osb/app/Http/Controllers/InvoiceController.php

<?php

namespace App\Http\Controllers;

use Clarkeash\Doorman\Exceptions\{ExpiredInviteCode,InvalidInviteCode,NotYourInviteCode};
use Clarkeash\Doorman\Facades\Doorman;
use Illuminate\View\View;
use Barryvdh\Snappy\Facades\SnappyPdf as PDF;

use App\Models\Invoice;

/**
 * Class InvoiceController
 * This controller manages invoices
 *
 * The methods to this controller should be projected by the route
 *
 * @package App\Http\Controllers
 */
class InvoiceController extends Controller
{
	/**
	 * Return the invoice in PDF format, ready to download
	 *
	 * @param Invoice $o
	 * @return mixed
	 */
	public function pdf(Invoice $o)
	{
		return PDF::loadView('theme.backend.adminlte.u.invoice.home',['o'=>$o])
			->stream(sprintf('%s.pdf',$o->sid));
	}

	/**
	 * Render a specific invoice for the user
	 *
	 * @param Invoice $o
	 * @param string|null $code
	 * @return View
	 */
	public function view(Invoice $o,string $code=NULL): View
	{
		if ($code) {
			try {
				Doorman::redeem($code,$o->account->user->email);

			} catch (ExpiredInviteCode|InvalidInviteCode|NotYourInviteCode $e) {
				abort(404);
			}
		}

		return view('theme.backend.adminlte.invoice.view')
			->with('o',$o);
	}
}