invoiceninja/app/Jobs/Util/ReminderJob.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license
 */

namespace App\Jobs\Util;

use App\Events\Invoice\InvoiceWasEmailed;
use App\Jobs\Entity\EmailEntity;
use App\Libraries\MultiDB;
use App\Models\Invoice;
use App\Utils\Ninja;
use App\Utils\Traits\MakesReminders;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Carbon;

class ReminderJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels, MakesReminders;

    public function __construct()
    {
    }

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

        if (! config('ninja.db.multi_db_enabled')) {
            $this->processReminders();
        } else {
            //multiDB environment, need to
            foreach (MultiDB::$dbs as $db) {
                MultiDB::setDB($db);
                $this->processReminders();
            }
        }
    }

    private function processReminders()
    {
        nlog("Sending invoice reminders " . now()->format('Y-m-d h:i:s'));

        Invoice::where('next_send_date', '<=', now()->toDateTimeString())
                 ->where('is_deleted', 0)
                 ->whereIn('status_id', [Invoice::STATUS_SENT, Invoice::STATUS_PARTIAL])
                 ->where('balance', '>', 0)
                 ->with('invitations')->cursor()->each(function ($invoice) {

            if ($invoice->isPayable()) {
                $reminder_template = $invoice->calculateTemplate('invoice');
                $invoice->service()->touchReminder($reminder_template)->save();

                $invoice->invitations->each(function ($invitation) use ($invoice, $reminder_template) {
                    EmailEntity::dispatch($invitation, $invitation->company, $reminder_template);
                    nlog("Firing reminder email for invoice {$invoice->number}");
                });

                if ($invoice->invitations->count() > 0) {
                    event(new InvoiceWasEmailed($invoice->invitations->first(), $invoice->company, Ninja::eventVars(), $reminder_template));
                }

                $invoice->service()->setReminder()->save();
                
            } else {
                $invoice->next_send_date = null;
                $invoice->save();
            }

        });
    }
}