Simple laravel flash message

Flash.php

<?php
 
namespace App\Support\Flash;
 
use Illuminate\Contracts\Session\Session;
use Illuminate\Support\Arr;
use Illuminate\Support\Traits\Macroable;
 
class Flash
{
    use Macroable;
 
    /**
     * The session key name.
     *
     * @var string
     */
    public static $sessionKey = '_flash_message';
 
    /**
     * The session instance.
     *
     * @var \Illuminate\Contracts\Session\Session
     */
    protected $session;
 
    /**
     * Create new flash instance.
     *
     * @param  \Illuminate\Contracts\Session\Session $session
     * @return void
     */
    public function __construct(Session $session)
    {
        $this->session = $session;
    }
 
    /**
     * Get the message attribute.
     *
     * @param  string $name
     * @return mixed
     */
    public function __get(string $name)
    {
        return optional($this->message())->$name;
    }
 
    /**
     * Get the flash message.
     *
     * @return \App\Support\Flash\Message|null
     */
    public function message(): ?Message
    {
        $message = $this->session->get(static::$sessionKey);
 
        return $message ? new Message($message) : null;
    }
 
    /**
     * Flash the message.
     *
     * @param  \App\Support\Flash\Message $message
     * @return void
     */
    public function flash(Message $message): void
    {
        $this->session->flash(static::$sessionKey, $message->toArray());
    }
 
    /**
     * Register flash level.
     *
     * @param  array $options
     * @return void
     */
    public static function levels(array $options): void
    {
        foreach ($options as $level => $data) {
            static::macro($level, function (string $message, array $extra = []) use ($level, $data) {
                $data = array_merge(Arr::wrap($data), $extra);
 
                return $this->flash(Message::make($message, $data, $level));
            });
        }
    }
}

helpers.php

<?php

use App\Support\Flash\Flash;
use App\Support\Flash\Message;

if (! function_exists('flash')) {
    /**
     * Set the page title.
     *
     * @param  string $title
     * @param  string $delimiter
     * @return string
     */
    function flash(?string $message = null, array $data = []): Flash
    {
        $flash = app(Flash::class);
 
        if ($message) {
            $flash->flash(Message::make($message, $data));
        }
 
        return $flash;
    }
}

Message.php

<?php
 
namespace App\Support\Flash;
 
use Illuminate\Support\Fluent;
 
class Message extends Fluent
{
    /**
     * Create new message instance.
     *
     * @param  string $message
     * @param  array $data
     * @param  string|null $level
     * @return self
     */
    public static function make(string $message, array $data = [], ?string $level = null)
    {
        $data['message'] = $message;
        $data['level'] = $level;
 
        return new static($data);
    }
}