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<?php

// Run script in cli mode

if (php_sapi_name() !== 'cli') {
    header('HTTP/1.1 404 Not Found');
    echo '404 Not Found.';
    exit;
}

$_SERVER['DOCUMENT_ROOT'] = __DIR__;

$DOCUMENT_ROOT = $_SERVER['DOCUMENT_ROOT'];

define('NO_KEEP_STATISTIC', true);

define('NOT_CHECK_PERMISSIONS', true);

define('CHK_EVENT', true);

require($_SERVER['DOCUMENT_ROOT'] . '/bitrix/modules/main/include/prolog_before.php');


// {{{ settings
$limitPerStep = 300;

$dayAfterDelete = COption::GetOptionString('sale', 'delete_after', 30);

$fileLog = $_SERVER['DOCUMENT_ROOT'] . '/~clear_old_basket.log';
// }}}


// {{{ logic
if (intval($dayAfterDelete) <= 0) {
    $dayAfterDelete = 30;
}

global $DB;

@set_time_limit(0);

@ignore_user_abort(true);

@ini_set('memory_limit', '4G');

$c = 0;

$count = 0;

@file_put_contents($fileLog, PHP_EOL . "Counting the total number of old baskets.." . PHP_EOL);

$countIterator = $DB->Query(
    sprintf(
        "SELECT COUNT(f.ID) as TOTAL
        FROM b_sale_fuser f
        LEFT JOIN b_sale_order o ON (o.USER_ID = f.USER_ID)
        WHERE
            TO_DAYS(f.DATE_UPDATE)<(TO_DAYS(NOW())-%s)
            AND f.USER_ID is null
            AND o.ID is null",
        $dayAfterDelete
    )
);

if ($countData = $countIterator->Fetch()) {
    $count = $countData['TOTAL'];
}

if ($count > 0) {

    for ($i = 0, $l = ceil($count / $limitPerStep); $i <= $l; $i++) {

        $res = $DB->Query(
            sprintf(
                "SELECT f.ID
                FROM b_sale_fuser f
                LEFT JOIN b_sale_order o ON (o.USER_ID = f.USER_ID)
                WHERE
                    TO_DAYS(f.DATE_UPDATE)<(TO_DAYS(NOW())-%s)
                    AND f.USER_ID is null
                    AND o.ID is null
                LIMIT %s",
                    $dayAfterDelete,
                    $limitPerStep
            )
        );

        while ($ar = $res->Fetch()) {

            $resB = $DB->Query(
                sprintf(
                    "SELECT b.ID FROM `b_sale_basket` b WHERE b.FUSER_ID = '%s' and b.ORDER_ID IS NULL;", $ar['ID']
                )
            );

            while ($arB = $resB->Fetch()) {
                $DB->Query(sprintf("DELETE FROM b_sale_basket_props WHERE BASKET_ID = '%s'", $arB['ID']), true);
                $DB->Query(sprintf("DELETE FROM b_sale_store_barcode WHERE BASKET_ID = '%s'", $arB['ID']), true);
                $DB->Query(sprintf("DELETE FROM b_sale_basket WHERE ID = '%s'", $arB['ID']), true);
            }

            $DB->Query(sprintf("DELETE FROM b_sale_fuser WHERE ID = '%s'", $ar['ID']), true);

        }

        $c += $limitPerStep;

        @file_put_contents(
            $fileLog,
            sprintf(
                PHP_EOL . "Deleted baskets %s of %s" . PHP_EOL,
                    $c,
                    $count
            )
        );
    }

} else {
    @file_put_contents(
        $fileLog,
        sprintf(
            PHP_EOL . "Old baskets not found" . PHP_EOL
        )
    );
}
// }}}