<?php

declare(strict_types=1);

namespace App\Form\Service;

use App\BusProNet\Utility\DirectionMapper;
use App\Form\Model\BookingDto;
use App\Form\Service\Abstract\AbstractParticipantFieldHandler;

/**
 * Handles processing of inbound transportation service selection.
 *
 * This handler manages inbound (RUECK) transportation options including bus and
 * self-organized (PKW) services with pricing and availability validation.
 * It processes the transportationInbound field from form submissions and updates
 * the participant DTO with validated selections.
 */
class ParticipantTransportationInboundFieldHandler extends AbstractParticipantFieldHandler
{
    public function getFieldName(): string
    {
        return 'transportationInbound';
    }

    /**
     * Determines if this handler should process the field based on submitted data.
     *
     * For transportation selection fields, we always need to process to handle cases
     * where the selection is cleared (field not present in data). This ensures the
     * participant DTO is updated with null when no transportation is selected.
     *
     * @param array<string, mixed> $submittedData    The submitted participant form data
     * @param string               $mode             The booking mode (BookingDto::MODE_CREATE or MODE_EDIT)
     * @param int                  $participantIndex The index of the participant being processed
     *
     * @return bool Always returns true for transportation selection fields
     */
    public function shouldProcess(array $submittedData, string $mode, int $participantIndex): bool
    {
        return true; // Always process to handle deselection cases
    }

    public function processField(array $submittedData, BookingDto $bookingDto, int $participantIndex): void
    {
        $participant = $this->getParticipant($bookingDto, $participantIndex);
        if (null === $participant) {
            return;
        }

        $selectedTransportation = $this->getFieldValue($submittedData, $this->getFieldName());

        // Get all inbound transportation services (availability filtering happens at form level)
        $services = $bookingDto->travel->getTransportationServicesByDirection(
            DirectionMapper::INBOUND_TRAVEL
        );

        // Validate and update participant with selection
        $participant->transportationInbound = $this->findItemById($selectedTransportation, $services);
    }
}