local st = require "util.stanza";

local jid_bare = import("util.jid", "bare");

local mod_muc = module:depends"muc";

local rooms = rawget(mod_muc, "rooms");

if not rooms then

	module:log("warn", "mod_%s is compatible with Prosody up to 0.10.x", module.name);

	return;

end

module:hook("iq/full", function (event)

	local origin, stanza = event.origin, event.stanza;

	if stanza.attr.type ~= "get" or not stanza:get_child("ping", "urn:xmpp:ping") then

		return;

	end

	local from = stanza.attr.from;

	local room_nick = stanza.attr.to;

	local room_jid = jid_bare(room_nick);

	local room = rooms[room_jid];

	if not room then return; end

	if room._jid_nick[from] == room_nick then

		origin.send(st.reply(stanza));

		return true;

	end

end);

module:hook("muc-disco#info", function(event)

	event.reply:tag("feature", {var="urn:xmpp:ping"}):up();

	event.reply:tag("feature", {var = "http://jabber.org/protocol/muc#self-ping-optimization"}):up();

end);