{-# LANGUAGE OverloadedStrings #-}

module HWProtoCore where

import Control.Monad.Reader

import Data.Maybe

import qualified Data.ByteString.Char8 as B

import qualified Data.List as L

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

import CoreTypes

import Actions

import HWProtoNEState

import HWProtoLobbyState

import HWProtoInRoomState

import HandlerUtils

import RoomsAndClients

import Utils

handleCmd, handleCmd_loggedin :: CmdHandler

handleCmd ["PING"] = answerClient ["PONG"]

handleCmd ("QUIT" : xs) = return [ByeClient msg]

    where

        msg = if not $ null xs then head xs else loc "bye"

handleCmd ["PONG"] = do

    cl <- thisClient

    if pingsQueue cl == 0 then

        return [ProtocolError "Protocol violation"]

        else

        return [ModifyClient (\c -> c{pingsQueue = pingsQueue c - 1})]

handleCmd ("CMD" : params) =

    let c = concatMap B.words params in

        if not $ null c then

            h $ (upperCase . head $ c) : tail c

            else

            return []

    where

        h ["DELEGATE", n] = handleCmd ["DELEGATE", n]

        h ["STATS"] = handleCmd ["STATS"]

        h c = return [Warning . B.concat . L.intersperse " " $ "Unknown cmd" : c]

handleCmd cmd = do

    (ci, irnc) <- ask

    if logonPassed (irnc `client` ci) then

        handleCmd_loggedin cmd

        else

        handleCmd_NotEntered cmd

handleCmd_loggedin ["INFO", asknick] = do

    (_, rnc) <- ask

    maybeClientId <- clientByNick asknick

    isAdminAsking <- liftM isAdministrator thisClient

    let noSuchClient = isNothing maybeClientId

    let clientId = fromJust maybeClientId

    let cl = rnc `client` fromJust maybeClientId

    let roomId = clientRoom rnc clientId

    let clRoom = room rnc roomId

    let roomMasterSign = if isMaster cl then "@" else ""

    let adminSign = if isAdministrator cl then "@" else ""

    let rInfo = if roomId /= lobbyId then B.concat [roomMasterSign, "room ", name clRoom] else adminSign `B.append` "lobby"

    let roomStatus = if isJust $ gameInfo clRoom then

            if teamsInGame cl > 0 then "(playing)" else "(spectating)"

            else

            ""

    let hostStr = if isAdminAsking then host cl else cutHost $ host cl

    if noSuchClient then

        return []

        else

        answerClient [

            "INFO",

            nick cl,

            B.concat ["[", hostStr, "]"],

            protoNumber2ver $ clientProto cl,

            B.concat ["[", rInfo, "]", roomStatus]

            ]

handleCmd_loggedin cmd = do

    (ci, rnc) <- ask

    if clientRoom rnc ci == lobbyId then

        handleCmd_lobby cmd

        else

        handleCmd_inRoom cmd