<?php

namespace Modules\Core\Shipping\Support;

use Lunar\Shipping\Facades\Shipping;
use Lunar\Shipping\Models\ShippingMethod;
use Modules\Core\Shipping\Carriers\BoxNow\BoxNowRateDriver;

/**
 * Whether something is Box Now — a checkout option, a shipping method, a
 * driver key — by checking that the driver is a BoxNowRateDriver, never by
 * comparing names: an option's identifier is the merchant-typed method
 * code (may well not be "box-now"), and the driver may be registered under
 * any key.
 */
class BoxNowShipping
{
    public static function isOption(?string $identifier): bool
    {
        return $identifier !== null
            && self::isMethod(ShippingMethod::where('code', $identifier)->first());
    }

    public static function isMethod(?ShippingMethod $method): bool
    {
        return self::isDriver($method?->driver);
    }

    /**
     * A shipping driver key (a method's `driver`, a shipment's `carrier`)
     * that resolves to Box Now. getSupportedDrivers() rather than
     * Shipping::driver(), which throws for a key no longer registered.
     */
    public static function isDriver(?string $driver): bool
    {
        return $driver !== null
            && Shipping::getSupportedDrivers()->get($driver) instanceof BoxNowRateDriver;
    }

    /**
     * Codes of every Box Now shipping method — for marking options in bulk.
     *
     * @return array<int, string>
     */
    public static function codes(): array
    {
        return ShippingMethod::all()
            ->filter(fn (ShippingMethod $method) => self::isMethod($method))
            ->pluck('code')
            ->values()
            ->all();
    }
}