<?
AddEventHandler("catalog", "OnSuccessCatalogImport1C", "setCatalogElementMinPrice");

function setCatalogElementMinPrice() {
    if(!(CModule::IncludeModule('iblock') && CModule::IncludeModule('catalog'))){
        return;
    }
    
    $importIblockId = $_SESSION["BX_CML2_IMPORT"]["NS"]["IBLOCK_ID"];
    //закончили импорт торговых предложений
    if($importIblockId != SKU_IBLOCK_ID){
        return;
    }

    $output .= date('d.m.Y H:i:s') . ' setCatalogElementMinPrice' . "\n";
    file_put_contents($_SERVER['DOCUMENT_ROOT'] . '/bitrix/success_1c_import.log', $output, FILE_APPEND);
    
    /*собираем все цены из торговых предложений*/
    $arFilter = array(
        "IBLOCK_ID" => SKU_IBLOCK_ID,
        "ACTIVE" => "Y",
        //">CATALOG_QUANTITY" => 0
    );

    $arSelect = array(
        "ID",
        "IBLOCK_ID",
        "NAME",
        "CATALOG_PRICE_1",
        "PROPERTY_CML2_LINK"
    );

    $arElementsPrices = array();

    $rsElements = CIBlockElement::GetList(array('CATALOG_PRICE_1'=>'DESC'), $arFilter, false, false, $arSelect);
    while( $arElement = $rsElements->GetNext() ) {
        $CATALOG_ELEMENT_ID = $arElement['PROPERTY_CML2_LINK_VALUE'];

        $arElementsPrices[ $CATALOG_ELEMENT_ID ][] = $arElement['CATALOG_PRICE_1'];
    }

    /*проставляем их элементам*/
    $arFilter = array(
        "IBLOCK_ID" => CATALOG_IBLOCK_ID,
        "ACTIVE" => "Y"
    );

    $rsElements = CIBlockElement::GetList(array(), $arFilter);
    while( $arElement = $rsElements->GetNext() ) {
        $ID = $arElement['ID'];
        $minPrice = min($arElementsPrices[ $ID ]);
        CIBlockElement::SetPropertyValuesEx($ID, CATALOG_IBLOCK_ID, array("MINIMUM_PRICE" => $minPrice));
    }

    $GLOBALS['CACHE_MANAGER']->ClearByTag('iblock_id_' . CATALOG_IBLOCK_ID);
    
    $output .= date('d.m.Y H:i:s') . ' setCatalogElementMinPrice end' . "\n";
    file_put_contents($_SERVER['DOCUMENT_ROOT'] . '/bitrix/success_1c_import.log', $output, FILE_APPEND);
}