metadataテーブルにexpires_atカラムを追加

メタデータの有効期限が現在より過去の場合、メタデータを再取得する

routes/api.php

@@ -26,13 +26,14 @@ Route::get('/checkin/card', function (Request $request, MetadataResolver $resolv
     $url = $formatter->normalizeUrl($request->input('url'));
 
     $metadata = App\Metadata::find($url);
-    if ($metadata == null) {
+    if ($metadata == null || new DateTime($metadata->expires_at) < new DateTime("now")) {
         $resolved = $resolver->resolve($url);
         $metadata = App\Metadata::create([
             'url' => $url,
             'title' => $resolved->title,
             'description' => $resolved->description,
-            'image' => $resolved->image
+            'image' => $resolved->image,
+            'expires_at' => $resolved->expires_at
         ]);
     }