<?php

include_once('PEAR.php');

class iowacore2_error
{
	private $message;
	private $code;
	private $line;
	private $file;
	
	public function __construct($code = '', $message = '', $file = '', $line = '')
	{
		$this->code = (int) $code;
		$this->message = $message;
		$this->file = $file;
		$this->line = (int) $line;
	}
	
	// get formatted time
	private function getTime()
	{
		return date('F j, Y, g:i a: ');
	}
	
	// converts error code to string
	private function error2string($value)
	{
		$level_names = array(
			E_ERROR => 'E_ERROR', E_WARNING => 'E_WARNING',
			E_PARSE => 'E_PARSE', E_NOTICE => 'E_NOTICE',
			E_CORE_ERROR => 'E_CORE_ERROR', E_CORE_WARNING => 'E_CORE_WARNING',
			E_COMPILE_ERROR => 'E_COMPILE_ERROR', E_COMPILE_WARNING => 'E_COMPILE_WARNING',
			E_USER_ERROR => 'E_USER_ERROR', E_USER_WARNING => 'E_USER_WARNING',
			E_USER_NOTICE => 'E_USER_NOTICE');
			
		if (defined('E_STRICT'))
			$level_names[E_STRICT] = 'E_STRICT';
		
		$levels = array();
		
		if (($value & E_ALL) == E_ALL)
		{
			$levels[] = 'E_ALL';
			$value &= ~E_ALL;
		}
		
		foreach($level_names as $level=>$name)
			if (($value & $level) == $level) $levels[] = $name;
			
		return implode(' | ', $levels);
	}
	
	// format error message
	public function getError()
	{
		return 'Error in "' . $this->file . '" on line ' . $this->line . ': ' . $this->message;
	}
	
	public function displayError($error = null)
	{
		$error = is_null($error) ? $this->getError() : $error;
		
		if (!preg_match('~(.*)MDB2 Error: connect failed~', $error) && !preg_match('~(.*)mysql_connect\(\)(.*)~', $error))
		{
			echo $error;
		}
	}
	
	// write error to log file
	public function writeToLog($message = null)
	{
		if ((int) $this->code < 1 || $this->code <= ERROR_LOG_LEVEL)
		{
			$log_file = is_writable(IOWACORE2_BASE_PATH_TMP . '/iowacore2.log') ? IOWACORE2_BASE_PATH_TMP . '/iowacore2.log' : 'iowacore2.log';
			
			$message = self::getTime() . (is_null($message) ? $this->getError() . ' (' . $this->error2string($this->code) . ')' : $message) . "\n";
			file_put_contents($log_file, $message, FILE_APPEND);
			
			return true;
		} else {
			return false;
		}
	}
	
	
	
	
	// these functions are for PEAR_Error
	
	public function errorCallback($err)
	{
		$this->displayError($err->getMessage());
		$this->pearLog($err->getMessage());
	}
	
	public function pearLog($error)
	{
		$this->writeToLog('PEAR Error: ' . $error);
	}
}