{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE TemplateHaskell #-}

-------------------------------------------------------------------

-- |
-- Module       : Data.Geospatial.Internal.Geometry.GeoMultiPoint
-- Copyright    : (C) 2014-2021 HS-GeoJSON Project
-- License      : BSD-style (see the file LICENSE.md)
-- Maintainer   : Andrew Newman
module Data.Geospatial.Internal.Geometry.GeoMultiPoint
  ( -- * Type
    GeoMultiPoint (..),

    -- * Lenses
    unGeoMultiPoint,

    -- * To Points
    splitGeoMultiPoint,
    mergeGeoPoints,
  )
where

import Control.DeepSeq
import Control.Lens (makeLenses)
import Control.Monad (mzero)
import qualified Data.Aeson as Aeson
import Data.Geospatial.Internal.BasicTypes
import Data.Geospatial.Internal.Geometry.Aeson
import Data.Geospatial.Internal.Geometry.GeoPoint
import qualified Data.Sequence as Sequence
import GHC.Generics (Generic)

newtype GeoMultiPoint = GeoMultiPoint {_unGeoMultiPoint :: Sequence.Seq GeoPositionWithoutCRS} deriving (Show, Eq, Generic, NFData)

makeLenses ''GeoMultiPoint

-- | Split GeoMultiPoint coordinates into multiple GeoPoints
splitGeoMultiPoint :: GeoMultiPoint -> Sequence.Seq GeoPoint
splitGeoMultiPoint = fmap GeoPoint . _unGeoMultiPoint

-- | Merge multiple GeoPoints into one GeoMultiPoint
mergeGeoPoints :: Sequence.Seq GeoPoint -> GeoMultiPoint
mergeGeoPoints = GeoMultiPoint . fmap _unGeoPoint

-- instances

instance Aeson.ToJSON GeoMultiPoint where
  --  toJSON :: a -> Value
  toJSON = makeGeometryGeoAeson "MultiPoint" . _unGeoMultiPoint

instance Aeson.FromJSON GeoMultiPoint where
  --  parseJSON :: Value -> Parser a
  parseJSON (Aeson.Object o) = readGeometryGeoAeson "MultiPoint" GeoMultiPoint o
  parseJSON _ = mzero