<?php
/* *********************************************************************
 * This Original Work is copyright of 51 Degrees Mobile Experts Limited.
 * Copyright 2019 51 Degrees Mobile Experts Limited, 5 Charlotte Close,
 * Caversham, Reading, Berkshire, United Kingdom RG4 7BY.
 *
 * This Original Work is licensed under the European Union Public Licence (EUPL)
 * v.1.2 and is subject to its terms as set out below.
 *
 * If a copy of the EUPL was not distributed with this file, You can obtain
 * one at https://opensource.org/licenses/EUPL-1.2.
 *
 * The 'Compatible Licences' set out in the Appendix to the EUPL (as may be
 * amended by the European Commission) shall be deemed incompatible for
 * the purposes of the Work and the provisions of the compatibility
 * clause in Article 5 of the EUPL shall not apply.
 *
 * If using the Work as, or as part of, a network application, by
 * including the attribution notice(s) required under Article 5 of the EUPL
 * in the end user terms of the application under an appropriate heading,
 * such notice(s) shall fulfill the requirements of that article.
 * ********************************************************************* */



namespace fiftyone\pipeline\core;

use fiftyone\pipeline\core\EvidenceKeyFilter;

/**
  * An instance of EvidenceKeyFilter that uses a simple array of keys
  * Evidence not using these keys is filtered out
*/
class BasicListEvidenceKeyFilter extends EvidenceKeyFilter
{
    private $list;

    /**
    * @param mixed[] an array of keys to keep
    */
    public function __construct($list)
    {
        $this->list = $list;
    }

    /**
    * @param string key to check in the filter
    * @return boolean is this key in the filter's keys list?
    */
    public function filterEvidenceKey($key)
    {
        $keep = false;

        foreach ($this->list as $evidenceKey) {
            if (strtolower($key) === strtolower($evidenceKey)) {
                $keep = true;
            }
        }

        return $keep;
    }
}
