<?php
/**
 * For the full copyright and license information, please view the
 * docs/licenses/LICENSE.txt file that was distributed with this source code.
 */

namespace PrestaShop\PrestaShop\Adapter\Cart\CommandHandler;

use Language;
use PrestaShop\PrestaShop\Adapter\Cart\AbstractCartHandler;
use PrestaShop\PrestaShop\Core\CommandBus\Attributes\AsCommandHandler;
use PrestaShop\PrestaShop\Core\Domain\Cart\Command\UpdateCartLanguageCommand;
use PrestaShop\PrestaShop\Core\Domain\Cart\CommandHandler\UpdateCartLanguageHandlerInterface;
use PrestaShop\PrestaShop\Core\Domain\Cart\Exception\CartException;
use PrestaShop\PrestaShop\Core\Domain\Language\Exception\LanguageException;
use PrestaShop\PrestaShop\Core\Domain\Language\Exception\LanguageNotFoundException;
use PrestaShop\PrestaShop\Core\Domain\Language\ValueObject\LanguageId;
use PrestaShopException;

/**
 * @internal
 */
#[AsCommandHandler]
final class UpdateCartLanguageHandler extends AbstractCartHandler implements UpdateCartLanguageHandlerInterface
{
    /**
     * {@inheritdoc}
     */
    public function handle(UpdateCartLanguageCommand $command): void
    {
        $language = $this->getLanguageObject($command->getNewLanguageId());

        $this->assertLanguageIsActive($language);

        $cart = $this->getCart($command->getCartId());
        $cart->id_lang = (int) $language->id;

        try {
            if (false === $cart->update()) {
                throw new CartException('Failed to update cart language');
            }
        } catch (PrestaShopException) {
            throw new CartException(sprintf('An error occurred while trying to update language for cart with id "%s"', $cart->id));
        }
    }

    /**
     * @param LanguageId $languageId
     *
     * @return Language
     *
     * @throws LanguageException
     * @throws LanguageNotFoundException
     */
    private function getLanguageObject(LanguageId $languageId): Language
    {
        try {
            $lang = new Language($languageId->getValue());
        } catch (PrestaShopException) {
            throw new LanguageException(
                sprintf('An error occurred when fetching language object with id %d', $languageId->getValue()),
                $languageId->getValue()
            );
        }

        if ($languageId->getValue() !== $lang->id) {
            throw new LanguageNotFoundException($languageId, sprintf('Language with id "%s" was not found', $languageId->getValue()));
        }

        return $lang;
    }

    /**
     * @param Language $lang
     *
     * @throws LanguageException
     */
    private function assertLanguageIsActive(Language $lang): void
    {
        if (!$lang->active) {
            throw new LanguageException(sprintf('Language with id "%s" is not active', $lang->id), LanguageException::NOT_ACTIVE);
        }
    }
}