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{-# LANGUAGE CPP #-}
module LocalChat
( module Chat
, module LocalChat
) where
import Debug.Trace
import Control.Concurrent.STM
import Control.Monad
import Data.Function
import Data.List
import qualified Data.Map as Map
;import Data.Map (Map)
import qualified Data.Text as T
;import Data.Text (Text)
#ifdef THREAD_DEBUG
import Control.Concurrent.Lifted.Instrument
#else
import Control.Concurrent.Lifted
import GHC.Conc (labelThread)
#endif
import DPut
import DebugTag
import Chat
import MUC
forkUntilSignaled :: String -> STM (IO ()) -> IO (IO ())
forkUntilSignaled lbl action = do
quitSignal <- newTVarIO False
t <- forkIO $ do
fix $ \loop -> join $ atomically
$ orElse (do readTVar quitSignal >>= check
return $ return ())
(fmap (>> loop) $ action)
labelThread t lbl
return $ atomically (writeTVar quitSignal True)
chatevents rsvar = do
rs <- readTVar rsvar
if Map.null rs
then retry
else do
ios <- forM rs $ \r -> do
ps <- roomPending r
trace ("roomPending " ++ show ps) $ return ()
case Map.toList ps of
(k,t):ts -> do
roomCommit r k t
return $ do
dput XJabber $ "committed " ++ show (length ts,k,t)
_ -> retry
return $ foldl1 (>>) ios
forkLocalChat :: MUC -> IO (IO ())
forkLocalChat muc = do
(chan, rs) <- atomically $ do
c <- dupTChan (mucChan muc)
rs <- newTVar Map.empty
return (c,rs)
forkUntilSignaled "localchat" $ orElse (chatevents rs) $ do
e <- readTChan chan
case e of
MUCCreate room jid nick r -> modifyTVar' rs $ Map.insert room r
return $ case e of
MUCCreate room jid nick _ ->
dput XJabber $ unwords $ map T.unpack
[ "MUCCreate", room, jid, nick ]
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