<?php

namespace League\CommonMark\Extension\Footnote\Event;

use League\CommonMark\Event\DocumentParsedEvent;
use League\CommonMark\Extension\Footnote\Node\FootnoteRef;
use League\CommonMark\Reference\Reference;

final class NumberFootnotesListener
{
    public function onDocumentParsed(DocumentParsedEvent $event): void
    {
        $document     = $event->getDocument();
        $nextCounter  = 1;
        $usedLabels   = [];
        $usedCounters = [];

        foreach ($document->iterator() as $node) {
            if (! $node instanceof FootnoteRef) {
                continue;
            }

            $existingReference   = $node->getReference();
            $label               = $existingReference->getLabel();
            $counter             = $nextCounter;
            $canIncrementCounter = true;

            if (\array_key_exists($label, $usedLabels)) {
                /*
                 * Reference is used again, we need to point
                 * to the same footnote. But with a different ID
                 */
                $counter             = $usedCounters[$label];
                $label              .= '__' . ++$usedLabels[$label];
                $canIncrementCounter = false;
            }

            // rewrite reference title to use a numeric link
            $newReference = new Reference(
                $label,
                $existingReference->getDestination(),
                (string) $counter
            );

            // Override reference with numeric link
            $node->setReference($newReference);
            $document->getReferenceMap()->add($newReference);

            /*
             * Store created references in document for
             * creating FootnoteBackrefs
             */
            $document->data->append($existingReference->getDestination(), $newReference);

            $usedLabels[$label]   = 1;
            $usedCounters[$label] = $nextCounter;

            if ($canIncrementCounter) {
                $nextCounter++;
            }
        }
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----OTM0NjMwNTU1MzY5MjQyNSA0MTE2MTYxMzE1MDYzODU0IDU4ODQ1OTk0MTY3MDU1MTg=