<?php
/**
 * Shipment.
 *
 * @package Woocommerce Dpd
 */

use DPDVendor\WPDesk\HttpClient\HttpClientRequestException;
use WPDesk\DPD\PickupPoints\Api;
use WPDesk\DPD\PickupPoints\PickupPointsManager;
use WPDesk\DPD\SanitizeTrait;

/**
 * Shipment functionality from Flexible Shipping.
 */
class WPDesk_Flexible_Shipping_Shipment_dpd extends WPDesk_Flexible_Shipping_Shipment implements WPDesk_Flexible_Shipping_Shipment_Interface { // phpcs:ignore
	use SanitizeTrait;

	const META_DPD_COD             = '_dpd_cod';
	const META_DPD_PICKUP          = '_dpd_pickup';
	const META_DPD_PICKUP_POINT_ID = '_dpd_pickup_point_id';
	const META_DPD_SATURDAY        = '_dpd_saturday';
	const META_DPD_NEXT_DAY        = '_dpd_next_day';

	const DOMESTIC      = 'DOMESTIC';
	const INTERNATIONAL = 'INTERNATIONAL';

	const DPD_PACKAGE           = '_dpd_package';
	const DPD_PACKAGE_ID        = '_dpd_package_id';
	const DPD_SENDER_ADDRESS_ID = '_dpd_sender_address_id';

	const DELIVERY_FIELD_ID       = 'delivery_point_id';
	const DELIVERY_FIELD_NAME     = 'delivery_point_name';
	const DELIVERY_FIELD_ADDRESS  = 'delivery_point_address';
	const DELIVERY_FIELD_POSTCODE = 'delivery_point_postcode';
	const DELIVERY_FIELD_CITY     = 'delivery_point_city';

	const TEST_PICKUP_POINT = 'PL99999';

	/**
	 * @var PickupPointsManager
	 */
	private static $pickup_points_manager;

	/**
	 * @var Api
	 */
	private static $pickup_points_api;

	/**
	 * One time message.
	 *
	 * @var null|string
	 */
	private $dpd_one_time_message = null;

	/**
	 * Shipment date.
	 *
	 * @var null
	 */
	public static $shipment_date = null;

	/**
	 * DPD plugin.
	 *
	 * @var WPDesk_WooCommerce_DPD_Plugin
	 */
	public static $woocommerce_dpd_plugin;

	/**
	 * WPDesk_Flexible_Shipping_Shipment_dpd constructor.
	 *
	 * @param int|WP_Post|WPDesk_Flexible_Shipping_Shipment $shipment Shipment or shipment ID.
	 * @param WC_Order|null                                 $order    .
	 */
	public function __construct( $shipment, WC_Order $order = null ) {
		parent::__construct( $shipment, $order );
	}

	/**
	 * @param PickupPointsManager $pickup_points_manager .
	 */
	public static function set_pickup_points( PickupPointsManager $pickup_points_manager ) {
		self::$pickup_points_manager = $pickup_points_manager;
	}

	/**
	 * @param Api $pickup_points_api .
	 */
	public static function set_pickup_points_api( Api $pickup_points_api ) {
		self::$pickup_points_api = $pickup_points_api;
	}

	/**
	 * Checkout.
	 *
	 * @param array $fs_method .
	 * @param array $package   .
	 */
	public function checkout( array $fs_method, $package ) {
		/** @var WC_Order $order */
		$order = $this->get_order();

		if ( isset( $fs_method['dpd_product'] ) ) {
			$this->set_meta( '_dpd_product', $fs_method['dpd_product'] );
		}

		if ( isset( $fs_method['dpd_package_width'] ) ) {
			$this->set_meta( '_dpd_package_width', $fs_method['dpd_package_width'] );
		}

		if ( isset( $fs_method['dpd_package_height'] ) ) {
			$this->set_meta( '_dpd_package_height', $fs_method['dpd_package_height'] );
		}

		if ( isset( $fs_method['dpd_package_depth'] ) ) {
			$this->set_meta( '_dpd_package_depth', $fs_method['dpd_package_depth'] );
		}

		if ( isset( $fs_method['dpd_declared_value'] ) ) {
			$this->set_meta( '_dpd_declared_value', $fs_method['dpd_declared_value'] );
		}

		if ( isset( $fs_method['dpd_cod'] ) ) {
			$this->set_meta( self::META_DPD_COD, $fs_method['dpd_cod'] );
		}

		if ( isset( $fs_method['dpd_pickup'] ) ) {
			$point_id = $order->get_meta( '_dpd_pickup_point_id' );

			if ( $point_id ) {
				try {
					$this->save_pickup_details( $point_id );

					$this->set_meta( self::META_DPD_PICKUP, $fs_method['dpd_pickup'] );
				} catch ( HttpClientRequestException $e ) { // phpcs:ignore
					// TODO: write exception to log.
				}
			}
		}

		if ( isset( $fs_method['dpd_saturday'] ) ) {
			$this->set_meta( self::META_DPD_SATURDAY, $fs_method['dpd_saturday'] );
		}

		if ( isset( $fs_method['dpd_next_day'] ) ) {
			$this->set_meta( self::META_DPD_NEXT_DAY, $fs_method['dpd_next_day'] );
		}

		if ( isset( $fs_method['dpd_package_content'] ) ) {
			$this->set_meta( '_dpd_package_content', $fs_method['dpd_package_content'] );
		}

		$this->set_meta( '_dpd_cod_value', $order->get_total() );
		$this->set_meta( '_dpd_declared_value_value', $order->get_total() );

		$this->set_meta( '_dpd_package_weight', wc_get_weight( fs_calculate_package_weight( $package ), 'kg' ) );
		// Translators: order number.
		$this->set_meta( '_dpd_ref', sprintf( __( 'Zamówienie %s', 'woocommerce-dpd' ), $order->get_order_number() ) );
	}

	/**
	 * Get metaboc content.
	 *
	 * @return false|string
	 */
	public function order_metabox_content() {

		if ( ! function_exists( 'woocommerce_form_field' ) ) {
			$wc_template_functions = trailingslashit( dirname( __FILE__ ) ) . '../../woocommerce/includes/wc-template-functions.php';
			if ( file_exists( $wc_template_functions ) ) {
				include_once $wc_template_functions;
			}
		}

		$settings = $this->get_shipping_method()->settings;

		$order = $this->get_order();

		$id = $this->get_id();

		$dpd_status = $this->get_meta( '_dpd_status' );

		$disabled = false;
		if ( isset( $dpd_status ) && 'ok' === $dpd_status ) {
			$disabled = true;
		}

		$dpd_product         = $this->get_meta( '_dpd_product' );
		$dpd_package_width   = $this->get_meta( '_dpd_package_width' );
		$dpd_package_height  = $this->get_meta( '_dpd_package_height' );
		$dpd_package_depth   = $this->get_meta( '_dpd_package_depth' );
		$dpd_package_weight  = $this->get_meta( '_dpd_package_weight' );
		$dpd_package_content = $this->get_meta( '_dpd_package_content' );
		$dpd_ref             = $this->get_meta( '_dpd_ref' );

		$dpd_declared_value       = $this->get_meta( '_dpd_declared_value' );
		$dpd_declared_value_value = $this->get_meta( '_dpd_declared_value_value' );
		$dpd_cod                  = $this->get_meta( self::META_DPD_COD );
		$dpd_pickup               = $this->get_bool_value( $this->get_meta( self::META_DPD_PICKUP ) );
		$dpd_pickup_point_id      = $this->get_meta( self::META_DPD_PICKUP_POINT_ID );
		$dpd_cod_value            = $this->get_meta( '_dpd_cod_value' );
		$dpd_saturday             = $this->get_meta( self::META_DPD_SATURDAY );
		$dpd_next_day             = $this->get_meta( self::META_DPD_NEXT_DAY );

		$additional_packages = $this->get_meta( '_additional_packages', [] );

		$dpd_one_time_message = $this->get_meta( '_dpd_one_time_message', '' );

		$dpd_message = $this->get_meta( '_dpd_message' );

		$tracking_url = $this->get_tracking_url();

		$dpd_package_id = $this->get_meta( self::DPD_PACKAGE_ID );

		$dpd_package_number = $this->get_tracking_number();

		$label_url = $this->get_label_url();

		$label_avaliable = $this->label_avaliable();

		$dpd_one_time_message = $this->dpd_one_time_message;

		$label_avaliable = $this->label_avaliable();

		$dpd_sender_address_id = $this->get_meta( self::DPD_SENDER_ADDRESS_ID, '' );

		$sender_address_options = $this->prepare_sender_address_options();

		$pickup_points = array_merge( [ '' => __( '-- wybierz --', 'woocommerce-dpd' ) ], self::$pickup_points_manager->get_points( $this->get_bool_value( $dpd_cod ) ) );

		ob_start();

		$echo = false;

		include 'views/order-metabox-content.php';

		$content = ob_get_contents();

		ob_end_clean();

		return $content;
	}

	/**
	 * Prepare options for sender address select field in metabox.
	 *
	 * @return array
	 */
	private function prepare_sender_address_options() {
		$sender_address_options = [ '' => __( 'Adres główny', 'woocommerce-dpd' ) ];
		if ( 'yes' === $this->get_shipping_method()->get_option( WPDesk_WooCommerce_DPD_Shipping_Method::ADDITIONAL_SENDER_ADDRESSES_ENABLED, 'no' ) ) {
			$additional_addresses = $this->get_shipping_method()->get_additional_sender_addresses();
			foreach ( $additional_addresses as $additional_address ) {
				$sender_address_options[ $additional_address->get_address_id() ] = $additional_address->get_address_id();
			}
		}

		return $sender_address_options;
	}

	/**
	 * Order metabox.
	 */
	public function order_metabox() {
		echo $this->order_metabox_content(); // wpcs: XSS ok.
	}

	/**
	 * Metabox title.
	 *
	 * @return string
	 */
	public function get_order_metabox_title() {
		return __( 'DPD', 'woocommerce-dpd' );
	}

	/**
	 * Ajax request.
	 *
	 * @param string $action .
	 * @param array  $data   .
	 *
	 * @return array|void
	 * @throws Exception .
	 */
	public function ajax_request( $action, $data ) {
		$ret = [];
		if ( 'save' === $action ) {
			$this->save_ajax_data( $data );
			$this->save();
			$ret['message'] = __( 'Przesyłka została zapisana.', 'woocommerce-dpd' );
		} elseif ( 'send' === $action ) {
			$this->save_ajax_data( $data );
			$this->api_create();
			$ret['message'] = __( 'Przesyłka została utworzona.', 'woocommerce-dpd' );
		} elseif ( 'cancel' === $action ) {
			$dpd_package_number = $this->get_meta( '_dpd_package_number' );
			$this->save_ajax_data( $data );
			$this->api_cancel();
			$ret['message'] = __( 'Przesyłka została anulowana.', 'woocommerce-dpd' );
		} elseif ( 'refresh' === $action ) {
			$this->api_refresh();
		} else {
			// Translators: action.
			throw new Exception( sprintf( __( 'Nieznana akcja: %1$s', 'woocommerce-dpd' ), $action ) );
		}
		$ret['content'] = $this->order_metabox_content();

		return $ret;
	}

	/**
	 * Api refresh.
	 */
	public function api_refresh() {
	}

	/**
	 * Save AJAX data.
	 *
	 * @param array $data .
	 */
	public function save_ajax_data( $data ) {
		if ( isset( $data['dpd_product'] ) ) {
			$this->set_meta( '_dpd_product', $data['dpd_product'] );
		} else {
			$this->delete_meta( '_dpd_product' );
		}
		if ( isset( $data['dpd_sender_address_id'] ) ) {
			$this->set_meta( self::DPD_SENDER_ADDRESS_ID, wp_unslash( $data['dpd_sender_address_id'] ) );
		} else {
			$this->delete_meta( self::DPD_SENDER_ADDRESS_ID );
		}
		if ( isset( $data['dpd_package_weight'] ) ) {
			$this->set_meta( '_dpd_package_weight', $data['dpd_package_weight'] );
		} else {
			$this->delete_meta( '_dpd_package_weight' );
		}
		if ( isset( $data['dpd_package_width'] ) ) {
			$this->set_meta( '_dpd_package_width', $data['dpd_package_width'] );
		} else {
			$this->delete_meta( '_dpd_package_width' );
		}
		if ( isset( $data['dpd_package_height'] ) ) {
			$this->set_meta( '_dpd_package_height', $data['dpd_package_height'] );
		} else {
			$this->delete_meta( '_dpd_package_height' );
		}
		if ( isset( $data['dpd_package_depth'] ) ) {
			$this->set_meta( '_dpd_package_depth', $data['dpd_package_depth'] );
		} else {
			$this->delete_meta( '_dpd_package_depth' );
		}
		if ( isset( $data['additional_packages'] ) ) {
			unset( $data['additional_packages']['_additional_key_'] );
			$additional_packages = [];
			foreach ( $data['additional_packages'] as $additional_package ) {
				$additional_packages[] = $additional_package;
			}
			$this->set_meta( '_additional_packages', $additional_packages );
		} else {
			$this->delete_meta( '_additional_packages' );
		}
		if ( isset( $data['dpd_package_content'] ) ) {
			$this->set_meta( '_dpd_package_content', $data['dpd_package_content'] );
		} else {
			$this->delete_meta( '_dpd_package_content' );
		}
		if ( isset( $data['dpd_ref'] ) ) {
			$this->set_meta( '_dpd_ref', $data['dpd_ref'] );
		} else {
			$this->delete_meta( '_dpd_ref' );
		}

		if ( isset( $data['dpd_declared_value'] ) ) {
			$this->set_meta( '_dpd_declared_value', $data['dpd_declared_value'] );
		} else {
			$this->delete_meta( '_dpd_declared_value' );
		}
		if ( isset( $data['dpd_declared_value_value'] ) ) {
			$this->set_meta( '_dpd_declared_value_value', $data['dpd_declared_value_value'] );
		} else {
			$this->delete_meta( '_dpd_declared_value_value' );
		}
		if ( isset( $data['dpd_cod'] ) ) {
			$this->set_meta( self::META_DPD_COD, $data['dpd_cod'] );
		} else {
			$this->delete_meta( self::META_DPD_COD );
		}
		if ( isset( $data['dpd_cod_value'] ) ) {
			$this->set_meta( '_dpd_cod_value', $data['dpd_cod_value'] );
		} else {
			$this->delete_meta( '_dpd_cod_value' );
		}
		if ( isset( $data['dpd_saturday'] ) ) {
			$this->set_meta( self::META_DPD_SATURDAY, $data['dpd_saturday'] );
		} else {
			$this->delete_meta( self::META_DPD_SATURDAY );
		}

		if ( isset( $data['dpd_next_day'] ) ) {
			$this->set_meta( self::META_DPD_NEXT_DAY, $data['dpd_next_day'] );
		} else {
			$this->delete_meta( self::META_DPD_NEXT_DAY );
		}

		$pickup   = isset( $data['dpd_pickup'] );
		$point_id = isset( $data['dpd_pickup_point_id'] ) ? $data['dpd_pickup_point_id'] : '';

		if ( $pickup && $point_id ) {
			try {
				$this->save_pickup_details( $point_id );

				$this->set_meta( self::META_DPD_PICKUP, $data['dpd_pickup'] );
			} catch ( HttpClientRequestException $e ) { // phpcs:ignore
				// TODO: write exception to log.
			}
		} else {
			$this->delete_meta( self::META_DPD_PICKUP );
			$this->delete_meta( self::DELIVERY_FIELD_ID );
			$this->delete_meta( self::DELIVERY_FIELD_NAME );
			$this->delete_meta( self::DELIVERY_FIELD_ADDRESS );
			$this->delete_meta( self::DELIVERY_FIELD_POSTCODE );
			$this->delete_meta( self::DELIVERY_FIELD_CITY );
		}
	}

	/**
	 * @param string $point_id .
	 *
	 * @throws HttpClientRequestException
	 */
	private function save_pickup_details( $point_id ) {
		if ( self::TEST_PICKUP_POINT !== $point_id ) {
			$point = self::$pickup_points_api->get_point_details( $point_id );

			$this->set_meta( self::DELIVERY_FIELD_ID, $point->get_pudo_id() );
			$this->set_meta( self::DELIVERY_FIELD_NAME, $point->get_location_hint() );
			$this->set_meta( self::DELIVERY_FIELD_ADDRESS, $point->get_address_1() );
			$this->set_meta( self::DELIVERY_FIELD_POSTCODE, $point->get_zipcode() );
			$this->set_meta( self::DELIVERY_FIELD_CITY, $point->get_city() );
		}

		$this->set_meta( self::META_DPD_PICKUP_POINT_ID, $point_id );
	}

	/**
	 * Get error message.
	 *
	 * @return string
	 */
	public function get_error_message() {
		return $this->get_meta( '_dpd_message' );
	}

	/**
	 * Get tracking number.
	 *
	 * @return string|null
	 */
	public function get_tracking_number() {
		return $this->get_meta( '_dpd_package_number' );
	}

	/**
	 * Get tracking url.
	 *
	 * @return string|null
	 */
	public function get_tracking_url() {
		$tracking_url = null;
		$dpd_package  = $this->get_meta( self::DPD_PACKAGE, '' );
		if ( '' !== $dpd_package ) {
			$tracking_url = 'https://tracktrace.dpd.com.pl/parcelDetails?typ=1';
			$count        = 1;
			if ( ! is_array( $dpd_package->return->Packages->Package->Parcels->Parcel ) ) {
				$dpd_package->return->Packages->Package->Parcels->Parcel = [ $dpd_package->return->Packages->Package->Parcels->Parcel ];
			}
			foreach ( $dpd_package->return->Packages->Package->Parcels->Parcel as $parcel ) {
				$tracking_url .= '&p' . $count . '=' . $parcel->Waybill;
				$count++;
			}
		}

		return $tracking_url;
	}

	/**
	 * Create shipment in API.
	 *
	 * @throws Exception .
	 */
	public function api_create() {
		$this->api_create_webapi();
		$this->save();
		$error_message = $this->get_error_message();
		if ( ! empty( $error_message ) ) {
			throw new Exception( $error_message );
		}
		$order = $this->get_order();
		$order->add_order_note(
			sprintf(
			// Translators: package number.
				__( 'Do zamówienia została utworzona przesyłka %1$s DPD.', 'woocommerce-dpd' ),
				$this->get_meta( '_dpd_package_number' )
			),
			true
		);
	}

	/**
	 * Create shipment in WEB API.
	 *
	 * @throws Exception .
	 */
	public function api_create_webapi() {

		if ( 'fs-new' !== $this->get_status() && 'fs-failed' !== $this->get_status() ) {
			throw new Exception(
				sprintf(
				// Translators: status.
					__( 'Invalid status: %1$s. Package already created?', 'woocommerce-dpd' ),
					$this->get_status()
				)
			);
		}

		$order = $this->get_order();

		$dpd_shipment = new WPDesk_WooCommerce_DPD_Shipment( $this );
		$shipment     = $dpd_shipment->prepare_shipment();

		$api = $this->get_api();

		try {
			$dpd_package = $api->create_shipment( [ $shipment ] );
			if ( ! empty( $dpd_package->return ) && ! empty( $dpd_package->return->Status ) ) {
				if ( 'OK' === $dpd_package->return->Status ) {
					$this->set_meta( '_dpd_status', 'ok' );
					$this->set_meta( self::DPD_PACKAGE, $dpd_package );
					$this->set_meta( self::DPD_PACKAGE_ID, $dpd_package->return->Packages->Package->PackageId );
					$this->set_meta( '_dpd_session_id', $dpd_package->return->SessionId );
					$package_number = '';
					if ( ! is_array( $dpd_package->return->Packages->Package->Parcels->Parcel ) ) {
						$dpd_package->return->Packages->Package->Parcels->Parcel = [ $dpd_package->return->Packages->Package->Parcels->Parcel ];
					}
					foreach ( $dpd_package->return->Packages->Package->Parcels->Parcel as $parcel ) {
						if ( '' !== $package_number ) {
							$package_number .= ', ';
						}
						$package_number .= $parcel->Waybill;
					}
					$this->set_meta( '_dpd_package_number', $package_number );

					$this->set_meta( '_dpd_session_type', $this->is_domestic() ? self::DOMESTIC : self::INTERNATIONAL );

					$this->delete_meta( '_dpd_message' );
					$this->update_status( 'fs-confirmed' );
					$this->save();
					do_action( 'flexible_shipping_shipment_confirmed', $this );
				} else {
					throw new Exception( $api->parse_shipment_errors( $dpd_package ) );
				}
			} else {
				throw new Exception(
				// Translators: api response.
					sprintf( __( 'Niepoprawna odpowiedź API DPD: %1$s', 'woocommerce-dpd' ), print_r( $dpd_package, true ) )
				);
			}
		} catch ( Exception $e ) {
			$this->set_meta( '_dpd_status', 'error' );
			$this->set_meta( '_dpd_message', $e->getMessage() );
			$this->update_status( 'fs-failed' );
			$this->save();
			throw $e;
		}
	}

	/**
	 * Cancel package in API.
	 *
	 * @throws Exception .
	 */
	public function api_cancel() {

		if ( 'fs-confirmed' !== $this->get_status() ) {
			throw new Exception(
			// Translators: status.
				sprintf( __( 'Niepoprawny status przesyłki: %1$s. Przesyłka została anulaowana wcześniej lub protokół został już utworzony?', 'woocommerce-dpd' ), $this->get_status() )
			);
		}

		$dpd_package_number = $this->get_meta( '_dpd_package_number' );

		$this->delete_meta( '_dpd_status' );
		$this->delete_meta( self::DPD_PACKAGE );
		$this->delete_meta( self::DPD_PACKAGE_ID );
		$this->delete_meta( '_dpd_session_id' );
		$this->delete_meta( '_dpd_package_number' );
		$this->delete_meta( '_dpd_message' );

		$this->update_status( 'fs-new' );
		$this->save();
		$order = $this->get_order();
		$order->add_order_note(
		// Translators: package number.
			sprintf( __( 'Przesyłka DPD %s została usunięta.', 'woocommerce-dpd' ), $dpd_package_number ),
			true
		);
	}

	/**
	 * Get label.
	 *
	 * @return array
	 * @throws Exception .
	 */
	public function get_label() {
		if ( ! $this->label_avaliable() ) {
			throw new Exception(
			// Translators: status.
				sprintf( __( 'Etykieta niedostępna dla statusu %1$s.', 'woocommerce-dpd' ), $this->get_status() )
			);
		}

		return $this->api_get_label();
	}

	/**
	 * Displays email text: after order table.
	 */
	public function get_email_after_order_table() {
		if ( $this->label_avaliable() ) {
			$args = [
				'dpd_packages' => [
					[
						'tracking_url' => $this->get_tracking_url(),
						'shipment_id'  => $this->get_meta( '_dpd_package_number' ),
					],
				],
			];
			echo self::$woocommerce_dpd_plugin->load_template( 'email_after_order_table', 'woocommerce', $args ); // wpcs: XSS ok.
		}
	}

	/**
	 * Displays after order table on page.
	 */
	public function get_after_order_table() {
		if ( $this->label_avaliable() ) {
			$args = [
				'dpd_packages' => [
					[
						'tracking_url' => $this->get_tracking_url(),
						'shipment_id'  => $this->get_meta( '_dpd_package_number' ),
					],
				],
			];
			echo self::$woocommerce_dpd_plugin->load_template( 'order_details_after_order_table', 'woocommerce', $args ); // wpcs: XSS ok.
		}
	}

	/**
	 * Get label from API.
	 *
	 * @return array
	 */
	public function api_get_label() {
		$label_data = [
			'label_format' => 'pdf',
			'content'      => null,
			'file_name'    => 'dpd_' . $this->get_tracking_number() . '.pdf',
		];

		$shipping_method = $this->get_shipping_method();
		$settings        = $shipping_method->settings;
		$api             = $this->get_api();
		$session_type    = $this->get_session_type();

		$label_settings = $shipping_method->get_label_settings();

		$label_format          = $label_settings->get_label_format();
		$label                 = $api->get_label(
			$this->get_meta( self::DPD_PACKAGE_ID ),
			$session_type,
			$label_format,
			$label_settings->get_label_page_format(),
			$label_settings->get_label_type_for_api()
		);
		$label_data['content'] = $label->return->documentData;

		if ( 'ZPL' === $label_format ) {
			$label_format = 'zpl';
		} elseif ( 'EPL' === $label_format ) {
			$label_format = 'epl';
		} else {
			$label_format = 'pdf';
		}
		$label_data['label_format'] = $label_format;
		$label_data['file_name']    = 'dpd_' . str_replace( ', ', '-', $this->get_tracking_number() ) . '.' . $label_format;

		return $label_data;
	}

	/**
	 * Get API.
	 *
	 * @return mixed
	 */
	public function get_api() {
		$shipping_method = $this->get_shipping_method();

		return $shipping_method->get_api();
	}

	/**
	 * Get shipping method.
	 *
	 * @return WPDesk_WooCommerce_DPD_Shipping_Method
	 */
	public function get_shipping_method() {
		$shipping_methods = WC()->shipping()->shipping_methods;
		if ( empty( $shipping_methods ) || ! is_array( $shipping_methods ) || count( $shipping_methods ) === 0 || ! isset( $shipping_methods[ WPDesk_WooCommerce_DPD_Shipping_Method::SHIPPING_METHOD_ID ] ) ) {
			$shipping_methods = WC()->shipping()->load_shipping_methods();
		}

		return $shipping_methods[ WPDesk_WooCommerce_DPD_Shipping_Method::SHIPPING_METHOD_ID ];
	}

	/**
	 * Add shipment from order edit page.
	 */
	public function admin_add_shipment() {
		$order = $this->get_order();
		if ( 'cod' === $order->get_payment_method() ) {
			$this->set_meta( self::META_DPD_COD, '1' );
		}
		$this->set_meta( '_dpd_product', 'classic' );
		$weight = wc_get_weight( fs_calculate_order_weight( $order ), 'kg' );
		$this->set_meta( '_dpd_package_weight', $weight );
		// Translators: order number.
		$this->set_meta( '_dpd_ref', sprintf( __( 'Zamówienie %s', 'woocommerce-dpd' ), $order->get_order_number() ) );
	}

	/**
	 * Is domestic shipment?
	 *
	 * @return bool
	 */
	private function is_domestic() {
		if ( 'PL' === $this->get_order()->get_shipping_country() ) {
			return true;
		}

		return false;
	}

	/**
	 * Get session type.
	 * Returns meta _dpd_session_type when shipment already created, or calculated value for shipping country from
	 * order.
	 *
	 * @return string
	 */
	public function get_session_type() {
		return $this->get_meta( '_dpd_session_type', $this->is_domestic() ? self::DOMESTIC : self::INTERNATIONAL );
	}

	/**
	 * Get manifest name.
	 *
	 * @return string
	 */
	public function get_manifest_name() {
		$manifest_name = $this->is_domestic() ? 'dpd_domestic' : 'dpd_international';
		if ( '' !== $this->get_meta( '_dpd_session_type', '' ) ) {
			$manifest_name = strtolower( 'dpd_' . $this->get_meta( '_dpd_session_type', '' ) );
		}

		return $manifest_name;
	}
}