netserver/Miscutils.hs
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module Miscutils where
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import IO
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import Control.Concurrent.STM
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import Data.Word
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import Data.Char
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import Data.List
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import Maybe (fromJust)
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data ClientInfo =
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 ClientInfo
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	{
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		chan :: TChan [String],
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		handle :: Handle,
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		nick :: String,
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		protocol :: Word16,
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		room :: String,
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		isMaster :: Bool
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	}
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instance Eq ClientInfo where
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	a1 == a2 = handle a1 == handle a2
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data TeamInfo =
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	TeamInfo
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	{
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		teamname :: String
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	}
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data RoomInfo =
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	RoomInfo
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	{
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		name :: String,
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		password :: String,
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		teams :: [TeamInfo]
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	}
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type ClientsTransform = [ClientInfo] -> [ClientInfo]
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type RoomsTransform = [RoomInfo] -> [RoomInfo]
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type HandlesSelector = ClientInfo -> [ClientInfo] -> [RoomInfo] -> [Handle]
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type CmdHandler = ClientInfo -> [ClientInfo] -> [RoomInfo] -> [String] -> (ClientsTransform, RoomsTransform, HandlesSelector, [String])
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roomByName :: String -> [RoomInfo] -> RoomInfo
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roomByName roomName rooms = fromJust $ find (\room -> roomName == name room) rooms
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tselect :: [ClientInfo] -> STM ([String], ClientInfo)
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tselect = foldl orElse retry . map (\ci -> (flip (,) ci) `fmap` readTChan (chan ci))
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maybeRead :: Read a => String -> Maybe a
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maybeRead s = case reads s of
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	[(x, rest)] | all isSpace rest -> Just x
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	_         -> Nothing
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deleteBy2t :: (a -> b -> Bool) -> b -> [a] -> [a]
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deleteBy2t _  _ [] = []
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deleteBy2t eq x (y:ys) = if y `eq` x then ys else y : deleteBy2t eq x ys
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deleteFirstsBy2t :: (a -> b -> Bool) -> [a] -> [b] -> [a]
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deleteFirstsBy2t eq =  foldl (flip (deleteBy2t eq))
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sameRoom :: HandlesSelector
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sameRoom client clients rooms = map handle $ filter (\ci -> room ci == room client) clients
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othersInRoom :: HandlesSelector
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othersInRoom client clients rooms = map handle $ filter (client /=) $ filter (\ci -> room ci == room client) clients
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fromRoom :: String -> HandlesSelector
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fromRoom roomName _ clients _ = map handle $ filter (\ci -> room ci == roomName) clients
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clientOnly :: HandlesSelector
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clientOnly client _ _ = [handle client]
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noChangeClients :: ClientsTransform
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noChangeClients a = a
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modifyClient :: ClientInfo -> ClientsTransform
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modifyClient client (cl:cls) =
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	if cl == client then
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		client : cls
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	else
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		cl : (modifyClient client cls)
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noChangeRooms :: RoomsTransform
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noChangeRooms a = a
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addRoom :: RoomInfo -> RoomsTransform
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addRoom room rooms = room:rooms
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removeRoom :: String -> RoomsTransform
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removeRoom roomname rooms = filter (\rm -> roomname /= name rm) rooms
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badCmd :: [String]
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badCmd = ["ERROR", "Bad command, state or incorrect parameter"]