Woo shipment modyfication - based on weight and country, with on Carbon Fields on board

Woo + carbonfields - shipment modyfication - weight and country

add_filter( 'woocommerce_package_rates', 'pk_woocommerce_shipping_by_weight', 9999, 2 );
    
function pk_woocommerce_shipping_by_weight( $rates, $package ) {
    $destination = $package['destination'];
    $country     = $destination['country'];
    //cost sets in carbonfields for each reagions
    $pl_shipping_costs = carbon_get_theme_option( 'pk_shipping_costs_pl' );
    $inter_shipping_costs = carbon_get_theme_option( 'pk_shipping_costs_inter' );
    
    $cart_weight=WC()->cart->get_cart_contents_weight();
    if($country=="PL"){
        foreach($rates as $key => $rate ) {
         
            foreach($pl_shipping_costs as $pl_shipping_cost){
                $weight_above=$pl_shipping_cost['pk_shipping_method_above_weight_pl'];
                if($cart_weight>$weight_above&&$key=="flat_rate:".$pl_shipping_cost['pk_shipping_methods']){
                    $rates[$key]->cost =apply_filters('woocs_convert_price', $pl_shipping_cost['pk_shipping_method_cost_pl']  ,false);
                }
            }

		}
    }
    else{
        foreach($rates as $key => $rate ) {
           
            foreach($inter_shipping_costs as $inter_shipping_cost){
                $weight_above=$inter_shipping_cost['pk_shipping_method_above_weight_inter'];
                if($cart_weight>$weight_above&&$key=="flat_rate:".$inter_shipping_cost['pk_shipping_methods_inter']){
                    $rates[$key]->cost =apply_filters('woocs_convert_price', $inter_shipping_cost['pk_shipping_method_cost_inter']  ,false);
                }
             
            }

		}
    }
     

    
     return $rates;
    
}

///   CARBONFIEDLS settings
// function agregating shipping method for each zones

function pk_shipping_method_array_0() {
    $worldwide = new WC_Shipping_Zone( 0 );
    $shipping_methods   = $worldwide->get_shipping_methods();

    $listing_methods=[];

    foreach ( $shipping_methods as $id => $shipping_method ) {
        
          $listing_methods[ $id ] =$shipping_method->title;
        
      }  
    return $listing_methods;
}
function pk_shipping_method_array_1() {
    $worldwide = new WC_Shipping_Zone( 1 );
    $shipping_methods   = $worldwide->get_shipping_methods();

    $listing_methods=[];

    foreach ( $shipping_methods as $id => $shipping_method ) {
        
          $listing_methods[ $id ] =$shipping_method->title;
        
      }  
    return $listing_methods;
}
//      DEFINITION OF FIELDS IN CARBON FIELDS
        Field::make( 'separator', 'theme_shipping_separator', 'USTAWIENIA WYSYŁKI' ),
        Field::make( 'separator', 'theme_shipping_separator_pl', 'POLSKA' ),
        Field::make( 'complex', 'pk_shipping_costs_pl', 'Dodaj koszty wysyłki' )
        ->set_layout( 'grid' )
        ->add_fields( array(
            Field::make( 'select', 'pk_shipping_methods','Wybierz metodę wysyłki' )
            ->add_options( 'pk_shipping_method_array_1' ),
            Field::make( 'text', 'pk_shipping_method_above_weight_pl', 'Powyżej wagi (KG)' )->set_attribute( 'type', 'number' ),
            Field::make( 'text', 'pk_shipping_method_cost_pl', 'Koszt wysyłki' )->set_attribute( 'type', 'number' ),
        ) ),
        Field::make( 'separator', 'theme_shipping_separator_inter', 'Międzynarodowa wysyłka' ),
        Field::make( 'complex', 'pk_shipping_costs_inter', 'Dodaj koszty wysyłki' )
        ->set_layout( 'grid' )
        ->add_fields( array(
            Field::make( 'select', 'pk_shipping_methods_inter','Wybierz metodę wysyłki' )
            ->add_options( 'pk_shipping_method_array_0' ),
            Field::make( 'text', 'pk_shipping_method_above_weight_inter', 'Powyżej wagi (KG)' )->set_attribute( 'type', 'number' ),
            Field::make( 'text', 'pk_shipping_method_cost_inter', 'Koszt wysyłki' )->set_attribute( 'type', 'number' ),
        
        ) ),