<?php
/**
 * patForms Rule VFSisDir
 *
 * $Id$
 *
 * @package Wombat
 * @subpackage patForms
 * @author gERD Schaufelberger <gerd@php-tools.net>
 */

WBClass::load('WBPAT_Forms_Rule');

/**
 * patForms Rule VFSIsDir
 *
 * Check whether value is a proper VFS folder 
 *
 * @version 0.2.0
 * @package Wombat
 * @subpackage patForms
 */
class patForms_Rule_VFSIsDir extends WBPAT_Forms_Rule
{
    /**
     * config values
     *  - user
     *
     * @todo implement "paren" and "descendent"
     * @var array
     */
    protected $config   =   array(
                            'user'  =>  null,
                            );
    
    /**
     * Initialize validation codes using gettext
     *
     * @access protected
     * @return bool $success Always returns true.
     * @see $attributeDefaults
     */
    function loadValidatiorErrorCodes()
    {
        $this->validatorErrorCodes  = array(
            1   =>   patI18n::dgettext('wombat', 'This is not a folder'),
        );
        return true;
    }

    /**
     * find user
     *
     * Try to find user by nickname or email address
     *
     * @param patForms|patForms_Element form element object
     * @param string $type validateion type
     */
    public function applyRule(&$element, $type = PATFORMS_RULE_AFTER_VALIDATION)
    {
        if (empty($this->config['user'])) {
            WBClass::load('WBException_Config');
            throw new WBException_Config('Config value "user" must be a valid user id', 1, __CLASS__);
        }
        
        $value  =   $element->getValue();
        if (empty($value)) {
            return true;
        }
        
        if (!is_array($value)) {
            $value  =   array($value);
        }

        // load explorer
        $params =   array(
                            'user'  =>  $this->config['user']
                        );
        $expl   =   WBClass::create('WBVFS_Explorer', $params);
        /** @var $expl WBVFS_Explorer */

        foreach ($value as $v) {
            // pseudo id for root folder
            if ($v == 'NULL') {
                continue;
            }                
            try {
                $node   =   $expl->getDir($v);
            } catch (WBException_Datasource $e) {
                if ($e->getCode() != 'WBDatasource_Tree.1') {
                    throw $e;
                }
                $node   =   null;            
            }
            
            if (!is_array($node)) {
                $this->addValidationError(1);
                return false;                
            }
        }
        
        return true;
	}
}
?>