invoiceninja/app/Jobs/Invoice/UpdateReminders.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2022. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license
 */

namespace App\Jobs\Invoice;

use App\Libraries\MultiDB;
use App\Models\Company;
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 UpdateReminders implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public Company $company;

    public function __construct(Company $company)
    {
        $this->company = $company;
    }

    /**
     * Execute the job.
     *
     *
     * @return void
     */
    public function handle()
    {
        MultiDB::setDb($this->company->db);

        $this->company
             ->invoices()
             ->where('is_deleted', 0)
             ->whereIn('status_id', [Invoice::STATUS_SENT, Invoice::STATUS_PARTIAL])
             ->cursor()
             ->each(function ($invoice) {
                 $invoice->service()->setReminder()->save();
             });
    }
}