wip: major refactoring

src/Form/Service/Condition/ApplicantCondition.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Form\Service\Condition;
+
+use App\Form\Model\BookingDtoInterface;
+use App\Form\Service\Contract\FieldConditionInterface;
+
+/**
+ * Condition that checks if the participant is the applicant.
+ *
+ * This is used to apply field state logic (e.g., enable/disable fields)
+ * specifically for the applicant participant in the booking.
+ *
+ * The default logic assumes the applicant is the first participant (index 0),
+ * but this can be adjusted if your domain uses a different rule or property.
+ */
+class ApplicantCondition implements FieldConditionInterface
+{
+    /**
+     * Evaluates if the participant is the applicant.
+     *
+     * @param BookingDtoInterface  $bookingDto       The current booking data (create or edit)
+     * @param int                  $participantIndex The index of the participant being evaluated
+     * @param array<string, mixed> $formData         Current form data (unused)
+     *
+     * @return bool True if the participant is the applicant, false otherwise
+     */
+    public function evaluate(BookingDtoInterface $bookingDto, int $participantIndex, array $formData): bool
+    {
+        // Default: applicant is the first participant (index 0)
+        return $participantIndex === 0;
+    }
+
+    public function getDependentFields(): array
+    {
+        return [];
+    }
+
+    public function getDescription(): string
+    {
+        return 'Checks if the participant is the applicant (index 0)';
+    }
+}