autocde2.0/app/Models/Enums/AssetStatus.php

<?php

namespace App\Models\Enums;

enum AssetStatus: string
{
    case CONCEPT = 'concept';

    case DESIGN = 'design';

    case CONSTRUCTION = 'construction';

    case OPERATE = 'operate';

    case DESTROY = 'destroy';

    case SELLING = 'selling';

}