Cache Asset Url

CacheAssetUrl.php

<?php namespace Union\Events\OnSaveEntry;

use Craft\EntryModel;
use Craft\ElementType;

use function Craft\craft;

class PhotoAlbumsListener
{
    protected $entry;

    public function __construct(EntryModel $entry)
    {
        $this->entry = $entry;
    }

    public function shouldHandleEvent()
    {
        return true;
    }

    public function handleEvent()
    {
        if(CRAFT_ENVIRONMENT !== 'console' && empty($this->entry->referenceId)) {

            // don't save in console and don't save imported photos which were already watermarked
            union('service.util.watermark')->saveWatermarkedPhotos($this->entry);
        }

        $this->updateAlbumCache();
    }

    protected function updateAlbumCache()
    {
        // get cover photo asset
        $criteria = craft()->elements->getCriteria(ElementType::Asset);

        $criteria->id = $this->entry->getContent()->photos;
        $criteria->order = '(isCoverPhoto = 1) DESC';
        $criteria->limit = 1;

        $coverPhoto = $criteria->first();

        // cache cover photo url
        $cache = json_decode($this->entry->unionCache);

        if(! $cache) {

            $cache = (object) [];
        }

        if(isset($cache->coverPhotoUrl)) {

            unset($cache->coverPhotoUrl);
        }

        if($coverPhoto) {

            // get current transform setting so we can set it back when we're done
            $initialTransformsSetting = craft()->config->get('generateTransformsBeforePageLoad');

            // force transform
            // craft()->config->set('generateTransformsBeforePageLoad', true);
            $coverPhotoUrl = $coverPhoto->getUrl('gridCover');

            $cache->coverPhoto = (object) [
                'url' => $coverPhotoUrl,
                'height' => $coverPhoto->height,
                'width' => $coverPhoto->width,
                'id' => $coverPhoto->id,
                'sourceId' => $coverPhoto->sourceId,
                'folderId' => $coverPhoto->folderId,
                'size' => $coverPhoto->size,
            ];

            // reset transform setting
            craft()->config->set('generateTransformsBeforePageLoad', $initialTransformsSetting);

            // update field outside of craft so we don't trigger endless loop of save events
            craft()->db->createCommand()->update('content',
                [
                    'field_unionCache' => json_encode($cache),
                ],
                ['elementId' => $this->entry->id]
            );
        }
    }
}