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2 |
1 | <?php |
2 | |
3 | namespace MediaWiki\Extension\FeaturedFeeds; |
4 | |
5 | use MediaWiki\SpecialPage\UnlistedSpecialPage; |
6 | use MediaWiki\Utils\MWTimestamp; |
7 | use WANObjectCache; |
8 | |
9 | class SpecialFeedItem extends UnlistedSpecialPage { |
10 | |
11 | /** @var WANObjectCache */ |
12 | private $wanObjectCache; |
13 | |
14 | /** |
15 | * @param WANObjectCache $wanObjectCache |
16 | */ |
17 | public function __construct( |
18 | WANObjectCache $wanObjectCache |
19 | ) { |
20 | parent::__construct( 'FeedItem' ); |
21 | $this->wanObjectCache = $wanObjectCache; |
22 | } |
23 | |
24 | public function execute( $par = '' ) { |
25 | $this->setHeaders(); |
26 | $out = $this->getOutput(); |
27 | $parts = explode( '/', $par ); |
28 | if ( count( $parts ) != 3 ) { |
29 | $out->showErrorPage( 'error', 'ffeed-no-feed' ); |
30 | return; |
31 | } |
32 | [ $feedName, $date, $langCode ] = $parts; |
33 | $feeds = FeaturedFeeds::getFeeds( $langCode ); |
34 | if ( !isset( $feeds[$feedName] ) ) { |
35 | $out->showErrorPage( 'error', 'ffeed-feed-not-found', [ $feedName ] ); |
36 | return; |
37 | } |
38 | $feed = $feeds[$feedName]; |
39 | $timestamp = $this->parseTimestamp( $date ); |
40 | if ( !$timestamp ) { |
41 | $out->showErrorPage( 'error', 'ffeed-invalid-timestamp' ); |
42 | return; |
43 | } |
44 | $date = FeaturedFeeds::startOfDay( $timestamp ); |
45 | // First, search in the general cache |
46 | foreach ( $feed->getFeedItems() as $item ) { |
47 | if ( $item->getRawDate() == $date ) { |
48 | $this->displayItem( $item ); |
49 | return; |
50 | } |
51 | } |
52 | |
53 | $cache = $this->wanObjectCache; |
54 | |
55 | $item = $cache->getWithSetCallback( |
56 | $cache->makeKey( |
57 | 'featured-feed', |
58 | $feedName, |
59 | $date, |
60 | $feed->getLanguage()->getCode() |
61 | ), |
62 | $cache::TTL_DAY, |
63 | static function () use ( $feed, $date ) { |
64 | $item = $feed->getFeedItem( $date ); |
65 | |
66 | if ( $item ) { |
67 | return $item->toArray(); |
68 | } |
69 | |
70 | return false; |
71 | }, |
72 | [ 'version' => FeaturedFeedChannel::VERSION ] |
73 | ); |
74 | |
75 | if ( $item ) { |
76 | $this->displayItem( FeaturedFeedItem::fromArray( $item ) ); |
77 | } else { |
78 | $out->showErrorPage( 'error', 'ffeed-entry-not-found', |
79 | [ $this->getLanguage()->date( wfTimestamp( TS_UNIX, $date ), false, false ) ] |
80 | ); |
81 | } |
82 | } |
83 | |
84 | private function parseTimestamp( $date ) { |
85 | if ( strlen( $date ) !== 14 ) { |
86 | return false; |
87 | } |
88 | return MWTimestamp::convert( TS_UNIX, $date ); |
89 | } |
90 | |
91 | private function displayItem( FeaturedFeedItem $item ) { |
92 | $out = $this->getOutput(); |
93 | $out->setPageTitle( $item->getRawTitle() ); |
94 | $out->addHTML( $item->getRawText() ); |
95 | } |
96 | } |