feat: offer contact validation flow

src/Controller/Groups/Offer/AbstractController.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller\Groups\Offer;
+
+use App\Entity\Groups\AccommodationBooking;
+use App\Htmx\HxTrait;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController as SymfonyAbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+abstract class AbstractController extends SymfonyAbstractController
+{
+    use HxTrait;
+
+    /**
+     * A draft and an inquiry the office has not worked through yet are not ready to be
+     * shown, and a discarded booking must not be viewable any more — in all three cases
+     * the link behaves as if it had expired.
+     */
+    protected function isCustomerVisible(AccommodationBooking $booking): bool
+    {
+        return $booking->isCustomerAccessible() && !$booking->isRequested() && !$booking->isDiscarded();
+    }
+
+    /**
+     * Sends the browser to a full reload of the (non-modal) offer page — this is
+     * triggered from an htmx-loaded modal, so a plain render/redirect here would
+     * get appended as an inert HTML fragment instead of actually navigating.
+     */
+    protected function redirectToOfferPage(Request $request, string $uuid): Response
+    {
+        $url = $this->generateUrl('app_groups_offer_view', ['uuid' => $uuid]);
+
+        return $this->htmxRedirect($request, $url);
+    }
+}