39 lines
1.5 KiB
Haskell
39 lines
1.5 KiB
Haskell
{-# LANGUAGE OverlappingInstances #-}
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module Network.IRC.Config (loadBotConfig) where
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import qualified Data.Configurator as CF
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import ClassyPrelude
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import Data.Configurator.Types (Configured (..), Value (List), ConfigError (..), KeyError (..))
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import Network.IRC.Handlers
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import Network.IRC.Types
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instance Configured a => Configured [a] where
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convert (List xs) = Just . mapMaybe convert $ xs
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convert _ = Nothing
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loadBotConfig :: String -> IO BotConfig
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loadBotConfig configFile = do
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eCfg <- try $ CF.load [CF.Required configFile]
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case eCfg of
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Left (ParseError _ _) -> error "Error while loading config"
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Right cfg -> do
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eBotConfig <- try $ do
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handlers :: [Text] <- CF.require cfg "msghandlers"
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let handlerInfo = foldl' (\m h -> insertMap h mempty m) mempty handlers
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botConfig <- newBotConfig <$>
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CF.require cfg "server" <*>
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CF.require cfg "port" <*>
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CF.require cfg "channel" <*>
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(Nick <$> CF.require cfg "nick") <*>
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CF.require cfg "timeout" <*>
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pure handlerInfo <*>
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pure cfg
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return botConfig { msgHandlerMakers = allMsgHandlerMakers }
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case eBotConfig of
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Left (KeyError k) -> error $ "Error while reading key from config: " ++ unpack k
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Right botConf -> return botConf
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