1 files changed, 79 insertions, 0 deletions
diff --git a/www/wiki/includes/jobqueue/jobs/ClearWatchlistNotificationsJob.php b/www/wiki/includes/jobqueue/jobs/ClearWatchlistNotificationsJob.php
new file mode 100644
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+++ b/www/wiki/includes/jobqueue/jobs/ClearWatchlistNotificationsJob.php
@@ -0,0 +1,79 @@
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup JobQueue
+ */
+
+use MediaWiki\MediaWikiServices;
+
+/**
+ * Job for clearing all of the "last viewed" timestamps for a user's watchlist
+ *
+ * Job parameters include:
+ *   - userId: affected user ID [required]
+ *   - casTime: UNIX timestamp of the event that triggered this job [required]
+ *
+ * @ingroup JobQueue
+ * @since 1.31
+ */
+class ClearWatchlistNotificationsJob extends Job {
+	function __construct( Title $title, array $params ) {
+		parent::__construct( 'clearWatchlistNotifications', $title, $params );
+
+		static $required = [ 'userId', 'casTime' ];
+		$missing = implode( ', ', array_diff( $required, array_keys( $this->params ) ) );
+		if ( $missing != '' ) {
+			throw new InvalidArgumentException( "Missing paramter(s) $missing" );
+		}
+
+		$this->removeDuplicates = true;
+	}
+
+	public function run() {
+		$services = MediaWikiServices::getInstance();
+		$lbFactory = $services->getDBLoadBalancerFactory();
+		$rowsPerQuery = $services->getMainConfig()->get( 'UpdateRowsPerQuery' );
+
+		$dbw = $lbFactory->getMainLB()->getConnection( DB_MASTER );
+		$ticket = $lbFactory->getEmptyTransactionTicket( __METHOD__ );
+
+		$asOfTimes = array_unique( $dbw->selectFieldValues(
+			'watchlist',
+			'wl_notificationtimestamp',
+			[ 'wl_user' => $this->params['userId'], 'wl_notificationtimestamp IS NOT NULL' ],
+			__METHOD__,
+			[ 'ORDER BY' => 'wl_notificationtimestamp DESC' ]
+		) );
+
+		foreach ( array_chunk( $asOfTimes, $rowsPerQuery ) as $asOfTimeBatch ) {
+			$dbw->update(
+				'watchlist',
+				[ 'wl_notificationtimestamp' => null ],
+				[
+					'wl_user' => $this->params['userId'],
+					'wl_notificationtimestamp' => $asOfTimeBatch,
+					// New notifications since the reset should not be cleared
+					'wl_notificationtimestamp < ' .
+						$dbw->addQuotes( $dbw->timestamp( $this->params['casTime'] ) )
+				],
+				__METHOD__
+			);
+			$lbFactory->commitAndWaitForReplication( __METHOD__, $ticket );
+		}
+	}
+}