expose sets list endpoint

backend/app/Http/Controllers/SetController.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Set\Set;
+use App\Set\UseCases\ListSets\ListSets;
+use Illuminate\Http\JsonResponse;
+
+class SetController extends Controller
+{
+    public function __construct(
+        private ListSets $listSets,
+    ) {}
+
+    public function index(): JsonResponse
+    {
+        $sets = array_map(function (Set $set): array {
+            return [
+                'id' => $set->getId(),
+                'name' => $set->getName(),
+            ];
+        }, $this->listSets->execute());
+
+        return new JsonResponse(['sets' => $sets]);
+    }
+}

backend/app/Set/UseCases/ListSets/ListSets.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Set\UseCases\ListSets;
+
+use App\Set\Set;
+use App\Set\SetRepository;
+
+class ListSets
+{
+    public function __construct(
+        private SetRepository $setRepository,
+    ) {}
+
+    /**
+     * @return list<Set>
+     */
+    public function execute(): array
+    {
+        return $this->setRepository->all();
+    }
+}

backend/routes/api.php

@@ -1,6 +1,7 @@
 <?php
 
 use App\Http\Controllers\AuthController;
+use App\Http\Controllers\SetController;
 use App\Http\Middleware\AuthMiddleware;
 use Illuminate\Support\Facades\Route;
 
@@ -10,5 +11,6 @@ Route::post('/confirm-email', [AuthController::class, 'confirmEmail']);
 
 Route::middleware(AuthMiddleware::class)->group(function (): void {
     Route::get('/me', [AuthController::class, 'me']);
+    Route::get('/sets', [SetController::class, 'index']);
     Route::post('/logout', [AuthController::class, 'logout']);
 });