58 lines
2.0 KiB
Haskell
58 lines
2.0 KiB
Haskell
{-# LANGUAGE NoImplicitPrelude #-}
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{-# LANGUAGE OverlappingInstances #-}
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{-# LANGUAGE OverloadedStrings #-}
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module Main (main) where
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import qualified Data.Configurator as CF
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import ClassyPrelude hiding (try, getArgs)
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import Control.Concurrent.Lifted (myThreadId)
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import Control.Exception.Lifted (try, throwTo, AsyncException (UserInterrupt))
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import Data.Configurator.Types (Configured (..), ConfigError (..), Value (List), KeyError (..))
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import System.Environment (getArgs, getProgName)
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import System.Exit (exitFailure)
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import System.Posix.Signals (installHandler, sigINT, sigTERM, Handler (Catch))
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import Network.IRC.Types
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import Network.IRC.Client
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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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main :: IO ()
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main = do
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args <- getArgs
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prog <- getProgName
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when (length args < 1) $ do
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putStrLn $ "Usage: " ++ pack prog ++ " <config file path>"
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exitFailure
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mainThreadId <- myThreadId
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installHandler sigINT (Catch $ throwTo mainThreadId UserInterrupt) Nothing
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installHandler sigTERM (Catch $ throwTo mainThreadId UserInterrupt) Nothing
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let configFile = headEx args
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loadBotConfig configFile >>= run
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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 $ BotConfig <$>
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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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CF.require cfg "nick" <*>
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CF.require cfg "timeout" <*>
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CF.require cfg "msghandlers" <*>
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pure cfg
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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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