{-# LANGUAGE CPP #-}

module Opts

(

    getOpts,

) where

import System.Environment

import System.Console.GetOpt

import Data.Maybe ( fromMaybe )

-------------------

import CoreTypes

import Utils

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

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 -> ServerInfo -> ServerInfo

readListenPort str opts = opts{listenPort = readPort}

    where

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

readDedicated str opts = opts{isDedicated = readDed}

    where

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

getOpts :: ServerInfo -> IO ServerInfo

getOpts opts = do

    args <- getArgs

    case getOpt Permute options args of

        (o, [], []) -> return $ foldr ($) opts{runArgs = args} o

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

    where header = "Usage: hedgewars-server [OPTION...]"