/*
 * This is where the implementation of the DBus based application API lives.
 * All the methods in here are designed to be called remotly via DBus.
 * document-interface.cpp has all of the actual manipulation methods.
 * This interface is just for creating new document interfaces.
 *
 * Documentation for these methods is in application-interface.xml
 * which is the "gold standard" as to how the interface should work.
 *
 * Authors:
 *   Soren Berg <Glimmer07@gmail.com>
 *
 * Copyright (C) 2009 Soren Berg
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */
 
#include "application-interface.h"
#include <string.h>
#include "dbus-init.h"
#include "file.h"
#include "inkscape.h"

G_DEFINE_TYPE(ApplicationInterface, application_interface, G_TYPE_OBJECT)

static void
application_interface_finalize (GObject *object)
{
        G_OBJECT_CLASS (application_interface_parent_class)->finalize (object);
}


static void
application_interface_class_init (ApplicationInterfaceClass *klass)
{
        GObjectClass *object_class;
        object_class = G_OBJECT_CLASS (klass);
        object_class->finalize = application_interface_finalize;
}

static void
application_interface_init (ApplicationInterface *app_interface)
{
    dbus_g_error_domain_register (INKSCAPE_ERROR,
                NULL,
                INKSCAPE_TYPE_ERROR);
}

static bool
ensure_desktop_valid(GError **error)
{
    if (!inkscape_use_gui()) {
        g_set_error(error, INKSCAPE_ERROR, INKSCAPE_ERROR_OTHER, "Application interface action requires a GUI");
        return false;
    }
    return true;
}

static bool
ensure_desktop_not_present(GError **error)
{
    if (inkscape_use_gui()) {
        g_set_error(error, INKSCAPE_ERROR, INKSCAPE_ERROR_OTHER, "Application interface action requires non-GUI (command line) mode");
        return false;
    }
    return true;
}

ApplicationInterface *
application_interface_new (void)
{
        return (ApplicationInterface*)g_object_new (TYPE_APPLICATION_INTERFACE, NULL);
}

/*
 * Error stuff...
 *
 * To add a new error type, edit here and in the .h InkscapeError enum.
 */
GQuark
inkscape_error_quark (void)
{
  static GQuark quark = 0;
  if (!quark)
    quark = g_quark_from_static_string ("inkscape_error");

  return quark;
}

#define ENUM_ENTRY(NAME, DESC) { NAME, "" #NAME "", DESC }

GType inkscape_error_get_type(void)
{
    static GType etype = 0;

    if (etype == 0) {
        static const GEnumValue values[] =
            {

                ENUM_ENTRY(INKSCAPE_ERROR_SELECTION, "Incompatible_Selection"),
                ENUM_ENTRY(INKSCAPE_ERROR_OBJECT, "Incompatible_Object"),
                ENUM_ENTRY(INKSCAPE_ERROR_VERB, "Failed_Verb"),
                ENUM_ENTRY(INKSCAPE_ERROR_OTHER, "Generic_Error"),
                { 0, 0, 0 }
            };

        etype = g_enum_register_static("InkscapeError", values);
    }

    return etype;
}

/****************************************************************************
     DESKTOP FUNCTIONS
****************************************************************************/

gchar* 
application_interface_desktop_new (ApplicationInterface *app_interface, 
                                   GError **error) 
{
    g_return_val_if_fail(ensure_desktop_valid(error), NULL);
    return (gchar*)Inkscape::Extension::Dbus::init_desktop();
}

gchar** 
application_interface_get_desktop_list (ApplicationInterface *app_interface)
{
  return NULL;
}

gchar* 
application_interface_get_active_desktop (ApplicationInterface *app_interface,
                                          GError **error)
{
  return NULL;
}

gboolean
application_interface_set_active_desktop (ApplicationInterface *app_interface, 
                                          gchar* document_name,
                                          GError **error)
{
  return TRUE;
}

gboolean
application_interface_desktop_close_all (ApplicationInterface *app_interface,
                                          GError **error) 
{
  return TRUE;
}

gboolean
application_interface_exit (ApplicationInterface *app_interface, GError **error)
{
    sp_file_exit();
    return TRUE;
}

/****************************************************************************
     DOCUMENT FUNCTIONS
****************************************************************************/

gchar* application_interface_document_new (ApplicationInterface *app_interface,
                                           GError **error)
{
    g_return_val_if_fail(ensure_desktop_not_present(error), NULL);
    return (gchar*)Inkscape::Extension::Dbus::init_document();
}

gchar*
application_interface_get_active_document(ApplicationInterface *app_interface,
                                          GError **error)
{
  gchar *result = (gchar*)Inkscape::Extension::Dbus::init_active_document();
  if (!result) {
      g_set_error(error, INKSCAPE_ERROR, INKSCAPE_ERROR_OTHER, "No active document");
  }
  return result;
}

gchar** 
application_interface_get_document_list (ApplicationInterface *app_interface)
{
  return NULL;
}

gboolean
application_interface_document_close_all (ApplicationInterface *app_interface,
                                          GError **error) 
{
  return TRUE;
}

/* INTERESTING FUNCTIONS
    SPDesktop  *desktop = SP_ACTIVE_DESKTOP;
    g_assert(desktop != NULL);

    SPDocument *doc = sp_desktop_document(desktop);
    g_assert(doc != NULL);

    Inkscape::XML::Node     *repr = doc->getReprRoot();
    g_assert(repr != NULL);
*/

