openvk/Web/Models/Entities/Traits/TBackDrops.php

<?php declare(strict_types=1);
namespace openvk\Web\Models\Entities\Traits;

use openvk\Web\Models\Entities\Photo;
use openvk\Web\Models\Repositories\Photos;

trait TBackDrops {
    function getBackDropPictureURLs(): ?array
    {
        $photo1 = $this->getRecord()->backdrop_1;
        $photo2 = $this->getRecord()->backdrop_2;
        if(is_null($photo1) && is_null($photo2))
            return NULL;
        
        $photo1obj = $photo2obj = NULL;
        if(!is_null($photo1))
            $photo1obj = (new Photos)->get($photo1);
        if(!is_null($photo2))
            $photo2obj = (new Photos)->get($photo2);
        
        if(is_null($photo1obj) && is_null($photo2obj))
            return NULL;
        
        return [
            is_null($photo1obj) ? "" : $photo1obj->getURL(),
            is_null($photo2obj) ? "" : $photo2obj->getURL(),
        ];
    }
    
    function setBackDropPictures(?Photo $first, ?Photo $second): void
    {
        if(!is_null($first))
            $this->stateChanges("backdrop_1", $first->getId());
        
        if(!is_null($second))
            $this->stateChanges("backdrop_2", $second->getId());
    }
    
    function unsetBackDropPictures(): void
    {
        $this->stateChanges("backdrop_1", NULL);
        $this->stateChanges("backdrop_2", NULL);
    }
}