баги с превью

app/Controllers/CatalogController.php

@@ -13,6 +13,9 @@ final class CatalogController
     {
         $categoryRepository = new CategoryRepository();
         $productRepository = new ProductRepository();
+        $pagination = $this->paginationInput();
+        $totalProducts = $productRepository->catalogTotal(true);
+        $products = $productRepository->catalogPreview($pagination['limit'], $pagination['offset'], true);
 
         view('catalog/index', [
             'title' => 'Каталог Рыбсток - рыба, морепродукты, мясо, сыры и продукты',
@@ -24,7 +27,8 @@ final class CatalogController
             ],
             'categories' => $categoryRepository->tree(),
             'currentCategory' => null,
-            'products' => $productRepository->catalogPreview(48),
+            'products' => $products,
+            'pagination' => $this->paginationData('/catalog', $totalProducts, count($products), $pagination),
         ]);
     }
 
@@ -48,6 +52,9 @@ final class CatalogController
         }
 
         $categoryName = (string) $category['name'];
+        $pagination = $this->paginationInput();
+        $totalProducts = $productRepository->categoryTotal((int) $category['id'], true);
+        $products = $productRepository->forCategory((int) $category['id'], $pagination['limit'], $pagination['offset'], true);
 
         view('catalog/index', [
             'title' => $category['seo_title'] ?: $categoryName . ' - купить в Рыбсток с доставкой по Москве',
@@ -56,7 +63,8 @@ final class CatalogController
             'breadcrumbs' => $categoryRepository->breadcrumbs((int) $category['id']),
             'categories' => $categoryRepository->tree(),
             'currentCategory' => $category,
-            'products' => $productRepository->forCategory((int) $category['id'], 48),
+            'products' => $products,
+            'pagination' => $this->paginationData('/catalog/' . (string) $category['slug'], $totalProducts, count($products), $pagination),
         ]);
     }
 
@@ -100,4 +108,58 @@ final class CatalogController
             'images' => $productRepository->imagesForProduct((int) $product['id']),
         ]);
     }
+
+    /**
+     * @return array{page:int, limit:int, offset:int, per_page:int, cumulative:bool}
+     */
+    private function paginationInput(): array
+    {
+        $perPage = 48;
+        $cumulativeLimit = isset($_GET['limit']) ? (int) $_GET['limit'] : 0;
+
+        if ($cumulativeLimit > 0) {
+            $limit = max($perPage, min($cumulativeLimit, 5000));
+
+            return [
+                'page' => 1,
+                'limit' => $limit,
+                'offset' => 0,
+                'per_page' => $perPage,
+                'cumulative' => true,
+            ];
+        }
+
+        $page = max(1, (int) ($_GET['page'] ?? 1));
+
+        return [
+            'page' => $page,
+            'limit' => $perPage,
+            'offset' => ($page - 1) * $perPage,
+            'per_page' => $perPage,
+            'cumulative' => false,
+        ];
+    }
+
+    /**
+     * @param array{page:int, limit:int, offset:int, per_page:int, cumulative:bool} $input
+     * @return array<string, mixed>
+     */
+    private function paginationData(string $basePath, int $total, int $currentCount, array $input): array
+    {
+        $shown = min($total, $input['offset'] + $currentCount);
+        $nextLimit = min($total, max($shown, $input['limit']) + $input['per_page']);
+
+        return [
+            'base_path' => $basePath,
+            'total' => $total,
+            'shown' => $shown,
+            'page' => $input['page'],
+            'pages' => max(1, (int) ceil($total / $input['per_page'])),
+            'per_page' => $input['per_page'],
+            'limit' => $input['limit'],
+            'has_more' => $shown < $total,
+            'next_limit' => $nextLimit,
+            'cumulative' => $input['cumulative'],
+        ];
+    }
 }