<?php
declare(strict_types=1);

namespace Esun\CustomerVat\Observer;

use Esun\CustomerVat\Model\TaxContextResolver;
use Magento\Framework\Event\Observer;
use Magento\Framework\Event\ObserverInterface;
use Magento\Quote\Model\Quote;

class UpdateQuoteVatContext implements ObserverInterface
{
    public function __construct(private readonly TaxContextResolver $resolver)
    {
    }

    public function execute(Observer $observer): void
    {
        $quote = $observer->getEvent()->getQuote();
        if (!$quote instanceof Quote || !(int)$quote->getStoreId()) {
            return;
        }
        $address = $quote->isVirtual() ? $quote->getBillingAddress() : $quote->getShippingAddress();
        $context = $this->resolver->resolve(
            (int)$quote->getStoreId(),
            (int)$quote->getCustomerId(),
            (string)$address->getCountryId()
        );
        $vat = $context->vatApplication;
        $quote->addData([
            'esun_vat_id' => $vat ? (int)$vat->getId() : null,
            'esun_vat_number' => $vat ? (string)$vat->getData('vat_number') : null,
            'esun_vat_country_id' => $vat ? (string)$vat->getData('country_id') : null,
            'esun_vat_company_name' => $vat ? (string)$vat->getData('company_name') : null,
            'esun_vat_exempt' => $context->exempt ? 1 : 0,
            'esun_nominal_tax_rate' => $context->nominalRate,
            'esun_tax_mode' => $context->mode,
        ]);
    }
}