feat: add categories/list API endpoint

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

autoload/api/ApiRouter.php

@@ -104,6 +104,10 @@ class ApiRouter
                 $producerRepo = new \Domain\Producer\ProducerRepository($db);
                 return new Controllers\DictionariesApiController($statusRepo, $transportRepo, $paymentRepo, $attrRepo, $producerRepo);
             },
+            'categories' => function () use ($db) {
+                $categoryRepo = new \Domain\Category\CategoryRepository($db);
+                return new Controllers\CategoriesApiController($categoryRepo);
+            },
         ];
     }
 

autoload/api/Controllers/CategoriesApiController.php

@@ -0,0 +1,84 @@
+<?php
+namespace api\Controllers;
+
+use api\ApiRouter;
+use Domain\Category\CategoryRepository;
+
+class CategoriesApiController
+{
+    private $categoryRepo;
+
+    public function __construct(CategoryRepository $categoryRepo)
+    {
+        $this->categoryRepo = $categoryRepo;
+    }
+
+    public function list(): void
+    {
+        if (!ApiRouter::requireMethod('GET')) {
+            return;
+        }
+
+        $db = $GLOBALS['mdb'] ?? null;
+        if (!$db) {
+            ApiRouter::sendError('INTERNAL_ERROR', 'Database not available', 500);
+            return;
+        }
+
+        // Pobierz domyślny język sklepu
+        $defaultLang = $db->get('pp_langs', 'id', ['start' => 1]);
+        if (!$defaultLang) {
+            $defaultLang = 'pl';
+        }
+        $defaultLang = (string)$defaultLang;
+
+        // Pobierz wszystkie aktywne kategorie (płaska lista)
+        $rows = $db->select(
+            'pp_shop_categories',
+            ['id', 'parent_id'],
+            [
+                'status' => 1,
+                'ORDER' => ['o' => 'ASC'],
+            ]
+        );
+
+        if (!is_array($rows)) {
+            ApiRouter::sendSuccess(['categories' => []]);
+            return;
+        }
+
+        $categories = [];
+        foreach ($rows as $row) {
+            $categoryId = (int)($row['id'] ?? 0);
+            if ($categoryId <= 0) {
+                continue;
+            }
+
+            $title = $db->get('pp_shop_categories_langs', 'title', [
+                'AND' => [
+                    'category_id' => $categoryId,
+                    'lang_id' => $defaultLang,
+                ],
+            ]);
+
+            // Fallback: jeśli brak tłumaczenia w domyślnym języku, weź pierwsze dostępne
+            if (!$title) {
+                $title = $db->get('pp_shop_categories_langs', 'title', [
+                    'category_id' => $categoryId,
+                    'title[!]' => '',
+                    'LIMIT' => 1,
+                ]);
+            }
+
+            $parentId = $row['parent_id'] !== null ? (int)$row['parent_id'] : null;
+
+            $categories[] = [
+                'id' => $categoryId,
+                'parent_id' => $parentId,
+                'title' => (string)($title ?? 'Kategoria #' . $categoryId),
+            ];
+        }
+
+        ApiRouter::sendSuccess(['categories' => $categories]);
+    }
+}