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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
module Serverconfig (loadConfig, Config(..), RemoteRef(..)) where
import Data.Aeson (FromJSON, eitherDecode)
import qualified Data.ByteString.Lazy as LB
import Data.Text (Text)
import GHC.Generics (Generic)
import LintConfig (LintConfig')
-- | a reference in a remote git repository
data RemoteRef = RemoteRef
{ repourl :: Text
, reporef :: Text
} deriving (Generic, FromJSON)
type family ConfigRes (b :: Bool) a where
ConfigRes True a = a
ConfigRes False a = FilePath
-- | the server's configuration
data Config l = Config
{ tmpdir :: FilePath
-- ^ dir to clone git things in
, port :: Int
-- ^ port to bind to
, entrypoint :: FilePath
, lintconfig :: ConfigRes l LintConfig'
}
loadConfig :: Config False -> IO (Config True)
loadConfig config = do
loaded <- LB.readFile (lintconfig config) >>= \res ->
case eitherDecode res :: Either String LintConfig' of
Left err -> error $ "config file invalid: " <> err
Right file -> pure file
pure $ config { lintconfig = loaded }
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