speedtest-tracker/app/Telegram/TelegramNotification.php

<?php

namespace App\Telegram;

use Illuminate\Bus\Queueable;
use Illuminate\Notifications\Notification;
use NotificationChannels\Telegram\TelegramMessage;

class TelegramNotification extends Notification
{
    use Queueable;

    protected $message;

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

    /**
     * Get the notification's delivery channels.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function via($notifiable)
    {
        return ['telegram'];
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\MailMessage
     */
    public function toTelegram($notifiable)
    {
        return TelegramMessage::create()
            ->to($notifiable->routes['telegram_chat_id'])
            ->content($this->message);
    }
}