/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2004 Imendio AB
 * Copyright (C) 2007-2008 Collabora Ltd.
 *
 * 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.
 *
 * Authors: Mikael Hallendal <micke@imendio.com>
 *          Martyn Russell <martyn@imendio.com>
 *          Xavier Claessens <xclaesse@gmail.com>
 */

#include "config.h"

#include <string.h>

#include <glib/gi18n.h>

#include <telepathy-glib/util.h>

#include "empathy-contact.h"
#include "empathy-utils.h"
#include "empathy-enum-types.h"

#define DEBUG_FLAG EMPATHY_DEBUG_CONTACT
#include "empathy-debug.h"

#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyContact)
typedef struct {
	gchar *id;
	gchar *name;
	EmpathyAvatar *avatar;
	McAccount *account;
	McPresence presence;
	gchar *presence_message;
	guint handle;
	EmpathyCapabilities capabilities;
	gboolean is_user;
	guint hash;
	EmpathyContactReady ready;
} EmpathyContactPriv;

static void contact_finalize (GObject *object);
static void contact_get_property (GObject *object, guint param_id,
    GValue *value, GParamSpec *pspec);
static void contact_set_property (GObject *object, guint param_id,
    const GValue *value, GParamSpec *pspec);

G_DEFINE_TYPE (EmpathyContact, empathy_contact, G_TYPE_OBJECT);

enum
{
	PROP_0,
	PROP_ID,
	PROP_NAME,
	PROP_AVATAR,
	PROP_ACCOUNT,
	PROP_PRESENCE,
	PROP_PRESENCE_MESSAGE,
	PROP_HANDLE,
	PROP_CAPABILITIES,
	PROP_IS_USER,
	PROP_READY
};

static void
empathy_contact_class_init (EmpathyContactClass *class)
{
	GObjectClass *object_class;

	object_class = G_OBJECT_CLASS (class);

	object_class->finalize = contact_finalize;
	object_class->get_property = contact_get_property;
	object_class->set_property = contact_set_property;

	g_object_class_install_property (object_class,
      PROP_ID,
      g_param_spec_string ("id",
        "Contact id",
        "String identifying contact",
        NULL,
        G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_NAME,
      g_param_spec_string ("name",
        "Contact Name",
        "The name of the contact",
        NULL,
        G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_AVATAR,
      g_param_spec_boxed ("avatar",
        "Avatar image",
        "The avatar image",
        EMPATHY_TYPE_AVATAR,
        G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_ACCOUNT,
      g_param_spec_object ("account",
        "Contact Account",
				"The account associated with the contact",
				MC_TYPE_ACCOUNT,
				G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_PRESENCE,
      g_param_spec_uint ("presence",
        "Contact presence",
				"Presence of contact",
				MC_PRESENCE_UNSET,
				LAST_MC_PRESENCE,
				MC_PRESENCE_UNSET,
				G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_PRESENCE_MESSAGE,
      g_param_spec_string ("presence-message",
        "Contact presence message",
				"Presence message of contact",
				NULL,
				G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_HANDLE,
      g_param_spec_uint ("handle",
        "Contact Handle",
				"The handle of the contact",
				0,
				G_MAXUINT,
				0,
				G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_CAPABILITIES,
			g_param_spec_flags ("capabilities",
        "Contact Capabilities",
				"Capabilities of the contact",
				EMPATHY_TYPE_CAPABILITIES,
				EMPATHY_CAPABILITIES_UNKNOWN,
				G_PARAM_CONSTRUCT | G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_IS_USER,
      g_param_spec_boolean ("is-user",
        "Contact is-user",
				"Is contact the user",
				FALSE,
				G_PARAM_READWRITE));

	g_object_class_install_property (object_class,
      PROP_READY,
      g_param_spec_flags ("ready",
        "Contact ready flags",
				"Flags for ready properties",
				EMPATHY_TYPE_CONTACT_READY,
				EMPATHY_CONTACT_READY_NONE,
				G_PARAM_READABLE));

	g_type_class_add_private (object_class, sizeof (EmpathyContactPriv));
}

static void
empathy_contact_init (EmpathyContact *contact)
{
	EmpathyContactPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (contact,
		EMPATHY_TYPE_CONTACT, EmpathyContactPriv);

	contact->priv = priv;
}

static void
contact_finalize (GObject *object)
{
	EmpathyContactPriv *priv;

	priv = GET_PRIV (object);

	DEBUG ("finalize: %p", object);

	g_free (priv->name);
	g_free (priv->id);
	g_free (priv->presence_message);

	if (priv->avatar)
    {
      empathy_avatar_unref (priv->avatar);
    }

	if (priv->account)
    {
      g_object_unref (priv->account);
    }

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

static void
contact_get_property (GObject *object,
                      guint param_id,
                      GValue *value,
                      GParamSpec *pspec)
{
	EmpathyContactPriv *priv;

	priv = GET_PRIV (object);

	switch (param_id) {
	case PROP_ID:
		g_value_set_string (value, priv->id);
		break;
	case PROP_NAME:
		g_value_set_string (value,
        empathy_contact_get_name (EMPATHY_CONTACT (object)));
		break;
	case PROP_AVATAR:
		g_value_set_boxed (value, priv->avatar);
		break;
	case PROP_ACCOUNT:
		g_value_set_object (value, priv->account);
		break;
	case PROP_PRESENCE:
		g_value_set_uint (value, priv->presence);
		break;
	case PROP_PRESENCE_MESSAGE:
		g_value_set_string (value, priv->presence_message);
		break;
	case PROP_HANDLE:
		g_value_set_uint (value, priv->handle);
		break;
	case PROP_CAPABILITIES:
		g_value_set_flags (value, priv->capabilities);
		break;
	case PROP_IS_USER:
		g_value_set_boolean (value, priv->is_user);
		break;
	case PROP_READY:
		g_value_set_flags (value, priv->ready);
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
		break;
	};
}

static void
contact_set_property (GObject *object,
                      guint param_id,
                      const GValue *value,
                      GParamSpec *pspec)
{
	EmpathyContactPriv *priv;

	priv = GET_PRIV (object);

	switch (param_id) {
	case PROP_ID:
		empathy_contact_set_id (EMPATHY_CONTACT (object),
        g_value_get_string (value));
		break;
	case PROP_NAME:
		empathy_contact_set_name (EMPATHY_CONTACT (object),
        g_value_get_string (value));
		break;
	case PROP_AVATAR:
		empathy_contact_set_avatar (EMPATHY_CONTACT (object),
        g_value_get_boxed (value));
		break;
	case PROP_ACCOUNT:
		empathy_contact_set_account (EMPATHY_CONTACT (object),
        MC_ACCOUNT (g_value_get_object (value)));
		break;
	case PROP_PRESENCE:
		empathy_contact_set_presence (EMPATHY_CONTACT (object),
        g_value_get_uint (value));
		break;
	case PROP_PRESENCE_MESSAGE:
		empathy_contact_set_presence_message (EMPATHY_CONTACT (object),
        g_value_get_string (value));
		break;
	case PROP_HANDLE:
		empathy_contact_set_handle (EMPATHY_CONTACT (object),
        g_value_get_uint (value));
		break;
	case PROP_CAPABILITIES:
		empathy_contact_set_capabilities (EMPATHY_CONTACT (object),
        g_value_get_flags (value));
		break;
	case PROP_IS_USER:
		empathy_contact_set_is_user (EMPATHY_CONTACT (object),
				g_value_get_boolean (value));
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
		break;
	};
}

static void
contact_set_ready_flag (EmpathyContact *contact,
                        EmpathyContactReady flag)
{
	EmpathyContactPriv *priv = GET_PRIV (contact);

	if (!(priv->ready & flag))
    {
      priv->ready |= flag;
      g_object_notify (G_OBJECT (contact), "ready");
    }
}

EmpathyContact *
empathy_contact_new (McAccount *account)
{
	return g_object_new (EMPATHY_TYPE_CONTACT,
      "account", account,
			NULL);
}

EmpathyContact *
empathy_contact_new_full (McAccount  *account,
                          const gchar *id,
                          const gchar *name)
{
  return g_object_new (EMPATHY_TYPE_CONTACT,
      "account", account,
       "name", name,
       "id", id,
       NULL);
}

const gchar *
empathy_contact_get_id (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);

	priv = GET_PRIV (contact);

	return priv->id;
}

void
empathy_contact_set_id (EmpathyContact *contact,
		                    const gchar *id)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));
	g_return_if_fail (id != NULL);

	priv = GET_PRIV (contact);

	/* We temporally ref the contact because it could be destroyed
	 * during the signal emition */
	g_object_ref (contact);
	if (tp_strdiff (id, priv->id))
    {
      g_free (priv->id);
      priv->id = g_strdup (id);

      g_object_notify (G_OBJECT (contact), "id");
      if (G_STR_EMPTY (priv->name))
        {
          g_object_notify (G_OBJECT (contact), "name");
        }
    }
	contact_set_ready_flag (contact, EMPATHY_CONTACT_READY_ID);

	g_object_unref (contact);
}

const gchar *
empathy_contact_get_name (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);

	priv = GET_PRIV (contact);

	if (G_STR_EMPTY (priv->name))
    {
      return empathy_contact_get_id (contact);
    }

	return priv->name;
}

void
empathy_contact_set_name (EmpathyContact *contact,
                          const gchar *name)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));

	priv = GET_PRIV (contact);

	g_object_ref (contact);
	if (tp_strdiff (name, priv->name))
    {
      g_free (priv->name);
      priv->name = g_strdup (name);
      g_object_notify (G_OBJECT (contact), "name");
    }
	contact_set_ready_flag (contact, EMPATHY_CONTACT_READY_NAME);
	g_object_unref (contact);
}

EmpathyAvatar *
empathy_contact_get_avatar (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);

	priv = GET_PRIV (contact);

	return priv->avatar;
}

void
empathy_contact_set_avatar (EmpathyContact *contact,
			                      EmpathyAvatar *avatar)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));

	priv = GET_PRIV (contact);

	if (priv->avatar == avatar)
		return;

	if (priv->avatar)
    {
      empathy_avatar_unref (priv->avatar);
      priv->avatar = NULL;
    }

	if (avatar)
    {
      priv->avatar = empathy_avatar_ref (avatar);
    }

	g_object_notify (G_OBJECT (contact), "avatar");
}

McAccount *
empathy_contact_get_account (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);

	priv = GET_PRIV (contact);

	return priv->account;
}

void
empathy_contact_set_account (EmpathyContact *contact,
			                       McAccount *account)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));
	g_return_if_fail (MC_IS_ACCOUNT (account));

	priv = GET_PRIV (contact);

	if (account == priv->account)
		return;

	if (priv->account)
    {
      g_object_unref (priv->account);
    }
	priv->account = g_object_ref (account);

	g_object_notify (G_OBJECT (contact), "account");
}

McPresence
empathy_contact_get_presence (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), MC_PRESENCE_UNSET);

	priv = GET_PRIV (contact);

	return priv->presence;
}

void
empathy_contact_set_presence (EmpathyContact *contact,
			                        McPresence presence)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));

	priv = GET_PRIV (contact);

	if (presence == priv->presence)
		return;

	priv->presence = presence;

	g_object_notify (G_OBJECT (contact), "presence");
}

const gchar *
empathy_contact_get_presence_message (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), NULL);

	priv = GET_PRIV (contact);

	return priv->presence_message;
}

void
empathy_contact_set_presence_message (EmpathyContact *contact,
				                              const gchar *message)
{
	EmpathyContactPriv *priv = GET_PRIV (contact);

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));

	if (!tp_strdiff (message, priv->presence_message))
		return;

	g_free (priv->presence_message);
	priv->presence_message = g_strdup (message);

	g_object_notify (G_OBJECT (contact), "presence-message");
}

guint
empathy_contact_get_handle (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), 0);

	priv = GET_PRIV (contact);

	return priv->handle;
}

void
empathy_contact_set_handle (EmpathyContact *contact,
			                      guint handle)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));

	priv = GET_PRIV (contact);

	g_object_ref (contact);
	if (handle != priv->handle)
    {
      priv->handle = handle;
      g_object_notify (G_OBJECT (contact), "handle");
    }
	contact_set_ready_flag (contact, EMPATHY_CONTACT_READY_HANDLE);
	g_object_unref (contact);
}

EmpathyCapabilities
empathy_contact_get_capabilities (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), 0);

	priv = GET_PRIV (contact);

	return priv->capabilities;
}

void
empathy_contact_set_capabilities (EmpathyContact *contact,
                                  EmpathyCapabilities capabilities)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));

	priv = GET_PRIV (contact);

	if (priv->capabilities == capabilities)
		return;

	priv->capabilities = capabilities;

	g_object_notify (G_OBJECT (contact), "capabilities");
}

gboolean
empathy_contact_is_user (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), FALSE);

	priv = GET_PRIV (contact);

	return priv->is_user;
}

void
empathy_contact_set_is_user (EmpathyContact *contact,
			                       gboolean is_user)
{
	EmpathyContactPriv *priv;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));

	priv = GET_PRIV (contact);

	if (priv->is_user == is_user)
		return;

	priv->is_user = is_user;

	g_object_notify (G_OBJECT (contact), "is-user");
}

gboolean
empathy_contact_is_online (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), FALSE);

	priv = GET_PRIV (contact);

	return (priv->presence > MC_PRESENCE_OFFLINE);
}

const gchar *
empathy_contact_get_status (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), "");

	priv = GET_PRIV (contact);

	if (priv->presence_message)
		return priv->presence_message;

	return empathy_presence_get_default_message (priv->presence);
}

gboolean
empathy_contact_can_voip (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), FALSE);

	priv = GET_PRIV (contact);

	return priv->capabilities & (EMPATHY_CAPABILITIES_AUDIO |
				     EMPATHY_CAPABILITIES_VIDEO);
}

EmpathyContactReady
empathy_contact_get_ready (EmpathyContact *contact)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), FALSE);

	priv = GET_PRIV (contact);

	return priv->ready;
}

gboolean
empathy_contact_equal (gconstpointer v1,
		                   gconstpointer v2)
{
	McAccount *account_a;
	McAccount *account_b;
	const gchar *id_a;
	const gchar *id_b;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (v1), FALSE);
	g_return_val_if_fail (EMPATHY_IS_CONTACT (v2), FALSE);

	account_a = empathy_contact_get_account (EMPATHY_CONTACT (v1));
	account_b = empathy_contact_get_account (EMPATHY_CONTACT (v2));

	id_a = empathy_contact_get_id (EMPATHY_CONTACT (v1));
	id_b = empathy_contact_get_id (EMPATHY_CONTACT (v2));

	return empathy_account_equal (account_a, account_b) &&
	       !tp_strdiff (id_a, id_b);
}

guint
empathy_contact_hash (gconstpointer key)
{
	EmpathyContactPriv *priv;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (key), +1);

	priv = GET_PRIV (EMPATHY_CONTACT (key));

	if (priv->hash == 0) {
		priv->hash = empathy_account_hash (priv->account) ^
			     g_str_hash (priv->id);
	}

	return priv->hash;
}

static gboolean
contact_is_ready_func (GObject *contact,
                       gpointer user_data)
{
	EmpathyContactPriv *priv = GET_PRIV (contact);
	EmpathyContactReady ready;

	ready = GPOINTER_TO_UINT (user_data);

	/* When the name is NULL, empathy_contact_get_name() fallback to the id.
	 * When the caller want to wait the name to be ready, it also want to wait
	 * the id to be ready in case of fallback. */
	if ((ready & EMPATHY_CONTACT_READY_NAME) && G_STR_EMPTY (priv->name)) {
		ready |= EMPATHY_CONTACT_READY_ID;
	}

	return (priv->ready & ready) == ready;
}

void
empathy_contact_run_until_ready (EmpathyContact *contact,
                                 EmpathyContactReady ready,
                                 GMainLoop **loop)
{
	empathy_run_until_ready_full (contact, "notify::ready",
      contact_is_ready_func, GUINT_TO_POINTER (ready),
      loop);
}

static gchar *
contact_get_avatar_filename (EmpathyContact *contact,
                             const gchar *token)
{
	EmpathyContactPriv *priv = GET_PRIV (contact);
	gchar *avatar_path;
	gchar *avatar_file;
	gchar *token_escaped;
	gchar *contact_escaped;

	if (G_STR_EMPTY (priv->id))
		return NULL;

	contact_escaped = tp_escape_as_identifier (priv->id);
	token_escaped = tp_escape_as_identifier (token);

	avatar_path = g_build_filename (g_get_user_cache_dir (),
      PACKAGE_NAME,
      "avatars",
      mc_account_get_unique_name (priv->account),
      contact_escaped,
      NULL);
	g_mkdir_with_parents (avatar_path, 0700);

	avatar_file = g_build_filename (avatar_path, token_escaped, NULL);

	g_free (contact_escaped);
	g_free (token_escaped);
	g_free (avatar_path);

	return avatar_file;
}

void
empathy_contact_load_avatar_data (EmpathyContact *contact,
                                  const guchar  *data,
				                          const gsize len,
				                          const gchar *format,
				                          const gchar *token)
{
	EmpathyAvatar *avatar;
	gchar *filename;
	GError *error = NULL;

	g_return_if_fail (EMPATHY_IS_CONTACT (contact));
	g_return_if_fail (data != NULL);
	g_return_if_fail (len > 0);
	g_return_if_fail (format != NULL);
	g_return_if_fail (!G_STR_EMPTY (token));

	/* Load and set the avatar */
	avatar = empathy_avatar_new (g_memdup (data, len), len, g_strdup (format),
      g_strdup (token));
	empathy_contact_set_avatar (contact, avatar);
	empathy_avatar_unref (avatar);

	/* Save to cache if not yet in it */
	filename = contact_get_avatar_filename (contact, token);
	if (filename && !g_file_test (filename, G_FILE_TEST_EXISTS))
    {
      if (!empathy_avatar_save_to_file (avatar, filename, &error))
        {
          DEBUG ("Failed to save avatar in cache: %s",
            error ? error->message : "No error given");
          g_clear_error (&error);
        }
      else
        {
          DEBUG ("Avatar saved to %s", filename);
        }
    }
	g_free (filename);
}

gboolean
empathy_contact_load_avatar_cache (EmpathyContact *contact,
				                           const gchar *token)
{
	EmpathyAvatar *avatar = NULL;
	gchar *filename;
	gchar *data = NULL;
	gsize len;
	GError *error = NULL;

	g_return_val_if_fail (EMPATHY_IS_CONTACT (contact), FALSE);
	g_return_val_if_fail (!G_STR_EMPTY (token), FALSE);

	/* Load the avatar from file if it exists */
	filename = contact_get_avatar_filename (contact, token);
	if (filename && g_file_test (filename, G_FILE_TEST_EXISTS))
    {
      if (!g_file_get_contents (filename, &data, &len, &error))
        {
          DEBUG ("Failed to load avatar from cache: %s",
            error ? error->message : "No error given");
          g_clear_error (&error);
        }
    }

	if (data)
    {
      DEBUG ("Avatar loaded from %s", filename);
      avatar = empathy_avatar_new (data, len, NULL, g_strdup (token));
      empathy_contact_set_avatar (contact, avatar);
      empathy_avatar_unref (avatar);
    }

	g_free (filename);

	return data != NULL;
}

GType
empathy_avatar_get_type (void)
{
	static GType type_id = 0;

	if (!type_id)
    {
      type_id = g_boxed_type_register_static ("EmpathyAvatar",
          (GBoxedCopyFunc) empathy_avatar_ref,
          (GBoxedFreeFunc) empathy_avatar_unref);
    }

	return type_id;
}

EmpathyAvatar *
empathy_avatar_new (guchar *data,
                    gsize len,
		                gchar *format,
		                gchar *token)
{
	EmpathyAvatar *avatar;

	avatar = g_slice_new0 (EmpathyAvatar);
	avatar->data = data;
	avatar->len = len;
	avatar->format = format;
	avatar->token = token;
	avatar->refcount = 1;

	return avatar;
}

void
empathy_avatar_unref (EmpathyAvatar *avatar)
{
	g_return_if_fail (avatar != NULL);

	avatar->refcount--;
	if (avatar->refcount == 0)
    {
      g_free (avatar->data);
      g_free (avatar->format);
      g_free (avatar->token);
      g_slice_free (EmpathyAvatar, avatar);
    }
}

EmpathyAvatar *
empathy_avatar_ref (EmpathyAvatar *avatar)
{
	g_return_val_if_fail (avatar != NULL, NULL);

	avatar->refcount++;

	return avatar;
}

/**
 * empathy_avatar_save_to_file:
 * @avatar: the avatar
 * @filename: name of a file to write avatar to
 * @error: return location for a GError, or NULL
 *
 * Save the avatar to a file named filename
 *
 * Returns: %TRUE on success, %FALSE if an error occurred 
 */
gboolean
empathy_avatar_save_to_file (EmpathyAvatar *self,
                             const gchar *filename,
                             GError **error)
{
  return g_file_set_contents (filename, self->data, self->len, error);
}