/**
* Looper function that traverses all possible trails
*
* @param App\Note $note The current note (also a node)
* @param boolean $isRoot Only given for the "start" note in index function
*
* @return Illuminate\Support\Collection A collection of all notes found
*/
public function getTrails($note, $isRoot = false)
{
$nextNotes = $note->next();
if (count($nextNotes) > 0) {
if ($isRoot) {
$nr = [];
} else {
$nr = new Collection();
}
foreach ($nextNotes as $next) {
if ($isRoot) {
$nr[] = $this->getTrails($next)->prepend($note->id);
} else {
$nr = $nr->merge($this->getTrails($next)->prepend($note->id));
}
}
return $nr;
} else {
return new Collection($note->id);
}
}
