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2.15
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\service;
24
25use oat\oatbox\service\ConfigurableService;
26use oat\tao\model\media\TaoMediaResolver;
27use oat\taoItems\model\media\ItemMediaResolver;
28use oat\taoMediaManager\model\MediaSource;
29use tao_helpers_Uri;
30
31class IdDiscoverService extends ConfigurableService
32{
33    /** @var TaoMediaResolver */
34    private $mediaResolver;
35
36    public function withMediaResolver(TaoMediaResolver $mediaResolver): self
37    {
38        $this->mediaResolver = $mediaResolver;
39
40        return $this;
41    }
42
43    public function discover(array $fileReferences): array
44    {
45        $ids = [];
46
47        foreach ($fileReferences as $reference) {
48            $mediaAsset = $this->getMediaResolver()->resolve($reference);
49
50            if ($mediaAsset->getMediaSource() instanceof MediaSource) {
51                $ids[] = tao_helpers_Uri::decode($mediaAsset->getMediaIdentifier());
52            }
53        }
54
55        return $ids;
56    }
57
58    private function getMediaResolver(): TaoMediaResolver
59    {
60        if (!$this->mediaResolver) {
61            $this->mediaResolver = new ItemMediaResolver('', null);
62        }
63
64        return $this->mediaResolver;
65    }
66}