58 lines
2.2 KiB
Haskell
58 lines
2.2 KiB
Haskell
module Network.IRC.Handlers.Core (mkMsgHandler) where
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import ClassyPrelude
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import Control.Monad.Reader (ask)
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import Data.Convertible (convert)
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import Data.Time (addUTCTime)
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import Network.IRC.Types
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import Network.IRC.Util
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mkMsgHandler :: MsgHandlerMaker
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mkMsgHandler = MsgHandlerMaker "core" go
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where
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go _ _ "pingpong" = do
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state <- getCurrentTime >>= newIORef
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return . Just $ newMsgHandler { onMessage = pingPong state }
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go _ _ "help" =
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return . Just $ newMsgHandler { onMessage = help,
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onHelp = return $ singletonMap "!help" helpMsg }
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go _ _ _ = return Nothing
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helpMsg = "Get help. !help or !help <command>"
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pingPong :: MonadMsgHandler m => IORef UTCTime -> Message -> m [Command]
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pingPong state Message { msgDetails = PingMsg { .. }, .. } = do
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io $ atomicWriteIORef state msgTime
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return [PongCmd msg]
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pingPong state Message { msgDetails = PongMsg { .. }, .. } = do
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io $ atomicWriteIORef state msgTime
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return []
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pingPong state Message { msgDetails = IdleMsg { .. }, .. }
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BotConfig { .. } <- ask
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let limit = fromIntegral $ botTimeout `div` 2
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io $ do
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lastComm <- readIORef state
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if addUTCTime limit lastComm < msgTime
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then return [PingCmd . pack . formatTime defaultTimeLocale "%s" $ msgTime]
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else return []
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pingPong _ _ = return []
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help :: MonadMsgHandler m => Message -> m [Command]
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help Message { msgDetails = ChannelMsg { .. }, .. }
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| "!help" == clean msg = do
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BotConfig { .. } <- ask
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let commands = concatMap mapKeys . mapValues $ msgHandlerInfo
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return [ ChannelMsgReply $ "I know these commands: " ++ unwords commands
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, ChannelMsgReply "Type !help <command> to know more about any command"]
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| "!help" `isPrefixOf` msg = do
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BotConfig { .. } <- ask
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let command = dropWhile (== '!') . clean . unwords . drop 1 . words $ msg
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let mHelp = find ((\c -> c == command || c == cons '!' command) . fst)
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. concatMap mapToList . mapValues $ msgHandlerInfo
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return [ChannelMsgReply $ maybe ("No such command found: " ++ command) snd mHelp]
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help _ = return []
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