/*
 * gedit-vfs-save-utils.c
 * This file is part of gedit
 *
 * Copyright (C) 2005 - Paolo Borelli and Paolo Maggi
 *
 * 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.
 */
 
/*
 * Modified by the gedit Team, 2005. See the AUTHORS file for a 
 * list of people on the gedit Team.  
 * See the ChangeLog files for a list of changes. 
 */
 
 #include "gedit-vfs-save-utils.h"
 
gboolean
gedit_save_file  (const gchar           *uri,          
                  GeditGetDataCallback   data_callback,
                  gpointer               callback_data,	
                  GError               **error,
                  const gchar           *first_property_name,
                  ...)
{
	GnomeVFSURI      *vfs_uri;
	GnomeVFSFileInfo *info = NULL;
	GnomeVFSResult    vfs_res;
	gboolean          new_file;
	
	g_return_val_if_fail ((uri != NULL) && (strlen (uri) > 0), FALSE);
	g_return_val_if_fail (data_callback != NULL, FALSE);
	
	if (strlen (uri) > GEDIT_MAX_PATH_LEN)
	{
		g_set_error (error,
			     GEDIT_DOCUMENT_IO_ERROR,
			     GNOME_VFS_ERROR_NAME_TOO_LONG,
			     gnome_vfs_result_to_string (GNOME_VFS_ERROR_NAME_TOO_LONG));

		return FALSE;
	}

	vfs_uri = gnome_vfs_uri_new (uri);
	if (vfs_uri == NULL)
	{
		g_set_error (error, 
			     GEDIT_DOCUMENT_IO_ERROR,
			     GNOME_VFS_ERROR_INVALID_URI,
			     gnome_vfs_result_to_string (GNOME_VFS_ERROR_INVALID_URI));

		return FALSE;
	}
	
	// Set overwriting ??? Per ora no
	
	// Creazione buffer ??? Per ora no
	
	/* Get information about original file (if there is one) _following_ symlinks. */
	info = gnome_vfs_file_info_new ();
	vfs_res = gnome_vfs_get_file_info_uri (vfs_uri,
					       info,
					       GNOME_VFS_FILE_INFO_DEFAULT |
					       GNOME_VFS_FILE_INFO_FOLLOW_LINKS |
					       GNOME_VFS_FILE_INFO_GET_ACCESS_RIGHTS);

	new_file = FALSE;
	
	if (vfs_res == GNOME_VFS_ERROR_NOT_FOUND) 
	{
		/* We are creating a new file */
		new_file = TRUE;
	}
	
	// FINO QUI
	
	else if (vfs_res == GNOME_VFS_OK) /* If the file already exists */
	{
		/* If the file already exists */
		
		/* First of all check if the file is writable.
		 * If access is not a valid info field (e.g. with ssh), assume
		 * that it's writable and try to go on.
		 */
		if ((info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_ACCESS) &&
		    !(info->permissions & GNOME_VFS_PERM_ACCESS_WRITABLE))
		{
			g_set_error (error,
				     GEDIT_DOCUMENT_IO_ERROR,
				     GNOME_VFS_ERROR_READ_ONLY,
				     gnome_vfs_result_to_string (GNOME_VFS_ERROR_READ_ONLY));

			goto out;
		}

		/* check if is regular file */
		if ((info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_TYPE) &&
		    !(info->type == GNOME_VFS_FILE_TYPE_REGULAR))
		{
			g_set_error (error,
				     GEDIT_DOCUMENT_IO_ERROR,
				     GNOME_VFS_ERROR_GENERIC,
				     gnome_vfs_result_to_string (GNOME_VFS_ERROR_GENERIC));

			goto out;
		}

		/* check if it's a hard link */
		if ((info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_LINK_COUNT) &&
		    (info->link_count > 1))
		{
			is_link = TRUE;
		}

		/* if not a hard link, check if is a symlink */
		if (!is_link)
			is_link = uri_is_symlink (vfs_uri);
	}
	else /* there were other errors getting info of old file: error out */
	{
		g_set_error (error,
			     GEDIT_DOCUMENT_IO_ERROR,
			     vfs_res,
			     gnome_vfs_result_to_string (vfs_res));

		goto out;
	}

	return TRUE;
}