{-# LANGUAGE OverloadedStrings #-}

module HWProtoLobbyState where

import qualified Data.Map as Map

import qualified Data.IntSet as IntSet

import qualified Data.Foldable as Foldable

import Data.Maybe

import Data.List

import Data.Word

import Control.Monad.Reader

import qualified Data.ByteString.Char8 as B

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

import CoreTypes

import Actions

import Utils

import HandlerUtils

import RoomsAndClients

    where

        toAnswer team =

handleCmd_lobby :: CmdHandler

handleCmd_lobby ["LIST"] = do

    (ci, irnc) <- ask

    let cl = irnc `client` ci

    rooms <- allRoomInfos

    let roomsInfoList = concatMap (roomInfo irnc) . filter (\r -> (roomProto r == clientProto cl) && not (isRestrictedJoins r))

    return [AnswerClients [sendChan cl] ("ROOMS" : roomsInfoList rooms)]

    where

        roomInfo irnc room = [

                showB $ gameinprogress room,

                name room,

                showB $ playersIn room,

                showB $ length $ teams room,

                nick $ irnc `client` masterID room,

                head (Map.findWithDefault ["+gen+"] "MAP" (params room)),

                head (Map.findWithDefault ["Default"] "SCHEME" (params room)),

                head (Map.findWithDefault ["Default"] "AMMO" (params room))

                ]

handleCmd_lobby ["CHAT", msg] = do

    n <- clientNick

    s <- roomOthersChans

    return [AnswerClients s ["CHAT", n, msg]]

handleCmd_lobby ["CREATE_ROOM", newRoom, roomPassword]

    | illegalName newRoom = return [Warning "Illegal room name"]

    | otherwise = do

        rs <- allRoomInfos

        cl <- thisClient

        return $ if isJust $ find (\room -> newRoom == name room) rs then 

            [Warning "Room exists"]

            else

            [

                AddRoom newRoom roomPassword,

                AnswerClients [sendChan cl] ["NOT_READY", nick cl]

            ]

handleCmd_lobby ["CREATE_ROOM", newRoom] =

    handleCmd_lobby ["CREATE_ROOM", newRoom, ""]

handleCmd_lobby ["JOIN_ROOM", roomName, roomPassword] = do

    (ci, irnc) <- ask

    let ris = allRooms irnc

    cl <- thisClient

    let maybeRI = find (\ri -> roomName == name (irnc `room` ri)) ris

    let jRI = fromJust maybeRI

    let jRoom = irnc `room` jRI

    let jRoomClients = map (client irnc) $! roomClients irnc jRI -- no lazyness here!

    return $

        if isNothing maybeRI then 

            [Warning "No such rooms"]

            else if isRestrictedJoins jRoom then

            [Warning "Joining restricted"]

            else if roomPassword /= password jRoom then

            [Warning "Wrong password"]

            else

            [

                MoveToRoom jRI,

                AnswerClients (map sendChan $ cl : jRoomClients) ["NOT_READY", nick cl],

                AnswerClients [sendChan cl] $ "JOINED" : map nick jRoomClients

            ]

            ++ (map (readynessMessage cl) jRoomClients)

            ++ (answerFullConfig cl $ params jRoom)

        where

        readynessMessage cl c = AnswerClients [sendChan cl] [if isReady c then "READY" else "NOT_READY", nick c]

        toAnswer cl (paramName, paramStrs) = AnswerClients [sendChan cl] $ "CFG" : paramName : paramStrs

        answerFullConfig cl params = map (toAnswer cl) (leftConfigPart ++ rightConfigPart)

            where

            (leftConfigPart, rightConfigPart) = partition (\(p, _) -> p /= "MAP") $ Map.toList params

{-

handleCmd_lobby clID clients rooms ["JOIN_ROOM", roomName, roomPassword]

    | noSuchRoom = [Warning "No such room"]

    | isRestrictedJoins jRoom = [Warning "Joining restricted"]

    | roomPassword /= password jRoom = [Warning "Wrong password"]

    | otherwise =

        [RoomRemoveThisClient "", -- leave lobby

        RoomAddThisClient rID] -- join room

        ++ answerNicks

        ++ answerReady

        ++ [AnswerThisRoom ["NOT_READY", nick client]]

        ++ answerFullConfig

        ++ answerTeams

        ++ watchRound

    where

        answerNicks =

            [AnswerThisClient $ "JOINED" :

            map (\clID -> nick $ clients IntMap.! clID) roomClientsIDs | playersIn jRoom /= 0]

        answerReady = map

            ((\ c ->

                AnswerThisClient

                [if isReady c then "READY" else "NOT_READY", nick c])

            . (\ clID -> clients IntMap.! clID))

            roomClientsIDs

        toAnswer (paramName, paramStrs) = AnswerThisClient $ "CFG" : paramName : paramStrs

        answerFullConfig = map toAnswer (leftConfigPart ++ rightConfigPart)

        (leftConfigPart, rightConfigPart) = partition (\(p, _) -> p /= "MAP") (Map.toList $ params jRoom)

        watchRound = if not $ gameinprogress jRoom then

                    []

                else

                    [AnswerThisClient  ["RUN_GAME"],

                    AnswerThisClient $ "EM" : toEngineMsg "e$spectate 1" : Foldable.toList (roundMsgs jRoom)]

        answerTeams = if gameinprogress jRoom then

                answerAllTeams (clientProto client) (teamsAtStart jRoom)

            else

                answerAllTeams (clientProto client) (teams jRoom)

-}

handleCmd_lobby ["JOIN_ROOM", roomName] =

    handleCmd_lobby ["JOIN_ROOM", roomName, ""]

{-

handleCmd_lobby clID clients rooms ["FOLLOW", asknick] =

    if noSuchClient || roomID followClient == 0 then

        []

    else

        handleCmd_lobby clID clients rooms ["JOIN_ROOM", roomName]

    where

        maybeClient = Foldable.find (\cl -> asknick == nick cl) clients

        noSuchClient = isNothing maybeClient

        followClient = fromJust maybeClient

        roomName = name $ rooms IntMap.! roomID followClient

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

    -- Administrator's stuff --

handleCmd_lobby clID clients rooms ["KICK", kickNick] =

        [KickClient kickID | isAdministrator client && (not noSuchClient) && kickID /= clID]

    where

        client = clients IntMap.! clID

        maybeClient = Foldable.find (\cl -> kickNick == nick cl) clients

        noSuchClient = isNothing maybeClient

        kickID = clientUID $ fromJust maybeClient

handleCmd_lobby clID clients rooms ["BAN", banNick] =

    if not $ isAdministrator client then

        []

    else

        BanClient banNick : handleCmd_lobby clID clients rooms ["KICK", banNick]

    where

        client = clients IntMap.! clID

handleCmd_lobby clID clients rooms ["SET_SERVER_VAR", "MOTD_NEW", newMessage] =

        [ModifyServerInfo (\si -> si{serverMessage = newMessage}) | isAdministrator client]

    where

        client = clients IntMap.! clID

handleCmd_lobby clID clients rooms ["SET_SERVER_VAR", "MOTD_OLD", newMessage] =

        [ModifyServerInfo (\si -> si{serverMessageForOldVersions = newMessage}) | isAdministrator client]

    where

        client = clients IntMap.! clID

handleCmd_lobby clID clients rooms ["SET_SERVER_VAR", "LATEST_PROTO", protoNum] =

    [ModifyServerInfo (\si -> si{latestReleaseVersion = fromJust readNum}) | isAdministrator client && isJust readNum]

    where

        client = clients IntMap.! clID

        readNum = maybeRead protoNum :: Maybe Word16

handleCmd_lobby clID clients rooms ["GET_SERVER_VAR"] =

    [SendServerVars | isAdministrator client]

    where

        client = clients IntMap.! clID

handleCmd_lobby clID clients rooms ["CLEAR_ACCOUNTS_CACHE"] =

        [ClearAccountsCache | isAdministrator client]

    where

        client = clients IntMap.! clID

-}

handleCmd_lobby _ = return [ProtocolError "Incorrect command (state: in lobby)"]