wip: booking process, room assignment

src/Controller/Booking/CreateStep1Controller.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller\Booking;
+
+use App\Form\BookingCreateStep1Type;
+use App\Service\BookingService;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
+
+/**
+ * Handles the first step of the booking creation process.
+ *
+ * This controller manages room selection functionality where users
+ * choose the types and quantities of rooms for their booking.
+ */
+class CreateStep1Controller extends AbstractController
+{
+    use BookingCreateTrait;
+
+    public function __construct(
+        private readonly BookingService $bookingService,
+    ) {
+    }
+
+    /**
+     * Displays and processes the room selection form.
+     */
+    #[Route('/bookings/create', name: 'app_booking_create_step_1')]
+    public function index(Request $request): Response
+    {
+        $bookingCreateDto = $this->bookingService->getOrCreateBookingCreateDto($request);
+        $participantsCount = $this->bookingService->getParticipantsCount($bookingCreateDto->roomSelections, $bookingCreateDto->travelData);
+
+        // Validate step access - allow step 1 or redirect to current step
+        $this->validateStepAccess($bookingCreateDto, 1);
+
+        $form = $this->createForm(BookingCreateStep1Type::class, $bookingCreateDto, [
+            'validation_groups' => ['booking_create_step_1'],
+        ]);
+
+        $form->handleRequest($request);
+
+        if ($form->isSubmitted() && $form->isValid()) {
+            $bookingCreateDto->currentStep = 2;
+            $this->bookingService->saveBookingCreateDto($request, $bookingCreateDto);
+
+            return $this->redirectToRoute('app_booking_create_step_2');
+        }
+
+        return $this->render('booking/create_step_1.html.twig', [
+            'bookingCreateDto' => $bookingCreateDto,
+            'participantsCount' => $participantsCount,
+            'form' => $form->createView(),
+        ]);
+    }
+}