bots = {}

function Main()
	loadchat()
	for name, users in bots do
		frmHub:RegBot(name)
	end
end

function OnExit()
	savechat()
end

function DataArrival(user, data)
	if strsub(data, 1, 1) == "<" then
		local s, e, cmd, args = strfind(data, "^%b<> %!(%a+)%s*(.*)|$")
		if cmd == "mkchat" and user.bOperator then mkchat(user, args) return 1 end
	elseif strsub(data, 1, 4) == "$To:" then
		local s, e, to, str = strfind(data, "^$To: (%S+) From: %S+ $%b<> (.*)|$")
		if bots[to] then
			if not tfind(bots[to], user.sName) then
				user:SendPM(to, "youre not a member here") return
			end
			local isowner = user.sName == bots[to][1]
			local s, e, cmd, args = strfind(str, "^%!(%a+)%s*(.*)$")
			if cmd == "leave" then leave(user, to)
			elseif cmd == "members" then members(user, to)
			elseif cmd == "delchat" and isowner then delchat(user, to)
			elseif cmd == "invite" and isowner then invite(user, args, to)
			elseif cmd == "remove" and isowner then remove(user, args, to)
			else dochat(to, user.sName, str) end
		end
	end
end

function loadchat()
	bots = dofile("chatrooms.dat") or {}
end

function savechat()
	local f = openfile("chatrooms.dat", "w+")
	assert(f, "chatrooms.dat")
	write(f, "return {\n")
	for name, users in bots do
		write(f, "\t"..format("[%q]", name).." = { ")
		for i = 1, getn(users) do write(f, format("%q", users[i])..", ") end
		write(f, "},\n")
	end write(f, "}") closefile(f)
end

function dochat(to, from, str)
	local users = bots[to]
	for i = 1, getn(users) do
		local nick = users[i]
		if nick ~= from then SendToNick(nick, "$To: "..nick.." From: "..to.." $<"..from.."> "..str) end
	end
end

function mkchat(user, args)
	local s, e, name, members = strfind(args, "(%S+)%s*(.*)")
	if not s then user:SendData(">> syntax: !mkchat <name> [userlist]") return end
	if bots[name] then user:SendData(">> "..name.." belongs to "..bots[name][1]) return end
	frmHub:RegBot(name) bots[name] = { user.sName }
	invite(user, members, name) dochat(name, name, "hello")
end

function delchat(user, to)
	dochat(to, to, "bye bye")
	frmHub:UnregBot(to)
	bots[to] = nil
end

function leave(user, to)
	local id = tfind(bots[to], user.sName)
	if id == 1 then user:SendPM(to, "you cant")
	else dochat(to, to, user.sName.." has left the room") tremove(bots[to], id) end
end

function members(user, to)
	local users = bots[to]
	for i = 1, getn(users) do user:SendPM(to, i..". "..users[i]) end
end

function invite(user, args, to)
	local n = 0
	gsub(args, "(%S+)", function(nick)
		local tmp, bool = GetItemByName(nick), tfind(bots[%to], nick)
		if tmp and not bool then
			tinsert(bots[%to], nick)
			dochat(%to, %to, nick.." has been invited to the room")
		end
	end)
end

function remove(user, args, to)
	gsub(args, "(%S+)", function(nick)
		local id = tfind(bots[%to], nick)
		if id and id ~= 1 then
			dochat(%to, %to, nick.." has been removed from the room")
			tremove(bots[%to], id)
		end
	end)
end

function tfind(table, item)
	for key, value in table do
		if value == item then return key end
	end
end