90 lines
3.1 KiB
Haskell
90 lines
3.1 KiB
Haskell
{-# LANGUAGE DataKinds #-}
|
|
{-# LANGUAGE DeriveGeneric #-}
|
|
{-# LANGUAGE FlexibleInstances #-}
|
|
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
|
|
{-# LANGUAGE MultiParamTypeClasses #-}
|
|
{-# LANGUAGE OverloadedStrings #-}
|
|
{-# LANGUAGE RankNTypes #-}
|
|
{-# LANGUAGE ScopedTypeVariables #-}
|
|
{-# LANGUAGE TypeOperators #-}
|
|
|
|
module Main where
|
|
|
|
import Control.Monad (liftM2)
|
|
import Control.Monad.IO.Class (liftIO)
|
|
import Data.Aeson (ToJSON (..))
|
|
import Data.List (find)
|
|
import qualified Data.Map as Map (fromList, mapWithKey)
|
|
import Data.Maybe (fromMaybe)
|
|
import Data.Text (Text)
|
|
import GHC.Generics (Generic)
|
|
import Network.HTTP.Client (Manager)
|
|
import Network.HTTP.Client.TLS (newTlsManager)
|
|
import Network.Wai.Handler.Warp (runEnv)
|
|
import Onomap.Stoepel
|
|
import Onomap.Svg (renderMap)
|
|
import Onomap.Types
|
|
import Servant
|
|
import Servant.HTML.Blaze (HTML)
|
|
import Text.Blaze (ToMarkup (..))
|
|
|
|
data Response = Response {color :: Text, areas :: [Area], statistics :: ByArea Double}
|
|
deriving (Generic)
|
|
|
|
instance ToMarkup Response where
|
|
toMarkup response =
|
|
preEscapedToMarkup $
|
|
renderMap
|
|
(color response)
|
|
(areas response)
|
|
(statistics response)
|
|
|
|
instance ToJSON Response where
|
|
toJSON response =
|
|
toJSON $
|
|
Map.mapWithKey
|
|
( \k double ->
|
|
let maybeArea = find ((== k) . key) (areas response)
|
|
in Map.fromList
|
|
[ ("value" :: Text, toJSON double)
|
|
, ("population", toJSON $ fmap population maybeArea)
|
|
, ("name", toJSON $ fmap name maybeArea)
|
|
]
|
|
)
|
|
(getByArea $ statistics response)
|
|
|
|
type OnomapApi =
|
|
Capture "mode" Mode
|
|
:> Capture "name" Text
|
|
:> QueryParam "by" AreaKind
|
|
:> QueryParam "color" Text
|
|
:> Get '[JSON, HTML] Response
|
|
|
|
app :: Manager -> ([Area], [Area]) -> Application
|
|
app manager' (theDistricts, theStates) = serve onomapApi server
|
|
where
|
|
server :: Server OnomapApi
|
|
server = \mode surname maybeAreaKind maybeColor ->
|
|
liftIO $
|
|
runStoepel manager' $ do
|
|
let areaMode = fromMaybe District maybeAreaKind
|
|
computeFunction =
|
|
case mode of
|
|
Relative -> relativeCount
|
|
Absolute -> absoluteCount
|
|
theAreas = case areaMode of
|
|
State -> theStates
|
|
District -> theDistricts
|
|
theStatistics <-
|
|
computeAreaStatistics computeFunction theAreas <$> case areaMode of
|
|
State -> stateStatistics (Just surname)
|
|
District -> districtStatistics (Just surname)
|
|
return Response{color = fromMaybe "black" maybeColor, areas = theAreas, statistics = theStatistics}
|
|
onomapApi :: Proxy OnomapApi
|
|
onomapApi = Proxy
|
|
|
|
main :: IO ()
|
|
main = do
|
|
manager' <- newTlsManager
|
|
runEnv 8081 . app manager' =<< runStoepel manager' (liftM2 (,) districts states)
|