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<?php
/**
 * Copyright (C) 2020 Xibo Signage Ltd
 *
 * Xibo - Digital Signage - http://www.xibo.org.uk
 *
 * This file is part of Xibo.
 *
 * Xibo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * Xibo is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Xibo.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace Xibo\Factory;

use Xibo\Entity\Help;
use Xibo\Helper\SanitizerService;
use Xibo\Service\LogServiceInterface;
use Xibo\Storage\StorageServiceInterface;
use Xibo\Support\Exception\NotFoundException;

class HelpFactory extends BaseFactory
{
    /**
     * Construct a factory
     * @param StorageServiceInterface $store
     * @param LogServiceInterface $log
     * @param SanitizerService $sanitizerService
     */
    public function __construct($store, $log, $sanitizerService)
    {
        $this->setCommonDependencies($store, $log, $sanitizerService);
    }

/**
     * @return Help
     */
    public function createEmpty()
    {
        return new Help(
            $this->getStore(),
            $this->getLog()
        );
    }

/**
     * @param int $helpId
     * @return Help
     * @throws NotFoundException
     */
    public function getById($helpId)
    {
        $help = $this->query(null, ['helpId' => $helpId]);

if (count($help) <= 0)
            throw new NotFoundException();

return $help[0];
    }

/**
     * @param array $sortOrder
     * @param array $filterBy
     * @return array[Transition]
     */
    public function query($sortOrder = null, $filterBy = [])
    {
        $entries = [];
        $params = [];
        $sanitizedFilter = $this->getSanitizer($filterBy);

$select = 'SELECT `helpId`, `topic`, `category`, `link` ';

$body = '
          FROM `help`
         WHERE 1 = 1
        ';

if ($sanitizedFilter->getInt('helpId') !== null) {
            $body .= ' AND help.helpId = :helpId ';
            $params['helpId'] = $sanitizedFilter->getInt('helpId');
        }

// Sorting?
        $order = '';
        if (is_array($sortOrder))
            $order .= ' ORDER BY ' . implode(',', $sortOrder);

$limit = '';
        if ($filterBy !== null && $sanitizedFilter->getInt('start') !== null && $sanitizedFilter->getInt('length') !== null) {
            $limit .= ' LIMIT ' . intval($sanitizedFilter->getInt('start')) . ', ' . $sanitizedFilter->getInt('length',['default' => 10]);
        }

$sql = $select . $body . $order . $limit;

foreach ($this->getStore()->select($sql, $params) as $row) {
            $entries[] = $this->createEmpty()->hydrate($row);
        }

// Paging
        if ($limit != '' && count($entries) > 0) {
            $results = $this->getStore()->select('SELECT COUNT(*) AS total ' . $body, $params);
            $this->_countLast = intval($results[0]['total']);
        }

return $entries;
    }
}