plugins/muc: Move persistent room configuration to own module

plugins/muc/persistent.lib.lua

@@ -0,0 +1,49 @@
+-- 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 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;
+	if room.save then room:save(true); end
+	return true;
+end
+
+module:hook("muc-config-form", function(event)
+	table.insert(event.form, {
+		name = "muc#roomconfig_persistentroom";
+		type = "boolean";
+		label = "Make Room Persistent?";
+		value = get_persistent(event.room);
+	});
+end);
+
+module:hook("muc-config-submitted", function(event)
+	local new = event.fields["muc#roomconfig_persistentroom"];
+	if new ~= nil and set_persistent(event.room, new) 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);
+
+return {
+	get = get_persistent;
+	set = set_persistent;
+};