module Hulk.Log 
    (doing
    ,tell
    ,performing
    ,incoming
    ,outgoing
    ,note)
    where

import Control.Monad.Reader
import Control.Concurrent
import System.IO
import Control.Monad.IO
import qualified System.IO.UTF8 as UTF8

import Hulk.Types
import Hulk.Config

instance Loggable Hulk where
  tell str = do
    h <- asks envTellHandle
    col <- (*2) `fmap` asks envLogColumn
    io $ withMVar h $ \h -> hPutStrLn h $ replicate col ' ' ++ str

instance Loggable IRC where
  tell str = liftHulk $ tell str

performing :: String -> Hulk a -> Hulk a
performing str m = do 
  doing str
  v <- indent  m
  tell "Done."
  return v

doing :: String -> Hulk ()
doing str = tell $ str ++ " ..."

indent :: Hulk a -> Hulk a
indent = local inc where
  inc env = env { envLogColumn = envLogColumn env + 1 }

incoming :: String -> IRC ()
incoming str = tell $ "<- " ++ str

outgoing :: String -> IRC ()
outgoing str = tell $ "-> " ++ str

note :: String -> IRC ()
note str = tell $ "Notice: " ++ str