#6003 -- Update "play once per x songs" scheduling.

src/Entity/Repository/StationQueueRepository.php

@@ -68,42 +68,28 @@ final class StationQueueRepository extends AbstractStationBasedRepository
             ->execute();
     }
 
-    /**
-     * @return int[]
-     */
-    public function getRecentPlaylists(
-        Entity\Station $station,
-        int $rows
-    ): array {
-        /*
-         * Explanation for why this is done in two queries:
-         * MariaDB won't apply indices if you order by one field ASC, then another DESC.
-         * The combiend query would order by is_played ASC, then timestamp_played DESC.
-         * This forces the use of indices at the expense of slightly more records being handled.
-         */
-        $baseQueryBuilder = $this->em->createQueryBuilder()
-            ->select('sq.timestamp_played, sq.is_visible, sq.playlist_id')
-            ->from(Entity\StationQueue::class, 'sq')
-            ->where('sq.station = :station')
-            ->setParameter('station', $station)
-            ->orderBy('sq.timestamp_played', 'DESC');
+    public function isPlaylistRecentlyPlayed(
+        Entity\StationPlaylist $playlist,
+        ?int $playPerSongs = null
+    ): bool {
+        $playPerSongs ??= $playlist->getPlayPerSongs();
 
-        $unplayedRows = (clone $baseQueryBuilder)
-            ->andWhere('sq.is_played = 0')
-            ->getQuery()
-            ->getArrayResult();
+        $recentPlayedQuery = $this->em->createQuery(
+            <<<'DQL'
+                SELECT sq.playlist_id
+                FROM App\Entity\StationQueue sq
+                WHERE sq.station = :station
+                AND sq.playlist_id IS NOT NULL
+                AND (sq.playlist = :playlist OR sq.is_visible = 1)
+                ORDER BY sq.id DESC
+            DQL
+        )->setParameters([
+            'station' => $playlist->getStation(),
+            'playlist' => $playlist,
+        ])->setMaxResults($playPerSongs);
 
-        $playedRows = (clone $baseQueryBuilder)
-            ->andWhere('sq.is_played = 1')
-            ->getQuery()
-            ->setMaxResults($rows)
-            ->getArrayResult();
-
-        return array_slice(
-            array_merge($unplayedRows, $playedRows),
-            0,
-            $rows
-        );
+        $recentPlayedPlaylists = $recentPlayedQuery->getSingleColumnResult();
+        return in_array($playlist->getIdRequired(), (array)$recentPlayedPlaylists, true);
     }
 
     /**

src/Radio/AutoDJ/QueueBuilder.php

@@ -56,17 +56,11 @@ final class QueueBuilder implements EventSubscriberInterface
         $expectedPlayTime = $event->getExpectedPlayTime();
 
         $activePlaylistsByType = [];
-        $oncePerXSongHistoryCount = 15;
-
         foreach ($station->getPlaylists() as $playlist) {
             /** @var Entity\StationPlaylist $playlist */
             if ($playlist->isPlayable($event->isInterrupting())) {
                 $type = $playlist->getType();
 
-                if (Entity\Enums\PlaylistTypes::OncePerXSongs === $playlist->getTypeEnum()) {
-                    $oncePerXSongHistoryCount = max($oncePerXSongHistoryCount, $playlist->getPlayPerSongs());
-                }
-
                 $subType = ($playlist->getScheduleItems()->count() > 0) ? 'scheduled' : 'unscheduled';
                 $activePlaylistsByType[$type . '_' . $subType][$playlist->getId()] = $playlist;
             }
@@ -77,11 +71,6 @@ final class QueueBuilder implements EventSubscriberInterface
             return;
         }
 
-        $recentPlaylistHistory = $this->queueRepo->getRecentPlaylists(
-            $station,
-            $oncePerXSongHistoryCount
-        );
-
         $recentSongHistoryForDuplicatePrevention = $this->queueRepo->getRecentlyPlayedByTimeRange(
             $station,
             $expectedPlayTime,
@@ -91,7 +80,6 @@ final class QueueBuilder implements EventSubscriberInterface
         $this->logger->debug(
             'AutoDJ recent song playback history',
             [
-                'history_once_per_x_songs' => $recentPlaylistHistory,
                 'history_duplicate_prevention' => $recentSongHistoryForDuplicatePrevention,
             ]
         );
@@ -117,7 +105,7 @@ final class QueueBuilder implements EventSubscriberInterface
             $logPlaylists = [];
             foreach ($activePlaylistsByType[$currentPlaylistType] as $playlistId => $playlist) {
                 /** @var Entity\StationPlaylist $playlist */
-                if (!$this->scheduler->shouldPlaylistPlayNow($playlist, $expectedPlayTime, $recentPlaylistHistory)) {
+                if (!$this->scheduler->shouldPlaylistPlayNow($playlist, $expectedPlayTime)) {
                     continue;
                 }
 

src/Radio/AutoDJ/Scheduler.php

@@ -27,8 +27,7 @@ final class Scheduler
 
     public function shouldPlaylistPlayNow(
         Entity\StationPlaylist $playlist,
-        CarbonInterface $now = null,
-        array $recentPlaylistHistory = []
+        CarbonInterface $now = null
     ): bool {
         $this->logger->pushProcessor(
             function (LogRecord $record) use ($playlist) {
@@ -66,7 +65,7 @@ final class Scheduler
 
             case Entity\Enums\PlaylistTypes::OncePerXSongs:
                 $playPerSongs = $playlist->getPlayPerSongs();
-                $shouldPlay = !$this->wasPlaylistPlayedRecently($playlist, $recentPlaylistHistory, $playPerSongs);
+                $shouldPlay = !$this->queueRepo->isPlaylistRecentlyPlayed($playlist, $playPerSongs);
 
                 $this->logger->debug(
                     sprintf(
@@ -154,40 +153,6 @@ final class Scheduler
         return ($playedAt > $threshold);
     }
 
-    private function wasPlaylistPlayedRecently(
-        Entity\StationPlaylist $playlist,
-        array $recentPlaylistHistory = [],
-        int $length = 15
-    ): bool {
-        if (empty($recentPlaylistHistory)) {
-            return false;
-        }
-
-        $playlistId = $playlist->getIdRequired();
-
-        // Only consider playlists that are this playlist or are non-jingles.
-        $relevantSongHistory = array_slice(
-            array_filter(
-                $recentPlaylistHistory,
-                static function ($row) use ($playlistId) {
-                    return $playlistId === $row['playlist_id']
-                        ? true
-                        : $row['is_visible'];
-                }
-            ),
-            0,
-            $length
-        );
-
-        foreach ($relevantSongHistory as $sh_row) {
-            if ($playlistId === (int)$sh_row['playlist_id']) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
     /**
      * Get the duration of scheduled play time in seconds (used for remote URLs of indeterminate length).
      *