103 lines
3.8 KiB
Haskell
103 lines
3.8 KiB
Haskell
{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE NoImplicitPrelude #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RecordWildCards #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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module Network.IRC.Handlers.MessageLogger (mkMsgHandler) where
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import qualified Data.Configurator as C
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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 (try, (</>), (<.>), FilePath, log)
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import Control.Exception.Lifted
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import Control.Monad.Reader
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import Data.Time (diffDays)
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import System.Directory
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import System.FilePath
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import System.IO (openFile, IOMode(..), hSetBuffering, BufferMode(..))
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import Network.IRC.Types
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type LoggerState = Maybe (Handle, Day)
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mkMsgHandler :: BotConfig -> MsgHandlerName -> IO (Maybe MsgHandler)
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mkMsgHandler botConfig "messagelogger" = do
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state <- liftIO $ newIORef Nothing
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initMessageLogger botConfig state
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return . Just $ newMsgHandler { msgHandlerRun = flip messageLogger state
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, msgHandlerStop = exitMessageLogger state }
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mkMsgHandler _ _ = return Nothing
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getLogFilePath :: BotConfig -> IO FilePath
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getLogFilePath BotConfig { .. } = do
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logFileDir <- C.require config "messagelogger.logdir"
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createDirectoryIfMissing True logFileDir
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return $ logFileDir </> unpack (channel ++ "-" ++ botNick) <.> "log"
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openLogFile :: FilePath -> IO Handle
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openLogFile logFilePath = do
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logFileHandle <- openFile logFilePath AppendMode
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hSetBuffering logFileHandle LineBuffering
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return logFileHandle
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initMessageLogger :: BotConfig -> IORef LoggerState -> IO ()
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initMessageLogger botConfig state = do
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logFilePath <- getLogFilePath botConfig
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logFileHandle <- openLogFile logFilePath
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time <- getModificationTime logFilePath
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atomicWriteIORef state $ Just (logFileHandle, utctDay time)
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exitMessageLogger :: MonadMsgHandler m => IORef LoggerState -> m ()
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exitMessageLogger state = liftIO $ do
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mHandle <- readIORef state
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case mHandle of
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Nothing -> return ()
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Just (logFileHandle, _ :: Day) -> hClose logFileHandle
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withLogFile :: MonadMsgHandler m => (Handle -> IO ()) -> IORef LoggerState -> m (Maybe Command)
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withLogFile action state = do
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botConfig <- ask
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liftIO $ do
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Just (logFileHandle, prevDay) <- readIORef state
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curDay <- map utctDay getCurrentTime
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let diff = diffDays curDay prevDay
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logFileHandle' <- if diff >= 1
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then do
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hClose logFileHandle
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logFilePath <- getLogFilePath botConfig
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mask_ $ do
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copyFile logFilePath (logFilePath <.> show prevDay)
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removeFile logFilePath
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openLogFile logFilePath
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else return logFileHandle
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action logFileHandle'
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atomicWriteIORef state $ Just (logFileHandle', curDay)
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return Nothing
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messageLogger :: MonadMsgHandler m => Message -> IORef LoggerState -> m (Maybe Command)
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messageLogger message = go message
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where
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go ChannelMsg { .. } = log "<{}> {}" [userNick user, msg]
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go ActionMsg { .. } = log "<{}> {} {}" [userNick user, userNick user, msg]
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go KickMsg { .. } = log "** {} KICKED {} :{}" [userNick user, kickedNick, msg]
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go JoinMsg { .. } = log "** {} JOINED" [userNick user]
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go PartMsg { .. } = log "** {} PARTED :{}" [userNick user, msg]
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go QuitMsg { .. } = log "** {} QUIT :{}" [userNick user, msg]
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go NickMsg { .. } = log "** {} CHANGED NICK TO {}" [userNick user, nick]
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go NamesMsg { .. } = log "** USERS {}" [unwords nicks]
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go _ = const $ return Nothing
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log format args = withLogFile $ \logFile ->
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TF.hprint logFile ("[{}] " ++ format ++ "\n") $ TF.buildParams (fmtTime (msgTime message) : args)
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fmtTime = pack . formatTime defaultTimeLocale "%F %T"
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--messageLogger IdleMsg = const . liftIO $ do
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-- now <- getCurrentTime
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-- return . Just . MessageCmd $
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