/
Server.hs
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/
Server.hs
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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE OverloadedStrings #-}
module Main(main) where
import Data.Aeson
import Data.Text
import Data.String (fromString)
import Control.Monad.Except
import Control.Monad.Reader
import GHC.Generics (Generic)
import Servant
import Service as GamesService
import qualified Data.ByteString.Char8 as B
import Network.Wai.Handler.Warp
import Types.Game
type GamesAPI = "games" :> Get '[JSON] [Game]
:<|> "games" :> Capture "id" GameId :> Get '[JSON] Game
:<|> "games" :> Capture "id" GameId :> ReqBody '[JSON] UpdateGameParams :> Put '[JSON] Game
data UpdateGameParams = UpdateGameParams
{ ugpSatus :: !FixtureStatusShort
, ugpWinnerTeamId :: !TeamId
} deriving Generic
instance FromJSON UpdateGameParams
instance ToJSON UpdateGameParams
gamesAPI :: Proxy GamesAPI
gamesAPI = Proxy
gamesServer :: Server GamesAPI
gamesServer = games
:<|> gameById
:<|> сhangeGameState
where
games:: Handler [Game]
games = do
gamesE <- liftIO $ runExceptT $ GamesService.getGames
case gamesE of
Left e -> throwError err500{errBody=fromString e}
Right games -> return games
gameById:: GameId -> Handler Game
gameById id = do
gameM <- liftIO $ runExceptT (GamesService.getGameById id)
case gameM of
Left e -> throwError err404{errBody=fromString e}
Right game -> return game
сhangeGameState:: GameId -> UpdateGameParams -> Handler Game
сhangeGameState gameId updateParams = do
game <- liftIO $ runExceptT $ updateGameState (ugpWinnerTeamId updateParams) (ugpSatus updateParams) gameId
case game of
Left e -> throwError err500{errBody=fromString e}
Right game -> return game
gamesApp :: Application
gamesApp = serve gamesAPI gamesServer
main :: IO ()
main = do
runExceptT $ createInitialGames
run 8081 gamesApp