summaryrefslogtreecommitdiffstats
path: root/lib/Fetcher/YoutubeFetcher.php
blob: a47b8fdb869b17bda65adbeeecd61a0f67c4cd7c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
<?php
/**
 * Nextcloud - News
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author    Bernhard Posselt <dev@bernhard-posselt.com>
 * @copyright Bernhard Posselt 2012, 2014
 */

namespace OCA\News\Fetcher;

class YoutubeFetcher implements IFeedFetcher
{

    private $feedFetcher;

    public function __construct(FeedFetcher $feedFetcher)
    {
        $this->feedFetcher = $feedFetcher;
    }


    private function buildUrl($url)
    {
        $baseRegex = '%(?:https?://|//)?(?:www.)?youtube.com';
        $playRegex = $baseRegex . '.*?list=([^&]*)%';

        if (preg_match($playRegex, $url, $matches)) {
            $id = $matches[1];
            return 'http://gdata.youtube.com/feeds/api/playlists/' . $id;
        } else {
            return $url;
        }
    }


    /**
     * This fetcher handles all the remaining urls therefore always returns true
     */
    public function canHandle($url)
    {
        return $this->buildUrl($url) !== $url;
    }


    /**
     * Fetch a feed from remote
     *
     * @param  string  $url               remote url of the feed
     * @param  boolean $getFavicon        if the favicon should also be fetched, defaults to true
     * @param  string  $lastModified      a last modified value from an http header defaults to false.
     *                                    If lastModified matches the http header from the feed no results are fetched
     * @param  string  $etag              an etag from an http header.
     *                                    If lastModified matches the http header from the feed no results are fetched
     * @param  bool    $fullTextEnabled   if true tells the fetcher to enhance the articles by fetching more content
     * @param  string  $basicAuthUser     if given, basic auth is set for this feed
     * @param  string  $basicAuthPassword if given, basic auth is set for this feed. Ignored if user is empty
     *
     * @throws FetcherException if it fails
     * @return array an array containing the new feed and its items, first
     * element being the Feed and second element being an array of Items
     */
    public function fetch(
        $url,
        $getFavicon = true,
        $lastModified = null,
        $etag = null,
        $fullTextEnabled = false,
        $basicAuthUser = null,
        $basicAuthPassword = null
    ) {
        $transformedUrl = $this->buildUrl($url);

        $result = $this->feedFetcher->fetch(
            $transformedUrl,
            $getFavicon,
            $lastModified,
            $etag,
            $fullTextEnabled,
            $basicAuthUser,
            $basicAuthPassword
        );

        // reset feed url so we know the correct added url for the feed
        $result[0]->setUrl($url);

        return $result;
    }
}