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|
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE LambdaCase #-}
import Control.Concurrent
import Control.Concurrent.STM
import Control.Monad.Fix
import Control.Monad.IO.Class
import Control.Monad.Trans.Resource (runResourceT)
import Data.Monoid
import System.Environment
import System.Posix.Signals
import ConsoleWriter
import Presence
import XMPPServer
main :: IO ()
main = runResourceT $ do
args <- liftIO getArgs
let verbosity = getSum $ flip foldMap args $ \case
('-':xs) -> Sum $ length (filter (=='-') xs)
_ -> mempty
cw <- liftIO newConsoleWriter
state <- liftIO $ newPresenceState cw
sv <- xmppServer (presenceHooks state verbosity)
liftIO $ do
atomically $ putTMVar (server state) sv
quitVar <- newEmptyTMVarIO
installHandler sigTERM (CatchOnce (atomically $ putTMVar quitVar True)) Nothing
installHandler sigINT (CatchOnce (atomically $ putTMVar quitVar True)) Nothing
forkIO $ do
let console = cwPresenceChan $ consoleWriter state
fix $ \loop -> do
what <- atomically
$ orElse (do (client,stanza) <- takeTMVar console
return $ do informClientPresence0 state Nothing client stanza
loop)
(do readTMVar quitVar
return $ return ())
what
quitMessage <- atomically $ takeTMVar quitVar
putStrLn "goodbye."
return ()
|
