Customizations via your own code

add_filter( 'kroconnect_fraktjakt_address_from_destination', 'krk_kroconnect_fraktjakt_address_from_destination', 10, 2 );

/**
  * Control customer type when qery requests are done towards Fraktjakt.
  *
  * @param object     $address Customer address object that will be sent to Fraktjakt.
  * @param array      $destination Customer Destination used by WooCommerce to calculate shipping.
  * @return object    $address Modified customer address object.
  * */

function krk_kroconnect_fraktjakt_address_from_destination( $address, $destination ) {
  $address->residential = false;
	return $address;
}

add_filter('kroconnect_fraktjakt_commodity_from_cart_item', 'krk_commodity_from_cart_item', 10, 3);

/**
  * Modify or exclude a product before it is sent to Fraktjakt.
  *
  * @param object     $commodity The article that will be sent to Fraktjakt.
  * @param array      $cart_item The cart item from WooCommerce cart.
  * @param object     $product WooCommerce product object.
  * @return object
  * */
function krk_commodity_from_cart_item( $commodity, $cart_item, $product ) {
	if( 'art123' === $commodity->article_number ) {
        // Exclude product to be sent to Fraktjakt if sku equals art123.
		$commodity = null;
	}
	return $commodity;
}

add_filter( 'kroconnect_fraktjakt_commodity_from_order_item', 'krk_commodity_from_order_item', 10, 3 );

/**
  * Modify or exclude a product before it is sent to Fraktjakt from a WooCommerce order.
  *
  * @param object                 $commodity  The article that will be sent to Fraktjakt.
  * @param WC_Order_Item_Product  $order_item The order line item.
  * @param WC_Product             $product    WooCommerce product object.
  * @return object|null
  * */
function krk_commodity_from_order_item( $commodity, $order_item, $product ) {
	// Exclude the product from the request if the SKU is art123.
	if ( 'art123' === $commodity->article_number ) {
		return null;
	}

	// Override the weight for a specific shipping class. The weight is set per line, so
	// multiply by the quantity. Weight is always in kilograms on the commodity.
	if ( 'bulky' === $product->get_shipping_class() ) {
		$commodity->set_weight( 2.5, $order_item->get_quantity(), 'kg' );
	}

	// Ship a specific product in its own parcel.
	if ( 'art456' === $commodity->article_number ) {
		$commodity->set_in_own_parcel( true );
	}

	// Read data from the order the item belongs to.
	$order = $order_item->get_order();
	if ( $order && 'SE' !== $order->get_shipping_country() ) {
		$commodity->set_taric( $product );
	}

	return $commodity;
}

add_filter( 'kroconnect_fraktjakt_add_rate', 'custom_kroconnect_fraktjakt_add_rate', 10, 2 );

/**
  * Function to potentially exclude shipping rate from available shipping options in checkout. 
  *
  * @param array $formatted_rate Data about the shipping rate that is about to be added to WooCommerce.
  * @param array $shipping_product Fraktjakt shipping product.
  * @return array|empty string
  * */
function custom_kroconnect_fraktjakt_add_rate( $formatted_rate, $shipping_product ) {
	$shipping_classes = custom_kroconnect_get_cart_shipping_classes();
	
	// If shipping class is bulky and Fraktjakt shipping product is DHL Service Point (ID 99).
	if( in_array( 'bulky', $shipping_classes, true ) && '99' === $shipping_product['id'] ) {
		$formatted_rate = '';
	}
	return $formatted_rate;
}

/**
  * Helper function to return shipping classes used in cart.
  *
  * @return array
  * */
function custom_kroconnect_get_cart_shipping_classes() {
	$shipping_classes = array();
	// Check all cart items.
	foreach ( WC()->cart->get_cart() as $cart_item ) {

		if ( ! empty( $cart_item['data']->get_shipping_class() ) ) {
			$shipping_classes[] = $cart_item['data']->get_shipping_class();
		}
	}
	return $shipping_classes;
}

add_action( 'woocommerce_email_order_meta', 'custom_tracking_link_email_order_meta', 10, 3 );

/**
  * Function for adding Tracking Link to customer mail
  *
  * @param WC_Order $order WC order.
  * @param bool     $sent_to_admin Send to admin.
  * @param bool     $plain_text Plain text.
  * @return void
  * */
function custom_tracking_link_email_order_meta( $order, $sent_to_admin, $plain_text ) {
	$shipment_tracking_url = $order->get_meta( 'kroconnect_shipment_tracking_url', true );

	if ( ! empty( $shipment_tracking_url ) ) {

		$shipment_tracking_text = __( 'Shipment Tracking Link', 'your-text-domain' );

		echo '<a class="custom-email-shipment-tracking-link" href="' . esc_html( $shipment_tracking_url ) . '" target="_blank">' . esc_html( $shipment_tracking_text ) . '</a>';
	}
}

add_action( 'woocommerce_rest_insert_shop_order_object', 'krct_create_shipping_for_cello_orders' );

/**
 * Create Fraktjakt shipment for orders created via WooCommerce REST API.
 *
 * @param object $order WooCommerce order object.
 */
function krct_create_shipping_for_cello_orders( $order ) {
	// Check if this is a REST API order. If not, do nothing.
	if ( 'rest-api' !== $order->get_created_via() ) {
		return;
	}

	// Check if the order already has a Fraktjakt shipment created.
	$shipping_methods              = $order->get_shipping_methods();
	$shipping_method               = reset( $shipping_methods );
	$fraktjakt_shipping_product_id = $shipping_method->get_meta( 'fraktjakt_shipping_product_id' );
	if ( $fraktjakt_shipping_product_id ) {
		return;
	}

	if ( $order->get_meta( 'kroconnect_shipment_processed', true ) ) {
		return;
	}

	// Determine shipping product based on order weight.
	if ( krct_get_order_contents_weight( $order ) > 500 ) {
		// If the order weighs more than 500 g (assuming WooCommerce weight settings are in grams).
		// DHL Servicepoint.
		$shipping_product_id = 99;
	} else {
		// Postnord Varubrev klass 1.
		$shipping_product_id = 162;
	}

	// Do not set a specific pickup point for REST API orders, as we do not have that information available.
	$pickup_point_id = '';

	// Fetch and save shipment for the order.
	// If something goes wrong, it will be logged in the Kroconnect log and create a message as an order note in the WooCommerce order.
	$create_shipment = KROCONNECT()->container()->get( 'fraktjakt_admin_order_shipping' )->fetch_and_save_fraktjakt_shipment( $order, $shipping_product_id, $pickup_point_id );
}

/**
 * Get weight of items in the order.
 *
 * @param object $order The WooCommerce order.
 * @return float
 */
function krct_get_order_contents_weight( $order ) {
	$weight = 0.0;

	foreach ( $order->get_items() as $item ) {
		if ( $item['product_id'] > 0 ) {
			$_product = $item->get_product();
			if ( $_product->has_weight() ) {
				$weight += (float) $_product->get_weight() * $item['qty'];
			}
		}
	}

	return $weight;
}