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module Hsbot.Core
( hsbot
) where
import Control.Concurrent
import Control.Concurrent.Chan ()
import Control.Exception
import Control.Monad.State
import qualified Data.Map as M
import Data.Time
import Prelude hiding (catch)
import System.IO()
import Hsbot.Config
import Hsbot.Irc.Config
import Hsbot.Irc.Core (ircbot)
import Hsbot.Message
import Hsbot.Plugin
-- | The Bot monad
type Bot = StateT BotState IO
-- | An Hsbot state
data BotState = BotState
{ botStartTime :: UTCTime -- the bot's uptime
, botPlugins :: M.Map String PluginState -- Loaded plugins
, botChan :: Chan BotMsg -- The bot's communication channel
, botConfig :: Config -- the bot's starting config
}
-- | Bot's main entry point
hsbot :: Config -> IO ()
hsbot config = do
startTime <- getCurrentTime
putStrLn "[Hsbot] Opening communication channel... "
chan <- newChan :: IO (Chan BotMsg)
putStrLn "[Hsbot] Spawning IrcBot plugins... "
botState <- execStateT spawnIrcPlugins BotState { botStartTime = startTime
, botPlugins = M.empty
, botChan = chan
, botConfig = config }
putStrLn "[Hsbot] Entering main loop... "
botState' <- (execStateT botLoop botState) `catch` (\(_ :: IOException) -> return botState)
return ()
-- | Run the bot main loop
botLoop :: Bot ()
botLoop = forever $ do
chan <- gets botChan
msg <- liftIO $ readChan chan
-- process messages
return ()
-- | spawns IrcPlugins
spawnIrcPlugins :: Bot ()
spawnIrcPlugins = do
config <- gets botConfig
mapM_ (spawnIrcPlugin) (ircConfigs config)
where
spawnIrcPlugin :: IrcConfig -> Bot ()
spawnIrcPlugin config = do
bot <- get
let chan = botChan bot
pchan <- liftIO (newChan :: IO (Chan BotMsg))
threadId <- liftIO $ forkIO (ircbot config chan pchan)
let plugin = PluginState (ircConfigName config) threadId pchan M.empty
plugins = botPlugins bot
put $ bot { botPlugins = M.insert (pluginName plugin) plugin plugins }
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