photo/app/Jobs/CatalogVerify.php

<?php

namespace App\Jobs;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Support\Facades\Log;

use App\Traits\Type;

class CatalogVerify extends Job implements ShouldQueue
{
	use Dispatchable, Queueable, InteractsWithQueue, SerializesModels, Type;

	// What we should verify
	private $type = NULL;

	/**
	 * Create a new job instance.
	 *
	 * @return void
	 */
	public function __construct(string $type) {
		$this->type = $type;
	}

	/**
	 * Execute the job.
	 *
	 * @return void
	 */
	public function handle()
	{
		Log::info(sprintf('%s: Scanning [%s]',__METHOD__,$this->type));

		// Go through DB and verify files exist
		$class = $this->getModelType($this->type);

		$good = $bad = $ugly = 0;

		$class::select('*')->each(function($o) use ($good,$bad,$ugly) {
			if (! file_exists($o->file_name(FALSE))) {
				Log::error(sprintf('Media doesnt exist: [%s] (%d:%s)',$this->type,$o->id,$o->file_name(FALSE)));
				$bad++;
				return;
			}

			if (($x=md5_file($o->file_name(FALSE))) !== $o->file_signature) {
				Log::error(sprintf('Media MD5 doesnt match DB: [%s] (%d:%s) [%s:%s]',$this->type,$o->id,$o->file_name(FALSE),$x,$o->file_signature));
				$ugly++;
				return;
			}

			$good++;
		});

		Log::info('DB Media Verify Complete: [%s] Good: [%d], Missing: [%d], Changed: [%d]',$this->type,$good,$bad,$ugly);

		// Go through filesystem and see that a record exists in the DB, if not add it.
	}
}