module HandlerUtils where

import Control.Monad.Reader

import qualified Data.ByteString.Char8 as B

import RoomsAndClients

import CoreTypes

import Actions

thisClient :: Reader (ClientIndex, IRnC) ClientInfo

thisClient = do

    (ci, rnc) <- ask

    return $ rnc `client` ci

thisRoom :: Reader (ClientIndex, IRnC) RoomInfo

thisRoom = do

    (ci, rnc) <- ask

    let ri = clientRoom rnc ci

    return $ rnc `room` ri

clientNick :: Reader (ClientIndex, IRnC) B.ByteString

clientNick = liftM nick thisClient

roomOthersChans :: Reader (ClientIndex, IRnC) [ClientChan]

roomOthersChans = do

    (ci, rnc) <- ask

    let ri = clientRoom rnc ci

    return $ map (sendChan . client rnc) $ filter (/= ci) (roomClients rnc ri)

roomClientsChans :: Reader (ClientIndex, IRnC) [ClientChan]

roomClientsChans = do

    (ci, rnc) <- ask

    let ri = clientRoom rnc ci

    return $ map (sendChan . client rnc) (roomClients rnc ri)

thisClientChans :: Reader (ClientIndex, IRnC) [ClientChan]

thisClientChans = do

    (ci, rnc) <- ask

    return $ [sendChan (rnc `client` ci)]

answerClient :: [B.ByteString] -> Reader (ClientIndex, IRnC) [Action]

answerClient msg = thisClientChans >>= return . (: []) . flip AnswerClients msg

allRoomInfos :: Reader (a, IRnC) [RoomInfo]

allRoomInfos = liftM ((\irnc -> map (room irnc) $ allRooms irnc) . snd) ask