<?php

declare(strict_types=1);

namespace App\Service;

use App\Exception\AccommodationSessionNotFoundException;
use App\Form\Model\AccommodationBookingDto;
use Symfony\Component\HttpFoundation\Request;

class AccommodationSessionManager
{
    // Key kept as accommodation_inquiry for session continuity during the inquiry→booking rename.
    public const SESSION_KEY = 'accommodation_inquiry';

    public function getDto(Request $request): ?AccommodationBookingDto
    {
        $session = $request->getSession();

        if (!$session->has(self::SESSION_KEY)) {
            return null;
        }

        $dto = $session->get(self::SESSION_KEY);

        if (!$dto instanceof AccommodationBookingDto) {
            return null;
        }

        return $dto;
    }

    public function getOrFail(Request $request): AccommodationBookingDto
    {
        $dto = $this->getDto($request);

        if (null === $dto) {
            throw new AccommodationSessionNotFoundException();
        }

        return $dto;
    }

    public function save(Request $request, AccommodationBookingDto $dto): void
    {
        $request->getSession()->set(self::SESSION_KEY, $dto);
    }

    public function clear(Request $request): void
    {
        $request->getSession()->remove(self::SESSION_KEY);
    }
}