require _SERVER DOCUMENT_ROOT bitrix modules main include prolog_befor

<?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");?>
<?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/admin/import_xml/import.class.php");?>

<?
$step = !isset($_REQUEST['step']) ? $step = 'start' : $step = $_REQUEST['step'];
$page = !isset($_REQUEST['page']) ? $page = 0 : $page = $_REQUEST['page'];

switch($step)
{   
    case 'start':
        $log = new ClImportConfig();
        
        $log->SetTime('begin');
        
        $log->ResetSession();
        
        $log->SetTime('end');
        
        $log->WriteLog('begin', $step, 'w+');
        
        //header('refresh: '.$log->speed.'; url='.$log->projectUrl.'import.php?step=category_add_to_session');
        header('refresh: '.$log->speed.'; url='.$log->projectUrl.'import.php?step=offers_add_to_session');
    break;
    case 'category_add_to_session':
        $section = new ClImportCategory();
        
        $section->SetTime('begin');
        
        $section->AddCatsFromXml('session');
        
        $section->SetTime('end');
        
        $section->WriteLog('', $step, 'w+');
       
        header('refresh: '.$log->speed.'; url='.$log->projectUrl.'import.php?step=catalog_get_parent_id');
    break;
    case 'catalog_get_parent_id':
        $section = new ClImportCategory();
        
        $section->SetTime('begin');
        
        $section->GetArCatParentId();
        
        $section->SetTime('end');
        
        $section->WriteLog('', $step, 'w+');
        
        header('refresh: '.$log->speed.'; url='.$log->projectUrl.'import.php?step=catalog_del_orphan');
    break;
    case 'catalog_del_orphan':
        $section = new ClImportCategory();
        
        $section->SetTime('begin');
        
        $section->DelateCatOrphan();
        
        unset($_SESSION['CATS']);
        
        $_SESSION['CATS_WITHOUT_IDS'] = $_SESSION['CATS'] = $_SESSION['CATS_WITHOUT_ORPHAN'];
        
        unset($_SESSION['CATS_WITHOUT_ORPHAN']);
        
        $_SESSION['CATS_COUNT_DB'] = $_SESSION['CATS_COUNT_UPD'] = sizeof($_SESSION['CATS']);
        
        // Формула вычисления значения переменной для выхода из цикла
        $_SESSION['RESIDUE'] = $_SESSION['CATS_COUNT_DB'] - (($section->offset - 1) * intval($_SESSION['CATS_COUNT_DB']) / $section->offset) + 1;
        
        $section->SetTime('end');
        
        $section->WriteLog('', $step, 'w+');
        
        header('refresh: '.$section->speed.'; url='.$log->projectUrl.'import.php?step=category_add_to_db');
    break;
    case 'category_add_to_db':
        $section = new ClImportCategory();
        
        $section->SetTime('begin');
        
        foreach ($_SESSION['CATS_WITHOUT_IDS'] as $key => $arItem)
        {
            if (!in_array($arItem['ID'], $_SESSION['CAT_IDS']))
            {
                $_SESSION['CATS'][$key]['ID'] = $section->AddCats($arItem['NAME'], $arItem['UF_ID'], $arItem['UF_PARENT_ID']);
                
                if ($_SESSION['CATS'][$key]['ID'] <> "")
                {
                    $_SESSION['CAT_IDS'][] = $arItem['ID'];
                }
                if ($_SESSION['CATS_COUNT_DB'] < $_SESSION['RESIDUE'])
                {
                    unset ($_SESSION['CATS_IDS']);
                    unset ($_SESSION['CATS_COUNT_DB']);
                    
                    $_SESSION['COUNTER'] = 0;
                    
                    $step = 'update_relation_category';
                    break;
                }
                if ($_SESSION['COUNTER'] >= $section->offset)
                {
                    $_SESSION['COUNTER'] = 0;
                    
                    $page++;
                    $step = 'category_add_to_db&page='.$page;
                    break;
                }
                $_SESSION['CATS_COUNT_DB']--;
                $_SESSION['COUNTER']++;
            }
        }
        
        $section->SetTime('end');
        
        $section->WriteLog('', $step, 'w+');
        
        if ($step == 'update_relation_category')
        {
            unset($_SESSION['CATS_WITHOUT_IDS']);
            
            header('refresh: '.$section->speed.'; url='.$log->projectUrl.'import.php?step=update_relation_category');
        }
        else
        {
            header('refresh: '.$section->speed.'; url='.$log->projectUrl.'import.php?step='.$step);
        }
    break;
    case 'update_relation_category':
        $section = new ClImportCategory();
        
        $section->SetTime('begin');
        
        foreach ($_SESSION['CATS'] as $key => $arItem)
        {
            if (!in_array($arItem['ID'], $_SESSION['CAT_IDS']))
            {
                if ($section->UpdateRelation($arItem) !== false)
                {
                    $_SESSION['CAT_IDS'][] = $arItem['ID'];
                }
                if ($_SESSION['CATS_COUNT_UPD'] < $_SESSION['RESIDUE'])
                {
                    unset ($_SESSION['CATS_IDS']);
                    unset ($_SESSION['CATS_COUNT_UPD']);
                    
                    $_SESSION['COUNTER'] = 0;
                    
                    $step = 'get_offers';
                    break;
                }
                if ($_SESSION['COUNTER'] >= $section->offset)
                {
                    $_SESSION['COUNTER'] = 0;
                    
                    $page++;
                    $step = 'update_relation_category&page='.$page;
                    break;
                }
                $_SESSION['CATS_COUNT_UPD']--;
                $_SESSION['COUNTER']++;
            }
        }
        
        $section->SetTime('end');
        
        $section->WriteLog('', $step, 'w+');
        
        if ($step == 'offers_add_to_session')
        {
            header('refresh: '.$section->speed.'; url='.$section->projectUrl.'import.php?step=offers_add_to_session');
        } 
        else
        {
            header('refresh: '.$section->speed.'; url='.$section->projectUrl.'import.php?step='.$step);
        }
    break;
    case 'offers_add_to_session':
        $offers = new ClImportOffer();
        
        $offers->SetTime('begin');
        
        $offers->AddOffersFromXml('session');
                
        $offers->SetTime('end');
        
        $offers->WriteLog('', $step, 'w+');
        
        header('refresh: '.$offers->speed.'; url='.$offers->projectUrl.'import.php?step=final');
    break;
    case 'final':
    $log = new ClImportConfig();
        
        $log->SetTime('begin');
        
        echo 'Работа завершена.';
        
        $log->SetTime('end');
        
        $log->WriteLog('end', $step, 'w+');
    break;
}