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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Search; |
| 4 | |
| 5 | use File; |
| 6 | use MediaWiki\HookContainer\HookContainer; |
| 7 | use MediaWiki\HookContainer\HookRunner; |
| 8 | use MediaWiki\Page\PageIdentity; |
| 9 | use MediaWiki\Search\Entity\SearchResultThumbnail; |
| 10 | use RepoGroup; |
| 11 | |
| 12 | /** |
| 13 | * Find thumbnails for search results |
| 14 | * |
| 15 | * @since 1.40 |
| 16 | */ |
| 17 | class SearchResultThumbnailProvider { |
| 18 | |
| 19 | public const THUMBNAIL_SIZE = 60; |
| 20 | |
| 21 | /** @var RepoGroup */ |
| 22 | private $repoGroup; |
| 23 | |
| 24 | /** @var HookRunner */ |
| 25 | private $hookRunner; |
| 26 | |
| 27 | /** |
| 28 | * @param RepoGroup $repoGroup |
| 29 | * @param HookContainer $hookContainer |
| 30 | */ |
| 31 | public function __construct( RepoGroup $repoGroup, HookContainer $hookContainer ) { |
| 32 | $this->repoGroup = $repoGroup; |
| 33 | $this->hookRunner = new HookRunner( $hookContainer ); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Returns a list of fileNames for a given list of PageIdentity objects (within NS_FILE) |
| 38 | * |
| 39 | * @param PageIdentity[] $identitiesByPageId key-value array of where key |
| 40 | * is pageId, value is PageIdentity |
| 41 | * @return array |
| 42 | */ |
| 43 | private function getFileNamesByPageId( array $identitiesByPageId ): array { |
| 44 | $fileIdentitiesByPageId = array_filter( |
| 45 | $identitiesByPageId, |
| 46 | static function ( PageIdentity $pageIdentity ) { |
| 47 | return $pageIdentity->getNamespace() === NS_FILE; |
| 48 | } |
| 49 | ); |
| 50 | |
| 51 | return array_map( |
| 52 | static function ( PageIdentity $pageIdentity ) { |
| 53 | return $pageIdentity->getDBkey(); |
| 54 | }, |
| 55 | $fileIdentitiesByPageId |
| 56 | ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Returns a SearchResultThumbnail instance for a given File/size combination. |
| 61 | * |
| 62 | * @param File $file |
| 63 | * @param int|null $size |
| 64 | * @return SearchResultThumbnail|null |
| 65 | */ |
| 66 | public function buildSearchResultThumbnailFromFile( File $file, int $size = null ): ?SearchResultThumbnail { |
| 67 | $size ??= self::THUMBNAIL_SIZE; |
| 68 | |
| 69 | $thumb = $file->transform( [ 'width' => $size ] ); |
| 70 | if ( !$thumb || $thumb->isError() ) { |
| 71 | return null; |
| 72 | } |
| 73 | |
| 74 | return new SearchResultThumbnail( |
| 75 | $thumb->getFile()->getMimeType(), |
| 76 | null, |
| 77 | $thumb->getWidth(), |
| 78 | $thumb->getHeight(), |
| 79 | null, |
| 80 | wfExpandUrl( $thumb->getUrl(), PROTO_RELATIVE ), |
| 81 | $file->getName() |
| 82 | ); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * @param PageIdentity[] $pageIdentities array that contains $pageId => PageIdentity. |
| 87 | * @param int|null $size size of thumbnail height and width in points |
| 88 | * @return SearchResultThumbnail[] array of $pageId => SearchResultThumbnail |
| 89 | */ |
| 90 | public function getThumbnails( array $pageIdentities, ?int $size = 60 ): array { |
| 91 | // add filenames for NS_FILE pages by default |
| 92 | $fileNamesByPageId = $this->getFileNamesByPageId( $pageIdentities ); |
| 93 | $results = []; |
| 94 | foreach ( $fileNamesByPageId as $pageId => $fileName ) { |
| 95 | $file = $this->repoGroup->findFile( $fileName ); |
| 96 | if ( !$file ) { |
| 97 | continue; |
| 98 | } |
| 99 | $thumbnail = $this->buildSearchResultThumbnailFromFile( $file, $size ); |
| 100 | if ( $thumbnail ) { |
| 101 | $results[$pageId] = $thumbnail; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | // allow extensions to inject additional thumbnails |
| 106 | $this->hookRunner->onSearchResultProvideThumbnail( $pageIdentities, $results, $size ); |
| 107 | |
| 108 | return $results; |
| 109 | } |
| 110 | } |