<?php
if (!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED !== true) die();

global $arIblocks;
$iblockCatalog = $arIblocks['catalog'];

$aMenuLinks = [];
$cacheTime = 3600000;
$cacheId = 'left_menu_sections_'.$iblockCatalog;
$cacheDir = '/menu/';

$obCache = new CPHPCache();


if ($obCache->InitCache($cacheTime, $cacheId, $cacheDir)) {
    $aMenuLinks = $obCache->GetVars();
} elseif ($obCache->StartDataCache()) {
    CModule::IncludeModule('iblock');
    
    $arSelect = ['ID', 'NAME', 'SECTION_PAGE_URL'];
    $arFilter = ['IBLOCK_ID' => $iblockCatalog, 'ACTIVE' => 'Y', 'DEPTH_LEVEL' => 1];
    $arSort = ['SORT' => 'ASC', 'NAME' => 'ASC'];
    
    $rsSections = CIBlockSection::GetList($arSort, $arFilter, false, $arSelect);
    
    while ($arSection = $rsSections->GetNext()) {
        $aMenuLinks[] = [
            $arSection['NAME'],
            $arSection['SECTION_PAGE_URL'],
            [],
            [],
            ''
        ];
    }
    
    $obCache->EndDataCache($aMenuLinks);
}