Log the registered track for AutoDJ debugging.

src/Entity/Song.php

@@ -221,6 +221,14 @@ class Song
         return $this->history;
     }
 
+    /**
+     * @return string A string identifying this entity.
+     */
+    public function __toString(): string
+    {
+        return 'Song ' . $this->id . ': ' . $this->artist . ' - ' . $this->title;
+    }
+
     /**
      * Retrieve the API version of the object/array.
      *

src/Entity/SongHistory.php

@@ -325,7 +325,7 @@ class SongHistory
         if (null === $cued || 0 === $cued) {
             $this->setTimestampCued(time());
         }
-        
+
         $this->sent_to_autodj = true;
     }
 
@@ -559,4 +559,11 @@ class SongHistory
 
         return $response;
     }
+
+    public function __toString()
+    {
+        return (null !== $this->media)
+            ? (string)$this->media
+            : (string)$this->song;
+    }
 }

src/Entity/StationMedia.php

@@ -3,8 +3,8 @@ namespace App\Entity;
 
 use App\Annotations\AuditLog;
 use App\ApiUtilities;
-use App\Radio\Backend\Liquidsoap;
 use App\Normalizer\Annotation\DeepNormalize;
+use App\Radio\Backend\Liquidsoap;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
@@ -795,7 +795,7 @@ class StationMedia
      */
     public function __toString(): string
     {
-        return $this->unique_id . ': ' . $this->artist . ' - ' . $this->title;
+        return 'StationMedia ' . $this->unique_id . ': ' . $this->artist . ' - ' . $this->title;
     }
 
     /**

src/Event/Radio/GetNextSong.php

@@ -8,7 +8,7 @@ class GetNextSong extends Event
 {
     /** @var null|string|Entity\SongHistory The next song, if it's already calculated. */
     protected $next_song;
-    
+
     protected Entity\Station $station;
 
     public function __construct(Entity\Station $station)
@@ -56,4 +56,11 @@ class GetNextSong extends Event
     {
         return $this->station;
     }
+
+    public function __toString()
+    {
+        return (null !== $this->next_song)
+            ? (string)$this->next_song
+            : 'No Song';
+    }
 }

src/Radio/AutoDJ.php

@@ -321,7 +321,9 @@ class AutoDJ implements EventSubscriberInterface
 
                     if ($event->setNextSong($this->playSongFromPlaylist($playlist, $cued_song_history,
                         $preferredMode))) {
-                        $this->logger->info('Playable track found and registered.');
+                        $this->logger->info('Playable track found and registered.', [
+                            'next_song' => (string)$event,
+                        ]);
                         return;
                     }
                 }