-- | Values with a @changeset@ optional string accessor.
module Data.Geo.OSM.Accessor.Changeset where

import Data.Geo.OSM.Accessor.Accessor

class Changeset a where
  changeset :: a -> Maybe String
  setChangeset :: Maybe String -> a -> a

  setChangeset' :: String -> a -> a
  setChangeset' = setChangeset . return

  usingChangeset :: a -> (Maybe String -> Maybe String) -> a
  usingChangeset = changeset `using` setChangeset

  usingChangeset' :: a -> (String -> String) -> a
  usingChangeset' = (. fmap) . usingChangeset