gameServer/Votes.hs
author sheepluva
Sun, 15 Jun 2014 00:02:25 +0200
changeset 10306 4fca8bcfaff0
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child 10392 5012e1f9e893
permissions -rw-r--r--
clean up halting a little
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{-# LANGUAGE OverloadedStrings #-}
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module Votes where
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import Control.Monad.Reader
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import Control.Monad.State.Strict
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import ServerState
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import qualified Data.ByteString.Char8 as B
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import qualified Data.List as L
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import qualified Data.Map as Map
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import Data.Maybe
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-------------------
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import Utils
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import CoreTypes
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import HandlerUtils
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voted :: Bool -> Reader (ClientIndex, IRnC) [Action]
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voted vote = do
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    cl <- thisClient
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    rm <- thisRoom
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    uid <- liftM clUID thisClient
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    if isNothing $ voting rm then
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        return [AnswerClients [sendChan cl] ["CHAT", "[server]", loc "There's no voting going on"]]
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    else if uid `L.notElem` entitledToVote (fromJust $ voting rm) then
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        return []
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    else if uid `L.elem` map fst (votes . fromJust $ voting rm) then
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        return [AnswerClients [sendChan cl] ["CHAT", "[server]", loc "You already have voted"]]
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    else
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        actOnVoting . fromJust . liftM (\v -> v{votes = (uid, vote):votes v}) $ voting rm
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    where
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    actOnVoting :: Voting -> Reader (ClientIndex, IRnC) [Action]
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    actOnVoting vt = do
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        let (pro, contra) = L.partition snd $ votes vt
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        let v = (length $ entitledToVote vt) `div` 2 + 1
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        if length contra >= v then
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            closeVoting
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        else if length pro >= v then do
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            a <- act $ voteType vt
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            c <- closeVoting
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            return $ c ++ a
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        else
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            return [ModifyRoom $ \r -> r{voting = Just vt}]
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    closeVoting = do
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        chans <- roomClientsChans
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        return [
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            AnswerClients chans ["CHAT", "[server]", loc "Voting closed"]
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            , ModifyRoom (\r -> r{voting = Nothing})
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            ]
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    act (VoteKick nickname) = do
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        (thisClientId, rnc) <- ask
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        maybeClientId <- clientByNick nickname
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        rm <- thisRoom
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        let kickId = fromJust maybeClientId
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        let kickCl = rnc `client` kickId
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        let sameRoom = clientRoom rnc thisClientId == clientRoom rnc kickId
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        return
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            [KickRoomClient kickId |
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                isJust maybeClientId
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                && sameRoom
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                && ((isNothing $ gameInfo rm) || teamsInGame kickCl == 0)
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            ]
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    act (VoteMap roomSave) = do
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        rm <- thisRoom
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        let rs = Map.lookup roomSave (roomSaves rm)
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        case rs of
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             Nothing -> return []
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             Just (mp, p) -> do
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                 cl <- thisClient
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                 chans <- roomClientsChans
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                 let a = map (replaceChans chans) $ answerFullConfigParams cl mp p
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                 return $ 
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                    (ModifyRoom $ \r -> r{params = p, mapParams = mp})
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                    : SendUpdateOnThisRoom
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                    : a
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        where
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            replaceChans chans (AnswerClients _ msg) = AnswerClients chans msg
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            replaceChans _ a = a
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startVote :: VoteType -> Reader (ClientIndex, IRnC) [Action]
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startVote vt = do
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    (ci, rnc) <- ask
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    --cl <- thisClient
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    rm <- thisRoom
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    chans <- roomClientsChans
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    let uids = map (clUID . client rnc) . roomClients rnc $ clientRoom rnc ci
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    if isJust $ voting rm then
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        return []
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    else
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        return [
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            ModifyRoom (\r -> r{voting = Just (newVoting vt){entitledToVote = uids}})
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            , AnswerClients chans ["CHAT", "[server]", B.concat [loc "New voting started", ": ", voteInfo vt]]
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            , ReactCmd ["VOTE", "YES"]
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        ]
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checkVotes :: StateT ServerState IO [Action]
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checkVotes = do
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    rnc <- gets roomsClients
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    liftM concat $ io $ do
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        ris <- allRoomsM rnc
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        mapM (check rnc) ris
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    where
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        check rnc ri = do
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            e <- room'sM rnc voting ri
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            case e of
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                 Just rv -> do
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                     modifyRoom rnc (\r -> r{voting = if voteTTL rv == 0 then Nothing else Just rv{voteTTL = voteTTL rv - 1}}) ri
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                     if voteTTL rv == 0 then do
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                        chans <- liftM (map sendChan) $ roomClientsM rnc ri
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                        return [AnswerClients chans ["CHAT", "[server]", loc "Voting expired"]]
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                        else
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                        return []
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                 Nothing -> return []
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voteInfo :: VoteType -> B.ByteString
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voteInfo (VoteKick n) = B.concat [loc "kick", " ", n]
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voteInfo (VoteMap n) = B.concat [loc "map", " ", n]