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| 1 | <?php |
| 2 | |
| 3 | declare( strict_types=1 ); |
| 4 | |
| 5 | namespace MediaWiki\Extension\CampaignEvents\MWEntity; |
| 6 | |
| 7 | use MediaWiki\Revision\RevisionRecord; |
| 8 | use MediaWiki\Revision\RevisionStoreFactory; |
| 9 | use UnexpectedValueException; |
| 10 | |
| 11 | /** |
| 12 | * This service can be used to find the global user who created a given page. |
| 13 | */ |
| 14 | class PageAuthorLookup { |
| 15 | public const SERVICE_NAME = 'CampaignEventsPageAuthorLookup'; |
| 16 | |
| 17 | private RevisionStoreFactory $revisionStoreFactory; |
| 18 | private CampaignsCentralUserLookup $centralUserLookup; |
| 19 | |
| 20 | /** |
| 21 | * @param RevisionStoreFactory $revisionStoreFactory |
| 22 | * @param CampaignsCentralUserLookup $centralUserLookup |
| 23 | */ |
| 24 | public function __construct( |
| 25 | RevisionStoreFactory $revisionStoreFactory, |
| 26 | CampaignsCentralUserLookup $centralUserLookup |
| 27 | ) { |
| 28 | $this->revisionStoreFactory = $revisionStoreFactory; |
| 29 | $this->centralUserLookup = $centralUserLookup; |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @param ICampaignsPage $page |
| 34 | * @return CentralUser|null Null if the author is not available for some reason, e.g. because |
| 35 | * the account does not exist globally. |
| 36 | * @warning This method bypasses visibility checks on the author's name. |
| 37 | */ |
| 38 | public function getAuthor( ICampaignsPage $page ): ?CentralUser { |
| 39 | if ( !$page instanceof MWPageProxy ) { |
| 40 | throw new UnexpectedValueException( 'Unknown campaigns page implementation: ' . get_class( $page ) ); |
| 41 | } |
| 42 | $revStore = $this->revisionStoreFactory->getRevisionStore( $page->getWikiId() ); |
| 43 | $firstRev = $revStore->getFirstRevision( $page->getPageIdentity() ); |
| 44 | if ( !$firstRev ) { |
| 45 | return null; |
| 46 | } |
| 47 | $userIdentity = $firstRev->getUser( RevisionRecord::RAW ); |
| 48 | if ( !$userIdentity ) { |
| 49 | return null; |
| 50 | } |
| 51 | try { |
| 52 | return $this->centralUserLookup->newFromUserIdentity( $userIdentity ); |
| 53 | } catch ( UserNotGlobalException $_ ) { |
| 54 | return null; |
| 55 | } |
| 56 | } |
| 57 | } |