module Network.EngineIO.Snap (snapAPI) where
import Control.Applicative
import qualified Control.Monad.CatchIO as MonadCatchIO
import qualified Data.Attoparsec.Enumerator as Attoparsec
import qualified Data.ByteString.Builder as Builder
import qualified Data.HashMap.Strict as HashMap
import qualified Data.Map.Lazy as LMap
import qualified Network.EngineIO as EIO
import qualified Network.WebSockets.Snap as Snap
import qualified Snap.Core as Snap
snapAPI :: Snap.MonadSnap m => EIO.ServerAPI m
snapAPI = EIO.ServerAPI
{ EIO.srvTerminateWithResponse = \code ct body -> do
Snap.modifyResponse $ Snap.setResponseCode code . Snap.setContentType ct
Snap.writeLBS $ Builder.toLazyByteString body
Snap.getResponse >>= Snap.finishWith
, EIO.srvGetQueryParams =
LMap.foldlWithKey' (\m k v -> HashMap.insert k v m) HashMap.empty
<$> Snap.getQueryParams
, EIO.srvParseRequestBody =
fmap (either (\e@Attoparsec.ParseError{} -> Left (show e))
Right) .
MonadCatchIO.try . Snap.runRequestBody . Attoparsec.iterParser
, EIO.srvGetRequestMethod = do
m <- Snap.getsRequest Snap.rqMethod
return $ case m of
Snap.GET -> "GET"
Snap.POST -> "POST"
Snap.HEAD -> "HEAD"
Snap.PUT -> "PUT"
Snap.DELETE -> "DELETE"
Snap.TRACE -> "TRACE"
Snap.OPTIONS -> "OPTIONS"
Snap.CONNECT -> "CONNECT"
Snap.PATCH -> "PATCH"
Snap.Method method -> method
, EIO.srvRunWebSocket = Snap.runWebSocketsSnap
}