SwitcherCollection.php

<?php
 
namespace Bitrix\Socialnetwork\Space\Toolbar\Switcher;
 
use ArrayIterator;
use IteratorAggregate;
 
class SwitcherCollection implements IteratorAggregate
{
    private array $items = [];
 
    public function getIterator(): ArrayIterator
    {
        return new ArrayIterator($this->items);
    }
 
    public function has(AbstractSwitcher $switcher): bool
    {
        return !empty(array_filter(
            $this->items,
            fn (AbstractSwitcher $item): bool =>
                $this->isEquals($item, $switcher)
        ));
    }
 
    public function add(AbstractSwitcher $switcher): static
    {
        if ($this->has($switcher))
        {
            return $this;
        }
 
        $this->items[] = $switcher;
        return $this;
    }
 
    public function remove(AbstractSwitcher $switcher): static
    {
        if (!$this->has($switcher))
        {
            return $this;
        }
 
        foreach ($this->items as $key => $item)
        {
            if ($this->isEquals($item, $switcher))
            {
                unset($this->items[$key]);
            }
        }
 
        return $this;
    }
 
    private function isEquals(AbstractSwitcher $a, AbstractSwitcher $b): bool
    {
        return $a::class === $b::class
            && $a->getUserId() === $b->getUserId()
            && $a->getSpaceId() === $b->getSpaceId()
            && $a->getCode() === $b->getCode();
    }
}