feat: enforce profile data completeness before entering booking flow

src/Service/ProfileCompletenessChecker.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\BusProNet\Model\PersonalData;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
+/**
+ * Validates profile completeness for booking requirements.
+ *
+ * Checks whether a user's personal data contains all required fields needed to create
+ * or edit bookings using Symfony's validation system with the 'personal_data' group.
+ * Required fields include name, gender, date of birth, nationality, contact information,
+ * and full address data.
+ */
+class ProfileCompletenessChecker
+{
+    private const VALIDATION_GROUP = 'personal_data';
+
+    public function __construct(
+        private readonly ValidatorInterface $validator,
+    ) {
+    }
+
+    /**
+     * Checks if the personal data contains all required fields for booking operations.
+     *
+     * Validates against the 'personal_data' group which includes:
+     * - firstName and name (personal identification)
+     * - gender and dateOfBirth (personal attributes)
+     * - nationality (booking form requirement)
+     * - email and mobile (communication)
+     * - street, postCode, city, country (applicant address)
+     *
+     * @param PersonalData $personalData The personal data to validate
+     *
+     * @return bool True if all required fields are present and valid, false otherwise
+     */
+    public function isComplete(PersonalData $personalData): bool
+    {
+        $violations = $this->validator->validate($personalData, null, [self::VALIDATION_GROUP]);
+
+        return 0 === $violations->count();
+    }
+}