<?php

/*
 * Smarty plugin
 * -------------------------------------------------------------
 * Type:     function
 * Name:     get_session_value
 * Purpose:  returns value stored in session
 * -------------------------------------------------------------
 */

use KupShop\KupShopBundle\Util\Compat\ServiceContainer;

function smarty_function_get_session_value($params, &$smarty)
{
    /** @var \Symfony\Component\HttpFoundation\Session\Session $session */
    $session = ServiceContainer::getService('session');

    $type = null;
    $result = null;
    $multiple = null;
    $remove = null;

    extract($params);

    if (empty($type)) {
        trigger_error("Chybějící parametr 'type'");
    }

    switch ($type) {
        case 'added_to_cart':
            $addedToCart = $session->get('addedToCart');
            if ($addedToCart) {
                $session->remove('addedToCart');

                $ids = array_map(f_field('id_cart'), $addedToCart['items']);

                $result = CartItem::createFromSpec(\Query\Operator::inIntArray($ids, 'id'));

                foreach ($result as &$item) {
                    $item->pieces_added = $addedToCart['items'][$item['id']]['quantity'];
                }

                if (!$multiple) {
                    $result = reset($result);
                }
            }
            break;
        case 'user_messages':
            static $flash_messages = null;
            if (is_null($flash_messages)) {
                $flash_messages = [];
                foreach ($session->getFlashBag()->all() as $type => $msg) {
                    foreach ($msg as $message) {
                        $flash_messages[] = array_merge(['severity' => $type], $message);
                    }
                }
            }

            $result = $flash_messages;

            break;
        case 'added_to_favorites':
            $type = 'addedToFavorites';
            $remove = true;
            // no break
        default:
            $result = $session->get($type);

            if ($remove && $result) {
                $session->remove($type);
            }
    }

    if (!empty($params['assign'])) {
        $smarty->assign($params['assign'], $result);
    } else {
        return $result;
    }
}