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| 1 | <?php |
| 2 | |
| 3 | namespace Flow; |
| 4 | |
| 5 | use MediaWiki\Title\Title; |
| 6 | use MediaWiki\User\User; |
| 7 | use Wikimedia\Rdbms\IReadableDatabase; |
| 8 | |
| 9 | /** |
| 10 | * Is there a core object for retrieving multiple watchlist items? |
| 11 | */ |
| 12 | class WatchedTopicItems { |
| 13 | |
| 14 | /** @var User */ |
| 15 | protected $user; |
| 16 | /** @var IReadableDatabase */ |
| 17 | protected $watchListDb; |
| 18 | /** @var true[][] */ |
| 19 | protected $overrides = []; |
| 20 | |
| 21 | public function __construct( User $user, IReadableDatabase $watchListDb ) { |
| 22 | $this->user = $user; |
| 23 | $this->watchListDb = $watchListDb; |
| 24 | } |
| 25 | |
| 26 | /** |
| 27 | * Helps prevent reading our own writes. If we have explicitly |
| 28 | * watched this title in this request set it here instead of |
| 29 | * querying a replica and possibly not noticing due to replica lag. |
| 30 | * @param Title $title |
| 31 | */ |
| 32 | public function addOverrideWatched( Title $title ) { |
| 33 | $this->overrides[$title->getNamespace()][$title->getDBkey()] = true; |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * @param string[] $titles Array of UUID strings |
| 38 | * @return array |
| 39 | */ |
| 40 | public function getWatchStatus( array $titles ) { |
| 41 | $titles = array_unique( $titles ); |
| 42 | $result = array_fill_keys( $titles, false ); |
| 43 | |
| 44 | if ( !$this->user->getId() ) { |
| 45 | return $result; |
| 46 | } |
| 47 | |
| 48 | $queryTitles = []; |
| 49 | foreach ( $titles as $id ) { |
| 50 | $obj = Title::makeTitleSafe( NS_TOPIC, $id ); |
| 51 | if ( $obj ) { |
| 52 | $key = $obj->getDBkey(); |
| 53 | if ( isset( $this->overrides[$obj->getNamespace()][$key] ) ) { |
| 54 | $result[strtolower( $key )] = true; |
| 55 | } else { |
| 56 | $queryTitles[] = $obj->getDBkey(); |
| 57 | } |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | if ( !$queryTitles ) { |
| 62 | return $result; |
| 63 | } |
| 64 | |
| 65 | $res = $this->watchListDb->newSelectQueryBuilder() |
| 66 | ->select( 'wl_title' ) |
| 67 | ->from( 'watchlist' ) |
| 68 | ->where( [ |
| 69 | 'wl_user' => $this->user->getId(), |
| 70 | 'wl_namespace' => NS_TOPIC, |
| 71 | 'wl_title' => $queryTitles |
| 72 | ] ) |
| 73 | ->caller( __METHOD__ ) |
| 74 | ->fetchResultSet(); |
| 75 | foreach ( $res as $row ) { |
| 76 | $result[strtolower( $row->wl_title )] = true; |
| 77 | } |
| 78 | return $result; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * @return User |
| 83 | */ |
| 84 | public function getUser() { |
| 85 | return $this->user; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * @return IReadableDatabase |
| 90 | */ |
| 91 | public function getWatchlistDb() { |
| 92 | return $this->watchListDb; |
| 93 | } |
| 94 | } |