Laravel schedule push notification and cancel it if necessary - laravel

Question

In my app with Laravel on back-end users can send messages to each other.
I want to send push notification to app users on new inbox message, but I need to send messages only if user hadn't already read this message.
So I see it that way
On every message sended I need to schedule Laravel notification after 1 minute
if user already received this message I need to cancel this notification
How can dismiss scheduled notification in Laravel? Is this approach fine and actual now?
Class extends Notification
public function via($notifiable)
{
if($this->dontSend($notifiable)) {
return [];
}
return ['mail'];
}
public function dontSend($notifiable)
{
return $this->appointment->status === 'cancelled';
}
Maybe there is more convenient way to handle it? For example, to send push every time but somehow dismiss it showing from app if it's already launched?

Answer 1

One way to do it would be something like this;
Before you trigger your notification create a unique identifier(sha1 could be an option) with the combination of user_id. Let's say it is SgiA7EfBQBFQK3pjRWtaxB1CkSf7gf4lSixvei3jU3ydHJ39ZGjhhdUUCnHRno3C. Send it to the notification. Both notification and message will be send at the same time, but notification will have one minute delay.
$identifier = Str::random(64);
$delay = now()->addMinute();
$user->notify((new MyNotification($identifier))->delay($delay));
// send a request that contains identifier.
You set this to the Redis with TTL of 2 minutes. It will be gone if there is no action.
Redis::set('SgiA7EfBQBFQK3pjRWtaxB1CkSf7gf4lSixvei3jU3ydHJ39ZGjhhdUUCnHRno3C', 1, 120);
While sending a message to the user, attach this identifier to the message. When user read that message, you make a request to your /read endpoint with all the parameters + the identifier.
When you receive the request, delete the key from Redis. (user received the message)
Redis::del('SgiA7EfBQBFQK3pjRWtaxB1CkSf7gf4lSixvei3jU3ydHJ39ZGjhhdUUCnHRno3C');
In your Notification class, implement a small method to check whether the key exists in Redis.
Redis::exists('SgiA7EfBQBFQK3pjRWtaxB1CkSf7gf4lSixvei3jU3ydHJ39ZGjhhdUUCnHRno3C');
class MyNotification extends BaseNotification
{
use Queueable;
private $identifier;
public function __construct($identifier)
{
$this->identifier = $identifier;
}
public function via()
{
return $this->isValid() ? ['mail'] : [];
}
public function isValid()
{
return Redis::exists($this->identifier);
}
public function toMail()
{
// details..
}
}
It doesn't have to be Redis but it is a perfect match for these kind of key/value structure.