<?php

declare(strict_types=1);

namespace Esun\MultiLocaleTranslation\Plugin\Cms;

use Esun\MultiLocaleTranslation\Model\CmsTranslationRepository;
use Magento\Cms\Model\Page;
use Magento\Framework\App\State;
use Magento\Framework\Exception\LocalizedException;
use Magento\Store\Model\StoreManagerInterface;

class ApplyStoreTranslationToPage
{
    private const FIELDS = [
        'title',
        'content_heading',
        'content',
        'meta_title',
        'meta_keywords',
        'meta_description',
        'layout_update_xml',
        'custom_layout_update_xml',
        'page_layout',
        'custom_theme',
        'custom_root_template',
        'sort_order',
    ];

    public function __construct(
        private readonly CmsTranslationRepository $translationRepository,
        private readonly StoreManagerInterface $storeManager,
        private readonly State $appState
    ) {
    }

    public function afterLoad(Page $subject, Page $result): Page
    {
        if (!$this->isFrontendArea()) {
            return $result;
        }

        $storeId = (int)$this->storeManager->getStore()->getId();
        if ($storeId <= 0 || !$subject->getId()) {
            return $result;
        }

        $translations = $this->translationRepository->getTranslations(
            (int)$subject->getId(),
            $storeId,
            CmsTranslationRepository::ENTITY_PAGE,
            self::FIELDS
        );

        foreach (self::FIELDS as $field) {
            if (!array_key_exists($field, $translations)) {
                continue;
            }
            $subject->setData($field, $translations[$field]);
        }

        return $result;
    }

    private function isFrontendArea(): bool
    {
        try {
            return $this->appState->getAreaCode() === 'frontend';
        } catch (LocalizedException) {
            return false;
        }
    }
}