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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007 Collabora Ltd.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <string.h>

#include <libtelepathy/tp-chan-type-text-gen.h>
#include <libtelepathy/tp-chan-iface-chat-state-gen.h>
#include <libtelepathy/tp-conn.h>
#include <libtelepathy/tp-helpers.h>
#include <libtelepathy/tp-props-iface.h>

#include "empathy-tp-chat.h"
#include "empathy-contact-factory.h"
#include "empathy-marshal.h"
#include "empathy-debug.h"
#include "empathy-time.h"
#include "empathy-utils.h"

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
               EMPATHY_TYPE_TP_CHAT, EmpathyTpChatPriv))

#define DEBUG_DOMAIN "TpChat"

struct _EmpathyTpChatPriv {
    EmpathyContactFactory *factory;
    EmpathyContact        *user;
    McAccount             *account;
    gchar                 *id;
    MissionControl        *mc;
    gboolean               acknowledge;

    TpChan                *tp_chan;
    DBusGProxy        *props_iface;
    DBusGProxy            *text_iface;
    DBusGProxy        *chat_state_iface;
};

static void             empathy_tp_chat_class_init    (EmpathyTpChatClass    *klass);
static void             empathy_tp_chat_init          (EmpathyTpChat         *chat);
static void             tp_chat_finalize              (GObject               *object);
static GObject *        tp_chat_constructor           (GType                  type,
                               guint                  n_props,
                               GObjectConstructParam *props);
static void             tp_chat_get_property          (GObject               *object,
                               guint                  param_id,
                               GValue                *value,
                               GParamSpec            *pspec);
static void             tp_chat_set_property          (GObject               *object,
                               guint                  param_id,
                               const GValue          *value,
                               GParamSpec            *pspec);
static void             tp_chat_destroy_cb            (TpChan                *text_chan,
                               EmpathyTpChat         *chat);
static void             tp_chat_closed_cb             (TpChan                *text_chan,
                               EmpathyTpChat         *chat);
static void             tp_chat_received_cb           (DBusGProxy            *text_iface,
                               guint                  message_id,
                               guint                  timestamp,
                               guint                  from_handle,
                               guint                  message_type,
                               guint                  message_flags,
                               gchar                 *message_body,
                               EmpathyTpChat         *chat);
static void             tp_chat_sent_cb               (DBusGProxy            *text_iface,
                               guint                  timestamp,
                               guint                  message_type,
                               gchar                 *message_body,
                               EmpathyTpChat         *chat);
static void             tp_chat_send_error_cb         (DBusGProxy            *text_iface,
                               guint                  error_code,
                               guint                  timestamp,
                               guint                  message_type,
                               gchar                 *message_body,
                               EmpathyTpChat         *chat);
static void             tp_chat_state_changed_cb      (DBusGProxy            *chat_state_iface,
                               guint                  handle,
                               TpChannelChatState     state,
                               EmpathyTpChat         *chat);
static EmpathyMessage * tp_chat_build_message         (EmpathyTpChat         *chat,
                               guint                  type,
                               guint                  timestamp,
                               guint                  from_handle,
                               const gchar           *message_body);
static void             tp_chat_properties_ready_cb   (TpPropsIface          *props_iface,
                               EmpathyTpChat         *chat);
static void             tp_chat_properties_changed_cb (TpPropsIface          *props_iface,
                               guint                  prop_id,
                               TpPropsChanged         flag,
                               EmpathyTpChat         *chat);
enum {
    PROP_0,
    PROP_ACCOUNT,
    PROP_TP_CHAN,
    PROP_ACKNOWLEDGE,

    PROP_ANONYMOUS,
    PROP_INVITE_ONLY,
    PROP_LIMIT,
    PROP_LIMITED,
    PROP_MODERATED,
    PROP_NAME,
    PROP_DESCRIPTION,
    PROP_PASSWORD,
    PROP_PASSWORD_REQUIRED,
    PROP_PERSISTENT,
    PROP_PRIVATE,
    PROP_SUBJECT,
    PROP_SUBJECT_CONTACT,
    PROP_SUBJECT_TIMESTAMP
};

enum {
    MESSAGE_RECEIVED,
    SEND_ERROR,
    CHAT_STATE_CHANGED,
    DESTROY,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL];

G_DEFINE_TYPE (EmpathyTpChat, empathy_tp_chat, G_TYPE_OBJECT);

static void
empathy_tp_chat_class_init (EmpathyTpChatClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = tp_chat_finalize;
    object_class->constructor = tp_chat_constructor;
    object_class->get_property = tp_chat_get_property;
    object_class->set_property = tp_chat_set_property;

    /* Construct-only properties */
    g_object_class_install_property (object_class,
                     PROP_ACCOUNT,
                     g_param_spec_object ("account",
                                  "channel Account",
                                  "The account associated with the channel",
                                  MC_TYPE_ACCOUNT,
                                  G_PARAM_READWRITE |
                                  G_PARAM_CONSTRUCT_ONLY));
    g_object_class_install_property (object_class,
                     PROP_TP_CHAN,
                     g_param_spec_object ("tp-chan",
                                  "telepathy channel",
                                  "The text channel for the chat",
                                  TELEPATHY_CHAN_TYPE,
                                  G_PARAM_READWRITE |
                                  G_PARAM_CONSTRUCT_ONLY));

    /* Normal properties */
    g_object_class_install_property (object_class,
                     PROP_ACKNOWLEDGE,
                     g_param_spec_boolean ("acknowledge",
                                   "acknowledge",
                                   "acknowledge",
                                   FALSE,
                                   G_PARAM_READWRITE));

    /* Properties of Text Channel */
    g_object_class_install_property (object_class,
                     PROP_ANONYMOUS,
                     g_param_spec_boolean ("anonymous",
                                   "anonymous",
                                   "anonymous",
                                   FALSE,
                                   G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_INVITE_ONLY,
                     g_param_spec_boolean ("invite-only",
                                   "invite-only",
                                   "invite-only",
                                   FALSE,
                                   G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_LIMIT,
                     g_param_spec_uint ("limit",
                                "limit",
                                "limit",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_LIMITED,
                     g_param_spec_boolean ("limited",
                                   "limited",
                                   "limited",
                                   FALSE,
                                   G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_MODERATED,
                     g_param_spec_boolean ("moderated",
                                   "moderated",
                                   "moderated",
                                   FALSE,
                                   G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_NAME,
                     g_param_spec_string ("name",
                                  "name",
                                  "name",
                                  NULL,
                                  G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_DESCRIPTION,
                     g_param_spec_string ("description",
                                  "description",
                                  "description",
                                  NULL,
                                  G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_PASSWORD,
                     g_param_spec_string ("password",
                                  "password",
                                  "password",
                                  NULL,
                                  G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_PASSWORD_REQUIRED,
                     g_param_spec_boolean ("password-required",
                                   "password-required",
                                   "password-required",
                                   FALSE,
                                   G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_PERSISTENT,
                     g_param_spec_boolean ("persistent",
                                   "persistent",
                                   "persistent",
                                   FALSE,
                                   G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_PRIVATE,
                     g_param_spec_boolean ("private",
                                   "private",
                                   "private"
                                   "private",
                                   FALSE,
                                   G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_SUBJECT,
                     g_param_spec_string ("subject",
                                  "subject",
                                  "subject",
                                  NULL,
                                  G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_SUBJECT_CONTACT,
                     g_param_spec_uint ("subject-contact",
                                "subject-contact",
                                "subject-contact",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_SUBJECT_TIMESTAMP,
                     g_param_spec_uint ("subject-timestamp",
                                "subject-timestamp",
                                "subject-timestamp",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READWRITE));

    /* Signals */
    signals[MESSAGE_RECEIVED] =
        g_signal_new ("message-received",
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  g_cclosure_marshal_VOID__OBJECT,
                  G_TYPE_NONE,
                  1, EMPATHY_TYPE_MESSAGE);

    signals[SEND_ERROR] =
        g_signal_new ("send-error",
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  empathy_marshal_VOID__OBJECT_UINT,
                  G_TYPE_NONE,
                  2, EMPATHY_TYPE_MESSAGE, G_TYPE_UINT);

    signals[CHAT_STATE_CHANGED] =
        g_signal_new ("chat-state-changed",
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  empathy_marshal_VOID__OBJECT_UINT,
                  G_TYPE_NONE,
                  2, EMPATHY_TYPE_CONTACT, G_TYPE_UINT);

    signals[DESTROY] =
        g_signal_new ("destroy",
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE,
                  0);

    g_type_class_add_private (object_class, sizeof (EmpathyTpChatPriv));
}

static void
empathy_tp_chat_init (EmpathyTpChat *chat)
{
}


static void
tp_chat_finalize (GObject *object)
{
    EmpathyTpChatPriv *priv;
    EmpathyTpChat     *chat;
    GError            *error = NULL;

    chat = EMPATHY_TP_CHAT (object);
    priv = GET_PRIV (chat);

    if (priv->text_iface) {
        dbus_g_proxy_disconnect_signal (priv->text_iface, "Received",
                        G_CALLBACK (tp_chat_received_cb),
                        chat);
        dbus_g_proxy_disconnect_signal (priv->text_iface, "Sent",
                        G_CALLBACK (tp_chat_sent_cb),
                        chat);
        dbus_g_proxy_disconnect_signal (priv->text_iface, "SendError",
                        G_CALLBACK (tp_chat_send_error_cb),
                        chat);
    }

    if (priv->chat_state_iface) {
        dbus_g_proxy_disconnect_signal (priv->chat_state_iface, "ChatStateChanged",
                        G_CALLBACK (tp_chat_state_changed_cb),
                        chat);
    }

    if (priv->tp_chan) {
        g_signal_handlers_disconnect_by_func (priv->tp_chan,
                              tp_chat_destroy_cb,
                              object);
        dbus_g_proxy_disconnect_signal (DBUS_G_PROXY (priv->tp_chan), "Closed",
                        G_CALLBACK (tp_chat_closed_cb),
                        chat);
        if (priv->acknowledge) {
            empathy_debug (DEBUG_DOMAIN, "Closing channel...");
            if (!tp_chan_close (DBUS_G_PROXY (priv->tp_chan), &error)) {
                empathy_debug (DEBUG_DOMAIN, 
                          "Error closing text channel: %s",
                          error ? error->message : "No error given");
                g_clear_error (&error);
            }
        }
        g_object_unref (priv->tp_chan);
    }

    if (priv->factory) {
        g_object_unref (priv->factory);
    }
    if (priv->user) {
        g_object_unref (priv->user);
    }
    if (priv->account) {
        g_object_unref (priv->account);
    }
    if (priv->mc) {
        g_object_unref (priv->mc);
    }
    g_free (priv->id);

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

static GObject *
tp_chat_constructor (GType                  type,
             guint                  n_props,
             GObjectConstructParam *props)
{
    GObject           *chat;
    EmpathyTpChatPriv *priv;

    chat = G_OBJECT_CLASS (empathy_tp_chat_parent_class)->constructor (type, n_props, props);

    priv = GET_PRIV (chat);

    priv->factory = empathy_contact_factory_new ();
    priv->user = empathy_contact_factory_get_user (priv->factory, priv->account);
    priv->mc = empathy_mission_control_new ();

    priv->text_iface = tp_chan_get_interface (priv->tp_chan,
                          TP_IFACE_QUARK_CHANNEL_TYPE_TEXT);
    priv->chat_state_iface = tp_chan_get_interface (priv->tp_chan,
                            TP_IFACE_QUARK_CHANNEL_INTERFACE_CHAT_STATE);
    priv->props_iface = tp_chan_get_interface (priv->tp_chan,
                           TP_IFACE_QUARK_PROPERTIES_INTERFACE);

    g_signal_connect (priv->tp_chan, "destroy",
              G_CALLBACK (tp_chat_destroy_cb),
              chat);
    dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->tp_chan), "Closed",
                     G_CALLBACK (tp_chat_closed_cb),
                     chat, NULL);
    dbus_g_proxy_connect_signal (priv->text_iface, "Received",
                     G_CALLBACK (tp_chat_received_cb),
                     chat, NULL);
    dbus_g_proxy_connect_signal (priv->text_iface, "Sent",
                     G_CALLBACK (tp_chat_sent_cb),
                     chat, NULL);
    dbus_g_proxy_connect_signal (priv->text_iface, "SendError",
                     G_CALLBACK (tp_chat_send_error_cb),
                     chat, NULL);

    if (priv->chat_state_iface != NULL) {
        dbus_g_proxy_connect_signal (priv->chat_state_iface,
                         "ChatStateChanged",
                         G_CALLBACK (tp_chat_state_changed_cb),
                         chat, NULL);
    }
    if (priv->props_iface != NULL) {
        tp_props_iface_set_mapping (TELEPATHY_PROPS_IFACE (priv->props_iface),
                        "anonymous", PROP_ANONYMOUS,
                        "invite-only", PROP_INVITE_ONLY,
                        "limit", PROP_LIMIT,
                        "limited", PROP_LIMITED,
                        "moderated", PROP_MODERATED,
                        "name", PROP_NAME,
                        "description", PROP_DESCRIPTION,
                        "password", PROP_PASSWORD,
                        "password-required", PROP_PASSWORD_REQUIRED,
                        "persistent", PROP_PERSISTENT,
                        "private", PROP_PRIVATE,
                        "subject", PROP_SUBJECT,
                        "subject-contact", PROP_SUBJECT_CONTACT,
                        "subject-timestamp", PROP_SUBJECT_TIMESTAMP,
                        NULL);
        g_signal_connect (priv->props_iface, "properties-ready",
                  G_CALLBACK (tp_chat_properties_ready_cb),
                  chat);
        g_signal_connect (priv->props_iface, "properties-changed",
                  G_CALLBACK (tp_chat_properties_changed_cb),
                  chat);
    }

    return chat;
}

static void
tp_chat_get_property (GObject    *object,
              guint       param_id,
              GValue     *value,
              GParamSpec *pspec)
{
    EmpathyTpChatPriv *priv;
    EmpathyTpChat     *chat;

    priv = GET_PRIV (object);
    chat = EMPATHY_TP_CHAT (object);

    if (param_id >= PROP_ANONYMOUS &&
        param_id <= PROP_SUBJECT_TIMESTAMP) {
        if (priv->props_iface) {
            tp_props_iface_get_value (TELEPATHY_PROPS_IFACE (priv->props_iface),
                          param_id,
                          value);
        }

        return;
    }

    switch (param_id) {
    case PROP_ACCOUNT:
        g_value_set_object (value, priv->account);
        break;
    case PROP_TP_CHAN:
        g_value_set_object (value, priv->tp_chan);
        break;
    case PROP_ACKNOWLEDGE:
        g_value_set_boolean (value, priv->acknowledge);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

static void
tp_chat_set_property (GObject      *object,
              guint         param_id,
              const GValue *value,
              GParamSpec   *pspec)
{
    EmpathyTpChatPriv *priv;
    EmpathyTpChat     *chat;

    priv = GET_PRIV (object);
    chat = EMPATHY_TP_CHAT (object);

    if (param_id >= PROP_ANONYMOUS &&
        param_id <= PROP_SUBJECT_TIMESTAMP) {
        if (priv->props_iface) {
            tp_props_iface_set_value (TELEPATHY_PROPS_IFACE (priv->props_iface),
                          param_id,
                          value);
        }

        return;
    }

    switch (param_id) {
    case PROP_ACCOUNT:
        priv->account = g_object_ref (g_value_get_object (value));
        break;
    case PROP_TP_CHAN:
        priv->tp_chan = g_object_ref (g_value_get_object (value));
        break;
    case PROP_ACKNOWLEDGE:
        empathy_tp_chat_set_acknowledge (EMPATHY_TP_CHAT (object),
                         g_value_get_boolean (value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

EmpathyTpChat *
empathy_tp_chat_new (McAccount *account,
             TpChan    *tp_chan)
{
    return g_object_new (EMPATHY_TYPE_TP_CHAT, 
                 "account", account,
                 "tp-chan", tp_chan,
                 NULL);
}

gboolean
empathy_tp_chat_get_acknowledge (EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CHAT (chat), FALSE);

    priv = GET_PRIV (chat);

    return priv->acknowledge;
}

void
empathy_tp_chat_set_acknowledge (EmpathyTpChat *chat,
                 gboolean       acknowledge)
{
    EmpathyTpChatPriv *priv;

    g_return_if_fail (EMPATHY_IS_TP_CHAT (chat));

    priv = GET_PRIV (chat);

    priv->acknowledge = acknowledge;
    g_object_notify (G_OBJECT (chat), "acknowledge");
}

TpChan *
empathy_tp_chat_get_channel (EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CHAT (chat), NULL);

    priv = GET_PRIV (chat);

    return priv->tp_chan;
}

McAccount *
empathy_tp_chat_get_account (EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CHAT (chat), NULL);

    priv = GET_PRIV (chat);

    return priv->account;
}

GList *
empathy_tp_chat_get_pendings (EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;
    GPtrArray         *messages_list;
    guint              i;
    GList             *messages = NULL;
    GError            *error = NULL;

    g_return_val_if_fail (EMPATHY_IS_TP_CHAT (chat), NULL);

    priv = GET_PRIV (chat);

    /* If we do this call async, don't forget to ignore Received signal
     * until we get the answer */
    if (!tp_chan_type_text_list_pending_messages (priv->text_iface,
                              priv->acknowledge,
                              &messages_list,
                              &error)) {
        empathy_debug (DEBUG_DOMAIN, 
                  "Error retrieving pending messages: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
        return NULL;
    }

    for (i = 0; i < messages_list->len; i++) {
        EmpathyMessage *message;
        GValueArray    *message_struct;
        const gchar    *message_body;
        guint           message_id;
        guint           timestamp;
        guint           from_handle;
        guint           message_type;
        guint           message_flags;

        message_struct = g_ptr_array_index (messages_list, i);

        message_id = g_value_get_uint (g_value_array_get_nth (message_struct, 0));
        timestamp = g_value_get_uint (g_value_array_get_nth (message_struct, 1));
        from_handle = g_value_get_uint (g_value_array_get_nth (message_struct, 2));
        message_type = g_value_get_uint (g_value_array_get_nth (message_struct, 3));
        message_flags = g_value_get_uint (g_value_array_get_nth (message_struct, 4));
        message_body = g_value_get_string (g_value_array_get_nth (message_struct, 5));

        empathy_debug (DEBUG_DOMAIN, "Message pending: %s", message_body);

        message = tp_chat_build_message (chat,
                         message_type,
                         timestamp,
                         from_handle,
                         message_body);

        messages = g_list_prepend (messages, message);

        g_value_array_free (message_struct);
    }
    messages = g_list_reverse (messages);

    g_ptr_array_free (messages_list, TRUE);

    return messages;
}

void
empathy_tp_chat_send (EmpathyTpChat *chat,
              EmpathyMessage *message)
{
    EmpathyTpChatPriv *priv;
    const gchar       *message_body;
    EmpathyMessageType  message_type;
    GError            *error = NULL;

    g_return_if_fail (EMPATHY_IS_TP_CHAT (chat));
    g_return_if_fail (EMPATHY_IS_MESSAGE (message));

    priv = GET_PRIV (chat);

    message_body = empathy_message_get_body (message);
    message_type = empathy_message_get_type (message);

    empathy_debug (DEBUG_DOMAIN, "Sending message: %s", message_body);
    if (!tp_chan_type_text_send (priv->text_iface,
                     message_type,
                     message_body,
                     &error)) {
        empathy_debug (DEBUG_DOMAIN, 
                  "Send Error: %s", 
                  error ? error->message : "No error given");
        g_clear_error (&error);
    }
}

void
empathy_tp_chat_set_state (EmpathyTpChat      *chat,
               TpChannelChatState  state)
{
    EmpathyTpChatPriv *priv;
    GError            *error = NULL;

    g_return_if_fail (EMPATHY_IS_TP_CHAT (chat));

    priv = GET_PRIV (chat);

    if (priv->chat_state_iface) {
        empathy_debug (DEBUG_DOMAIN, "Set state: %d", state);
        if (!tp_chan_iface_chat_state_set_chat_state (priv->chat_state_iface,
                                  state,
                                  &error)) {
            empathy_debug (DEBUG_DOMAIN,
                      "Set Chat State Error: %s",
                      error ? error->message : "No error given");
            g_clear_error (&error);
        }
    }
}

const gchar *
empathy_tp_chat_get_id (EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CHAT (chat), NULL);

    priv = GET_PRIV (chat);

    if (!priv->id) {
        priv->id = empathy_inspect_channel (priv->account, priv->tp_chan);
    }

    return priv->id;
}

static void
tp_chat_destroy_cb (TpChan        *text_chan,
            EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;

    priv = GET_PRIV (chat);

    empathy_debug (DEBUG_DOMAIN, "Channel Closed or CM crashed");

    g_object_unref  (priv->tp_chan);
    priv->tp_chan = NULL;
    priv->text_iface = NULL;
    priv->chat_state_iface = NULL;
    priv->props_iface = NULL;

    g_signal_emit (chat, signals[DESTROY], 0);
}

static void
tp_chat_closed_cb (TpChan        *text_chan,
           EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;

    priv = GET_PRIV (chat);

    /* The channel is closed, do just like if the proxy was destroyed */
    g_signal_handlers_disconnect_by_func (priv->tp_chan,
                          tp_chat_destroy_cb,
                          chat);
    tp_chat_destroy_cb (text_chan, chat);
}

static void
tp_chat_received_cb (DBusGProxy    *text_iface,
             guint          message_id,
             guint          timestamp,
             guint          from_handle,
             guint          message_type,
             guint          message_flags,
             gchar         *message_body,
             EmpathyTpChat *chat)
{
    EmpathyTpChatPriv *priv;
    EmpathyMessage    *message;

    priv = GET_PRIV (chat);

    empathy_debug (DEBUG_DOMAIN, "Message received: %s", message_body);

    message = tp_chat_build_message (chat,
                     message_type,
                     timestamp,
                     from_handle,
                     message_body);

    g_signal_emit (chat, signals[MESSAGE_RECEIVED], 0, message);
    g_object_unref (message);

    if (priv->acknowledge) {
        GArray *message_ids;

        message_ids = g_array_new (FALSE, FALSE, sizeof (guint));
        g_array_append_val (message_ids, message_id);
        tp_chan_type_text_acknowledge_pending_messages (priv->text_iface,
                                message_ids, NULL);
        g_array_free (message_ids, TRUE);
    }
}

static void
tp_chat_sent_cb (DBusGProxy    *text_iface,
         guint          timestamp,
         guint          message_type,
         gchar         *message_body,
         EmpathyTpChat *chat)
{
    EmpathyMessage *message;

    empathy_debug (DEBUG_DOMAIN, "Message sent: %s", message_body);

    message = tp_chat_build_message (chat,
                     message_type,
                     timestamp,
                     0,
                     message_body);

    g_signal_emit (chat, signals[MESSAGE_RECEIVED], 0, message);
    g_object_unref (message);
}

static void
tp_chat_send_error_cb (DBusGProxy    *text_iface,
               guint          error_code,
               guint          timestamp,
               guint          message_type,
               gchar         *message_body,
               EmpathyTpChat *chat)
{
    EmpathyMessage *message;

    empathy_debug (DEBUG_DOMAIN, "Message sent error: %s (%d)",
               message_body, error_code);

    message = tp_chat_build_message (chat,
                     message_type,
                     timestamp,
                     0,
                     message_body);

    g_signal_emit (chat, signals[SEND_ERROR], 0, message, error_code);
    g_object_unref (message);
}

static void
tp_chat_state_changed_cb (DBusGProxy         *chat_state_iface,
              guint               handle,
              TpChannelChatState  state,
              EmpathyTpChat      *chat)
{
    EmpathyTpChatPriv *priv;
    EmpathyContact     *contact;

    priv = GET_PRIV (chat);

    contact = empathy_contact_factory_get_from_handle (priv->factory,
                               priv->account,
                               handle);

    empathy_debug (DEBUG_DOMAIN, "Chat state changed for %s (%d): %d",
              empathy_contact_get_name (contact),
              handle,
              state);

    g_signal_emit (chat, signals[CHAT_STATE_CHANGED], 0, contact, state);
    g_object_unref (contact);
}

static EmpathyMessage *
tp_chat_build_message (EmpathyTpChat *chat,
               guint          type,
               guint          timestamp,
               guint          from_handle,
               const gchar   *message_body)
{
    EmpathyTpChatPriv *priv;
    EmpathyMessage    *message;
    EmpathyContact    *sender;

    priv = GET_PRIV (chat);

    if (from_handle == 0) {
        sender = g_object_ref (priv->user);
    } else {
        sender = empathy_contact_factory_get_from_handle (priv->factory,
                                  priv->account,
                                  from_handle);
    }

    message = empathy_message_new (message_body);
    empathy_message_set_type (message, type);
    empathy_message_set_sender (message, sender);
    empathy_message_set_receiver (message, priv->user);
    empathy_message_set_timestamp (message, timestamp);

    g_object_unref (sender);

    return message;
}

static void
tp_chat_properties_ready_cb (TpPropsIface  *props_iface,
                 EmpathyTpChat *chat)
{
    g_object_notify (G_OBJECT (chat), "anonymous");
    g_object_notify (G_OBJECT (chat), "invite-only");
    g_object_notify (G_OBJECT (chat), "limit");
    g_object_notify (G_OBJECT (chat), "limited");
    g_object_notify (G_OBJECT (chat), "moderated");
    g_object_notify (G_OBJECT (chat), "name");
    g_object_notify (G_OBJECT (chat), "description");
    g_object_notify (G_OBJECT (chat), "password");
    g_object_notify (G_OBJECT (chat), "password-required");
    g_object_notify (G_OBJECT (chat), "persistent");
    g_object_notify (G_OBJECT (chat), "private");
    g_object_notify (G_OBJECT (chat), "subject");
    g_object_notify (G_OBJECT (chat), "subject-contact");
    g_object_notify (G_OBJECT (chat), "subject-timestamp");
}

static void
tp_chat_properties_changed_cb (TpPropsIface   *props_iface,
                   guint           prop_id,
                   TpPropsChanged  flag,
                   EmpathyTpChat  *chat)
{
    switch (prop_id) {
    case PROP_ANONYMOUS:
        g_object_notify (G_OBJECT (chat), "anonymous");
        break;
    case PROP_INVITE_ONLY:
        g_object_notify (G_OBJECT (chat), "invite-only");
        break;
    case PROP_LIMIT:
        g_object_notify (G_OBJECT (chat), "limit");
        break;
    case PROP_LIMITED:
        g_object_notify (G_OBJECT (chat), "limited");
        break;
    case PROP_MODERATED:
        g_object_notify (G_OBJECT (chat), "moderated");
        break;
    case PROP_NAME:
        g_object_notify (G_OBJECT (chat), "name");
        break;
    case PROP_DESCRIPTION:
        g_object_notify (G_OBJECT (chat), "description");
        break;
    case PROP_PASSWORD:
        g_object_notify (G_OBJECT (chat), "password");
        break;
    case PROP_PASSWORD_REQUIRED:
        g_object_notify (G_OBJECT (chat), "password-required");
        break;
    case PROP_PERSISTENT:
        g_object_notify (G_OBJECT (chat), "persistent");
        break;
    case PROP_PRIVATE:
        g_object_notify (G_OBJECT (chat), "private");
        break;
    case PROP_SUBJECT:
        g_object_notify (G_OBJECT (chat), "subject");
        break;
    case PROP_SUBJECT_CONTACT:
        g_object_notify (G_OBJECT (chat), "subject-contact");
        break;
    case PROP_SUBJECT_TIMESTAMP:
        g_object_notify (G_OBJECT (chat), "subject-timestamp");
        break;
    }
}