<?php

declare(strict_types=1);

namespace App\Form\Service\Condition;

use App\Form\Model\BookingDto;
use App\Form\Service\Contract\FieldConditionInterface;

/**
 * Condition that mirrors BookingDto::requiresParticipantEmail() into the field state layer.
 *
 * It deliberately holds no logic of its own, so the mandatory marker rendered next to the field
 * is derived from the same method that describes what validation enforces, rather than from a
 * second, independently maintained composition of age and applicant conditions.
 */
class RequiresOwnEmailCondition implements FieldConditionInterface
{
    /**
     * Evaluates whether the participant has to supply an email address of their own.
     *
     * @param BookingDto           $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 needs their own email address
     */
    public function evaluate(BookingDto $bookingDto, int $participantIndex, array $formData): bool
    {
        return $bookingDto->requiresParticipantEmail($participantIndex);
    }

    /**
     * The rule reads the date of birth, so the state has to be recalculated when it changes.
     *
     * @return string[] Array containing 'dateOfBirth'
     */
    public function getDependentFields(): array
    {
        return ['dateOfBirth'];
    }

    public function getDescription(): string
    {
        return 'Checks if the participant needs an email address of their own';
    }
}