<?php

/*
 * Smarty plugin
 * -------------------------------------------------------------
 * Type:     function
 * Name:     eval
 * Purpose:  evaluate a template variable as a template
 * -------------------------------------------------------------
 */

use KupShop\KupShopBundle\Context\LanguageContext;
use KupShop\KupShopBundle\Util\Compat\ServiceContainer;

function html_compress(&$html)
{
    preg_match_all('!(<(?:code|pre).*>[^<]+</(?:code|pre)>)!', $html, $pre); // exclude pre or code tags

    $html = preg_replace('!<(?:code|pre).*>[^<]+</(?:code|pre)>!', '#pre#', $html); // removing all pre or code tags

    $html = preg_replace('#<!–[^\[].+–>#', '', $html); // removing HTML comments

    $html = preg_replace('/[\r\n\t]+/', ' ', $html); // remove new lines, spaces, tabs

    $html = preg_replace('/>[\s]+</', '><', $html); // remove new lines, spaces, tabs

    $html = preg_replace('/[\s]+/', ' ', $html); // remove new lines, spaces, tabs

    if (!empty($pre[0])) {
        foreach ($pre[0] as $tag) {
            $html = preg_replace('!#pre#!', $tag, $html, 1);
        }
    }// putting back pre|code tags
}

function smarty_function_include_cached($params, &$smarty)
{
    $key = null;
    $file = null;
    $force = false;
    $debug = false;
    $skip_cache = false;
    $get_data_function = null;
    $last_updated = null;

    extract($params);

    if ($skip_cache) {
        $debug = true;
    }

    if (empty($key)) {
        trigger_error("include_cached: missing 'key' parameter");

        return;
    }

    if (empty($file)) {
        trigger_error("include_cached: missing 'file' parameter");

        return;
    }

    $html = getCache($key);

    if (is_array($html) && !empty($html['time_cached'])) {
        if ($last_updated && $last_updated > $html['time_cached']) {
            $html = false;
        } else {
            $html = $html['html'] ?? '';
        }
    }

    if ($debug || !$html) {
        ob_start();
        $_smarty_tpl_vars = $smarty->tpl_vars;

        if ($get_data_function) {
            call_user_func_array($get_data_function, [&$params]);
        }

        echo $smarty->_subTemplateRender($file, $smarty->cache_id, $smarty->compile_id, 0, null, $params, 0, false);

        $smarty->tpl_vars = $_smarty_tpl_vars;

        unset($_smarty_tpl_vars);

        $html = ob_get_contents();

        if (!$debug) {
            html_compress($html);
        }

        $cache = ['html' => $html, 'time_cached' => time()];
        // Umožňujeme $get_data_function nastavit TTL, když třeba selže fetch, tak se zacachuje na krátko
        setCache($key, $cache, $params['ttl'] ?? 7200);

        ob_end_clean();
    }

    echo $html;

    if ($force) {
        $params['fromCache'] = true;
        $_smarty_tpl_vars = $smarty->tpl_vars;

        echo $smarty->_subTemplateRender($file, $smarty->cache_id, $smarty->compile_id, 0, null, $params, 0, false);

        $smarty->tpl_vars = $_smarty_tpl_vars;
    }
}

function smarty_function_include_cached_optional(&$params, &$smarty)
{
    if (!empty($params['cache'])) {
        // Use caching, generate key
        $params['key'] = $params['cache_key'];

        if (is_callable($params['cache_key'])) {
            $params['key'] = $params['cache_key']($params);
        }

        if (is_array($params['key'])) {
            $params['key'][] = ServiceContainer::getService(LanguageContext::class)->getActiveId();
            $params['key'] = join('-', $params['key']);
        }

        if (empty($params['file'])) {
            $params['file'] = $params['template'];
        }

        smarty_function_include_cached($params, $smarty);

        return;
    }

    // Fallback without caching
    if (!empty($params['get_data_function'])) {
        call_user_func_array($params['get_data_function'], [&$params]);
    }

    $_smarty_tpl_vars = $smarty->tpl_vars;

    echo $smarty->_subTemplateRender($params['template'], $smarty->cache_id, $smarty->compile_id, 0, null, $params, 0, false);

    $smarty->tpl_vars = $_smarty_tpl_vars;
}

/* vim: set expandtab: */