strprfcrm/app/Models/Setting.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Setting extends Model
{
    public const KEY_DEFAULT_MAF_ORDER_USER_ID = 'default_maf_order_user_id';
    public const KEY_RECLAMATION_ACT_REPRESENTATIVE_USER_ID = 'reclamation_act_representative_user_id';
    public const KEY_TTN_NEXT_NUMBER = 'ttn_next_number';

    protected $fillable = [
        'key',
        'value',
    ];

    public static function get(string $key, mixed $default = null): mixed
    {
        $value = static::query()->where('key', $key)->value('value');

        return $value ?? $default;
    }

    public static function getInt(string $key, ?int $default = null): ?int
    {
        $value = static::get($key, $default);

        if ($value === null || $value === '') {
            return $default;
        }

        return (int) $value;
    }

    public static function set(string $key, mixed $value): void
    {
        static::query()->updateOrCreate(
            ['key' => $key],
            ['value' => $value === null ? null : (string) $value]
        );
    }
}