-- 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 query = stanza.tags[1];

	if #query.tags ~= 1 then

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

		return true;

	end

	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", err));

		return true;

	end

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

		if data and data[key] then

			origin.send(st.reply(stanza):query("jabber:iq:private"):add_child(st.deserialize(data[key])));

			return true;

		else

			origin.send(st.reply(stanza):add_child(query));

			return true;

		end

	else -- type == 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

		local ok, err = private_storage:set(origin.username, data);

		if not ok then

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

			return true;

		end

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

		return true;

	end

end);