crater/app/Http/Controllers/V1/Admin/Payment/SendPaymentPreviewController.php

<?php

namespace Crater\Http\Controllers\V1\Admin\Payment;

use Crater\Http\Controllers\Controller;
use Crater\Models\Payment;
use Illuminate\Http\Request;
use Illuminate\Mail\Markdown;

class SendPaymentPreviewController extends Controller
{
    /**
     * Handle the incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function __invoke(Request $request, Payment $payment)
    {
        $this->authorize('send payment', $payment);

        $markdown = new Markdown(view(), config('mail.markdown'));

        return $markdown->render('emails.send.payment', ['data' => $payment->sendPaymentData($request->all())]);
    }
}