126 lines
5.4 KiB
Haskell
126 lines
5.4 KiB
Haskell
{-# LANGUAGE DeriveDataTypeable #-}
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{-# LANGUAGE GeneralizedNewtypeDeriving #-}
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{-# LANGUAGE NoImplicitPrelude #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RecordWildCards #-}
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{-# LANGUAGE TemplateHaskell #-}
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{-# LANGUAGE TypeFamilies #-}
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module Network.IRC.Handlers.NickTracker (mkMsgHandler) where
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import qualified Data.IxSet as IS
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import qualified Data.UUID as U
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import qualified Data.UUID.V4 as U
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import ClassyPrelude
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import Control.Concurrent.Lifted (Chan)
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import Control.Monad.Reader (ask)
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import Control.Monad.State (get, put)
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import Data.Acid (AcidState, Query, Update, makeAcidic, query, update,
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openLocalState, createArchive)
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import Data.Acid.Local (createCheckpointAndClose)
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import Data.IxSet (getOne, (@=))
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import Network.IRC.Handlers.NickTracker.Types
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import Network.IRC.Types hiding (Nick)
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import Network.IRC.Util
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getByNick :: Nick -> Query NickTracking (Maybe NickTrack)
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getByNick nick = do
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NickTracking { .. } <- ask
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return . getOne $ nickTracking @= nick
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getByCanonicalNick :: CanonicalNick -> Query NickTracking [NickTrack]
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getByCanonicalNick canonicalNick = do
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NickTracking { .. } <- ask
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return . IS.toList $ nickTracking @= canonicalNick
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--getLastSeenOn :: CanonicalNick -> Query NickTracking LastSeenOn
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--getLastSeenOn = liftM (minimumEx . map lastSeenOn) . getByCanonicalNick
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saveNickTrack :: NickTrack -> Update NickTracking ()
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saveNickTrack nt = do
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NickTracking { .. } <- get
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put . NickTracking $ IS.updateIx (nick nt) nt nickTracking
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$(makeAcidic ''NickTracking ['getByNick, 'getByCanonicalNick, 'saveNickTrack])
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nickTrackerMsg :: MonadMsgHandler m => IORef (AcidState NickTracking) -> Message -> m (Maybe Command)
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nickTrackerMsg state = go
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where
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go ChannelMsg { .. } = updateNickTrack user msg msgTime True >> handleCommands msg
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go ActionMsg { .. } = updateNickTrack user msg msgTime True >> return Nothing
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go JoinMsg { .. } = updateNickTrack user "" msgTime False >> return Nothing
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go PartMsg { .. } = updateNickTrack user msg msgTime False >> return Nothing
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go QuitMsg { .. } = updateNickTrack user msg msgTime False >> return Nothing
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go NickMsg { .. } = handleNickChange user newNick msgTime >> return Nothing
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go _ = return Nothing
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updateNickTrack user message msgTime isChat = liftIO $ do
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acid <- readIORef state
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let nck = userNick user
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mnt <- query acid . GetByNick $ Nick nck
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(message', cn) <- case (message, mnt) of
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("", Just (NickTrack { .. })) -> return (lastMessage, canonicalNick)
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(_, Just (NickTrack { .. })) -> return (message, canonicalNick)
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_ -> do
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cn <- map (CanonicalNick . pack . U.toString) U.nextRandom
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return (message, cn)
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let lastMessageOn' = case (isChat, mnt) of
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(True, _) -> msgTime
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(False, Just (NickTrack { .. })) -> lastMessageOn
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(False, Nothing) -> msgTime
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update acid . SaveNickTrack $
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NickTrack (Nick nck) cn (LastSeenOn msgTime) lastMessageOn' message'
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handleNickChange user newNick msgTime = liftIO $ do
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acid <- readIORef state
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let prevNick = userNick user
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mpnt <- query acid . GetByNick $ Nick prevNick
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mnt <- query acid . GetByNick $ Nick newNick
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mInfo <- case (mpnt, mnt) of
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(Nothing, _) -> do
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cn <- map (CanonicalNick . pack . U.toString) U.nextRandom
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return $ Just ("", cn, msgTime)
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(Just nt, Nothing) -> return $ Just (lastMessage nt, canonicalNick nt, lastMessageOn nt)
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_ -> return Nothing
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whenJust mInfo $ \(message, cn, lastMessageOn') ->
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update acid . SaveNickTrack $
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NickTrack (Nick newNick) cn (LastSeenOn msgTime) lastMessageOn' message
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handleCommands message =
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if "!nick" `isPrefixOf` message
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then handleNickCommand state message
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else return Nothing
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handleNickCommand :: MonadMsgHandler m => IORef(AcidState NickTracking) -> Text -> m (Maybe Command)
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handleNickCommand state msg = liftIO $ do
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acid <- readIORef state
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let nck = clean . unwords . drop 1 . words $ msg
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mcn <- liftM (map canonicalNick) . query acid . GetByNick $ Nick nck
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resp <- case mcn of
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Nothing -> return $ "Unknown nick: " ++ nck
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Just cn -> liftIO $ do
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nicks <- liftM (map ((\(Nick n) -> n) . nick)) . query acid . GetByCanonicalNick $ cn
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if length nicks == 1
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then return $ nck ++ " has only one nick"
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else return $ nck ++ "'s other nicks are: " ++ intercalate ", " (filter (/= nck) nicks)
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return . Just . ChannelMsgReply $ resp
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stopNickTracker :: MonadMsgHandler m => IORef (AcidState NickTracking) -> m ()
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stopNickTracker state = liftIO $ do
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acid <- readIORef state
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createArchive acid
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createCheckpointAndClose acid
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mkMsgHandler :: BotConfig -> Chan SomeEvent -> MsgHandlerName -> IO (Maybe MsgHandler)
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mkMsgHandler BotConfig { .. } _ "nicktracker" = do
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state <- liftIO (openLocalState emptyNickTracking >>= newIORef)
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return . Just $ newMsgHandler { onMessage = nickTrackerMsg state
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, onStop = stopNickTracker state
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, onHelp = return $ singletonMap "!nick" helpMsg }
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where
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helpMsg = "Shows the user's other nicks. !nick <user nick>"
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mkMsgHandler _ _ _ = return Nothing
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