-- Copyright (C) 2008 Matthew Wild

-- Copyright (C) 2008 Waqas Hussain

-- 

-- This program is free software; you can redistribute it and/or

-- modify it under the terms of the GNU General Public License

-- as published by the Free Software Foundation; either version 2

-- of the License, or (at your option) any later version.

-- 

-- This program is distributed in the hope that it will be useful,

-- but WITHOUT ANY WARRANTY; without even the implied warranty of

-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

-- GNU General Public License for more details.

-- 

-- You should have received a copy of the GNU General Public License

-- along with this program; if not, write to the Free Software

-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

--

local st = require "util.stanza"

local jid_split = require "util.jid".split;

local datamanager = require "util.datamanager"

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

module:add_iq_handler("c2s", "jabber:iq:private",

	function (session, stanza)

		local type = stanza.attr.type;

		local query = stanza.tags[1];

		if (type == "get" or type == "set") and query.name == "query" then

			local node, host = jid_split(stanza.attr.to);

			if not(node or host) or (node == session.username and host == session.host) then

				node, host = session.username, session.host;

				if #query.tags == 1 then

					local tag = query.tags[1];

					local key = tag.name..":"..tag.attr.xmlns;

					local data = datamanager.load(node, host, "private");

					if stanza.attr.type == "get" then

						if data and data[key] then

							session.send(st.reply(stanza):tag("query", {xmlns = "jabber:iq:private"}):add_child(st.deserialize(data[key])));

						else

							session.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 datamanager.store(node, host, "private", data) then

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

						else

							session.send(st.error_reply(stanza, "wait", "internal-server-error"));

						end

					end

				else

					session.send(st.error_reply(stanza, "modify", "bad-format"));

				end

			else

				session.send(st.error_reply(stanza, "cancel", "forbidden"));

			end

		end

	end);