/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-

   nautilus-vfs-file.c: Subclass of NautilusFile to help implement the
   virtual trash directory.
 
   Copyright (C) 1999, 2000, 2001 Eazel, Inc.
  
   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.
  
   Author: Darin Adler <darin@bentspoon.com>
*/

#include <config.h>
#include "nautilus-vfs-file.h"

#include "nautilus-directory-private.h"
#include "nautilus-file-private.h"
#include <eel/eel-gtk-macros.h>

struct NautilusVFSFileDetails {
	char dummy; /* ANSI C does not allow empty structs */
};

static void nautilus_vfs_file_init       (gpointer   object,
						gpointer   klass);
static void nautilus_vfs_file_class_init (gpointer   klass);

EEL_CLASS_BOILERPLATE (NautilusVFSFile,
			      nautilus_vfs_file,
			      NAUTILUS_TYPE_FILE)

static void             
vfs_file_monitor_add (NautilusFile *file,
		      gconstpointer client,
		      GList *attributes)
{
	nautilus_directory_monitor_add_internal
		(file->details->directory, file,
		 client, TRUE, TRUE, attributes, NULL, NULL);
}   
			   
static void
vfs_file_monitor_remove (NautilusFile *file,
			 gconstpointer client)
{
	nautilus_directory_monitor_remove_internal
		(file->details->directory, file, client);
}			      

static void
vfs_file_call_when_ready (NautilusFile *file,
			  GList *file_attributes,
			  NautilusFileCallback callback,
			  gpointer callback_data)

{
	nautilus_directory_call_when_ready_internal
		(file->details->directory, file,
		 file_attributes, FALSE, NULL, callback, callback_data);
}

static void
vfs_file_cancel_call_when_ready (NautilusFile *file,
				 NautilusFileCallback callback,
				 gpointer callback_data)
{
	nautilus_directory_cancel_callback_internal
		(file->details->directory, file,
		 NULL, callback, callback_data);
}

static gboolean
vfs_file_check_if_ready (NautilusFile *file,
			 GList *file_attributes)
{
	return nautilus_directory_check_if_ready_internal
		(file->details->directory, file,
		 file_attributes);
}

static GnomeVFSFileType
vfs_file_get_file_type (NautilusFile *file)
{
	return nautilus_file_info_missing (file, GNOME_VFS_FILE_INFO_FIELDS_TYPE)
		? GNOME_VFS_FILE_TYPE_UNKNOWN : file->details->info->type;
}

static gboolean
vfs_file_get_item_count (NautilusFile *file, 
			 guint *count,
			 gboolean *count_unreadable)
{
	if (count_unreadable != NULL) {
		*count_unreadable = file->details->directory_count_failed;
	}
	if (!file->details->got_directory_count) {
		if (count != NULL) {
			*count = 0;
		}
		return FALSE;
	}
	if (count != NULL) {
		*count = file->details->directory_count;
	}
	return TRUE;
}

static NautilusRequestStatus
vfs_file_get_deep_counts (NautilusFile *file,
			  guint *directory_count,
			  guint *file_count,
			  guint *unreadable_directory_count,
			  GnomeVFSFileSize *total_size)
{
	GnomeVFSFileType type;

	if (directory_count != NULL) {
		*directory_count = 0;
	}
	if (file_count != NULL) {
		*file_count = 0;
	}
	if (unreadable_directory_count != NULL) {
		*unreadable_directory_count = 0;
	}
	if (total_size != NULL) {
		*total_size = 0;
	}

	if (!nautilus_file_is_directory (file)) {
		return NAUTILUS_REQUEST_DONE;
	}

	if (file->details->deep_counts_status != NAUTILUS_REQUEST_NOT_STARTED) {
		if (directory_count != NULL) {
			*directory_count = file->details->deep_directory_count;
		}
		if (file_count != NULL) {
			*file_count = file->details->deep_file_count;
		}
		if (unreadable_directory_count != NULL) {
			*unreadable_directory_count = file->details->deep_unreadable_count;
		}
		if (total_size != NULL) {
			*total_size = file->details->deep_size;
		}
		return file->details->deep_counts_status;
	}

	/* For directories, or before we know the type, we haven't started. */
	type = nautilus_file_get_file_type (file);
	if (type == GNOME_VFS_FILE_TYPE_UNKNOWN
	    || type == GNOME_VFS_FILE_TYPE_DIRECTORY) {
		return NAUTILUS_REQUEST_NOT_STARTED;
	}

	/* For other types, we are done, and the zeros are permanent. */
	return NAUTILUS_REQUEST_DONE;
}

static gboolean
vfs_file_get_date (NautilusFile *file,
		   NautilusDateType date_type,
		   time_t *date)
{
	switch (date_type) {
	case NAUTILUS_DATE_TYPE_CHANGED:
		/* Before we have info on a file, the date is unknown. */
		if (nautilus_file_info_missing (file, GNOME_VFS_FILE_INFO_FIELDS_CTIME)) {
			return FALSE;
		}
		if (date != NULL) {
			*date = file->details->info->ctime;
		}
		return TRUE;
	case NAUTILUS_DATE_TYPE_ACCESSED:
		/* Before we have info on a file, the date is unknown. */
		if (nautilus_file_info_missing (file, GNOME_VFS_FILE_INFO_FIELDS_ATIME)) {
			return FALSE;
		}
		if (date != NULL) {
			*date = file->details->info->atime;
		}
		return TRUE;
	case NAUTILUS_DATE_TYPE_MODIFIED:
		/* Before we have info on a file, the date is unknown. */
		if (nautilus_file_info_missing (file, GNOME_VFS_FILE_INFO_FIELDS_MTIME)) {
			return FALSE;
		}
		if (date != NULL) {
			*date = file->details->info->mtime;
		}
		return TRUE;
	case NAUTILUS_DATE_TYPE_PERMISSIONS_CHANGED:
		/* Before we have info on a file, the date is unknown. */
		if (nautilus_file_info_missing (file, GNOME_VFS_FILE_INFO_FIELDS_MTIME) ||
		    nautilus_file_info_missing (file, GNOME_VFS_FILE_INFO_FIELDS_CTIME)) {
			return FALSE;
		}
		/* mtime is when the contents changed; ctime is when the
		 * contents or the permissions (inc. owner/group) changed.
		 * So we can only know when the permissions changed if mtime
		 * and ctime are different.
		 */
		if (file->details->info->mtime == file->details->info->ctime) {
			return FALSE;
		}
		if (date != NULL) {
			*date = file->details->info->ctime;
		}
		return TRUE;
	}
	return FALSE;
}

static char *
vfs_file_get_where_string (NautilusFile *file)
{
	return nautilus_file_get_parent_uri_for_display (file);
}

static void
nautilus_vfs_file_init (gpointer object, gpointer klass)
{
	NautilusVFSFile *file;

	file = NAUTILUS_VFS_FILE (object);

	file->details = g_new0 (NautilusVFSFileDetails, 1);
}

static void
vfs_destroy (GtkObject *object)
{
	NautilusVFSFile *file;

	file = NAUTILUS_VFS_FILE (object);

	g_free (file->details);
	
	EEL_CALL_PARENT (GTK_OBJECT_CLASS, destroy, (object));
}

static void
nautilus_vfs_file_class_init (gpointer klass)
{
	GtkObjectClass *object_class;
	NautilusFileClass *file_class;

	object_class = GTK_OBJECT_CLASS (klass);
	file_class = NAUTILUS_FILE_CLASS (klass);
	
	object_class->destroy = vfs_destroy;

	file_class->monitor_add = vfs_file_monitor_add;
	file_class->monitor_remove = vfs_file_monitor_remove;
	file_class->call_when_ready = vfs_file_call_when_ready;
	file_class->cancel_call_when_ready = vfs_file_cancel_call_when_ready;
	file_class->check_if_ready = vfs_file_check_if_ready;
	file_class->get_file_type = vfs_file_get_file_type;
	file_class->get_item_count = vfs_file_get_item_count;
	file_class->get_deep_counts = vfs_file_get_deep_counts;
	file_class->get_date = vfs_file_get_date;
	file_class->get_where_string = vfs_file_get_where_string;
}