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Filename : cookie_helper.php
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<?php

/**
 * This file is part of CodeIgniter 4 framework.
 *
 * (c) CodeIgniter Foundation <admin@codeigniter.com>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

use Config\App;
use Config\Cookie;
use Config\Services;

// =============================================================================
// CodeIgniter Cookie Helpers
// =============================================================================

if (! function_exists('set_cookie')) {
    /**
     * Set cookie
     *
     * Accepts seven parameters, or you can submit an associative
     * array in the first parameter containing all the values.
     *
     * @param array|string $name     Cookie name or array containing binds
     * @param string       $value    The value of the cookie
     * @param string       $expire   The number of seconds until expiration
     * @param string       $domain   For site-wide cookie. Usually: .yourdomain.com
     * @param string       $path     The cookie path
     * @param string       $prefix   The cookie prefix ('': the default prefix)
     * @param bool|null    $secure   True makes the cookie secure
     * @param bool|null    $httpOnly True makes the cookie accessible via http(s) only (no javascript)
     * @param string|null  $sameSite The cookie SameSite value
     *
     * @see \CodeIgniter\HTTP\Response::setCookie()
     */
    function set_cookie(
        $name,
        string $value = '',
        string $expire = '',
        string $domain = '',
        string $path = '/',
        string $prefix = '',
        ?bool $secure = null,
        ?bool $httpOnly = null,
        ?string $sameSite = null
    ) {
        $response = Services::response();
        $response->setCookie($name, $value, $expire, $domain, $path, $prefix, $secure, $httpOnly, $sameSite);
    }
}

if (! function_exists('get_cookie')) {
    /**
     * Fetch an item from the $_COOKIE array
     *
     * @param string      $index
     * @param string|null $prefix Cookie name prefix.
     *                            '': the prefix in Config\Cookie
     *                            null: no prefix
     *
     * @return array|string|null
     *
     * @see \CodeIgniter\HTTP\IncomingRequest::getCookie()
     */
    function get_cookie($index, bool $xssClean = false, ?string $prefix = '')
    {
        if ($prefix === '') {
            /** @var Cookie|null $cookie */
            $cookie = config('Cookie');

            // @TODO Remove Config\App fallback when deprecated `App` members are removed.
            $prefix = $cookie instanceof Cookie ? $cookie->prefix : config('App')->cookiePrefix;
        }

        $request = Services::request();
        $filter  = $xssClean ? FILTER_SANITIZE_FULL_SPECIAL_CHARS : FILTER_DEFAULT;

        return $request->getCookie($prefix . $index, $filter);
    }
}

if (! function_exists('delete_cookie')) {
    /**
     * Delete a cookie
     *
     * @param mixed  $name
     * @param string $domain the cookie domain. Usually: .yourdomain.com
     * @param string $path   the cookie path
     * @param string $prefix the cookie prefix
     *
     * @see \CodeIgniter\HTTP\Response::deleteCookie()
     */
    function delete_cookie($name, string $domain = '', string $path = '/', string $prefix = '')
    {
        Services::response()->deleteCookie($name, $domain, $path, $prefix);
    }
}

if (! function_exists('has_cookie')) {
    /**
     * Checks if a cookie exists by name.
     */
    function has_cookie(string $name, ?string $value = null, string $prefix = ''): bool
    {
        return Services::response()->hasCookie($name, $value, $prefix);
    }
}