fix: get playables not returnig episodes

app/Casts/SongStorageCast.php

@@ -15,10 +15,10 @@ class SongStorageCast implements CastsAttributes
     }
 
     /** @param SongStorageType|string|null $value */
-    public function set(Model $model, string $key, mixed $value, array $attributes): string
+    public function set(Model $model, string $key, mixed $value, array $attributes): ?string
     {
         $type = $value instanceof SongStorageType ? $value : SongStorageType::tryFrom($value);
 
-        return $type->value;
+        return $type?->value;
     }
 }

app/Repositories/SongRepository.php

@@ -204,7 +204,7 @@ class SongRepository extends Repository
      */
     public function getManyInCollaborativeContext(array $ids, ?User $scopedUser = null): Collection
     {
-        return Song::query(type: PlayableType::SONG, user: $scopedUser ?? $this->auth->user())
+        return Song::query(user: $scopedUser ?? $this->auth->user())
             ->accessible()
             ->withMeta()
             ->when(License::isPlus(), static function (SongBuilder $query): SongBuilder {

database/factories/SongFactory.php

@@ -47,6 +47,14 @@ class SongFactory extends Factory
         return $this->state(fn () => [ // @phpcs:ignore
             'podcast_id' => Podcast::factory(),
             'is_public' => true,
+            'artist_id' => null,
+            'owner_id' => null,
+            'album_id' => null,
+            'storage' => null,
+            'path' => $this->faker->url(),
+            'lyrics' => '',
+            'track' => null,
+            'disc' => 0,
         ]);
     }
 }

tests/Integration/Services/PlaylistServiceTest.php

@@ -4,6 +4,7 @@ namespace Tests\Integration\Services;
 
 use App\Models\Playlist;
 use App\Models\PlaylistFolder;
+use App\Models\Podcast;
 use App\Models\Song;
 use App\Services\PlaylistService;
 use App\Values\SmartPlaylistRuleGroupCollection;
@@ -210,7 +211,11 @@ class PlaylistServiceTest extends TestCase
         /** @var Playlist $playlist */
         $playlist = Playlist::factory()->create();
         $playlist->addPlayables(Song::factory(3)->create());
-        $episodes = Song::factory(2)->asEpisode()->create();
+
+        $podcast = Podcast::factory()->create();
+        $episodes = Song::factory(2)->asEpisode()->for($podcast)->create();
+
+        $playlist->user->subscribeToPodcast($podcast);
 
         $addedEpisodes = $this->service->addPlayablesToPlaylist($playlist, $episodes, $playlist->user);
         $playlist->refresh();