<?php

declare(strict_types=1);

namespace Esun\MultiLocaleTranslation\Model;

use Esun\Wiki\Model\Category;
use Esun\Wiki\Model\Homepage;
use Magento\Framework\App\State;
use Magento\Framework\Exception\LocalizedException;
use Magento\Store\Model\StoreManagerInterface;

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

    public function apply(Category $entity): void
    {
        if (!$this->isFrontend() || !$entity->getId()) {
            return;
        }
        $storeId = (int)$this->storeManager->getStore()->getId();
        if ($storeId <= 0) {
            return;
        }

        $isHomepage = $entity instanceof Homepage;
        $translations = $this->translationRepository->getTranslations(
            (int)$entity->getId(),
            $storeId,
            $isHomepage
                ? CmsTranslationRepository::ENTITY_WIKI_HOMEPAGE
                : CmsTranslationRepository::ENTITY_WIKI_CATEGORY,
            $isHomepage ? WikiFields::homepageCodes() : WikiFields::categoryCodes()
        );
        $this->applyValues($entity, $translations);
    }

    /** @param Category[] $entities */
    public function applyMany(array $entities, bool $homepage = false): void
    {
        if (!$this->isFrontend() || $entities === []) {
            return;
        }
        $storeId = (int)$this->storeManager->getStore()->getId();
        if ($storeId <= 0) {
            return;
        }

        $entityIds = [];
        foreach ($entities as $entity) {
            if ($entity instanceof Category && $entity->getId()) {
                $entityIds[] = (int)$entity->getId();
            }
        }
        $translations = $this->translationRepository->getTranslationsForEntities(
            $entityIds,
            $storeId,
            $homepage
                ? CmsTranslationRepository::ENTITY_WIKI_HOMEPAGE
                : CmsTranslationRepository::ENTITY_WIKI_CATEGORY,
            $homepage ? WikiFields::homepageCodes() : WikiFields::categoryCodes()
        );
        foreach ($entities as $entity) {
            if ($entity instanceof Category && $entity->getId()) {
                $this->applyValues($entity, $translations[(int)$entity->getId()] ?? []);
            }
        }
    }

    private function applyValues(Category $entity, array $translations): void
    {
        foreach ($translations as $field => $value) {
            $entity->setData($field, $value);
        }
    }

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