<?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:----NjMzNTEzMDI3NTgwMTc5OSAyMDc1ODIwMjU2NTQ5MDE1IDU4MDE1NjI3MzAxOTY1ODc=