invoiceninja/app/Jobs/Invoice/InvoiceNotification.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Jobs\Invoice;

use App\Models\Invoice;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;

class InvoiceNotification implements ShouldQueue {
	use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

	public $invoice;

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

	/**
	 * Execute the job.
	 *
	 *
	 * @return void
	 */
	public function handle() {

		//notification for the invoice.
		//
		//could mean a email, sms, slack, push
	}
}