<?php

namespace App\Filters;

use CodeIgniter\Filters\FilterInterface;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;

class AuthFilter 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)
    {
        $session = session();

        // 1. Cek apakah user sudah login
        if (!$session->get('isLoggedIn')) {
            return redirect()->to('/login')->with('error', 'Silakan login terlebih dahulu.');
        }

        // 2. Cek kecocokan role jika $arguments diberikan di Routes
        if ($arguments) {
            $userRole = $session->get('role');
            
            // Jika role user saat ini tidak ada di dalam array $arguments (role yang diizinkan)
            if (!in_array($userRole, $arguments)) {
                // Tolak akses, arahkan kembali ke dashboard masing-masing atau beri pesan error
                return redirect()->back()->with('error', 'Anda tidak memiliki akses ke halaman ini.');
            }
        }
    }

    /**
     * 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)
    {
        //
    }
}
