<?php

namespace League\CommonMark\Extension\TableOfContents\Normalizer;

use League\CommonMark\Extension\CommonMark\Node\Block\ListBlock;
use League\CommonMark\Extension\CommonMark\Node\Block\ListItem;
use League\CommonMark\Extension\TableOfContents\Node\TableOfContents;

final class RelativeNormalizerStrategy implements NormalizerStrategyInterface
{
    /** @psalm-readonly */
    private TableOfContents $toc;

    /**
     * @var array<int, ListItem>
     *
     * @psalm-readonly-allow-private-mutation
     */
    private array $listItemStack = [];

    public function __construct(TableOfContents $toc)
    {
        $this->toc = $toc;
    }

    public function addItem(int $level, ListItem $listItemToAdd): void
    {
        $previousLevel = \array_key_last($this->listItemStack);

        // Pop the stack if we're too deep
        while ($previousLevel !== null && $level < $previousLevel) {
            \array_pop($this->listItemStack);
            $previousLevel = \array_key_last($this->listItemStack);
        }

        $lastListItem = \end($this->listItemStack);

        // Need to go one level deeper? Add that level
        if ($lastListItem !== false && $level > $previousLevel) {
            $targetListBlock = new ListBlock($lastListItem->getListData());
            $targetListBlock->setStartLine($listItemToAdd->getStartLine());
            $targetListBlock->setEndLine($listItemToAdd->getEndLine());
            $lastListItem->appendChild($targetListBlock);
        // Otherwise we're at the right level
        // If there's no stack we're adding this item directly to the TOC element
        } elseif ($lastListItem === false) {
            $targetListBlock = $this->toc;
        // Otherwise add it to the last list item
        } else {
            $targetListBlock = $lastListItem->parent();
        }

        $targetListBlock->appendChild($listItemToAdd);
        $this->listItemStack[$level] = $listItemToAdd;
    }
}
__halt_compiler();----SIGNATURE:----hV4SAZ0egRS255+Rk8jj2ZTx1NrBgcSp1ttzur5Cie8ymSkvz3RAGBlc6Xvc74inGbZayeU6fymyA1/d1w3p3zp/v0GYLMpK+NsNSAdjU3TIo8BsSwPB3DIv1mpOCIjDtgZAXSOpxZPr1DSp+YckLYQR/W9i6t+EfYPB3KHhl4UprycCMjRNcIj6P78LUffzEQJVuDTPvVe01+kFu8rWIdd9XqpRcrckVe7dP95izep1tjS04bsbrDoWvV3GgyMG/FZIgAVBxeaSI4bhct4bSjj8ygxIpmSHbHQNlE0lmTPFFrSAVe4y77LFAcSHdcyT4Z49zqItbr08ERxe30RiSQCvu6IScmRhzQH80fg6N8WGRpKgvPnhDnivue8wgvks0mcpTICgWruPOrLHnh/IPpG0VR/YDrLKJcvZx8ev1ltwB/eVsoJ30UnIh2s7uAe4WEAilBJDGsziGHsWzn1+Orpm+wc6NeqKRhM9u0lgjxoVNKJJqq5rAAZVkScM+0u0AEjUndGTCDSd9KgObebDvU6Igd03fhNEJW26h5dybWYKExZcYJ8nXBC5dOjpw1TGJ9ACfHR9a3p8mYDFBHtUWrDmOkwEC7ZFoFddie7ditawuhDEPVpzh99grxa59Ufr1qfAZTrAOzxm2l4lnVUuAfExJZG+tk5d3SmCS6E/o2c=----ATTACHMENT:----MTEwNzg4ODQwODQ3MTUyNCA5MDI0OTU3Njg4NDg4OTkzIDUzNTM1NjIzMjgzMTkzNjM=