excludeddatecomparemanager.php

<?php
 
namespace Bitrix\Calendar\Core\Event\Tools;
 
use Bitrix\Calendar\Core\Base\Date;
use Bitrix\Calendar\Core\Event\Properties\ExcludedDatesCollection;
 
class ExcludedDateCompareManager
{
    protected $originalCollection;
    protected $currentCollection;
    protected $isEqual = true;
    protected $diff = [];
 
    public static function createInstance(?ExcludedDatesCollection $originalCollection, ?ExcludedDatesCollection $currentCollection): ExcludedDateCompareManager
    {
        return new self($originalCollection, $currentCollection);
    }
 
    public function __construct(?ExcludedDatesCollection $originalCollection, ?ExcludedDatesCollection $currentCollection)
    {
        $this->originalCollection = $originalCollection;
        $this->currentCollection = $currentCollection;
    }
 
    public function compare(): ExcludedDateCompareManager
    {
        $this->diff = array_udiff(
            $this->currentCollection->getCollection(),
            $this->originalCollection->getCollection(),
            [$this, 'compareHandler']
        );
 
        if (
            $this->diff
            || $this->originalCollection->count() !== $this->currentCollection->count()
        )
        {
            $this->isEqual = false;
        }
 
        return $this;
    }
 
    public function getDiffCollection(): ExcludedDatesCollection
    {
        return new ExcludedDatesCollection($this->diff);
    }
 
    public function isEqual(): bool
    {
        return $this->isEqual;
    }
 
    public function hasDiff(): bool
    {
        return (bool)$this->diff;
    }
 
    private function compareHandler(Date $current, Date $original): int
    {
        return $current->getTimestamp() <=> $original->getTimestamp();
    }
}