local st = require "util.stanza"

module:hook("iq/host/http://jabber.org/protocol/disco#info:query", function(event)

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

	if stanza.attr.type ~= "get" then return; end

	local node = stanza.tags[1].attr.node;

	if node and node ~= "" then return; end -- TODO fire event?

	local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#info");

	local done = {};

	for _,identity in ipairs(module:get_host_items("identity")) do

		local identity_s = identity.category.."\0"..identity.type;

		if not done[identity_s] then

			reply:tag("identity", identity):up();

			done[identity_s] = true;

		end

	end

	for _,feature in ipairs(module:get_host_items("feature")) do

		if not done[feature] then

			reply:tag("feature", {var=feature}):up();

			done[feature] = true;

		end

	end

	origin.send(reply);

	return true;

end);