{-# LANGUAGE OverloadedStrings #-}

module TiledAbstract where

import           Data.Maybe (fromMaybe)
import           Data.Proxy (Proxy)
import           Data.Text  (Text)
import           Tiled      (Layer (..), Property (..), PropertyValue (..),
                             Tiledmap (..), Tileset (..))

class HasProperties a where
  getProperties :: a -> [Property]
  adjustProperties :: ([Property] -> Maybe [Property]) -> a -> a

instance HasProperties Layer where
  getProperties = fromMaybe mempty . layerProperties
  adjustProperties f layer = layer
    { layerProperties = f (getProperties layer) }

instance HasProperties Tileset where
  getProperties = fromMaybe mempty . tilesetProperties
  adjustProperties f tileset = tileset
    { tilesetProperties = f (getProperties tileset) }

instance HasProperties Tiledmap where
  getProperties = fromMaybe mempty . tiledmapProperties
  adjustProperties f tiledmap = tiledmap
    { tiledmapProperties = f (getProperties tiledmap) }

class HasTypeName a where
  typeName :: Proxy a -> Text
instance HasTypeName Layer where
  typeName _ = "layer"
instance HasTypeName Tileset where
  typeName _ = "tileset"
instance HasTypeName Property where
  typeName _ = "property"

class HasName a where
  getName :: a -> Text
instance HasName Layer where
  getName = layerName
instance HasName Tileset where
  getName = tilesetName
instance HasName Property where
  getName (Property n _) = n

class IsProperty a where
  asProperty :: a -> PropertyValue
instance IsProperty PropertyValue where
  asProperty = id
  {-# INLINE asProperty #-}
instance IsProperty Text where
  asProperty = StrProp
  {-# INLINE asProperty #-}