module HWProtoNEState where

import qualified Data.IntMap as IntMap

import Maybe

import Data.List

import Data.Word

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

import CoreTypes

import Actions

import Utils

handleCmd_NotEntered :: CmdHandler

handleCmd_NotEntered clID clients _ ["NICK", newNick]

	| not . null $ nick client = [ProtocolError "Nickname already chosen"]

	| haveSameNick = [AnswerThisClient ["WARNING", "Nickname collision"], ByeClient ""]

	| illegalName newNick = [ByeClient "Illegal nickname"]

	| otherwise =

		ModifyClient (\c -> c{nick = newNick}) :

		AnswerThisClient ["NICK", newNick] :

		[CheckRegistered | clientProto client /= 0]

	where

		client = clients IntMap.! clID

		haveSameNick = isJust $ find (\cl -> newNick == nick cl) $ IntMap.elems clients

handleCmd_NotEntered clID clients _ ["PROTO", protoNum]

	| clientProto client > 0 = [ProtocolError "Protocol already known"]

	| parsedProto == 0 = [ProtocolError "Bad number"]

	| otherwise =

		ModifyClient (\c -> c{clientProto = parsedProto}) :

		AnswerThisClient ["PROTO", show parsedProto] :

		[CheckRegistered | (not . null) (nick client)]

	where

		client = clients IntMap.! clID

		parsedProto = fromMaybe 0 (maybeRead protoNum :: Maybe Word16)

handleCmd_NotEntered clID clients _ ["PASSWORD", passwd] =

	if passwd == webPassword client then

		[ModifyClient (\cl -> cl{logonPassed = True}),

		MoveToLobby] ++ adminNotice

	else

		[ByeClient "Authentication failed"]

	where

		client = clients IntMap.! clID

		adminNotice = [AnswerThisClient ["ADMIN_ACCESS"] | isAdministrator client]

--handleCmd_NotEntered _ _ _ ["DUMP"] =

--	[Dump]

handleCmd_NotEntered clID _ _ _ = [ProtocolError "Incorrect command (state: not entered)"]