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Editing File: /home/assersoft/public_html/audiogramnew/app/Filters/IsAdmin.php

<?php

namespace App\Filters;

require_once APPPATH . 'Helpers/TokenGenerator.php';

use CodeIgniter\Filters\FilterInterface;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;
use Config\Services;
use TokenGenerator;

class IsAdmin implements FilterInterface
{
    /**
     * Do whatever processing this filter needs to do.
     * By default it should not return anything during
     * normal execution. However, when an abnormal state
     * is found, it should return an instance of
     * CodeIgniter\HTTP\Response. If it does, script
     * execution will end and that Response will be
     * sent back to the client, allowing for error pages,
     * redirects, etc.
     *
     * @param RequestInterface $request
     * @param array|null       $arguments
     *
     * @return RequestInterface|ResponseInterface|string|void
     */
    public function before(RequestInterface $request, $arguments = null)
    {
        $token = $_COOKIE['token'] ?? null;

if (!$token) {
            return Services::response()
                ->setJSON(['message' => 'Unauthorized - Please log in.'])
                ->setStatusCode(401);
        }

$decoded = TokenGenerator::verify($token);

if (!$decoded) {
            return Services::response()
                ->setJSON(['message' => 'Unauthorized - Invalid token.'])
                ->setStatusCode(401);
        }

if (!isset($decoded['usertype']) || $decoded['usertype'] !== 'admin') {
            return Services::response()
                ->setJSON(['message' => 'Forbidden - You do not have permission to access this resource.'])
                ->setStatusCode(403);
        }
        return;
    }

/**
     * Allows After filters to inspect and modify the response
     * object as needed. This method does not allow any way
     * to stop execution of other after filters, short of
     * throwing an Exception or Error.
     *
     * @param RequestInterface  $request
     * @param ResponseInterface $response
     * @param array|null        $arguments
     *
     * @return ResponseInterface|void
     */
    public function after(RequestInterface $request, ResponseInterface $response, $arguments = null)
    {
        //
    }
}

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