crater/app/Http/Controllers/V1/Customer/EstimatePdfController.php

<?php

namespace Crater\Http\Controllers\V1\Customer;

use Crater\Http\Controllers\Controller;
use Crater\Mail\EstimateViewedMail;
use Crater\Models\CompanySetting;
use Crater\Models\Customer;
use Crater\Models\Estimate;

class EstimatePdfController extends Controller
{
    /**
     * Handle the incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function __invoke(Estimate $estimate)
    {
        if ($estimate && ($estimate->status == Estimate::STATUS_SENT || $estimate->status == Estimate::STATUS_DRAFT)) {
            $estimate->status = Estimate::STATUS_VIEWED;
            $estimate->save();
            $notifyEstimateViewed = CompanySetting::getSetting(
                'notify_estimate_viewed',
                $estimate->company_id
            );

            if ($notifyEstimateViewed == 'YES') {
                $data['estimate'] = Estimate::findOrFail($estimate->id)->toArray();
                $data['user'] = Customer::find($estimate->customer_id)->toArray();
                $notificationEmail = CompanySetting::getSetting(
                    'notification_email',
                    $estimate->company_id
                );

                \Mail::to($notificationEmail)->send(new EstimateViewedMail($data));
            }
        }

        return $estimate->getGeneratedPDFOrStream('estimate');
    }
}