Render category tree on category pages

src/Controller/CategoryController.php

@@ -11,10 +11,11 @@ final class CategoryController extends BaseController
     #[Route('/category/{category}', name: 'app_category')]
     public function __invoke(string $category): Response
     {
-        if($this->cache->getItem('list_category_'.$category)->isHit()) {
+//        if($this->cache->getItem('list_category_'.$category)->isHit()) {
-            return $this->render('productList.html.twig', ['listType' => 'category_'.$category]);
+//            return $this->render('productList.html.twig', ['listType' => 'category_'.$category]);
-        }
+//        }
 
+        /** @var Product[] $products */
         $products = Product::with(['price', 'lowestPrice'])
             ->selectRaw('products.*')
             ->distinct('products.id')
@@ -24,6 +25,26 @@ final class CategoryController extends BaseController
             ->orderByDesc('created_by')
             ->get();
 
-        return $this->render('productList.html.twig', ['products' => $products, 'listType' => 'category_'.$category]);
+        $categoriesTree = [];
+
+        foreach ($products as $product) {
+            $categoriesTree = $this->addToTree($product->categories, $categoriesTree);
+        }
+
+        return $this->render('productList.html.twig', ['products' => $products, 'listType' => 'category_' . $category, 'category' => $category, 'categoryTree' => $categoriesTree]);
+    }
+
+    private function addToTree(array $categories, mixed $categoriesTree)
+    {
+        $tmp = &$categoriesTree;
+        foreach ($categories as $category) {
+            if (empty($tmp[$category])) {
+                $tmp[$category] = ['count' => 0];
+            }
+            $tmp = &$tmp[$category];
+            $tmp['count']++;
+        }
+
+        return $categoriesTree;
     }
 }

src/Twig/AppExtension.php

@@ -2,11 +2,11 @@
 
 namespace Krzysiej\RyobiCrawler\Twig;
 
-use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Collection;
 use Krzysiej\RyobiCrawler\Models\Price;
 use Krzysiej\RyobiCrawler\Models\Product;
 use Krzysiej\RyobiCrawler\Models\Stock;
+use Symfony\Component\Routing\RouterInterface;
 use Twig\Extension\AbstractExtension;
 use Twig\TwigFilter;
 use Twig\TwigFunction;
@@ -15,6 +15,10 @@ use function Symfony\Component\Clock\now;
 
 class AppExtension extends AbstractExtension
 {
+    public function __construct(public RouterInterface $route)
+    {
+    }
+
     public function getFunctions(): array
     {
         return [
@@ -23,6 +27,7 @@ class AppExtension extends AbstractExtension
             new TwigFunction('newCount', [$this, 'newCount']),
             new TwigFunction('discontinuedCount', [$this, 'discontinuedCount']),
             new TwigFunction('lowestPriceCount', [$this, 'lowestPriceCount']),
+            new TwigFunction('renderCategoryTree', [$this, 'renderCategoryTree']),
         ];
     }
 
@@ -56,7 +61,7 @@ class AppExtension extends AbstractExtension
     public function lowestPriceCount(): int
     {
         return Product::whereRaw('priceCurrent = priceLowest')
-            ->whereRaw('lastSeen = "'.now()->format('Y-m-d').'"')
+            ->whereRaw('lastSeen = "' . now()->format('Y-m-d') . '"')
             ->whereRaw('priceCurrent < productStandardPrice')
             ->count();
     }
@@ -65,4 +70,28 @@ class AppExtension extends AbstractExtension
     {
         return $items->first(fn($item) => str_starts_with($item->created_at, $date));
     }
-}
+
+    public function renderCategoryTree($categories, $current, $level = 0): string
+    {
+        $tree = '';
+        if ($level == 0) {
+            $tree .= '<ul class="list-group list-group-flush">';
+        }
+        foreach ($categories as $categoryName => $category) {
+            $currentClass = $categoryName == $current ? 'list-group-item-primary' : '';
+            $tree .= '<a class="list-group-item list-group-item-action '.$currentClass.' text-decoration-none ms-' . ($level * 2) . '" href="' . $this->route->generate('app_category', ['category' => $categoryName]) . '">' . $categoryName . ' <span class="badge bg-primary rounded-pill">' . $category['count'] . '</span></a>';
+
+            unset($category['count']);
+            if (is_array($category) && count($category) >= 1) {
+                foreach ($category as $subcategoryName => $subCategory) {
+                    $tree .= $this->renderCategoryTree([$subcategoryName => $subCategory], $current, $level + 1);
+                }
+            }
+        }
+        if ($level == 0) {
+            $tree .= '</ul>';
+        }
+        return $tree;
+
+    }
+}

templates/productList.html.twig

@@ -2,6 +2,11 @@
 
 {% block content %}
 {% cache 'list_' ~ listType %}
+
+{%  if listType starts with 'category_' %}
+    {{ renderCategoryTree(categoryTree, category) | raw }}
+{% endif %}
+
 <div class="table-responsive">
     <table class='table table-hover'>
         <thead>

templates/template.html.twig

@@ -1,5 +1,5 @@
 <!doctype html>
-<html lang="en">
+<html lang="en" data-bs-theme="light">
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">