<?php
/*=====================================================================*\
|| ################################################################### ||
|| # BugStrike [#]version[#]
|| # --------------------------------------------------------------- # ||
|| # Copyright Š2002-[#]year[#] by Iris Studios, Inc. All Rights Reserved. # ||
|| # This file may not be reproduced in any way without permission.  # ||
|| # --------------------------------------------------------------- # ||
|| # User License Agreement at http://www.iris-studios.com/license/  # ||
|| ################################################################### ||
\*=====================================================================*/

class History
{
	var $bugid = 0;
	var $allowempty = false;
	
	// -------------------------------------------------------------------
	// -- Create a log entry
	// -------------------------------------------------------------------	
	function log($diffdata = null)
	{
		global $bugsys;
		
		$this->bugid = intval($this->bugid);
		
		if ($diffdata == -1)
		{
			return;
		}
		
		if (!$diffdata)
		{
			$bugsys->db->query("
				INSERT INTO " . TABLE_PREFIX . "history
					(bugid, dateline, userid)
				VALUES
					(" . $this->bugid . ", " . LOG_TIME . ", " . $bugsys->userinfo['userid'] . "
				)"
			);
		}
		else
		{
			$bugsys->db->query("
				INSERT INTO " . TABLE_PREFIX . "history
					(bugid, dateline, userid, field, original, changed)
				VALUES
					(" . $this->bugid . ", " . LOG_TIME . ", " . $bugsys->userinfo['userid'] . ", 
					'" . $bugsys->escape($diffdata['field']) . "', '" . $bugsys->escape($diffdata['initial']) . "',
					'" . $bugsys->escape($diffdata['final']) . "'
				)"
			);
		}
	}
	
	// -------------------------------------------------------------------
	// -- Do a diff
	// -------------------------------------------------------------------
	function diff($field, $initial, $final)
	{
		if (empty($initial) AND empty($final))
		{
			if (!$this->allowempty)
			{
				return -1;
			}
		}
		
		if (!$this->allowempty)
		{
			if ($initial === $final)
			{
				return -1;
			}
		}
		
		return array('field' => $field, 'initial' => $initial, 'final' => $final);
	}
}

/*=====================================================================*\
|| ###################################################################
|| # $HeadURL$
|| # $Id$
|| ###################################################################
\*=====================================================================*/
?>