-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
-- 
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--


local st = require "util.stanza"

local private_storage = module:open_store();

module:add_feature("jabber:iq:private");

module:hook("iq/self/jabber:iq:private:query", function(event)
	local origin, stanza = event.origin, event.stanza;
	local type = stanza.attr.type;
	local query = stanza.tags[1];
	if #query.tags == 1 then
		local tag = query.tags[1];
		local key = tag.name..":"..tag.attr.xmlns;
		local data, err = private_storage:get(origin.username);
		if err then
			origin.send(st.error_reply(stanza, "wait", "internal-server-error"));
			return true;
		end
		if stanza.attr.type == "get" then
			if data and data[key] then
				origin.send(st.reply(stanza):tag("query", {xmlns = "jabber:iq:private"}):add_child(st.deserialize(data[key])));
			else
				origin.send(st.reply(stanza):add_child(stanza.tags[1]));
			end
		else -- set
			if not data then data = {}; end;
			if #tag == 0 then
				data[key] = nil;
			else
				data[key] = st.preserialize(tag);
			end
			-- TODO delete datastore if empty
			if private_storage:set(origin.username, data) then
				origin.send(st.reply(stanza));
			else
				origin.send(st.error_reply(stanza, "wait", "internal-server-error"));
			end
		end
	else
		origin.send(st.error_reply(stanza, "modify", "bad-format"));
	end
	return true;
end);