function custom_add_products_to_cart(){
    WC()->cart->empty_cart();
    $request_body = file_get_contents('php://input');
    $decoded = json_decode($request_body);
    $cartElements = $decoded->addToCart;
    foreach ( $cartElements as $product_id ) {
        WC()->cart->add_to_cart( $product_id );
    }
    if ( $decoded->Uid ) {
        WC()->session->set( 'uid', $decoded->Uid );
    }
    die();
};