module Utils where

import Control.Concurrent

import Control.Concurrent.STM

import Data.Char

import Data.Word

import qualified Data.Map as Map

import qualified Data.IntMap as IntMap

import qualified Data.Set as Set

import Data.ByteString.Internal (w2c)

import Numeric

import Network.Socket

import System.IO

import qualified Data.List as List

import Control.Monad

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

import qualified Codec.Binary.Base64 as Base64

import CoreTypes

sockAddr2String (SockAddrInet6 _ _ (a, b, c, d) _) =

        $ List.intersperse (\a -> ':':a)

        $ concatMap (\n -> (\(a, b) -> [showHex a, showHex b]) $ divMod n 65536) [a, b, c, d]) []

    where

        removeLength (x:xs) = if length xs == fromIntegral x then Just xs else Nothing

        removeLength _ = Nothing

    where

        check Nothing = (False, False)

        check (Just (m:ms)) = (m `Set.member` legalMessages, m == '+')

        check _ = (False, False)

        legalMessages = Set.fromList $ "M#+LlRrUuDdZzAaSjJ,sFNpPwtghb12345" ++ slotMessages

        slotMessages = "\128\129\130\131\132\133\134\135\136\137\138"

maybeRead :: Read a => String -> Maybe a

maybeRead s = case reads s of

    [(x, rest)] | all isSpace rest -> Just x

    _         -> Nothing

    where

        hhsInfo = concatMap (\(HedgehogInfo name hat) -> [name, hat]) $ hedgehogs team

modifyTeam :: TeamInfo -> RoomInfo -> RoomInfo

modifyTeam team room = room{teams = replaceTeam team $ teams room}

    where

    replaceTeam _ [] = error "modifyTeam: no such team"

    replaceTeam team (t:teams) =

        if teamname team == teamname t then

            team : teams

        else

            t : replaceTeam team teams

protoNumber2ver 17 = "0.9.7-dev"

protoNumber2ver 19 = "0.9.7"

protoNumber2ver 20 = "0.9.8-dev"

protoNumber2ver 21 = "0.9.8"

protoNumber2ver 22 = "0.9.9-dev"

protoNumber2ver 23 = "0.9.9"

protoNumber2ver 24 = "0.9.10-dev"

protoNumber2ver 25 = "0.9.10"

protoNumber2ver 26 = "0.9.11-dev"

protoNumber2ver 27 = "0.9.11"

protoNumber2ver 28 = "0.9.12-dev"

protoNumber2ver 29 = "0.9.12"

protoNumber2ver 30 = "0.9.13-dev"

protoNumber2ver 31 = "0.9.13"

protoNumber2ver 32 = "0.9.14-dev"

protoNumber2ver _ = "Unknown"

askFromConsole :: String -> IO String

askFromConsole msg = do

    putStr msg

    hFlush stdout

    getLine