Promo endpoint that display only products on sale.

src/Controller/ProductController.php

@@ -2,17 +2,31 @@
 
 namespace Krzysiej\RyobiCrawler\Controller;
 
+use Illuminate\Support\ItemNotFoundException;
 use Krzysiej\RyobiCrawler\Models\Product;
+use Twig\Error\LoaderError;
+use Twig\Error\RuntimeError;
+use Twig\Error\SyntaxError;
 
 final class ProductController extends BaseController
 {
+    /**
+     * @throws SyntaxError
+     * @throws RuntimeError
+     * @throws LoaderError
+     */
     public function __invoke(int $productId): void
     {
         $product = Product::with([
             'price' => fn($query) => $query->orderBy('created_at', 'desc')
         ])->find($productId);
+
+        if(null === $product) {
+            throw new ItemNotFoundException('Product not found');
+        }
+
         $priceList = $product->price()->pluck('price')->implode(',');
         $priceDates = $product->price()->pluck('created_at')->map(fn($date) => $date->format('Y-m-d'))->implode("','");
-        $this->twig->display('product.html.twig', ['product' => $product ?? [], 'price_list' => $priceList, 'price_dates' => $priceDates]);
+        $this->twig->display('product.html.twig', ['product' => $product, 'price_list' => $priceList, 'price_dates' => $priceDates]);
     }
 }