/* gpaexportfileop.c - The GpaExportFileOperation object.
 *	Copyright (C) 2003, Miguel Coca.
 *
 * This file is part of GPA
 *
 * GPA 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.
 *
 * GPA 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
 */

#include <gpgme.h>
#include <unistd.h>
#include "gpa.h"
#include "i18n.h"
#include "gtktools.h"
#include "gpaexportfileop.h"

static GObjectClass *parent_class = NULL;

static gboolean
gpa_export_file_operation_get_destination (GpaExportOperation *operation, 
					   gpgme_data_t *dest,
					   gboolean *armor);
static void 
gpa_export_file_operation_complete_export (GpaExportOperation *operation);

/* GObject boilerplate */

static void
gpa_export_file_operation_finalize (GObject *object)
{
  GpaExportFileOperation *op = GPA_EXPORT_FILE_OPERATION (object);

  /* Cleanup */
  if (op->fd != -1)
    {
      close (op->fd);
    }
  if (op->file)
    {
      g_free (op->file);
    }

  G_OBJECT_CLASS (parent_class)->finalize (object);
}

static void
gpa_export_file_operation_init (GpaExportFileOperation *op)
{
  op->file = NULL;
  op->fd = -1;
}

static GObject*
gpa_export_file_operation_constructor (GType type,
				  guint n_construct_properties,
				  GObjectConstructParam *construct_properties)
{
  GObject *object;
  GpaExportFileOperation *op;

  /* Invoke parent's constructor */
  object = parent_class->constructor (type,
				      n_construct_properties,
				      construct_properties);
  op = GPA_EXPORT_FILE_OPERATION (object);

  return object;
}

static void
gpa_export_file_operation_class_init (GpaExportFileOperationClass *klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);
  GpaExportOperationClass *export_class = GPA_EXPORT_OPERATION_CLASS (klass);

  parent_class = g_type_class_peek_parent (klass);

  object_class->constructor = gpa_export_file_operation_constructor;
  object_class->finalize = gpa_export_file_operation_finalize;
  export_class->get_destination = gpa_export_file_operation_get_destination;
  export_class->complete_export = gpa_export_file_operation_complete_export;  
}

GType
gpa_export_file_operation_get_type (void)
{
  static GType file_operation_type = 0;
  
  if (!file_operation_type)
    {
      static const GTypeInfo file_operation_info =
      {
        sizeof (GpaExportFileOperationClass),
        (GBaseInitFunc) NULL,
        (GBaseFinalizeFunc) NULL,
        (GClassInitFunc) gpa_export_file_operation_class_init,
        NULL,           /* class_finalize */
        NULL,           /* class_data */
        sizeof (GpaExportFileOperation),
        0,              /* n_preallocs */
        (GInstanceInitFunc) gpa_export_file_operation_init,
      };
      
      file_operation_type = g_type_register_static (GPA_EXPORT_OPERATION_TYPE,
						    "GpaExportFileOperation",
						    &file_operation_info, 0);
    }
  
  return file_operation_type;
}

/* Virtual methods */

static gboolean
gpa_export_file_operation_get_destination (GpaExportOperation *operation, 
					   gpgme_data_t *dest,
					   gboolean *armor)
{
  GpaExportFileOperation *op = GPA_EXPORT_FILE_OPERATION (operation);
  GtkWidget *dialog = gtk_file_selection_new (_("Export public keys to file"));
  GtkResponseType response;

  /* Customize the dialog, adding the "armor" option */
  GtkWidget *armor_check = gtk_check_button_new_with_mnemonic (_("_armor"));
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (armor_check), *armor);
  if (!gpa_options_get_simplified_ui (gpa_options_get_instance ()))
    {
      GtkWidget *vbox = GTK_DIALOG (dialog)->vbox;
      gtk_box_pack_start (GTK_BOX (vbox), armor_check, FALSE, FALSE, 0);
      gtk_widget_show_all (armor_check);
    }

  /* Run the dialog until there is a valid response */
  do 
    {
      response = gtk_dialog_run (GTK_DIALOG (dialog));
      /* Save the selected file, free'ing the previous value if required */
      if (op->file)
	{
	  g_free (op->file);
	}
      op->file = g_strdup (gtk_file_selection_get_filename 
			   (GTK_FILE_SELECTION (dialog)));
      *armor = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (armor_check));
    }
  while (response != GTK_RESPONSE_CANCEL && 
	 (op->fd = gpa_open_output 
	  (op->file, dest, GPA_OPERATION (op)->window)) == -1);
  gtk_widget_destroy (dialog);

  return (response == GTK_RESPONSE_OK);
}

static void 
gpa_export_file_operation_complete_export (GpaExportOperation *operation)
{
  GpaExportFileOperation *op = GPA_EXPORT_FILE_OPERATION (operation);
  gchar *message = g_strdup_printf (_("The keys have been exported to %s."),
				    op->file);
  gpa_window_message (message, GPA_OPERATION (op)->window);
  g_free (message);
}

/* API */

GpaExportFileOperation*
gpa_export_file_operation_new (GtkWidget *window, GList *keys)
{
  GpaExportFileOperation *op;
  
  op = g_object_new (GPA_EXPORT_FILE_OPERATION_TYPE,
		     "window", window,
		     "keys", keys,
		     NULL);

  return op;
}