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{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeFamilies #-}
module Hsm.Web
( Web
, runServer
, runWeb
) where
import Effectful (Dispatch(Static), DispatchOf, Eff, IOE, (:>))
import Effectful.Dispatch.Static (SideEffects(WithSideEffects), StaticRep, evalStaticRep, getStaticRep, unEff, unsafeEff)
import Effectful.Dispatch.Static.Primitive (Env)
import Effectful.Exception (finally)
import Hsm.Cam (Cam, capturePng)
import Hsm.Log (Log, Severity(Info, Trace), logMsg, makeLoggerIO)
import Network.Wai.Handler.Warp (defaultSettings, setLogger)
import Paths_hsm_web (getDataFileName)
import Web.Scotty (Options(settings, verbose), defaultOptions, file, get, liftIO, raw, scottyOpts, setHeader)
data Web (a :: * -> *) (b :: *)
type instance DispatchOf Web = Static WithSideEffects
newtype instance StaticRep Web =
Web Options
server :: (Cam :> es, Log "cam" :> es) => Options -> Env es -> IO ()
server options env = do
index <- getDataFileName "Html/index.html"
scottyOpts options $ do
get "/" $ file index
get "/cam.png" $ do
setHeader "Content-Type" "image/png"
liftIO (unEff capturePng env) >>= raw
runServer :: (Cam :> es, Log "cam" :> es, Log "web" :> es, Web :> es) => Eff es ()
runServer = finally startServer stopServer
where
startServer = do
Web options <- getStaticRep
logMsg @"web" Info "Starting scotty web server"
unsafeEff $ server options
stopServer = logMsg @"web" Info "Stopping scotty web server"
runWeb :: (IOE :> es, Log "scotty" :> es, Log "web" :> es) => Eff (Web : es) a -> Eff es a
runWeb action = do
logMsg @"web" Info "Registering logger for scotty web server"
scottyLogger <- makeLoggerIO @"scotty" >>= return . logRequest
evalStaticRep (Web $ defaultOptions {verbose = 0, settings = setLogger scottyLogger defaultSettings}) action
where
logRequest loggerIO request status fileSize = loggerIO Trace $ unwords [show request, show status, show fileSize]
|
