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<?php
/**
 * PHP Validation Rule
 *
 * @package     Joomla.Plugin
 * @subpackage  Fabrik.validationrule.php
 * @copyright   Copyright (C) 2005-2020  Media A-Team, Inc. - All rights
reserved.
 * @license     GNU/GPL http://www.gnu.org/copyleft/gpl.html
 */

// No direct access
defined('_JEXEC') or die('Restricted access');

use Fabrik\Helpers\Php;
use Joomla\CMS\Plugin\PluginHelper;
use Joomla\Registry\Registry;

// Require the abstract plugin class
require_once COM_FABRIK_FRONTEND . '/models/validation_rule.php';

/**
 * PHP Validation Rule
 *
 * @package     Joomla.Plugin
 * @subpackage  Fabrik.validationrule.php
 * @since       3.0
 */
class PlgFabrik_ValidationrulePhp extends PlgFabrik_Validationrule {
	/**
	 * Plugin name
	 *
	 * @var string
	 */
	protected $pluginName = 'php';

	/**
	 * Validate the elements data against the rule
	 *
	 * @param   string  $data           To check
	 * @param   int     $repeatCounter  Repeat group counter
	 *
	 * @return  bool  true if validation passes, false if fails
	 */
	public function validate($data, $repeatCounter = 0) {
		// For multi-select elements
		if (is_array($data)) {
			$data = implode('', $data);
		}

		$params = $this->getParams();
		$doMatch = $params->get('php-match');

		if ($doMatch) {
			return $this->_eval($data, $repeatCounter);
		}

		return true;
	}

	/**
	 * Checks if the validation should replace the submitted element data
	 * if so then the replaced data is returned otherwise original data
returned
	 *
	 * @param   string  $data           Original data
	 * @param   int     $repeatCounter  Repeat group counter
	 *
	 * @return  string	original or replaced data
	 */
	public function replace($data, $repeatCounter = 0) {
		$params = $this->getParams();
		$doMatch = $params->get('php-match');

		if (!$doMatch) {
			return $this->_eval($data, $repeatCounter);
		}

		return $data;
	}

	/**
	 * Run eval
	 *
	 * @param   string  $data  Original data
	 * @param   int     $repeatCounter  Repeat group counter
	 *
	 * @return  string	Evaluated PHP function
	 */

	private function _eval($data, $repeatCounter = 0) {
		$params = $this->getParams();
		$elementModel = $this->elementModel;
		$formModel = $elementModel->getFormModel();
		$formData = $formModel->formData;
		$w = new FabrikWorker;
		$phpCode = $params->get('php-code');
		$phpCode = $w->parseMessageForPlaceHolder($phpCode, $formData, true,
true);
		/**
		 * $$$ hugh - added trigger_error(""), which will
"clear" any existing errors,
		 * otherwise logEval will pick up and report notices and warnings
generated
		 * by the rest of our code, which can be VERY confusing.  Note that this
required a tweak
		 * to logEval, as error_get_last won't be null after doing this, but
$error['message'] will
		 * be empty.
		 * $$$ hugh - moved the $trigger_error() into a helper func
		 */
		FabrikWorker::clearEval();
		$return = Php::Eval(['code' => $phpCode, 'vars'
=> ['thisValidation' => $this, 'data' =>
$data, 'formData' =>
$formData,'formModel'=>$formModel,'repeatCounter'=>$repeatCounter,'elementModel'=>$elementModel]]);
		FabrikWorker::logEval($return, 'Caught exception on php validation
of ' . $elementModel->getFullName(true, false) . ': %s');

		return $return;
	}

	/**
	 * Get the base icon image as defined by the J Plugin options
	 *
	 * @since   3.1b2
	 *
	 * @return  string
	 */
	public function iconImage() {
		$plugin = PluginHelper::getPlugin('fabrik_validationrule',
$this->pluginName);
		$globalParams = new Registry($plugin->params);
		$default = $globalParams->get('icon', 'star');
		$params = $this->getParams();

		return $params->get('icon', $default);
	}
}