/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007 Collabora Ltd.
 *
 * 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.
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <string.h>

#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <glade/glade.h>

#include <libmissioncontrol/mission-control.h>

#include <libempathy/gossip-debug.h>
#include <libempathy/gossip-utils.h>
#include <libempathy/gossip-conf.h>

#include "empathy-status-icon.h"
#include "gossip-presence-chooser.h"
#include "gossip-preferences.h"
#include "gossip-ui-utils.h"
#include "gossip-accounts-dialog.h"

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
		       EMPATHY_TYPE_STATUS_ICON, EmpathyStatusIconPriv))

#define DEBUG_DOMAIN "StatusIcon"

struct _EmpathyStatusIconPriv {
	MissionControl *mc;
	GtkStatusIcon  *icon;
	GtkWindow      *window;

	GtkWidget      *popup_menu;
	GtkWidget      *show_window_item;
	GtkWidget      *message_item;
	GtkWidget      *status_item;
};

static void     empathy_status_icon_class_init  (EmpathyStatusIconClass *klass);
static void     empathy_status_icon_init        (EmpathyStatusIcon      *icon);
static void     status_icon_finalize            (GObject                *object);
static void     status_icon_presence_changed_cb (MissionControl         *mc,
						 McPresence              state,
						 EmpathyStatusIcon      *icon);
static void     status_icon_toggle_visibility   (EmpathyStatusIcon      *icon);
static void     status_icon_activate_cb         (GtkStatusIcon          *status_icon,
						 EmpathyStatusIcon      *icon);
static gboolean status_icon_delete_event_cb     (GtkWidget              *widget,
						 GdkEvent               *event,
						 EmpathyStatusIcon      *icon);
static void     status_icon_popup_menu_cb       (GtkStatusIcon          *status_icon,
						 guint                   button,
						 guint                   activate_time,
						 EmpathyStatusIcon      *icon);
static void     status_icon_create_menu         (EmpathyStatusIcon      *icon);
static void     status_icon_new_message_cb      (GtkWidget              *widget,
						 EmpathyStatusIcon      *icon);
static void     status_icon_quit_cb             (GtkWidget              *window,
						 EmpathyStatusIcon      *icon);
static void     status_icon_show_hide_window_cb (GtkWidget              *widget,
						 EmpathyStatusIcon      *icon);

G_DEFINE_TYPE (EmpathyStatusIcon, empathy_status_icon, G_TYPE_OBJECT);

static void
empathy_status_icon_class_init (EmpathyStatusIconClass *klass)
{
	GObjectClass *object_class = G_OBJECT_CLASS (klass);

	object_class->finalize = status_icon_finalize;

	g_type_class_add_private (object_class, sizeof (EmpathyStatusIconPriv));
}

static void
empathy_status_icon_init (EmpathyStatusIcon *icon)
{
	EmpathyStatusIconPriv *priv;
	McPresence             state;

	priv = GET_PRIV (icon);

	priv->icon = gtk_status_icon_new ();
	priv->mc = gossip_mission_control_new ();

	status_icon_create_menu (icon);

	state = mission_control_get_presence_actual (priv->mc, NULL);
	status_icon_presence_changed_cb (priv->mc, state, icon);
	
	dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->mc),
				     "PresenceStatusActual",
				     G_CALLBACK (status_icon_presence_changed_cb),
				     icon, NULL);
	g_signal_connect (priv->icon, "activate",
			  G_CALLBACK (status_icon_activate_cb),
			  icon);
	g_signal_connect (priv->icon, "popup-menu",
			  G_CALLBACK (status_icon_popup_menu_cb),
			  icon);
}

static void
status_icon_finalize (GObject *object)
{
	EmpathyStatusIconPriv *priv;

	priv = GET_PRIV (object);

	dbus_g_proxy_disconnect_signal (DBUS_G_PROXY (priv->mc),
					"PresenceStatusActual",
					G_CALLBACK (status_icon_presence_changed_cb),
					object);

	g_object_unref (priv->mc);
	g_object_unref (priv->icon);
	g_object_unref (priv->window);
}

EmpathyStatusIcon *
empathy_status_icon_new (GtkWindow *window)
{
	EmpathyStatusIconPriv *priv;
	EmpathyStatusIcon     *icon;
	gboolean               should_hide;
	gboolean               visible;

	g_return_val_if_fail (GTK_IS_WINDOW (window), NULL);

	icon = g_object_new (EMPATHY_TYPE_STATUS_ICON, NULL);
	priv = GET_PRIV (icon);

	priv->window = g_object_ref (window);

	g_signal_connect (priv->window, "delete-event",
			  G_CALLBACK (status_icon_delete_event_cb),
			  icon);

	gossip_conf_get_bool (gossip_conf_get (),
			      GOSSIP_PREFS_UI_MAIN_WINDOW_HIDDEN,
			      &should_hide);
	visible = gossip_window_get_is_visible (window);

	if ((!should_hide && !visible) || (should_hide && visible)) {
		status_icon_toggle_visibility (icon);
	}

	return icon;
}

static void
status_icon_presence_changed_cb (MissionControl    *mc,
				 McPresence         state,
				 EmpathyStatusIcon *icon)
{
	EmpathyStatusIconPriv *priv;
	const gchar           *icon_name;
	gchar                 *status;

	priv = GET_PRIV (icon);

	icon_name = gossip_icon_name_for_presence_state (state);
	status = mission_control_get_presence_message_actual (priv->mc, NULL);
	if (G_STR_EMPTY (status)) {
		g_free (status);
		status = g_strdup (gossip_presence_state_get_default_status (state));
	}

	gtk_status_icon_set_from_icon_name (priv->icon, icon_name);
	gtk_status_icon_set_tooltip (priv->icon, status);

	g_free (status);

	if (state < MC_PRESENCE_AVAILABLE) {
		gtk_widget_set_sensitive (priv->message_item, FALSE);
	} else {
		gtk_widget_set_sensitive (priv->message_item, TRUE);
	}
}

static void
status_icon_toggle_visibility (EmpathyStatusIcon *icon)
{
	EmpathyStatusIconPriv *priv;
	gboolean               visible;

	priv = GET_PRIV (icon);

	visible = gossip_window_get_is_visible (GTK_WINDOW (priv->window));

	if (visible) {
		gtk_widget_hide (GTK_WIDGET (priv->window));
		gossip_conf_set_bool (gossip_conf_get (),
				      GOSSIP_PREFS_UI_MAIN_WINDOW_HIDDEN, TRUE);
	} else {
		GList *accounts;

		gossip_window_present (GTK_WINDOW (priv->window), TRUE);
		gossip_conf_set_bool (gossip_conf_get (),
				      GOSSIP_PREFS_UI_MAIN_WINDOW_HIDDEN, FALSE);
	
		/* Show the accounts dialog if there is no enabled accounts */
		accounts = mc_accounts_list_by_enabled (TRUE);
		if (accounts) {
			mc_accounts_list_free (accounts);
		} else {
			gossip_debug (DEBUG_DOMAIN,
				      "No enabled account, Showing account dialog");
			gossip_accounts_dialog_show ();
		}
	}
}

static void
status_icon_activate_cb (GtkStatusIcon     *status_icon,
			 EmpathyStatusIcon *icon)
{
	status_icon_toggle_visibility (icon);
}

static gboolean
status_icon_delete_event_cb (GtkWidget         *widget,
			     GdkEvent          *event,
			     EmpathyStatusIcon *icon)
{
	status_icon_toggle_visibility (icon);

	return TRUE;
}

static void
status_icon_popup_menu_cb (GtkStatusIcon     *status_icon,
			   guint              button,
			   guint              activate_time,
			   EmpathyStatusIcon *icon)
{
	EmpathyStatusIconPriv *priv;
	GtkWidget             *submenu;
	gboolean               show;

	priv = GET_PRIV (icon);

	show = gossip_window_get_is_visible (GTK_WINDOW (priv->window));

	g_signal_handlers_block_by_func (priv->show_window_item,
					 status_icon_show_hide_window_cb,
					 icon);
	gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (priv->show_window_item),
					show);
	g_signal_handlers_unblock_by_func (priv->show_window_item,
					   status_icon_show_hide_window_cb,
					   icon);

	submenu = gossip_presence_chooser_create_menu ();
	gtk_menu_item_set_submenu (GTK_MENU_ITEM (priv->status_item),
				   submenu);

	gtk_menu_popup (GTK_MENU (priv->popup_menu),
			NULL, NULL,
			gtk_status_icon_position_menu,
			priv->icon,
			button,
			activate_time);
}

static void
status_icon_create_menu (EmpathyStatusIcon *icon)
{
	EmpathyStatusIconPriv *priv;
	GladeXML              *glade;

	priv = GET_PRIV (icon);

	glade = gossip_glade_get_file ("empathy-status-icon.glade",
				       "tray_menu",
				       NULL,
				       "tray_menu", &priv->popup_menu,
				       "tray_show_list", &priv->show_window_item,
				       "tray_new_message", &priv->message_item,
				       "tray_status", &priv->status_item,
				       NULL);

	gossip_glade_connect (glade,
			      icon,
			      "tray_new_message", "activate", status_icon_new_message_cb,
			      "tray_quit", "activate", status_icon_quit_cb,
			      NULL);

	g_signal_connect (priv->show_window_item, "toggled",
			  G_CALLBACK (status_icon_show_hide_window_cb),
			  icon);

	g_object_unref (glade);
}

static void
status_icon_new_message_cb (GtkWidget         *widget,
			    EmpathyStatusIcon *icon)
{
	EmpathyStatusIconPriv *priv;

	priv = GET_PRIV (icon);

	//gossip_new_message_dialog_show (GTK_WINDOW (priv->window));
}

static void
status_icon_quit_cb (GtkWidget         *window,
		     EmpathyStatusIcon *icon)
{
	gtk_main_quit ();
}

static void
status_icon_show_hide_window_cb (GtkWidget         *widget,
				 EmpathyStatusIcon *icon)
{
	status_icon_toggle_visibility (icon);
}