<?php

declare(strict_types=1);

namespace Esun\MultiLocaleTranslation\Plugin\Adminhtml;

use Esun\MultiLocaleTranslation\Model\CmsTranslationRepository;
use Magento\Cms\Controller\Adminhtml\Page\Save;
use Magento\Framework\App\Cache\Manager as CacheManager;
use Magento\Framework\App\Request\Http;
use Magento\Framework\Controller\Result\Redirect;
use Magento\Framework\Controller\Result\RedirectFactory;
use Magento\Framework\Message\ManagerInterface;

class CmsPageSave
{
    private const FIELDS = [
        'title',
        'content_heading',
        'content',
        'meta_title',
        'meta_keywords',
        'meta_description',
    ];

    public function __construct(
        private readonly Http $request,
        private readonly CmsTranslationRepository $translationRepository,
        private readonly RedirectFactory $redirectFactory,
        private readonly ManagerInterface $messageManager,
        private readonly CacheManager $cacheManager
    ) {
    }

    public function aroundExecute(Save $subject, callable $proceed): mixed
    {
        $data = $this->request->getPostValue();
        $storeId = (int)($data['translation_store_id'] ?? 0);
        if ($storeId <= 0) {
            return $proceed();
        }

        $pageId = (int)($data['page_id'] ?? $this->request->getParam('page_id'));
        if ($pageId <= 0) {
            $this->messageManager->addErrorMessage(__('The CMS page no longer exists.'));
            return $this->redirectToIndex();
        }

        try {
            $useDefault = is_array($data['use_default'] ?? null) ? $data['use_default'] : [];
            $defaultFields = [];
            $translations = [];

            foreach (self::FIELDS as $field) {
                if (!empty($useDefault[$field])) {
                    $defaultFields[] = $field;
                    continue;
                }
                if (array_key_exists($field, $data)) {
                    $translations[$field] = (string)$data[$field];
                }
            }

            $this->translationRepository->deleteTranslations(
                $pageId,
                $storeId,
                CmsTranslationRepository::ENTITY_PAGE,
                $defaultFields
            );
            $this->translationRepository->saveTranslations(
                $pageId,
                $storeId,
                CmsTranslationRepository::ENTITY_PAGE,
                $translations
            );
            $this->cacheManager->clean(['full_page', 'block_html']);
            $this->messageManager->addSuccessMessage(__('You saved the page translation.'));
        } catch (\Throwable $exception) {
            $this->messageManager->addErrorMessage(
                __('Something went wrong while saving the page translation: %1', $exception->getMessage())
            );
        }

        return $this->redirectToEdit($pageId, $storeId);
    }

    private function redirectToEdit(int $pageId, int $storeId): Redirect
    {
        return $this->redirectFactory->create()->setPath(
            'cms/page/edit',
            ['page_id' => $pageId, 'store' => $storeId]
        );
    }

    private function redirectToIndex(): Redirect
    {
        return $this->redirectFactory->create()->setPath('cms/page/index');
    }
}