{-# LANGUAGE OverloadedStrings #-}

-- Copyright (c) 2013, Diego Souza
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are met:
--
--   * Redistributions of source code must retain the above copyright notice,
--     this list of conditions and the following disclaimer.
--   * Redistributions in binary form must reproduce the above copyright notice,
--     this list of conditions and the following disclaimer in the documentation
--     and/or other materials provided with the distribution.
--   * Neither the name of the <ORGANIZATION> nor the names of its contributors
--     may be used to endorse or promote products derived from this software
--     without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-- SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE

module Main where

import Network
import System.IO
import Nettty.Proxy
import Nettty.Server
import System.Directory
import Control.Concurrent
import System.Environment
import System.Posix.Files

thereAndSocket :: String -> IO Bool
thereAndSocket f = do
  there <- doesFileExist f
  case there of
    True  -> fmap isSocket (getFileStatus f)
    False -> return False

readInt :: String -> Int
readInt = read

main :: IO ()
main = do
  port  <- fmap (readInt . (!! 0)) getArgs
  -- there <- thereAndSocket xfile
  -- when there (removeFile xfile)
  hSetBuffering stdin NoBuffering
  hSetBuffering stdout NoBuffering
  hSetBuffering stderr LineBuffering
  hSetBinaryMode stdin True
  hSetBinaryMode stdout True
  (cmd:args) <- fmap tail getArgs
  p          <- nettty (proc cmd args)
  _          <- forkIO (start p (PortNumber (fromIntegral port)))
  wait p
