Recursive tree style accordion for kirby

Recursive tree style accordion for kirby

<?php if(!isset($subpages)) $subpages = $site->pages();
if(!isset($id)) $id = 0; ?> 

<?php $id+=1;
foreach($site->breadcrumb() AS $crumb): 
   $breadcrumb[] = $crumb->url();
    endforeach ?>
    

<ul id="accordiongroup_<?php 
$in = 0;
echo $id ?>" class="collapse <?php if ($id==1) {$in=1;}?> 

<?php 
foreach ($subpages->visible() AS $sp):
if(in_array($sp->url(), $breadcrumb)) {$in=1;}
endforeach; 
if ($in==1) {echo 'in';}
?>
">


<?php

foreach($subpages->visible() AS $p): ?>

<?php if($p->hasChildren()){?>
<li class="depth-<?php echo $p->depth() ?> parent">
   <a href="#accordiongroup_<?php echo $id+1 ?>" data-toggle="collapse" data-parent="<?php echo $id ?>"> <?php  echo $p->title() ?></a>
<?php snippet('accordionmenu', array('subpages' => $p->children(), 'id' => $id)) ?> 
<?php $id+=1;}
   

 else { ?>
 <li class="depth-<?php echo $p->depth() ?>">
    <div><a class=" <?php echo ($p->isActive()) ? 'active' : '' ?>" href="<?php echo $p->url() ?>"><?php echo $p->title() ?></a></div>
    
<?php }
?>    
  </li>
  <?php endforeach;?>
</ul>