HickLab3D_Dashboard/app/Notifications/DashboardAlert.php

<?php

namespace App\Notifications;

use Illuminate\Notifications\Notification;

class DashboardAlert extends Notification
{
    /**
     * @param  'info'|'success'|'warning'|'danger'  $level
     */
    public function __construct(
        public string $kind,
        public string $title,
        public string $body,
        public string $level = 'info',
        public ?string $url = null,
    ) {}

    /**
     * @return array<int, string>
     */
    public function via(object $notifiable): array
    {
        return ['database'];
    }

    /**
     * @return array{kind: string, title: string, body: string, level: string, url: string|null}
     */
    public function toArray(object $notifiable): array
    {
        return ['kind' => $this->kind, 'title' => $this->title, 'body' => $this->body, 'level' => $this->level, 'url' => $this->url];
    }
}