ItemState

 1<?php ...
 2 
 3namespace Thunk\Verbs\Examples\Cart\States;
 4 
 5use Thunk\Verbs\State; 
 6 
 7class ItemState extends State
 8{
 9    public int $quantity = 0;
10 
11    public array $holds = [];
12 
13    public function available(): int
14    {
15        return $this->quantity - $this->activeHoldCount();
16    }
17 
18    public function activeHolds(): array
19    {
20        return $this->holds = array_filter($this->holds, fn ($hold) => $hold['expires'] > now()->unix());
21    }
22 
23    protected function activeHoldCount(): mixed
24    {
25        return collect($this->activeHolds())->sum('quantity');
26    }
27}