<?php

/*

 * Messages

 *

 * Copyright(c) 2010, Thomas Shone

 * Licensed under the Creative Commons Attribution 3.0 Unported License.

 * http://www.shone.co.za

 *

 * User warning messages

 * To be used in a later version of the system

 */

define('ERROR',         'Error');
define('ERROR_INLINE',  'ErrorInline');
define('WARNING',       'Warning');
define('NOTICE',        'Notice');

class Messages
{
	protected static $aOldMessages;
	protected static $aNewMessages;
	
	public static function HasErrors()
	{
		return !empty(self::$aNewMessages);
	}

	public static function AddError($sError)
	{
		self::$aNewMessages[ERROR][] = $sError;
	}
	
	public static function AddInlineError($sKey, $sError)
	{
		self::$aNewMessages[ERROR_INLINE][$sKey][] = $sError;
	}
	
	public static function AddWarning($sError)
	{
		self::$aNewMessages[WARNING][] = $sError;
	}
	
	public static function AddNotice($sError)
	{
		self::$aNewMessages[NOTICE][] = $sError;
	}
	
	public static function GetInlineErrors($sKey)
	{
		return (
			!empty(self::$aOldMessages[ERROR_INLINE][$sKey]) ?
				self::$aOldMessages[ERROR_INLINE][$sKey] :
				''
		);
	}
	
	public static function GetMessages()
	{
		// If we don't have any messages, skip the intersect
		if (empty(self::$aOldMessages))
		{
			return array();
		}
		
		// Grab all the messages set
		$aTypes = array(
			ERROR	=> true,
			WARNING	=> true,
			NOTICE	=> true
		);
		return array_intersect_key(self::$aOldMessages, $aTypes);
	}
	
	public static function LoadFromSession()
	{
		$aTypes = array(ERROR, WARNING, NOTICE, ERROR_INLINE);
		foreach ($aTypes as $sType)
		{
			// Grab messages from session
			$aMessages = Session::Get('Messages.' . $sType);
			if (!empty($aMessages))
			{
				self::$aOldMessages[$sType] = $aMessages;
				// Clear out session entry
				Session::Clear('Messages.' . $sType);
			}
		}
	}
	
	public static function StoreInSession()
	{
		// Stash messages in the session
		if (!empty(self::$aNewMessages))
		{
			foreach (self::$aNewMessages as $sType => $aMessages)
			{
				Session::Set('Messages.' . $sType, $aMessages);
			}
		}
	}
}

?>