<?php

declare(strict_types=1);

namespace External\ZNZBundle\EventSubscriber\Ordering;

use External\ZNZBundle\Util\Product\ZNZProductUtil;
use KupShop\OrderingBundle\Event\CartEvent;
use KupShop\OrderingBundle\Exception\CartValidationException;
use KupShop\OrderingBundle\Util\VIES\DICValidator;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class CartSubscriber implements EventSubscriberInterface
{
    public function __construct(
        private ZNZProductUtil $productUtil,
        private DICValidator $DICValidator,
    ) {
    }

    public static function getSubscribedEvents(): array
    {
        return [
            CartEvent::CHECK_CART_ITEMS => [
                ['checkItemsQuantity', 200],
                ['prepareDIC', 255],
            ],
        ];
    }

    /**
     * Opravim prefix u DIC.
     */
    public function prepareDIC(CartEvent $event): void
    {
        $cart = $event->getCart();
        $data = $cart->getData();

        if (empty($cart->invoice['dic'])) {
            return;
        }

        [$dicCountry, $dicNumber] = $this->DICValidator->getParsedVatNumber($cart->invoice['dic'], false);
        if (empty($dicCountry) && !empty($data['dic_country'])) {
            $cart->invoice['dic'] = $this->translateDICCountry($data['dic_country']).$dicNumber;
            $cart->save();
        }
    }

    /**
     * Kontrola maximalniho poctu kusu v kosiku na jednu objednavku.
     *
     * V tabulce `znz_products_website` je sloupec `max_cart_quantity`, kterej rika, kolik kusu
     * si muzu maximalne vlozit do kosiku na jednu objednavku.
     */
    public function checkItemsQuantity(CartEvent $event): void
    {
        $purchaseState = $event->getCart()->getPurchaseState();

        $products = $purchaseState->createProductCollection();

        $this->productUtil->fetchZNZMaxCartQuantity($products);

        foreach ($purchaseState->getProducts() as $item) {
            if (!($maxQuantity = ($item->getProduct()->znz_max_cart_quantity ?? null))) {
                continue;
            }

            if ($item->getPieces() > $maxQuantity) {
                throw new CartValidationException(
                    sprintf(translate('error_max_cart_quantity', 'znz'), $item->getName(), $maxQuantity),
                    data: ['id' => 'outOfStock']
                );
            }
        }
    }

    private function translateDICCountry(string $country): string
    {
        return match ($country) {
            'GR' => 'EL',
            default => $country,
        };
    }
}