/*
 * This file Copyright (C) 2007-2014 Mnemosyne LLC
 *
 * It may be used under the GNU Public License v2 or v3 licenses,
 * or any future license endorsed by Mnemosyne LLC.
 *
 * $Id$
 */


#include <glib/gi18n.h>
#include <gtk/gtk.h>
#ifdef HAVE_LIBAPPINDICATOR
 #include <libappindicator/app-indicator.h>
#endif
#include <libtransmission/transmission.h>
#include <libtransmission/utils.h>
#include "actions.h"
#include "tr-icon.h"
#include "util.h"

static TR_DEFINE_QUARK (tr_core, core)

#define ICON_NAME "transmission"

#ifdef HAVE_LIBAPPINDICATOR
void
gtr_icon_refresh (gpointer vindicator UNUSED)
{
}
#else
static void
activated (GtkStatusIcon * self UNUSED, gpointer user_data UNUSED)
{
  gtr_action_activate ("toggle-main-window");
}

static void
popup (GtkStatusIcon * self,
       guint           button,
       guint           when,
       gpointer        data UNUSED)
{
  GtkWidget * w = gtr_action_get_widget ("/icon-popup");

  gtk_menu_popup (GTK_MENU (w), NULL, NULL,
                  gtk_status_icon_position_menu,
                  self, button, when);
}

void
gtr_icon_refresh (gpointer vicon)
{
  double KBps;
  double limit;
  char up[64];
  char upLimit[64];
  char down[64];
  char downLimit[64];
  char tip[1024];
  const char * idle = _("Idle");
  GtkStatusIcon * icon = GTK_STATUS_ICON (vicon);
  tr_session * session = gtr_core_session (g_object_get_qdata (G_OBJECT (icon), core_quark ()));

  /* up */
  KBps = tr_sessionGetRawSpeed_KBps (session, TR_UP);
  if (KBps < 0.001)
    g_strlcpy (up, idle, sizeof (up));
  else
    tr_formatter_speed_KBps (up, KBps, sizeof (up));

  /* up limit */
  *upLimit = '\0';
  if (tr_sessionGetActiveSpeedLimit_KBps (session, TR_UP, &limit))
    {
      char buf[64];
      tr_formatter_speed_KBps (buf, limit, sizeof (buf));
      g_snprintf (upLimit, sizeof (upLimit), _(" (Limit: %s)"), buf);
    }

  /* down */
  KBps = tr_sessionGetRawSpeed_KBps (session, TR_DOWN);
  if (KBps < 0.001)
    g_strlcpy (down, idle, sizeof (down));
  else
    tr_formatter_speed_KBps (down, KBps, sizeof (down));

  /* down limit */
  *downLimit = '\0';
  if (tr_sessionGetActiveSpeedLimit_KBps (session, TR_DOWN, &limit))
    {
      char buf[64];
      tr_formatter_speed_KBps (buf, limit, sizeof (buf));
      g_snprintf (downLimit, sizeof (downLimit), _(" (Limit: %s)"), buf);
    }

  /* %1$s: current upload speed
   * %2$s: current upload limit, if any
   * %3$s: current download speed
   * %4$s: current download limit, if any */
  g_snprintf (tip, sizeof (tip), _("Transmission\nUp: %1$s %2$s\nDown: %3$s %4$s"), up, upLimit, down, downLimit);

  gtk_status_icon_set_tooltip_text (GTK_STATUS_ICON (icon), tip);
}
#endif

static const char *
getIconName (void)
{
  const char * icon_name;

  GtkIconTheme * theme = gtk_icon_theme_get_default ();

  /* if the tray's icon is a 48x48 file, use it;
   * otherwise, use the fallback builtin icon */
  if (!gtk_icon_theme_has_icon (theme, TRAY_ICON))
    {
      icon_name = ICON_NAME;
    }
  else
   {
     GtkIconInfo * icon_info = gtk_icon_theme_lookup_icon (theme, TRAY_ICON, 48, GTK_ICON_LOOKUP_USE_BUILTIN);
     const gboolean icon_is_builtin = gtk_icon_info_get_filename (icon_info) == NULL;
#if GTK_CHECK_VERSION(3,8,0)
    g_object_unref (icon_info);
#else
    gtk_icon_info_free (icon_info);
#endif
     icon_name = icon_is_builtin ? ICON_NAME : TRAY_ICON;
    }

  return icon_name;
}

gpointer
gtr_icon_new (TrCore * core)
{
#ifdef HAVE_LIBAPPINDICATOR
  GtkWidget * w;
  const char * icon_name = getIconName ();
  AppIndicator * indicator = app_indicator_new (ICON_NAME, icon_name, APP_INDICATOR_CATEGORY_SYSTEM_SERVICES);
  app_indicator_set_status (indicator, APP_INDICATOR_STATUS_ACTIVE);
  w = gtr_action_get_widget ("/icon-popup");
  app_indicator_set_menu (indicator, GTK_MENU (w));
  app_indicator_set_title (indicator, g_get_application_name ());
  g_object_set_qdata (G_OBJECT (indicator), core_quark (), core);
  return indicator;
#else
  const char * icon_name = getIconName ();
  GtkStatusIcon * icon = gtk_status_icon_new_from_icon_name (icon_name);
  g_signal_connect (icon, "activate", G_CALLBACK (activated), NULL);
  g_signal_connect (icon, "popup-menu", G_CALLBACK (popup), NULL);
  g_object_set_qdata (G_OBJECT (icon), core_quark (), core);
  return icon;
#endif
}