<?php

namespace App\Service;

use App\Entity\Article;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use App\Repository\ArticleRepository;
use Laminas\Feed\Writer\Entry;
use Laminas\Feed\Writer\Feed;
use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
use Symfony\Component\Routing\RouterInterface;

class FeedService
{
    public const ATOM = 'atom';
    public const RSS = 'rss';

    public function __construct(
        protected ArticleRepository $articleRepository,
        protected UrlGeneratorInterface $router,
        protected MarkdownParser $markdownParser,
        protected ParameterBagInterface $parameterBagInterface
    )
    {

    }

    public function createFeed(array $articles, \DateTimeImmutable $updatedAt, string $type = self::RSS): string
    {
        $feed = new Feed();
        $feed->setTitle($this->parameterBagInterface->get('title'));
        $feed->setLink($this->router->generate('app_index', [], RouterInterface::ABSOLUTE_URL));
        $feed->setFeedLink($this->router->generate('app_feed', ['type' => $type], RouterInterface::ABSOLUTE_URL), $type);
        $feed->setDescription('Derniers articles du blog');
        $feed->setLanguage('fr');
        $feed->setDateModified($updatedAt);

        foreach($this->getItems($articles) as $item) {
            $feed->addEntry($item);
        }
        return $feed->export($type);
    }

    public function getItems($articles): \Iterator
    {
        foreach($articles as $article) {
            /** @var Article $article */
            $item = new Entry();
            $item
                ->setTitle($article->getTitle())
                ->setLink($this->router->generate('app_view', ['slug' => $article->getSlug()], RouterInterface::ABSOLUTE_URL))
                ->setDateCreated($article->getPublicationDate())
                ->setDateModified($item->getDateCreated())
                ->addAuthor(['name' => (string) $article->getAuthor()])
            ;
            $tags = $article->getTags();
            foreach($tags as $tag) {
                $item->addCategory([
                    'term' => (string) $tag->getName(),
                    'scheme' => $this->router->generate('app_search', ['tag' => $tag->getName()], RouterInterface::ABSOLUTE_URL)
                ]);
            }

            # Fix pour supprimer le allowfullscreen récupéré par l'extension embed pour youtube
            $content = $this->markdownParser->convertToHtml($article->getContent());
            $content = str_replace('allowfullscreen', 'allowfullscreen="true"', $content);
            $item->setContent($content);
            ;
            yield $item;
        }
    }
}