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1
1<?php
2
3/**
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; under version 2
7 * of the License (non-upgradable).
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
17 *
18 * Copyright (c) 2020 (original work) Open Assessment Technologies SA;
19 */
20
21declare(strict_types=1);
22
23namespace oat\taoMediaManager\model\relation\task;
24
25use common_Exception;
26use core_kernel_classes_Resource;
27use Exception;
28use oat\generis\model\OntologyAwareTrait;
29use oat\oatbox\service\ConfigurableService;
30use oat\tao\model\task\migration\service\ResultUnitProcessorInterface;
31use oat\tao\model\task\migration\ResultUnit;
32use oat\taoMediaManager\model\relation\service\IdDiscoverService;
33use oat\taoMediaManager\model\relation\service\update\ItemRelationUpdateService;
34use oat\taoQtiItem\model\qti\parser\ElementReferencesExtractor;
35use oat\taoQtiItem\model\qti\Service;
36
37class ItemToMediaUnitProcessor extends ConfigurableService implements ResultUnitProcessorInterface
38{
39    use OntologyAwareTrait;
40
41    /**
42     * @throws common_Exception
43     */
44    public function process(ResultUnit $unit): void
45    {
46        /** @var core_kernel_classes_Resource $resource */
47        $resource = $unit->getResult();
48
49        if (!($unit->getResult() instanceof core_kernel_classes_Resource)) {
50            throw new Exception('Unit is not a resource');
51        }
52        $qtiItem = $this->getQtiService()->getDataItemByRdfItem($resource);
53
54        $elementReferences = $this->getElementReferencesExtractor()
55            ->extractAll($qtiItem)
56            ->getAllReferences();
57
58        if (!empty($elementReferences)) {
59            $ids = $this->getIdDiscoverService()->discover($elementReferences);
60
61            $this->getItemRelationUpdateService()
62                ->updateByTargetId($resource->getUri(), $ids);
63        }
64    }
65
66    private function getItemRelationUpdateService(): ItemRelationUpdateService
67    {
68        return $this->getServiceLocator()->get(ItemRelationUpdateService::class);
69    }
70
71    private function getElementReferencesExtractor(): ElementReferencesExtractor
72    {
73        return $this->getServiceLocator()->get(ElementReferencesExtractor::class);
74    }
75
76    private function getQtiService(): Service
77    {
78        return $this->getServiceLocator()->get(Service::class);
79    }
80
81    private function getIdDiscoverService(): IdDiscoverService
82    {
83        return $this->getServiceLocator()->get(IdDiscoverService::class);
84    }
85}