-- | Config.hs
-- A module which parse config file and contain Config structure for
-- further usage.

module Config (
    Config(..),
    readConfig
) where

import Data.ConfigFile
import System.Directory

import Control.Monad.Error

-- | Config structure.
data Config = Config
    { cusername :: String
    , cpassword :: String
    , cserver :: String
    , cconference :: String
    , cnickname :: String
    , cprivateKey :: String
    , csite :: String
    , curlAdd :: String
    } deriving Show

-- | Read config file in home directory and return conf structure.
readConfig :: String -> IO Config
readConfig filePath = do
  home <- getHomeDirectory
  config <- runErrorT $ do
      conf <- join $ liftIO $ readfile emptyCP (home++"/"++filePath)

      let param = get conf "bot"
      liftM Config (param "username")   `ap`
                   (param "password")   `ap`
                   (param "server")     `ap`
                   (param "conference") `ap`
                   (param "nickname")   `ap`
                   (param "privatekey") `ap`
                   (param "site")       `ap`
                   (param "urladd")
  case config of
    Left e -> error $ "Can't parse config file.\n"++show e
    Right conf -> return conf