<?PHP
/**
 * This file contains all the main functions for the backend.
 *
 * @file
 *
 * @author Joshua Ramon Enslin <joshua@jrenslin.de>
 */

// Include functions from frontend.

require_once __DIR__ . '/../../inc/functions.php';
require_once __DIR__ . '/standardHTML.php';

/**
 * Function for ensuring everything is in order in the backend.
 *
 * @return void
 */
function ensureBackendEnv() {

    if (session_status() != PHP_SESSION_ACTIVE) {
        session_start();
    }

    include_once __DIR__ . "/../password_protect.php";

}

/**
 * Function that checks all the indexes in the input array for their availability in $_GET or $_POST.
 * If they exist in either, they are written to global variables.
 *
 * @param string[] $vars Input array containing indices, that may be contained in $_GET or $_POST.
 *
 * @return void
 */
function loadHttpToGlobals(array $vars) {

    foreach ($vars as $var) {
        if (isset($_GET[$var])) $GLOBALS[$var] = $_GET[$var];
        else if (isset($_POST[$var])) $GLOBALS[$var] = $_POST[$var];
    }

}

/**
 * Function for loading the language.
 *
 * @return string[]
 */
function loadLanguage():array {

    if (isset($_GET['lan'])) $_SESSION['lan'] = $lan = $_GET['lan'];
    else if (isset($_SESSION['lan'])) $lan = $_SESSION['lan'];

    // Default to English
    if (!isset($lan) or !file_exists(__DIR__ . "/translations/$lan.php")) {
        $lan = "en";
    }

    include __DIR__ . "/../translations/$lan.php";

    return $translations;

}

?>