Create and use new "current art" endpoint.

config/routes/api.php

@@ -76,8 +76,15 @@ return static function (RouteCollectorProxy $app) {
                 }
             );
 
-            $group->get('/nowplaying[/{station_id}]', Controller\Api\NowPlayingAction::class)
-                ->setName('api:nowplaying:index');
+            $group->get(
+                '/nowplaying[/{station_id}]',
+                Controller\Api\NowPlayingController::class . ':getAction'
+            )->setName('api:nowplaying:index');
+
+            $group->get(
+                '/nowplaying/{station_id}/art[/{timestamp}.jpg]',
+                Controller\Api\NowPlayingController::class . ':getArtAction'
+            )->setName('api:nowplaying:art');
 
             $group->get('/stations', Controller\Api\Stations\IndexController::class . ':listAction')
                 ->setName('api:stations:list')

src/Controller/Api/NowPlayingController.php

@@ -49,7 +49,7 @@ use Psr\SimpleCache\CacheInterface;
         ]
     )
 ]
-final class NowPlayingAction
+final class NowPlayingController
 {
     public function __construct(
         private readonly EntityManagerInterface $em,
@@ -57,7 +57,7 @@ final class NowPlayingAction
     ) {
     }
 
-    public function __invoke(
+    public function getAction(
         ServerRequest $request,
         Response $response,
         ?string $station_id = null
@@ -83,6 +83,23 @@ final class NowPlayingAction
         );
     }
 
+    public function getArtAction(
+        ServerRequest $request,
+        Response $response,
+        string $station_id,
+        ?string $timestamp = null
+    ): ResponseInterface {
+        $np = $this->getForStation($station_id, $request->getRouter());
+
+        $currentArt = $np?->now_playing?->song?->art;
+        if (null !== $currentArt) {
+            return $response->withRedirect((string)$currentArt, 302);
+        }
+
+        return $response->withStatus(404)
+            ->withJson(Entity\Api\Error::notFound());
+    }
+
     private function getForStation(
         string $station,
         RouterInterface $router

src/Controller/Frontend/PublicPages/PlayerAction.php

@@ -7,7 +7,6 @@ namespace App\Controller\Frontend\PublicPages;
 use App\Entity;
 use App\Exception\StationNotFoundException;
 use App\Http\Response;
-use App\Http\Router;
 use App\Http\ServerRequest;
 use Psr\Http\Message\ResponseInterface;
 
@@ -16,7 +15,6 @@ final class PlayerAction
     public function __construct(
         private readonly Entity\ApiGenerator\NowPlayingApiGenerator $npApiGenerator,
         private readonly Entity\Repository\CustomFieldRepository $customFieldRepo,
-        private readonly Entity\Repository\StationRepository $stationRepo,
     ) {
     }
 
@@ -41,9 +39,6 @@ final class PlayerAction
         $np = $this->npApiGenerator->currentOrEmpty($station);
         $np->resolveUrls($baseUrl);
 
-        $defaultAlbumArtUri = $this->stationRepo->getDefaultAlbumArtUrl($station);
-        $defaultAlbumArt = Router::resolveUri($baseUrl, $defaultAlbumArtUri, true);
-
         // Build Vue props.
         $customization = $request->getCustomization();
         $router = $request->getRouter();
@@ -108,7 +103,11 @@ final class PlayerAction
             [
                 'station' => $station,
                 'props' => $props,
-                'defaultAlbumArt' => $defaultAlbumArt,
+                'nowPlayingArtUri' => $router->named(
+                    routeName: 'api:nowplaying:art',
+                    routeParams: ['station_id' => $station->getShortName(), 'timestamp' => time()],
+                    absolute: true
+                ),
             ]
         );
     }

templates/frontend/public/index.phtml

@@ -38,7 +38,7 @@ $this->push('head');
 
 <meta property="og:title" content="<?= $this->e($station->getName() ?? '') ?>">
 <meta property="og:url" content="<?= $this->e($station->getUrl() ?? '') ?>">
-<meta property="og:image" content="<?= $defaultAlbumArt ?>">
+<meta property="og:image" content="<?= $nowPlayingArtUri ?>">
 
 <meta property="twitter:card" content="player">
 <meta property="twitter:player" content="<?= $router->named(