local st = require "util.stanza";

local dt = require "util.datetime";

local pubsub = module:depends"pubsub";

local actor = module.host .. "/modules/" .. module.name;

local function publish_stats(stats, stats_extra)

	local id = "current";

	local xitem = st.stanza("item", { id = id })

		:tag("query", { xmlns = "http://jabber.org/protocol/stats" });

	for name, value in pairs(stats) do

		local stat_extra = stats_extra[name];

		local unit = stat_extra and stat_extra.units;

		xitem:tag("stat", { name = name, unit = unit, value = tostring(value) }):up();

	end

	local ok, err = pubsub.service:publish("stats", actor, id, xitem);

	if not ok then

		module:log("error", "Error publishing stats: %s", err);

	end

end

function module.load()

	pubsub.service:create("stats", true);

	pubsub.service:set_affiliation("stats", true, actor, "publisher");

end

module:hook_global("stats-updated", function (event)

	publish_stats(event.stats, event.stats_extra);

end);

function module.unload()

	pubsub.service:delete("stats", true);

end