Add twig extra bundle to use currency formatter filter. Add custom twig method to display number of active promos. Remove old index.php file.

src/Controller/ProductController.php

@@ -2,7 +2,6 @@
 
 namespace Krzysiej\RyobiCrawler\Controller;
 
-use Illuminate\Support\ItemNotFoundException;
 use Krzysiej\RyobiCrawler\Models\Product;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
@@ -21,7 +20,8 @@ final class ProductController extends BaseController
     public function __invoke(int $productId): Response
     {
         $product = Product::with([
-            'price' => fn($query) => $query->orderBy('created_at', 'desc')
+            'price' => fn($query) => $query->orderBy('created_at', 'desc'),
+            'stock' => fn($query) => $query->orderBy('created_at', 'desc'),
         ])->find($productId);
 
         if(null === $product) {

src/Twig/AppExtension.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Krzysiej\RyobiCrawler\Twig;
+
+use Illuminate\Database\Eloquent\Builder;
+use Krzysiej\RyobiCrawler\Models\Product;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+class AppExtension extends AbstractExtension
+{
+    public function getFunctions()
+    {
+        return [
+            new TwigFunction('promosCount', [$this, 'promosCount']),
+        ];
+    }
+
+    public function promosCount(): int
+    {
+        return Product::whereHas('currentPrice', fn(Builder $query) => $query->whereColumn('price', '<', 'productStandardPrice'))->with(['currentPrice'])->count();
+    }
+}