<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

/**
 * Delegate payment-related browser features to Paystack Inline iframes.
 *
 * Cross-origin checkout.paystack.com needs the top-level document to allow
 * fullscreen (and payment/clipboard) via Permissions-Policy. Meta tags are
 * not reliably honored — this must be an HTTP response header.
 */
class PaystackPermissionsPolicy
{
    public const HEADER_VALUE = 'payment=*, fullscreen=*, clipboard-read=*, clipboard-write=*, publickey-credentials-get=*';

    public function handle(Request $request, Closure $next): Response
    {
        /** @var Response $response */
        $response = $next($request);

        if (! $response->headers->has('Permissions-Policy')) {
            $response->headers->set('Permissions-Policy', self::HEADER_VALUE);
        }

        return $response;
    }
}