module Opts where

import System

import System.Console.GetOpt

import Network

import Data.Maybe ( fromMaybe )

import Miscutils

import System.IO.Unsafe

data GlobalOptions =

	GlobalOptions

	{

		isDedicated :: Bool,

		serverMessage :: String,

		listenPort :: PortNumber

	}

defaultMessage = "<h2><p align=center><a href=\"http://www.hedgewars.org/\">http://www.hedgewars.org/</a></p></h2>"

defaultOptions = (GlobalOptions True defaultMessage 46631)

options :: [OptDescr (GlobalOptions -> GlobalOptions)]

options = [

	Option ['p'] ["port"] (ReqArg readListenPort "PORT") "listen on PORT",

	Option ['d'] ["dedicated"] (ReqArg readDedicated "BOOL") "start as dedicated (True or False)"

	]

readListenPort, readDedicated :: String -> GlobalOptions -> GlobalOptions

readListenPort str opts = opts{listenPort = readPort}

	where

		readPort = fromInteger $ fromMaybe 46631 (maybeRead str :: Maybe Integer)

readDedicated str opts = opts{isDedicated = readDedicated}

	where

		readDedicated = fromMaybe True (maybeRead str :: Maybe Bool)

opts :: IO GlobalOptions

opts = do

	args <- getArgs

	case getOpt Permute options args of

		(o, [], []) -> return $ foldr ($) defaultOptions o

		(_,_,errs) -> ioError (userError (concat errs ++ usageInfo header options))

	where header = "Usage: newhwserv [OPTION...]"

{-# NOINLINE globalOptions #-}

globalOptions = unsafePerformIO opts