return false;
				}
			}
			else {
				$this->result = false;
				$this->message = "Directory " . $this->dir . " is not valid.";
				return false;
			}
		}
		else {
			$this->result = false;
			$this->message = "Log level '" . $level . "' is not valid or logging is disabled in mapbender.conf.";
			return false; 
		}
	}
}

class mb_notice extends mb_log {
	var $level = "notice";
	
	function mb_notice($message) {
		return $this->mb_log("Notice: " . $message, $this->level);
	}
}

class mb_warning extends mb_log {
	var $level = "warning";
	
	function mb_warning($message) {
		return $this->mb_log("Warning: " . $message, $this->level);
	}
}

class mb_exception extends mb_log {
	var $level = "error";
	
	function mb_exception($message) {
		return $this->mb_log("ERROR: " . $message, $this->level);
	}
}
?>