<?php

declare(strict_types=1);

/*
 * This file is developed by evoWeb.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 */

namespace Evoweb\EwBloggy\Backend\View;

use Evoweb\EwBloggy\Constants;
use Evoweb\EwBloggy\Domain\Model\Post;
use Evoweb\EwBloggy\Domain\Repository\PostRepository;
use Psr\Http\Message\ServerRequestInterface;
use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
use TYPO3\CMS\Core\Type\Bitmask\Permission;
use TYPO3\CMS\Core\View\ViewFactoryData;
use TYPO3\CMS\Core\View\ViewFactoryInterface;
use TYPO3\CMS\Fluid\View\FluidViewAdapter;

readonly class PostHeaderRenderer
{
    public function __construct(
        private ViewFactoryInterface $viewFactory,
        private PostRepository $postRepository,
    ) {
    }

    public function render(ServerRequestInterface $request): string
    {
        $pageUid = (int)($request->getParsedBody()['id'] ?? $request->getQueryParams()['id'] ?? 0);
        $pageInfo = $this->getPageRecord($pageUid);
        if ($pageInfo === null || $pageInfo['doktype'] !== Constants::DOKTYPE_BLOG_POST) {
            return '';
        }

        $post = $this->getPostByUid($pageUid);
        $view = $this->getView($request);
        $view->assign('post', $post);

        return $view->render();
    }

    protected function getPostByUid(int $pageUid): Post
    {
        $query = $this->postRepository->createQuery();
        $querySettings = $query->getQuerySettings();
        $querySettings->setIgnoreEnableFields(true);
        $querySettings->setRespectStoragePage(false);
        $this->postRepository->setDefaultQuerySettings($querySettings);
        return $this->postRepository->findOneBy(['uid' => $pageUid]);
    }

    protected function getPageRecord(int $pageUid): ?array
    {
        $pagePermsClause = $this->getBackendUser()?->getPagePermsClause(Permission::PAGE_SHOW) ?? '';
        return BackendUtility::getRecord('pages', $pageUid, 'doktype', $pagePermsClause);
    }

    protected function getView(ServerRequestInterface $request): FluidViewAdapter
    {
        $viewFactoryData = new ViewFactoryData(
            ['EXT:ew_bloggy/Resources/Private/Templates'],
            ['EXT:ew_bloggy/Resources/Private/Partials'],
            ['EXT:ew_bloggy/Resources/Private/Layouts'],
            request: $request,
        );
        /** @var FluidViewAdapter $view */
        $view = $this->viewFactory->create($viewFactoryData);
        $view->getRenderingContext()->setControllerName('PageLayout');
        $view->getRenderingContext()->setControllerAction('Header');
        return $view;
    }

    protected function getBackendUser(): ?BackendUserAuthentication
    {
        return $GLOBALS['BE_USER'] ?? null;
    }
}