blic static function schedule_anonymize( $order ) {
		if ( is_a( $order, 'WC_Order' ) ) {
			// Postpone until any pending updates are completed.
			self::schedule_action( 'anonymize', array( $order->get_id() ) );
		}
	}

	/**
	 * Schedule an action to delete a single User.
	 *
	 * @param int $user_id User ID.
	 * @return void
	 */
	public static function schedule_user_delete( $user_id ) {
		if ( (int) $user_id > 0 ) {
			// Postpone until any pending updates are completed.
			self::schedule_action( 'delete_user', array( $user_id ) );
		}
	}

	/**
	 * Imports a single customer.
	 *
	 * @param int $user_id User ID.
	 * @return void
	 */
	public static function import( $user_id ) {
		CustomersDataStore::update_registered_customer( $user_id );
	}

	/**
	 * Delete a batch of customers.
	 *
	 * @param int $batch_size Number of items to delete.
	 * @return void
	 */
	public static function delete( $batch_size ) {
		global $wpdb;

		$customer_ids = $wpdb->get_col(
			$wpdb->prepare(
				"SELECT customer_id FROM {$wpdb->prefix}wc_customer_lookup ORDER BY customer_id ASC LIMIT %d",
				$batch_size
			)
		);

		foreach ( $customer_ids as $customer_id ) {
			CustomersDataStore::delete_customer( $customer_id );
		}
	}

	/**
	 * Anonymize the customer data for a single order.
	 *
	 * @param int $order_id Order id.
	 * @return void
	 */
	public static function anonymize( $order_id ) {
		global $wpdb;

		$customer_id = $wpdb->get_var(
			$wpdb->prepare( "SELECT customer_id FROM {$wpdb->prefix}wc_order_stats WHERE order_id = %d", $order_id )
		);

		if ( ! $customer_id ) {
			return;
		}

		// Long form query because $wpdb->update rejects [deleted].
		$deleted_text = __( '[deleted]', 'woocommerce' );
		$updated      = $wpdb->query(
			$wpdb->prepare(
				"UPDATE {$wpdb->prefix}wc_customer_lookup
					SET
						user_id = NULL,
						username = %s,
						first_name = %s,
						last_name = %s,
						email = %s,
						country = '',
						postcode = %s,
						city = %s,
						state = %s
					WHERE
						customer_id = %d",
				array(
					$deleted_text,
					$deleted_text,
					$deleted_text,
					'deleted@site.invalid',
					$deleted_text,
					$deleted_text,
					$deleted_text,
					$customer_id,
				)
			)
		);
		// If the customer row was anonymized, flush the cache.
		if ( $updated ) {
			ReportsCache::invalidate();
		}
	}

	/**
	 * Delete the customer data for a single user.
	 *
	 * @param int $user_id User ID.
	 * @return void
	 */
	public static function delete_user( $user_id ) {
		CustomersDataStore::delete_customer_by_user_id( $user_id );
	}
}