<?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:----OTM1NjI5NjIwMzI1MTIxMCA5MjMxMzY5MTQ2OTQ5NTA2IDE4NzM2ODk5MjQ4OTgxMzA=