<?php

declare(strict_types=1);

namespace App\Queries\Timeslots;

use App\Contracts\Query;
use App\Contracts\QueryInput;
use Carbon\CarbonImmutable;
use Carbon\CarbonInterface;
use Domain\Ports\Repositories\ShopRepository;
use Domain\Services\PickupSchedulingService;
use Webmozart\Assert\Assert;

/**
 * @implements \App\Contracts\Query<\App\Queries\Timeslots\GetAvailableTimeslotsQueryInput, \App\Queries\Timeslots\GetAvailableTimeslotsQueryOutput>
 */
final readonly class GetAvailableTimeslotsQuery implements Query
{
    private const int TIMESLOTS_DAY_TARGET = 28;

    public function __construct(
        private readonly PickupSchedulingService $pickupService,
        private readonly ShopRepository $shopRepository
    ) {
    }

    public function __invoke(QueryInput $input): GetAvailableTimeslotsQueryOutput
    {
        Assert::isAOf(
            $input,
            GetAvailableTimeslotsQueryInput::class,
        );

        $domainShop = $this->shopRepository->find($input->forShop);

        /** @var \Domain\Models\ValueObjects\PickupTimeSlot[] */
        $timeslotList = [];

        if ($domainShop !== null) {
            $timeslotList = $this->pickupService->getTimeSlotsFor(
                $domainShop,
                $this->getUntil()
            );
        }

        return new GetAvailableTimeslotsQueryOutput(
            timeslotList: $timeslotList
        );
    }

    private function getUntil(): CarbonInterface
    {
        return CarbonImmutable::now()->addDays(self::TIMESLOTS_DAY_TARGET);
    }
}