/* 
 * registry - zavai resource registry
 *
 * Copyright (C) 2009  Enrico Zini <enrico@enricozini.org>
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

using GLib;
using Gee;

namespace zavai {

public class Registry : Object, Resource
{
	HashMap<string, Resource> memb_resources;
	HashMap<string, Service> memb_services;
	HashMap<string, Applet> memb_applets;
	HashMap<string, Menu> memb_menus;
	protected ArrayList<Resource> registration_order;
	public DBus.Connection sbus;
    public string bus_name;

	public Registry()
	{
		memb_resources = new HashMap<string, Resource>(str_hash, str_equal);
		memb_services = new HashMap<string, Service>(str_hash, str_equal);
		memb_applets = new HashMap<string, Applet>(str_hash, str_equal);
		memb_menus = new HashMap<string, Menu>(str_hash, str_equal);
		registration_order = new ArrayList<Resource>();
		try {
			sbus = DBus.Bus.get(DBus.BusType.SYSTEM);
		} catch (DBus.Error e) {
			stderr.printf("Cannot access system DBus bus: %s\n", e.message);
			sbus = null;
		}

        bus_name = DBus.bus_get_unique_name(sbus.get_connection());
        zavai.log.info("My bus name: " + bus_name);

        dynamic DBus.Object tmp_dbus = sbus.get_object(
            "org.freedesktop.DBus",
            "/org/freedesktop/DBus",
            "org.freedesktop.DBus");
        bus_name = "org.enricozini.zavai";
        uint res = tmp_dbus.RequestName(bus_name, (uint)DBus.NameFlag.DO_NOT_QUEUE);
        switch (res)
        {
            case DBus.RequestNameReply.PRIMARY_OWNER:
                zavai.log.info("Registered to dbus as " + bus_name);
                break;
            case DBus.RequestNameReply.IN_QUEUE:
                zavai.log.info("In queue, but I asked not to");
                break;
            case DBus.RequestNameReply.EXISTS:
                zavai.log.info(bus_name + " already exists");
                break;
            case DBus.RequestNameReply.ALREADY_OWNER:
                zavai.log.info("I already own the name " + bus_name + " but I do not remember asking for it");
                break;
        }
	}

	public void shutdown()
	{
		// Shutdown in reverse registration order
		for (int i = registration_order.size - 1; i >= 0; --i) 
			registration_order[i].shutdown();
	}

	public void register_resource(string name, Resource obj)
	{
		memb_resources[name] = obj;
		registration_order.add(obj);
	}

	public void register_service(Service obj)
	{
		memb_services[obj.name] = obj;
		registration_order.add(obj);
	}

	public void register_applet(string name, Applet obj)
	{
		memb_applets[name] = obj;
		registration_order.add(obj);
	}

	public void register_menu(string name, Menu obj)
	{
		memb_applets[name] = obj;
		memb_menus[name] = obj;
		registration_order.add(obj);
	}

	public Resource? getr(string name)
	{
		if (name in memb_resources)
			return memb_resources[name];
		else
		{
			log.error("getr: no resource found: " + name);
			return null;
		}
	}

	public Service? gets(string name)
	{
		if (name in memb_services)
			return memb_services[name];
		else
		{
			log.error("gets: no service found: " + name);
			return null;
		}
	}

	public Applet? geta(string name)
	{
		if (name in memb_applets)
			return memb_applets[name];
		else
		{
			log.error("geta: no applet found: " + name);
			return null;
		}
	}

	public Menu? getmenu(string name)
	{
		if (name in memb_menus)
			return memb_menus[name];
		else
		{
			log.error("getmenu: no menu found: " + name);
			return null;
		}
	}
}

zavai.Registry registry;

}