-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

-- Copyright (C) 2014 Daurnimator

--

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

local restrict_persistent = not module:get_option_boolean("muc_room_allow_persistent", true);

local um_is_admin = require "core.usermanager".is_admin;

local function get_persistent(room)

	return room._data.persistent;

end

local function set_persistent(room, persistent)

	persistent = persistent and true or nil;

	if get_persistent(room) == persistent then return false; end

	room._data.persistent = persistent;

	return true;

end

module:hook("muc-config-form", function(event)

	if restrict_persistent and not um_is_admin(event.actor, module.host) then

		-- Don't show option if hidden rooms are restricted and user is not admin of this host

		return;

	end

	table.insert(event.form, {

		name = "muc#roomconfig_persistentroom";

		type = "boolean";

		label = "Persistent (room should remain even when it is empty)";

		desc = "Rooms are automatically deleted when they are empty, unless this option is enabled";

		value = get_persistent(event.room);

	});

end, 100-5);

module:hook("muc-config-submitted/muc#roomconfig_persistentroom", function(event)

	if restrict_persistent and not um_is_admin(event.actor, module.host) then

		return; -- Not allowed

	end

	if set_persistent(event.room, event.value) then

		event.status_codes["104"] = true;

	end

end);

module:hook("muc-disco#info", function(event)

	event.reply:tag("feature", {var = get_persistent(event.room) and "muc_persistent" or "muc_temporary"}):up();

end);

module:hook("muc-room-destroyed", function(event)

	set_persistent(event.room, false);

end, -100);

return {

	get = get_persistent;

	set = set_persistent;

};