mateamt/src/Main.hs

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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeFamilies #-}
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module Main where
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import Servant
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import Servant.Server.Experimental.Auth
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import Data.Time.Clock
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import Data.ByteString.Random
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import Data.Set (empty)
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import Database.PostgreSQL.Simple
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import Network.Wai
import Network.Wai.Logger
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import Network.Wai.Handler.Warp
import Opaleye
import Control.Monad.IO.Class (liftIO)
import Control.Monad (void)
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import Control.Monad.Reader
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import Control.Concurrent.STM.TVar
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-- internal imports
import API
import Model as M
import Types
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main :: IO ()
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main = do
conn <- connectPostgreSQL
"host='localhost' port=5432 dbname='mateamt' user='mateamt' password='mateamt'"
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store <- newTVarIO empty
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execute_ conn initUser
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execute_ conn initBeverage
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execute_ conn initToken
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withStdoutLogger $ \log -> do
let settings = setPort 3000 $ setLogger log defaultSettings
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initState = ReadState
{ rsConnection = conn
, rsTicketStore = store
}
runSettings settings (app initState)
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app :: ReadState -> Application
-- app conn = serveWithContext userApi genAuthServerContext (users conn)
app initState = serveWithContext userApi genAuthServerContext $
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hoistServer userApi (`runReaderT` initState) users
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userApi :: Proxy UserAPI
userApi = Proxy
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genAuthServerContext :: Context (AuthHandler Request Bool ': '[])
genAuthServerContext = authHandler Servant.:. EmptyContext
type instance AuthServerData (AuthProtect "header-auth") = Bool
authHandler :: AuthHandler Request Bool
authHandler = mkAuthHandler handler
where
handler req = do
let headers = requestHeaders req
res = case lookup "Authorization" headers of
Just _ -> True
_ -> False
return res
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users :: ServerT UserAPI (ReaderT ReadState Handler)
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users =
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( userList :<|>
userNew :<|>
userUpdate
) :<|>
( authGet :<|>
authSend
)
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where
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userList :: Maybe Refine -> Bool -> MateHandler [User]
userList ref sw = liftIO $ do
conn <- rsConnection <$> ask
userSelect conn ref sw
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userNew :: UserSubmit -> MateHandler Int
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userNew us = liftIO $ do
now <- getCurrentTime
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randSalt <- random 8
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conn <- rsConnection <$> ask
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head <$> runInsert_ conn (insertUser us (utctDay now) randSalt)
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userUpdate :: (Int, UserSubmit) -> MateHandler ()
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userUpdate (id, us) = liftIO $ do
now <- getCurrentTime
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conn <- rsConnection <$> ask
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void $ runUpdate_ conn (updateUser id us (utctDay now))
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authGet :: Int -> MateHandler AuthInfo
authGet id =
getUserAuthInfo id
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authSend :: AuthRequest -> MateHandler AuthResult
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authSend _ = liftIO $ Granted <$> AuthToken <$> random 8