invoiceninja/app/Jobs/Invoice/EmailInvoice.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2019. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Jobs\Invoice;

use App\Events\Invoice\InvoiceWasEmailed;
use App\Events\Invoice\InvoiceWasEmailedAndFailed;
use App\Libraries\MultiDB;
use App\Mail\TemplateEmail;
use App\Models\Company;
use App\Models\Invoice;
use App\Models\SystemLog;
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\Facades\Mail;

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

    public $invoice;

    public $message_array = [];
    
    private $company;

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

        $this->company = $company;
    }

    /**
     * Execute the job.
     *
     *
     * @return void
     */
    public function handle()
    {
        /*Jobs are not multi-db aware, need to set! */
        MultiDB::setDB($this->company->db);

        //todo - change runtime config of mail driver if necessary

        $template_style = $this->invoice->client->getSetting('email_style');
        
        $this->invoice->invitations->each(function ($invitation) use ($template_style) {
            if ($invitation->contact->send_invoice && $invitation->contact->email) {
                $message_array = $this->invoice->getEmailData('', $invitation->contact);
                $message_array['title'] = &$message_array['subject'];
                $message_array['footer'] = "Sent to ".$invitation->contact->present()->name();
                
                //change the runtime config of the mail provider here:
                
                //send message
                Mail::to($invitation->contact->email, $invitation->contact->present()->name())
                ->send(new TemplateEmail($message_array, $template_style, $invitation->contact->user, $invitation->contact->client));

                if (count(Mail::failures()) > 0) {
                    event(new InvoiceWasEmailedAndFailed($this->invoice, Mail::failures()));
                    
                    return $this->logMailError($errors);
                }

                //fire any events
                event(new InvoiceWasEmailed($this->invoice));

                //sleep(5);
            }
        });
    }

    private function logMailError($errors)
    {
        SystemLogger::dispatch(
            $errors,
            SystemLog::CATEGORY_MAIL,
            SystemLog::EVENT_MAIL_SEND,
            SystemLog::TYPE_FAILURE,
            $this->invoice->client
        );
    }
}