/* -*- 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 (!g_file_set_contents (filename, data, len, &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;
}