rder->get_shipping_methods();
			foreach ( $order_shipping_methods as $shipping_id => $shipping_method ) {
				if ( isset( $shipping_method['item_meta'] )
				     && isset( $shipping_method['item_meta']['_fs_method'] )
				) {
					$fs_method = $shipping_method['item_meta']['_fs_method'];
					if ( ! empty( $fs_method['method_integration'] ) ) {
						$order_meta = $order->get_meta( '_flexible_shipping_integration', false );
						if ( ! in_array( $fs_method['method_integration'], $order_meta, true ) ) {
							$order->add_meta_data( '_flexible_shipping_integration', $fs_method['method_integration'] );
						}
					}
				}
			}
			$mutex->releaseLock();
		}
	}

	/**
	 * Set appropriate default FS method if no method chosen.
	 *
	 * @param string             $default           Default shipping method in frontend.
	 * @param WC_Shipping_Rate[] $available_methods Available methods in frontend.
	 *                                              Function is assigned to woocommerce_default_shipment_method filter.
	 *                                              In this parameter we expecting array of WC_Shipping_Rate objects.
	 *                                              But third party plugins can change this parameter type or set it to
	 *                                              null.
	 * @param string|bool|null   $chosen_method     If false or null then no method is chosen.
	 *
	 * @return string
	 */
	public function woocommerce_default_shipment_method( $default, $available_methods, $chosen_method ) {
		if ( ! is_array( $available_methods ) ) {
			return $default;
		}
		if ( null === $chosen_method || false === $chosen_method ) {
			foreach ( $available_methods as $available_method ) {
				$method_meta = $available_method->get_meta_data();
				if ( $method_meta && isset( $method_meta[ WPDesk_Flexible_Shipping::META_DEFAULT ] ) && 'yes' === $method_meta[ WPDesk_Flexible_Shipping::META_DEFAULT ] ) {
					$candidate_id = $available_method->get_id();
					if ( array_key_exists( $candidate_id, $available_methods ) ) {
						return $candidate_id;
					}
				}
			}
		}

		return $default;
	}

	/**
	 * @param string $suffix .
	 */
	private function enqueue_rules_scripts( $suffix ) {
		wp_register_script(
			'fs_rules_settings',
			trailingslashit( $this->get_plugin_assets_url() ) . 'js/rules-settings.js',
			[ 'wp-i18n' ],
			$this->scripts_version
		);
		wp_enqueue_script( 'fs_rules_settings' );
		wp_enqueue_style(
			'fs_rules_settings',
			trailingslashit( $this->get_plugin_assets_url() ) . 'css/rules-settings.css',
			[],
			$this->scripts_version
		);
		wp_set_script_translations( 'fs_rules_settings', 'flexible-shipping', $this->plugin_path . '/lang/' );

	}

	/**
	 * Admin enqueue scripts.
	 */
	public function admin_enqueue_scripts() {
		if ( $this->should_enqueue_admin_scripts() ) {
			$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
			wp_register_script(
				'fs_admin',
				trailingslashit( $this->get_plugin_assets_url() ) . 'js/admin' . $suffix . '.js',
				[ 'jquery' ],
				$this->scripts_version
			);

			$notice_url = get_locale() == 'pl_PL' ? 'https://octol.io/fs-rate-not-good-pl' : 'https://octol.io/fs-rate-not-good';
			wp_localize_script(
				'fs_admin',
				'fs_admin',
				[
					'ajax_url'                => admin_url( 'admin-ajax.php' ),
					'notice_not_good_enought' => sprintf(
					// Translators: link.
						__( 'How can We make Flexible Shipping better for you? %1$sJust write to us.%2$s', 'flexible-shipping' ),
						'<a class="button close-fs-rate-notice" target="_blank" href="' . esc_url( $notice_url ) . '">',
						'</a>'
					),
				]
			);
			wp_enqueue_script( 'fs_admin' );

			$current_screen = get_current_screen();

			wp_register_script(
				'wpdesk_contextual_info',
				trailingslashit( $this->get_plugin_assets_url() ) . 'js/contextual-info' . $suffix . '.js',
				[ 'jquery' ],
				$this->scripts_version
			);
			wp_enqueue_script( 'wpdesk_contextual_info' );

			if ( ! empty( $current_screen ) && 'shop_order' === $current_screen->id ) {
				wp_enqueue_media();
			}

			wp_enqueue_style(
				'fs_admin',
				trailingslashit( $this->get_plugin_assets_url() ) . 'css/admin.css',
				[],
				$this->scripts_version
			);
			wp_enqueue_style(
				'fs_font',
				trailingslashit( $this->get_plugin_assets_url() ) . 'css/font' . $suffix . '.css',
				[],
				$this->scripts_version
			);

			$this->enqueue_rules_scripts( $suffix );

			do_action( 'flexible-shipping/admin/enqueue_scripts', $this, $suffix );

		}
	}

	/**
	 * Should enqueue admin scripts?
	 */
	private function should_enqueue_admin_scripts() {
		$current_screen = get_current_screen();

		if ( ! $current_screen ) {
			return false;
		}

		$wc_screen_id = sanitize_title( __( 'WooCommerce', 'woocommerce' ) );

		if (
			'woocommerce_page_wc-orders' === $current_screen->id
			|| in_array( $current_screen->post_type, [ 'shop_order', 'shop_subscription', ], true )
			|| $wc_screen_id . '_page_wc-settings' === $current_screen->id
			|| 'woocommerce_page_wc-settings' === $current_screen->id ) {
			return true;
		}

		return false;
	}

	/**
	 * Enqueue Wordpress scripts.
	 */
	public function wp_enqueue_scripts() {
		$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
	}

	/**
	 * Links filter.
	 *
	 * @param array $links .
	 *
	 * @return array
	 */
	public function links_filter( $links ) {
		$docs_link    = get_locale() === 'pl_PL' ? 'https://octol.io/fs-docs-pl' : 'https://octol.io/fs-docs';
		$support_link = get_locale() === 'pl_PL' ? 'https://octol.io/fs-support-pl' : 'https://octol.io/fs-support';

		$settings_url = admin_url( 'admin.php?page=wc-settings&tab=shipping&section=' . WPDesk_Flexible_Shipping_Settings::METHOD_ID );

		$plugin_links = [
			'<a href="' . $settings_url . '">' . __(
				'Settings',
				'flexible-shipping'
			) . '</a>',
			'<a target="_blank" href="' . $docs_link . '">' . __( 'Docs', 'flexible-shipping' ) . '</a>',
			'<a target="_blank" href="' . $support_link . '">' . __( 'Support', 'flexible-shipping' ) . '</a>',
		];
		$pro_link     = get_locale() === 'pl_PL' ? 'https://octol.io/fs-upgrade-pl' : 'https://octol.io/fs-upgrade';

		if ( ! wpdesk_is_plugin_active( 'flexible-shipping-pro/flexible-shipping-pro.php' ) ) {
			$plugin_links[] = '<a href="' . $pro_link . '" target="_blank" style="color:#d64e07;font-weight:bold;">' . __(
					'Buy PRO',
					'flexible-shipping'
				) . '</a>';
		}

		return array_merge( $plugin_links, $links );
	}

	/**
	 * .
	 * @param string $method_id       .
	 * @param array  $shipping_method .
	 *
	 * @return string
	 */
	public function flexible_shipping_method_rate_id( $method_id, array $shipping_method ) {
		if ( isset( $shipping_method['id_for_shipping'] ) && '' !== $shipping_method['id_for_shipping'] ) {
			$method_id = $shipping_method['id_for_shipping'];
		}

		return $method_id;
	}


}