local st = require "util.stanza";

local xmlns_label = "urn:xmpp:sec-label:0";

local xmlns_label_catalog = "urn:xmpp:sec-label:catalog:2";

local xmlns_label_catalog_old = "urn:xmpp:sec-label:catalog:0"; -- COMPAT

module:add_feature(xmlns_label);

module:add_feature(xmlns_label_catalog);

module:add_feature(xmlns_label_catalog_old);

module:hook("account-disco-info", function(event) -- COMPAT

	local stanza = event.stanza;

	stanza:tag('feature', {var=xmlns_label}):up();

	stanza:tag('feature', {var=xmlns_label_catalog}):up();

end);

local default_labels = {

	{

		name = "Unclassified",

		label = true,

		default = true,

	},

	Classified = {

		SECRET = { color = "black", bgcolor = "aqua", label = "THISISSECRET" };

		PUBLIC = { label = "THISISPUBLIC" };

	};

};

local catalog_name, catalog_desc, labels;

local function get_conf() 

	catalog_name = module:get_option_string("security_catalog_name", "Default");

	catalog_desc = module:get_option_string("security_catalog_desc", "My labels");

	labels = module:get_option("security_labels", default_labels);

end

module:hook_global("config-reloaded",get_conf);

get_conf();

function handle_catalog_request(request)

	local catalog_request = request.stanza.tags[1];

	local reply = st.reply(request.stanza)

		:tag("catalog", {

			xmlns = catalog_request.attr.xmlns,

			to = catalog_request.attr.to,

			name = catalog_name,

			desc = catalog_desc

		});

	local function add_labels(catalog, labels, selector)

		local function add_item(item, name)

			local name = name or item.name;

			if item.label then

				if catalog_request.attr.xmlns == xmlns_label_catalog then

					catalog:tag("item", {

						selector = selector..name,

						default = item.default and "true" or nil,

					}):tag("securitylabel", { xmlns = xmlns_label })

				else -- COMPAT

					catalog:tag("securitylabel", {

						xmlns = xmlns_label,

						selector = selector..name,

						default = item.default and "true" or nil,

					})

				end

				if item.display or item.color or item.bgcolor then

					catalog:tag("displaymarking", {

						fgcolor = item.color,

						bgcolor = item.bgcolor,

					}):text(item.display or name):up();

				end

				if type(item.label) == "string" then

					catalog:tag("label"):text(item.label):up();

				elseif type(item.label) == "table" then

					catalog:tag("label"):add_child(item.label):up();

				end

				catalog:up();

				if catalog_request.attr.xmlns == xmlns_label_catalog then

					catalog:up();

				end

			else

				add_labels(catalog, item, (selector or "")..name.."|");

			end

		end

		for i = 1,#labels do

			add_item(labels[i])

		end

		for name, child in pairs(labels) do

			if type(name) == "string" then

				add_item(child, name)

			end

		end

	end

	-- TODO query remote servers

	--[[ FIXME later

	labels = module:fire_event("sec-label-catalog", {

			to = catalog_request.attr.to,

			request = request; -- or just origin?

			labels = labels;

		}) or labels;

		--]]

	add_labels(reply, labels, "");

	request.origin.send(reply);

	return true;

end

module:hook("iq/host/"..xmlns_label_catalog..":catalog", handle_catalog_request);

module:hook("iq/self/"..xmlns_label_catalog..":catalog", handle_catalog_request); -- COMPAT

module:hook("iq/self/"..xmlns_label_catalog_old..":catalog", handle_catalog_request); -- COMPAT