<?php

namespace League\CommonMark\Extension\Embed;

use League\CommonMark\Event\DocumentParsedEvent;
use League\CommonMark\Extension\CommonMark\Node\Inline\Link;
use League\CommonMark\Node\Block\Paragraph;
use League\CommonMark\Node\Inline\Text;
use League\CommonMark\Node\NodeIterator;

final class EmbedProcessor
{
    public const FALLBACK_REMOVE = 'remove';
    public const FALLBACK_LINK = 'link';

    private EmbedAdapterInterface $adapter;
    private string $fallback;

    public function __construct(EmbedAdapterInterface $adapter, string $fallback = self::FALLBACK_REMOVE)
    {
        $this->adapter  = $adapter;
        $this->fallback = $fallback;
    }

    public function __invoke(DocumentParsedEvent $event): void
    {
        $document = $event->getDocument();
        $embeds   = [];
        foreach (new NodeIterator($document) as $node) {
            if (! ($node instanceof Embed)) {
                continue;
            }

            if ($node->parent() !== $document) {
                $replacement = new Paragraph();
                $replacement->appendChild(new Text($node->getUrl()));
                $node->replaceWith($replacement);
            } else {
                $embeds[] = $node;
            }
        }

        $this->adapter->updateEmbeds($embeds);

        foreach ($embeds as $embed) {
            if ($embed->getEmbedCode() !== null) {
                continue;
            }

            if ($this->fallback === self::FALLBACK_REMOVE) {
                $embed->detach();
            } elseif ($this->fallback === self::FALLBACK_LINK) {
                $paragraph = new Paragraph();
                $paragraph->appendChild(new Link($embed->getUrl(), $embed->getUrl()));
                $embed->replaceWith($paragraph);
            }
        }
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NDExMzc0NzA1MDAxODIzMiA2Mjg2NDQ4NTIzMjE4OTg1IDM1MzUyOTk1MTc3ODQzNDU=