111 lines
3.6 KiB
Haskell
111 lines
3.6 KiB
Haskell
{-# LANGUAGE RecordWildCards, ScopedTypeVariables, NoImplicitPrelude, OverloadedStrings #-}
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module Network.IRC.Client (run) where
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import qualified Data.Text.Format as TF
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import qualified Data.Text.Format.Params as TF
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import ClassyPrelude hiding (log)
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import Control.Concurrent
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import Control.Monad.Reader hiding (forM_)
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import Control.Monad.State hiding (forM_)
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import Network
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import System.IO (hSetBuffering, BufferMode(..))
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import System.Timeout
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import Network.IRC.Handlers
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import Network.IRC.Protocol
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import Network.IRC.Types
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oneSec :: Int
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oneSec = 1000000
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log :: Text -> IO ()
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log msg = getCurrentTime >>= \t -> TF.print "[{}] ** {}\n" $ TF.buildParams (t, msg)
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sendCommand :: Bot -> Command -> IO ()
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sendCommand Bot { .. } reply = do
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let line = lineFromCommand botConfig reply
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TF.hprint socket "{}\r\n" $ TF.Only line
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TF.print "> {}\n" $ TF.Only line
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listen :: IRC ()
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listen = do
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status <- get
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bot@Bot { .. } <- ask
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let nick = botNick botConfig
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nStatus <- liftIO $ do
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when (status == Kicked) $
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threadDelay (5 * oneSec) >> sendCommand bot JoinCmd
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mLine <- map (map initEx) . timeout (oneSec * botTimeout botConfig) . hGetLine $ socket
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case mLine of
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Nothing -> return Disconnected
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Just line -> do
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now <- getCurrentTime
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TF.print "[{}] {}\n" $ TF.buildParams (now, line)
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let message = msgFromLine botConfig now line
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case message of
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JoinMsg { .. } | userNick user == nick -> log "Joined" >> return Joined
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KickMsg { .. } | kicked == nick -> log "Kicked" >> return Kicked
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_ -> do
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forkIO $ case message of
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Ping { .. } -> sendCommand bot $ Pong msg
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ModeMsg { user = Self, .. } -> sendCommand bot JoinCmd
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msg -> forM_ (handlers botConfig) $ \handlerName -> forkIO $ do
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let mHandler = getHandler handlerName
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case mHandler of
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Nothing -> log $ "No handler found with name: " ++ handlerName
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Just handler -> do
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mCmd <- runHandler handler botConfig msg
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case mCmd of
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Nothing -> return ()
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Just cmd -> sendCommand bot cmd
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return status
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put nStatus
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when (nStatus /= Disconnected) listen
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connect :: BotConfig -> IO Bot
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connect botConfig@BotConfig { .. } = do
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log "Connecting ..."
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socket <- connectToWithRetry
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hSetBuffering socket LineBuffering
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hSetBuffering stdout LineBuffering
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log "Connected"
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return $ Bot botConfig socket
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where
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connectToWithRetry = connectTo server (PortNumber (fromIntegral port))
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`catch` (\(e :: SomeException) -> do
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log ("Error while connecting: " ++ pack (show e) ++ ". Waiting.")
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threadDelay (5 * oneSec)
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connectToWithRetry)
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disconnect :: Bot -> IO ()
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disconnect bot = do
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log "Disconnecting ..."
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hClose . socket $ bot
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log "Disconnected"
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run :: BotConfig -> IO ()
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run botConfig = withSocketsDo $ do
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log "Running with config:"
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print botConfig
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status <- run_
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case status of
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Disconnected -> log "Connection timed out" >> run botConfig
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Errored -> return ()
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_ -> error "Unsupported status"
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where
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run_ = bracket (connect botConfig) disconnect $ \bot ->
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go bot `catch` \(e :: SomeException) -> do
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log $ "Exception! " ++ pack (show e)
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return Errored
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go bot = do
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sendCommand bot NickCmd
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sendCommand bot UserCmd
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runIRC bot Connected listen
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