/* -*- mode: C; c-basic-offset: 4 -*-
 * themus - utilities for MATE themes
 * Copyright (C) 2002 Jonathan Blandford <aes@gnome.org>
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>
#include <gio/gio.h>
#include <libmate-desktop/mate-gsettings.h>
#include "mate-theme-apply.h"
#include "gtkrc-utils.h"
#include <gdk/gdkx.h>

#define INTERFACE_SCHEMA        "org.mate.interface"
#define INTERFACE_GNOME_SCHEMA  "org.gnome.desktop.interface"
#define GTK_THEME_KEY           "gtk-theme"
#define COLOR_SCHEME_KEY        "gtk-color-scheme"
#define ICON_THEME_KEY          "icon-theme"

#define MARCO_SCHEMA            "org.mate.Marco.general"
#define MARCO_THEME_KEY         "theme"

#define MOUSE_SCHEMA            "org.mate.peripherals-mouse"
#define CURSOR_THEME_KEY        "cursor-theme"
#define CURSOR_SIZE_KEY         "cursor-size"

#define NOTIFICATION_SCHEMA     "org.mate.NotificationDaemon"
#define NOTIFICATION_THEME_KEY  "theme"

#define compare(x,y) (!x && y) || (x && !y) || (x && y && strcmp (x, y))

void
mate_meta_theme_set (MateThemeMetaInfo *meta_theme_info)
{
  GSettings *interface_settings;
  GSettings *interface_gnome_settings = NULL;
  GSettings *marco_settings;
  GSettings *mouse_settings;
  GSettings *notification_settings = NULL;
  gchar *old_key;
  gint old_key_int;

  /*Load the gnome interface schema if we are running under wayland and it is present*/
  if (!(GDK_IS_X11_DISPLAY (gdk_display_get_default())))
  {
    GSettingsSchemaSource *source = g_settings_schema_source_get_default ();

    if (source)
    {
      GSettingsSchema *schema = g_settings_schema_source_lookup (source, INTERFACE_GNOME_SCHEMA, TRUE);

      if (schema)
        interface_gnome_settings = g_settings_new_full (schema, NULL, NULL);
    }
  }

  interface_settings = g_settings_new (INTERFACE_SCHEMA);
  marco_settings = g_settings_new (MARCO_SCHEMA);
  mouse_settings = g_settings_new (MOUSE_SCHEMA);

  if (mate_gsettings_schema_exists (NOTIFICATION_SCHEMA))
    {
      notification_settings = g_settings_new (NOTIFICATION_SCHEMA);
    }

  /* Set the gtk+ key */
  old_key = g_settings_get_string (interface_settings, GTK_THEME_KEY);
  if (compare (old_key, meta_theme_info->gtk_theme_name))
    {
      g_settings_set_string (interface_settings, GTK_THEME_KEY, meta_theme_info->gtk_theme_name);

      if (interface_gnome_settings)
          g_settings_set_string (interface_gnome_settings, 
                                 GTK_THEME_KEY, meta_theme_info->gtk_theme_name);

    }
  g_free (old_key);

  /* Set the color scheme key */
  old_key = g_settings_get_string (interface_settings, COLOR_SCHEME_KEY);
  if (compare (old_key, meta_theme_info->gtk_color_scheme))
    {
      /* only save the color scheme if it differs from the default
         scheme for the selected gtk theme */
      gchar *newval, *gtkcols;

      newval = meta_theme_info->gtk_color_scheme;
      gtkcols = gtkrc_get_color_scheme_for_theme (meta_theme_info->gtk_theme_name);

      if (newval == NULL || !strcmp (newval, "") ||
          mate_theme_color_scheme_equal (newval, gtkcols))
        {
          g_settings_reset (interface_settings, COLOR_SCHEME_KEY);
        }
      else
        {
          g_settings_set_string (interface_settings, COLOR_SCHEME_KEY, newval);
        }
      g_free (gtkcols);
    }
  g_free (old_key);

  /* Set the wm key */
  g_settings_set_string (marco_settings, MARCO_THEME_KEY, meta_theme_info->marco_theme_name);
  /*To also control decoration theme in wayland we need a decorator that uses marco themes
   *and queries gsettings to determine which theme to use to this is a TODO */

  /* set the icon theme */
  old_key = g_settings_get_string (interface_settings, ICON_THEME_KEY);
  if (compare (old_key, meta_theme_info->icon_theme_name))
    {
      g_settings_set_string (interface_settings, ICON_THEME_KEY, meta_theme_info->icon_theme_name);
      if (interface_gnome_settings)
        g_settings_set_string (interface_gnome_settings,
                             ICON_THEME_KEY, meta_theme_info->icon_theme_name);
    }
  g_free (old_key);

  /* set the notification theme */
  if (notification_settings != NULL)
    {
    if (meta_theme_info->notification_theme_name != NULL)
      {
        old_key = g_settings_get_string (notification_settings, NOTIFICATION_THEME_KEY);
        if (compare (old_key, meta_theme_info->notification_theme_name))
          {
            g_settings_set_string (notification_settings, NOTIFICATION_THEME_KEY, meta_theme_info->notification_theme_name);
          }
        g_free (old_key);
      }
    }

  /* Set the cursor theme key */
  old_key = g_settings_get_string (mouse_settings, CURSOR_THEME_KEY);
  if (compare (old_key, meta_theme_info->cursor_theme_name))
    {
      g_settings_set_string (mouse_settings, CURSOR_THEME_KEY, meta_theme_info->cursor_theme_name);
      if (interface_gnome_settings)
      {
        /*Note that this key is in a different place in GNOME than it is in MATE*/
        g_settings_set_string (interface_gnome_settings,
                             CURSOR_THEME_KEY, meta_theme_info->cursor_theme_name);
      }
    }

  old_key_int = g_settings_get_int (mouse_settings, CURSOR_SIZE_KEY);
  if (old_key_int != meta_theme_info->cursor_size)
    {
      g_settings_set_int (mouse_settings, CURSOR_SIZE_KEY, meta_theme_info->cursor_size);
    }

  g_free (old_key);
  g_object_unref (interface_settings);
  g_object_unref (marco_settings);
  g_object_unref (mouse_settings);
  if (notification_settings != NULL)
    g_object_unref (notification_settings);
}
