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|
{-# Language QuasiQuotes #-}
module Fig.Monitor.IRC where
import Fig.Prelude
import qualified Data.Text as Text
import qualified Data.ByteString.Base64 as BS.Base64
import Lens.Micro ((%~), (.~), (^.))
import qualified Control.Concurrent as Conc
import qualified Control.Concurrent.Chan as Chan
import qualified Network.IRC.Client as IRC
import Fig.Utils.SExpr
import Fig.Bus.Client
import Fig.Monitor.IRC.Utils
data OutgoingMessage = OutgoingMessage
{ user :: Text
, msg :: Text
}
srcUser :: IRC.Source a -> Maybe a
srcUser (IRC.Channel _ user) = Just user
srcUser (IRC.User user) = Just user
srcUser _ = Nothing
ircBot :: Config -> (Text, Text) -> IO ()
ircBot cfg busAddr = do
outgoing <- Chan.newChan @OutgoingMessage
mircst <- Conc.newEmptyMVar
void . Conc.forkIO $ Conc.readMVar mircst >>= \ircst -> forever $ do
o <- liftIO $ Chan.readChan outgoing
log $ "Sending: " <> o.msg <> " (from " <> o.user <> ")"
let msg = IRC.Privmsg cfg.sendchannel . Right . Text.take 400 $ mconcat
[ "<", o.user, "> "
, Text.replace "\n" " " o.msg
]
IRC.runIRCAction (IRC.send msg) ircst
busClient busAddr
(\cmds -> do
cmds.subscribe [sexp|(monitor irc chat outgoing)|]
let handler = IRC.EventHandler
( \case
ev
| IRC.Privmsg _ (Right msg) <- ev ^. IRC.message -> Just msg
| otherwise -> Nothing
)
( \src msg -> case srcUser src of
Just user -> do
log $ "Received: " <> msg <> " (from " <> user <> ")"
liftIO $ cmds.publish [sexp|(monitor irc chat incoming)|]
[ SExprString . BS.Base64.encodeBase64 . encodeUtf8 $ user
, SExprList []
, SExprString . BS.Base64.encodeBase64 . encodeUtf8 $ msg
]
Nothing -> pure ()
)
ircst <- IRC.newIRCState
( IRC.tlsConnection (IRC.WithDefaultConfig (encodeUtf8 cfg.host) cfg.port)
-- ( IRC.plainConnection (encodeUtf8 cfg.host) cfg.port
)
( IRC.defaultInstanceConfig cfg.nick
& IRC.handlers %~ (handler:)
& IRC.channels .~ cfg.channels
)
()
Conc.putMVar mircst ircst
IRC.runClientWith ircst
)
(\_cmds d -> do
case d of
SExprList [ev, SExprString euser, SExprString emsg]
| ev == [sexp|(monitor irc chat outgoing)|]
, Right user <- decodeUtf8 <$> BS.Base64.decodeBase64 (encodeUtf8 euser)
, Right msg <- decodeUtf8 <$> BS.Base64.decodeBase64 (encodeUtf8 emsg) -> do
Chan.writeChan outgoing OutgoingMessage { user = user, msg = msg }
_ -> log $ "Invalid outgoing message: " <> tshow d
)
(pure ())
|
