path: root/libempathy/empathy-tp-contact-factory.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007-2008 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 <telepathy-glib/util.h>
#include <telepathy-glib/connection.h>
#include <telepathy-glib/gtypes.h>
#include <libmissioncontrol/mission-control.h>

#include <extensions/extensions.h>

#include "empathy-tp-contact-factory.h"
#include "empathy-utils.h"
#include "empathy-account-manager.h"

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

#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyTpContactFactory)
typedef struct {
    EmpathyAccountManager *account_manager;
    McAccount      *account;
    TpConnection   *connection;
    gboolean        ready;

    GList          *contacts;
    EmpathyContact *user;

    gchar         **avatar_mime_types;
    guint           avatar_min_width;
    guint           avatar_min_height;
    guint           avatar_max_width;
    guint           avatar_max_height;
    guint           avatar_max_size;
  gboolean        can_request_ft;
} EmpathyTpContactFactoryPriv;

G_DEFINE_TYPE (EmpathyTpContactFactory, empathy_tp_contact_factory, G_TYPE_OBJECT);

enum {
    PROP_0,
    PROP_ACCOUNT,
    PROP_READY,

    PROP_MIME_TYPES,
    PROP_MIN_WIDTH,
    PROP_MIN_HEIGHT,
    PROP_MAX_WIDTH,
    PROP_MAX_HEIGHT,
    PROP_MAX_SIZE
};

static EmpathyContact *
tp_contact_factory_find_by_handle (EmpathyTpContactFactory *tp_factory,
                   guint                    handle)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    GList                       *l;

    for (l = priv->contacts; l; l = l->next) {
        if (empathy_contact_get_handle (l->data) == handle) {
            return l->data;
        }
    }

    return NULL;
}

static EmpathyContact *
tp_contact_factory_find_by_id (EmpathyTpContactFactory *tp_factory,
                   const gchar             *id)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    GList                       *l;

    for (l = priv->contacts; l; l = l->next) {
        if (!tp_strdiff (empathy_contact_get_id (l->data), id)) {
            return l->data;
        }
    }

    return NULL;
}

static void
tp_contact_factory_weak_notify (gpointer data,
                GObject *where_the_object_was)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (data);

    DEBUG ("Remove finalized contact %p", where_the_object_was);

    priv->contacts = g_list_remove (priv->contacts, where_the_object_was);
}

static void
tp_contact_factory_presences_table_foreach (const gchar    *state_str,
                        GHashTable     *presences_table,
                        EmpathyContact *contact)
{
    const GValue *message;
    const gchar  *message_str = NULL;

    empathy_contact_set_presence (contact,
                      empathy_presence_from_str (state_str));
    
    message = g_hash_table_lookup (presences_table, "message");
    if (message) {
        message_str = g_value_get_string (message);
    }

    if (!EMP_STR_EMPTY (message_str)) {
        empathy_contact_set_presence_message (contact, message_str);
    } else {
        empathy_contact_set_presence_message (contact, NULL);
    }
}

static void
tp_contact_factory_parse_presence_foreach (guint                    handle,
                       GValueArray             *presence_struct,
                       EmpathyTpContactFactory *tp_factory)
{
    GHashTable      *presences_table;
    EmpathyContact  *contact;

    contact = tp_contact_factory_find_by_handle (tp_factory, handle);
    if (!contact) {
        return;
    }

    presences_table = g_value_get_boxed (g_value_array_get_nth (presence_struct, 1));

    g_hash_table_foreach (presences_table,
                  (GHFunc) tp_contact_factory_presences_table_foreach,
                  contact);

    DEBUG ("Changing presence for contact %s (%d) to '%s' (%d)",
        empathy_contact_get_id (contact),
        handle,
        empathy_contact_get_presence_message (contact),
        empathy_contact_get_presence (contact));
}

static void
tp_contact_factory_get_presence_cb (TpConnection *connection,
                    GHashTable   *handle_table,
                    const GError *error,
                    gpointer      user_data,
                    GObject      *tp_factory)
{
    if (error) {
        DEBUG ("Error getting presence: %s", error->message);
        if (error->domain == TP_DBUS_ERRORS &&
            error->code == TP_DBUS_ERROR_NO_INTERFACE) {
            guint *handles = user_data;

            /* We have no presence iface, set default presence
             * to available */
            while (*handles != 0) {
                EmpathyContact *contact;

                contact = tp_contact_factory_find_by_handle (
                    (EmpathyTpContactFactory*) tp_factory,
                    *handles);
                if (contact) {
                    empathy_contact_set_presence (contact,
                                      MC_PRESENCE_AVAILABLE);
                }

                handles++;
            }
        }

        return;
    }

    g_hash_table_foreach (handle_table,
                  (GHFunc) tp_contact_factory_parse_presence_foreach,
                  EMPATHY_TP_CONTACT_FACTORY (tp_factory));
}

static void
tp_contact_factory_presence_update_cb (TpConnection *connection,
                       GHashTable   *handle_table,
                       gpointer      user_data,
                       GObject      *tp_factory)
{
    g_hash_table_foreach (handle_table,
                  (GHFunc) tp_contact_factory_parse_presence_foreach,
                  EMPATHY_TP_CONTACT_FACTORY (tp_factory));
}

static void
tp_contact_factory_set_aliases_cb (TpConnection *connection,
                   const GError *error,
                   gpointer      user_data,
                   GObject      *tp_factory)
{
    if (error) {
        DEBUG ("Error setting alias: %s", error->message);
    }
}

static void
tp_contact_factory_request_aliases_cb (TpConnection *connection,
                       const gchar  **contact_names,
                       const GError  *error,
                       gpointer       user_data,
                       GObject       *tp_factory)
{
    guint        *handles = user_data;
    guint         i = 0;
    const gchar **name;

    if (error) {
        DEBUG ("Error requesting aliases: %s", error->message);

        /* If we failed to get alias set it to NULL, like that if
         * someone is waiting for the name to be ready it won't wait
         * infinitely */
        while (*handles != 0) {
            EmpathyContact *contact;

            contact = tp_contact_factory_find_by_handle (
                (EmpathyTpContactFactory*) tp_factory,
                *handles);
            if (contact) {
                empathy_contact_set_name (contact, NULL);
            }

            handles++;
        }
        return;
    }

    for (name = contact_names; *name; name++) {
        EmpathyContact *contact;

        contact = tp_contact_factory_find_by_handle (EMPATHY_TP_CONTACT_FACTORY (tp_factory),
                                 handles[i]);
        if (!contact) {
            continue;
        }

        DEBUG ("Renaming contact %s (%d) to %s (request cb)",
            empathy_contact_get_id (contact),
            empathy_contact_get_handle (contact),
            *name);

        empathy_contact_set_name (contact, *name);

        i++;
    }
}

static void
tp_contact_factory_aliases_changed_cb (TpConnection    *connection,
                       const GPtrArray *renamed_handlers,
                       gpointer         user_data,
                       GObject         *weak_object)
{
    EmpathyTpContactFactory *tp_factory = EMPATHY_TP_CONTACT_FACTORY (weak_object);
    guint                    i;

    for (i = 0; renamed_handlers->len > i; i++) {
        guint           handle;
        const gchar    *alias;
        GValueArray    *renamed_struct;
        EmpathyContact *contact;

        renamed_struct = g_ptr_array_index (renamed_handlers, i);
        handle = g_value_get_uint (g_value_array_get_nth (renamed_struct, 0));
        alias = g_value_get_string (g_value_array_get_nth (renamed_struct, 1));
        contact = tp_contact_factory_find_by_handle (tp_factory, handle);

        if (!contact) {
            /* We don't know this contact, skip */
            continue;
        }

        DEBUG ("Renaming contact %s (%d) to %s (changed cb)",
            empathy_contact_get_id (contact),
            handle, alias);

        empathy_contact_set_name (contact, alias);
    }
}

static void
tp_contact_factory_set_avatar_cb (TpConnection *connection,
                  const gchar  *token,
                  const GError *error,
                  gpointer      user_data,
                  GObject      *tp_factory)
{
    if (error) {
        DEBUG ("Error setting avatar: %s", error->message);
    }
}

static void
tp_contact_factory_clear_avatar_cb (TpConnection *connection,
                    const GError *error,
                    gpointer      user_data,
                    GObject      *tp_factory)
{
    if (error) {
        DEBUG ("Error clearing avatar: %s", error->message);
    }
}

static void
tp_contact_factory_avatar_retrieved_cb (TpConnection *connection,
                    guint         handle,
                    const gchar  *token,
                    const GArray *avatar_data,
                    const gchar  *mime_type,
                    gpointer      user_data,
                    GObject      *tp_factory)
{
    EmpathyContact *contact;

    contact = tp_contact_factory_find_by_handle (EMPATHY_TP_CONTACT_FACTORY (tp_factory),
                             handle);
    if (!contact) {
        return;
    }

    DEBUG ("Avatar retrieved for contact %s (%d)",
        empathy_contact_get_id (contact),
        handle);

    empathy_contact_load_avatar_data (contact,
                      avatar_data->data,
                      avatar_data->len,
                      mime_type,
                      token);
}

static void
tp_contact_factory_request_avatars_cb (TpConnection *connection,
                       const GError *error,
                       gpointer      user_data,
                       GObject      *tp_factory)
{
    if (error) {
        DEBUG ("Error requesting avatars: %s", error->message);
    }
}

static gboolean
tp_contact_factory_avatar_maybe_update (EmpathyTpContactFactory *tp_factory,
                    guint                    handle,
                    const gchar             *token)
{
    EmpathyContact *contact;
    EmpathyAvatar  *avatar;

    contact = tp_contact_factory_find_by_handle (tp_factory, handle);
    if (!contact) {
        return TRUE;
    }

    /* Check if we have an avatar */
    if (EMP_STR_EMPTY (token)) {
        empathy_contact_set_avatar (contact, NULL);
        return TRUE;
    }

    /* Check if the avatar changed */
    avatar = empathy_contact_get_avatar (contact);
    if (avatar && !tp_strdiff (avatar->token, token)) {
        return TRUE;
    }

    /* The avatar changed, search the new one in the cache */
    if (empathy_contact_load_avatar_cache (contact, token)) {
        /* Got from cache, use it */
        return TRUE;
    }

    /* Avatar is not up-to-date, we have to request it. */
    return FALSE;
}

typedef struct {
    EmpathyTpContactFactory *tp_factory;
    GArray                  *handles;
} TokensData;

static void
tp_contact_factory_avatar_tokens_foreach (gpointer key,
                      gpointer value,
                      gpointer user_data)
{
    TokensData  *data = user_data;
    const gchar *token = value;
    guint        handle = GPOINTER_TO_UINT (key);

    if (!tp_contact_factory_avatar_maybe_update (data->tp_factory,
                             handle, token)) {
        g_array_append_val (data->handles, handle);
    }
}

static void
tp_contact_factory_get_known_avatar_tokens_cb (TpConnection *connection,
                           GHashTable   *tokens,
                           const GError *error,
                           gpointer      user_data,
                           GObject      *tp_factory)
{
    TokensData data;

    if (error) {
        DEBUG ("Error getting known avatars tokens: %s", error->message);
        return;
    }

    data.tp_factory = EMPATHY_TP_CONTACT_FACTORY (tp_factory);
    data.handles = g_array_new (FALSE, FALSE, sizeof (guint));
    g_hash_table_foreach (tokens,
                  tp_contact_factory_avatar_tokens_foreach,
                  &data);

    DEBUG ("Got %d tokens, need to request %d avatars",
        g_hash_table_size (tokens), data.handles->len);

    /* Request needed avatars */
    if (data.handles->len > 0) {
        tp_cli_connection_interface_avatars_call_request_avatars (connection,
                                      -1,
                                      data.handles,
                                      tp_contact_factory_request_avatars_cb,
                                      NULL, NULL,
                                      tp_factory);
    }

    g_array_free (data.handles, TRUE);
}

static void
tp_contact_factory_avatar_updated_cb (TpConnection *connection,
                      guint         handle,
                      const gchar  *new_token,
                      gpointer      user_data,
                      GObject      *tp_factory)
{
    GArray *handles;

    if (tp_contact_factory_avatar_maybe_update (EMPATHY_TP_CONTACT_FACTORY (tp_factory),
                            handle, new_token)) {
        /* Avatar was cached, nothing to do */
        return;
    }

    DEBUG ("Need to request avatar for token %s", new_token);

    handles = g_array_new (FALSE, FALSE, sizeof (guint));
    g_array_append_val (handles, handle);

    tp_cli_connection_interface_avatars_call_request_avatars (connection,
                                  -1,
                                  handles,
                                  tp_contact_factory_request_avatars_cb,
                                  NULL, NULL,
                                  tp_factory);
    g_array_free (handles, TRUE);
}

static void
tp_contact_factory_update_capabilities (EmpathyTpContactFactory *tp_factory,
                    guint                    handle,
                    const gchar             *channel_type,
                    guint                    generic,
                    guint                    specific)
{
    EmpathyContact      *contact;
    EmpathyCapabilities  capabilities;

    contact = tp_contact_factory_find_by_handle (tp_factory, handle);
    if (!contact) {
        return;
    }

    capabilities = empathy_contact_get_capabilities (contact);
    capabilities &= ~EMPATHY_CAPABILITIES_UNKNOWN;

    if (strcmp (channel_type, TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA) == 0) {
        capabilities &= ~EMPATHY_CAPABILITIES_AUDIO;
        capabilities &= ~EMPATHY_CAPABILITIES_VIDEO;
        if (specific & TP_CHANNEL_MEDIA_CAPABILITY_AUDIO) {
            capabilities |= EMPATHY_CAPABILITIES_AUDIO;
        }
        if (specific & TP_CHANNEL_MEDIA_CAPABILITY_VIDEO) {
            capabilities |= EMPATHY_CAPABILITIES_VIDEO;
        }
    }

    DEBUG ("Changing capabilities for contact %s (%d) to %d",
        empathy_contact_get_id (contact),
        empathy_contact_get_handle (contact),
        capabilities);

    empathy_contact_set_capabilities (contact, capabilities);
}

static void
tp_contact_factory_get_capabilities_cb (TpConnection    *connection,
                    const GPtrArray *capabilities,
                    const GError    *error,
                    gpointer         user_data,
                    GObject         *weak_object)
{
    EmpathyTpContactFactory *tp_factory = EMPATHY_TP_CONTACT_FACTORY (weak_object);
    guint                    i;

    if (error) {
        DEBUG ("Error getting capabilities: %s", error->message);
        /* FIXME Should set the capabilities of the contacts for which this request
         * originated to NONE */
        return;
    }

    for (i = 0; i < capabilities->len; i++) {
        GValueArray *values;
        guint        handle;
        const gchar *channel_type;
        guint        generic;
        guint        specific;

        values = g_ptr_array_index (capabilities, i);
        handle = g_value_get_uint (g_value_array_get_nth (values, 0));
        channel_type = g_value_get_string (g_value_array_get_nth (values, 1));
        generic = g_value_get_uint (g_value_array_get_nth (values, 2));
        specific = g_value_get_uint (g_value_array_get_nth (values, 3));

        tp_contact_factory_update_capabilities (tp_factory,
                            handle,
                            channel_type,
                            generic,
                            specific);
    }
}

static void
tp_contact_factory_capabilities_changed_cb (TpConnection    *connection,
                        const GPtrArray *capabilities,
                        gpointer         user_data,
                        GObject         *weak_object)
{
    EmpathyTpContactFactory *tp_factory = EMPATHY_TP_CONTACT_FACTORY (weak_object);
    guint                    i;

    for (i = 0; i < capabilities->len; i++) {
        GValueArray *values;
        guint        handle;
        const gchar *channel_type;
        guint        generic;
        guint        specific;

        values = g_ptr_array_index (capabilities, i);
        handle = g_value_get_uint (g_value_array_get_nth (values, 0));
        channel_type = g_value_get_string (g_value_array_get_nth (values, 1));
        generic = g_value_get_uint (g_value_array_get_nth (values, 3));
        specific = g_value_get_uint (g_value_array_get_nth (values, 5));

        tp_contact_factory_update_capabilities (tp_factory,
                            handle,
                            channel_type,
                            generic,
                            specific);
    }
}

static void
tp_contact_factory_request_everything (EmpathyTpContactFactory *tp_factory,
                       const GArray            *handles)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    guint                       *dup_handles;

    g_return_if_fail (priv->ready);

    dup_handles = g_malloc0 ((handles->len + 1) * sizeof (guint));
    g_memmove (dup_handles, handles->data, handles->len * sizeof (guint));
    tp_cli_connection_interface_presence_call_get_presence (priv->connection,
                                -1,
                                handles,
                                tp_contact_factory_get_presence_cb,
                                dup_handles, g_free,
                                G_OBJECT (tp_factory));

    /* FIXME: Sometimes the dbus call timesout because CM takes
     * too much time to request all aliases from the server,
     * that's why we increase the timeout here. See fd.o bug #14795 */
    dup_handles = g_malloc0 ((handles->len + 1) * sizeof (guint));
    g_memmove (dup_handles, handles->data, handles->len * sizeof (guint));
    tp_cli_connection_interface_aliasing_call_request_aliases (priv->connection,
                                   5*60*1000,
                                   handles,
                                   tp_contact_factory_request_aliases_cb,
                                   dup_handles, g_free,
                                   G_OBJECT (tp_factory));

    tp_cli_connection_interface_avatars_call_get_known_avatar_tokens (priv->connection,
                                      -1,
                                      handles,
                                      tp_contact_factory_get_known_avatar_tokens_cb,
                                      NULL, NULL,
                                      G_OBJECT (tp_factory));

    tp_cli_connection_interface_capabilities_call_get_capabilities (priv->connection,
                                    -1,
                                    handles,
                                    tp_contact_factory_get_capabilities_cb,
                                    NULL, NULL,
                                    G_OBJECT (tp_factory));
}

static void
tp_contact_factory_list_free (gpointer data)
{
    GList *l = data;

    g_list_foreach (l, (GFunc) g_object_unref, NULL);
    g_list_free (l);
}

static void
tp_contact_factory_request_handles_cb (TpConnection *connection,
                       const GArray *handles,
                       const GError *error,
                       gpointer      user_data,
                       GObject      *tp_factory)
{
    GList *contacts = user_data;
    GList *l;
    guint  i = 0;

    if (error) {
        DEBUG ("Failed to request handles: %s", error->message);
        return;
    }

    for (l = contacts; l; l = l->next) {
        guint handle;

        handle = g_array_index (handles, guint, i);
        empathy_contact_set_handle (l->data, handle);

        i++;
    }

    tp_contact_factory_request_everything (EMPATHY_TP_CONTACT_FACTORY (tp_factory),
                           handles);
}

static void
tp_contact_factory_inspect_handles_cb (TpConnection  *connection,
                       const gchar  **ids,
                       const GError  *error,
                       gpointer       user_data,
                       GObject       *tp_factory)
{
    const gchar **id;
    GList        *contacts = user_data;
    GList        *l;

    if (error) {
        DEBUG ("Failed to inspect handles: %s", error->message);
        return;
    }

    id = ids;
    for (l = contacts; l; l = l->next) {
        empathy_contact_set_id (l->data, *id);
        id++;
    }
}

static void
tp_contact_factory_disconnect_contact_foreach (gpointer data,
                           gpointer user_data)
{
    EmpathyContact *contact = data;
    
    empathy_contact_set_presence (contact, MC_PRESENCE_UNSET);
    empathy_contact_set_handle (contact, 0);
}

static void
tp_contact_factory_connection_invalidated_cb (EmpathyTpContactFactory *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    DEBUG ("Connection invalidated");

    g_object_unref (priv->connection);
    priv->connection = NULL;
    priv->ready = FALSE;
    g_object_notify (G_OBJECT (tp_factory), "ready");


    g_list_foreach (priv->contacts,
            tp_contact_factory_disconnect_contact_foreach,
            tp_factory);
}

static void
tp_contact_factory_ready (EmpathyTpContactFactory *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    GList                       *l;
    GArray                      *handle_needed;
    GArray                      *id_needed;
    GList                       *handle_needed_contacts = NULL;
    GList                       *id_needed_contacts = NULL;

    DEBUG ("Connection ready");

    priv->ready = TRUE;
    g_object_notify (G_OBJECT (tp_factory), "ready");

    /* Connect signals */
    tp_cli_connection_interface_aliasing_connect_to_aliases_changed (priv->connection,
                                     tp_contact_factory_aliases_changed_cb,
                                     NULL, NULL,
                                     G_OBJECT (tp_factory),
                                     NULL);
    tp_cli_connection_interface_avatars_connect_to_avatar_updated (priv->connection,
                                       tp_contact_factory_avatar_updated_cb,
                                       NULL, NULL,
                                       G_OBJECT (tp_factory),
                                       NULL);
    tp_cli_connection_interface_avatars_connect_to_avatar_retrieved (priv->connection,
                                     tp_contact_factory_avatar_retrieved_cb,
                                     NULL, NULL,
                                     G_OBJECT (tp_factory),
                                     NULL);
    tp_cli_connection_interface_presence_connect_to_presence_update (priv->connection,
                                     tp_contact_factory_presence_update_cb,
                                     NULL, NULL,
                                     G_OBJECT (tp_factory),
                                     NULL);
    tp_cli_connection_interface_capabilities_connect_to_capabilities_changed (priv->connection,
                                          tp_contact_factory_capabilities_changed_cb,
                                          NULL, NULL,
                                          G_OBJECT (tp_factory),
                                          NULL);

    /* Request needed info for all existing contacts */
    handle_needed = g_array_new (TRUE, FALSE, sizeof (gchar*));
    id_needed = g_array_new (FALSE, FALSE, sizeof (guint));
    for (l = priv->contacts; l; l = l->next) {
        EmpathyContact *contact;
        guint           handle;
        const gchar    *id;

        contact = l->data;
        handle = empathy_contact_get_handle (contact);
        id = empathy_contact_get_id (contact);
        if (handle == 0) {
            g_assert (!EMP_STR_EMPTY (id));
            g_array_append_val (handle_needed, id);
            handle_needed_contacts = g_list_prepend (handle_needed_contacts,
                                 g_object_ref (contact));
        }
        if (EMP_STR_EMPTY (id)) {
            g_array_append_val (id_needed, handle);
            id_needed_contacts = g_list_prepend (id_needed_contacts,
                                 g_object_ref (contact));
        }
    }
    handle_needed_contacts = g_list_reverse (handle_needed_contacts);
    id_needed_contacts = g_list_reverse (id_needed_contacts);

    tp_cli_connection_call_request_handles (priv->connection,
                        -1,
                        TP_HANDLE_TYPE_CONTACT,
                        (const gchar**) handle_needed->data,
                        tp_contact_factory_request_handles_cb,
                        handle_needed_contacts, tp_contact_factory_list_free,
                        G_OBJECT (tp_factory));

    tp_cli_connection_call_inspect_handles (priv->connection,
                        -1,
                        TP_HANDLE_TYPE_CONTACT,
                        id_needed,
                        tp_contact_factory_inspect_handles_cb,
                        id_needed_contacts, tp_contact_factory_list_free,
                        G_OBJECT (tp_factory));

    tp_contact_factory_request_everything ((EmpathyTpContactFactory*) tp_factory,
                           id_needed);

    g_array_free (handle_needed, TRUE);
    g_array_free (id_needed, TRUE);
}

static void
get_requestable_channel_classes_cb (TpProxy *connection,
                    const GValue *value,
                    const GError *error,
                    gpointer user_data,
                    GObject *weak_object)
{
    EmpathyTpContactFactory     *self = EMPATHY_TP_CONTACT_FACTORY (weak_object);
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (self);
    GPtrArray                   *classes;
    guint                        i;

    if (error != NULL) {
        DEBUG ("Error: %s", error->message);
        tp_contact_factory_ready (self);
        return;
    }

    classes = g_value_get_boxed (value);
    for (i = 0; i < classes->len; i++) {
        GValue class = {0,};
        GValue *chan_type, *handle_type;
        GHashTable *fixed_prop;
        GList *l;

        g_value_init (&class, TP_STRUCT_TYPE_REQUESTABLE_CHANNEL_CLASS);
        g_value_set_static_boxed (&class, g_ptr_array_index (classes, i));

        dbus_g_type_struct_get (&class,
                    0, &fixed_prop,
                    G_MAXUINT);

        chan_type = g_hash_table_lookup (fixed_prop,
            TP_IFACE_CHANNEL ".ChannelType");
        if (chan_type == NULL ||
            tp_strdiff (g_value_get_string (chan_type),
                    EMP_IFACE_CHANNEL_TYPE_FILE_TRANSFER)) {
            continue;
        }

        handle_type = g_hash_table_lookup (fixed_prop,
            TP_IFACE_CHANNEL ".TargetHandleType");
        if (handle_type == NULL ||
            g_value_get_uint (handle_type) != TP_HANDLE_TYPE_CONTACT) {
            continue;
        }

        /* We can request file transfer channel to contacts. */
        priv->can_request_ft = TRUE;

        /* Update the capabilities of all contacts */
        for (l = priv->contacts; l != NULL; l = g_list_next (l)) {
            EmpathyContact *contact = l->data;
            EmpathyCapabilities caps;

            caps = empathy_contact_get_capabilities (contact);
            empathy_contact_set_capabilities (contact, caps |
                EMPATHY_CAPABILITIES_FT);
        }
        break;
    }

    tp_contact_factory_ready (self);
}

static void
tp_contact_factory_got_avatar_requirements_cb (TpConnection *proxy,
                           const gchar **mime_types,
                           guint         min_width,
                           guint         min_height,
                           guint         max_width,
                           guint         max_height,
                           guint         max_size,
                           const GError *error,
                           gpointer      user_data,
                           GObject      *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    if (error) {
        DEBUG ("Failed to get avatar requirements: %s", error->message);
        /* We'll just leave avatar_mime_types as NULL; the
         * avatar-setting code can use this as a signal that you can't
         * set avatars.
         */
    } else {
        priv->avatar_mime_types = g_strdupv ((gchar **) mime_types);
        priv->avatar_min_width = min_width;
        priv->avatar_min_height = min_height;
        priv->avatar_max_width = max_width;
        priv->avatar_max_height = max_height;
        priv->avatar_max_size = max_size;
    }

    /* Can we request file transfer channels? */
    tp_cli_dbus_properties_call_get (priv->connection, -1,
        TP_IFACE_CONNECTION_INTERFACE_REQUESTS,
        "RequestableChannelClasses",
        get_requestable_channel_classes_cb, NULL, NULL,
        G_OBJECT (tp_factory));
}

static void
tp_contact_factory_got_self_handle_cb (TpConnection *proxy,
                       guint         handle,
                       const GError *error,
                       gpointer      user_data,
                       GObject      *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    if (error) {
        DEBUG ("Failed to get self handles: %s", error->message);
        return;
    }

    empathy_contact_set_handle (priv->user, handle);

    /* Get avatar requirements for this connection */
    tp_cli_connection_interface_avatars_call_get_avatar_requirements (
        priv->connection,
        -1,
        tp_contact_factory_got_avatar_requirements_cb,
        NULL, NULL,
        tp_factory);
}

static void
tp_contact_factory_connection_ready_cb (EmpathyTpContactFactory *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    /* Get our own handle */
    tp_cli_connection_call_get_self_handle (priv->connection,
                        -1,
                        tp_contact_factory_got_self_handle_cb,
                        NULL, NULL,
                        G_OBJECT (tp_factory));
}

static void
tp_contact_factory_status_updated (EmpathyTpContactFactory *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    gboolean                     connection_ready;
    MissionControl              *mc;

    if (priv->connection) {
        /* We already have our connection object */
        return;
    }

    mc = empathy_mission_control_dup_singleton ();
    priv->connection = mission_control_get_tpconnection (mc, priv->account, NULL);
    if (!priv->connection) {
        return;
    }

    /* We got a new connection, wait for it to be ready */
    g_signal_connect_swapped (priv->connection, "invalidated",
                  G_CALLBACK (tp_contact_factory_connection_invalidated_cb),
                  tp_factory);

    g_object_get (priv->connection, "connection-ready", &connection_ready, NULL);
    if (connection_ready) {
        tp_contact_factory_connection_ready_cb (tp_factory);
    } else {
        g_signal_connect_swapped (priv->connection, "notify::connection-ready",
                      G_CALLBACK (tp_contact_factory_connection_ready_cb),
                      tp_factory);
    }

    g_object_unref (mc);
}

static void
tp_contact_factory_account_connection_cb (EmpathyAccountManager *account_manager,
                      McAccount *account,
                      TpConnectionStatusReason reason,
                      TpConnectionStatus current,
                      TpConnectionStatus previous,
                      EmpathyTpContactFactory  *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    if (account && empathy_account_equal (account, priv->account)) {
        tp_contact_factory_status_updated (tp_factory);
    }
}

static void
tp_contact_factory_add_contact (EmpathyTpContactFactory *tp_factory,
                EmpathyContact          *contact)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    g_object_weak_ref (G_OBJECT (contact),
               tp_contact_factory_weak_notify,
               tp_factory);
    priv->contacts = g_list_prepend (priv->contacts, contact);

    DEBUG ("Contact added: %s (%d)",
        empathy_contact_get_id (contact),
        empathy_contact_get_handle (contact));
}

static void
tp_contact_factory_hold_handles_cb (TpConnection *connection,
                    const GError *error,
                    gpointer      userdata,
                    GObject      *tp_factory)
{
    if (error) {
        DEBUG ("Failed to hold handles: %s", error->message);
    }
}

EmpathyContact *
empathy_tp_contact_factory_get_user (EmpathyTpContactFactory *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_FACTORY (tp_factory), NULL);

    return g_object_ref (priv->user);
}

static void
contact_created (EmpathyTpContactFactory *self,
                 EmpathyContact *contact)
{
  EmpathyTpContactFactoryPriv *priv = GET_PRIV (self);

  if (priv->can_request_ft)
    {
      /* Set the FT capability */
      /* FIXME: We should use the futur ContactCapabilities interface */
      EmpathyCapabilities caps;

      caps = empathy_contact_get_capabilities (contact);
      caps |= EMPATHY_CAPABILITIES_FT;

      empathy_contact_set_capabilities (contact, caps);
    }

  tp_contact_factory_add_contact (self, contact);
}

EmpathyContact *
empathy_tp_contact_factory_get_from_id (EmpathyTpContactFactory *tp_factory,
                    const gchar             *id)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    EmpathyContact              *contact;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_FACTORY (tp_factory), NULL);
    g_return_val_if_fail (id != NULL, NULL);

    /* Check if the contact already exists */
    contact = tp_contact_factory_find_by_id (tp_factory, id);
    if (contact) {
        return g_object_ref (contact);
    }

    /* Create new contact */
    contact = g_object_new (EMPATHY_TYPE_CONTACT,
                "account", priv->account,
                "id", id,
                NULL);
    contact_created (tp_factory, contact);

    if (priv->ready) {
        const gchar *contact_ids[] = {id, NULL};
        GList       *contacts;
        
        contacts = g_list_prepend (NULL, g_object_ref (contact));
        tp_cli_connection_call_request_handles (priv->connection,
                            -1,
                            TP_HANDLE_TYPE_CONTACT,
                            contact_ids,
                            tp_contact_factory_request_handles_cb,
                            contacts, tp_contact_factory_list_free,
                            G_OBJECT (tp_factory));
    }

    return contact;
}

EmpathyContact *
empathy_tp_contact_factory_get_from_handle (EmpathyTpContactFactory *tp_factory,
                        guint                    handle)
{
    EmpathyContact *contact;
    GArray         *handles;
    GList          *contacts;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_FACTORY (tp_factory), NULL);

    handles = g_array_new (FALSE, FALSE, sizeof (guint));
    g_array_append_val (handles, handle);

    contacts = empathy_tp_contact_factory_get_from_handles (tp_factory, handles);
    g_array_free (handles, TRUE);

    contact = contacts ? contacts->data : NULL;
    g_list_free (contacts);

    return contact;
}

GList *
empathy_tp_contact_factory_get_from_handles (EmpathyTpContactFactory *tp_factory,
                         const GArray            *handles)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    GList                       *contacts = NULL;
    GArray                      *new_handles;
    GList                       *new_contacts = NULL;
    guint                        i;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_FACTORY (tp_factory), NULL);
    g_return_val_if_fail (handles != NULL, NULL);

    /* Search all contacts we already have */
    new_handles = g_array_new (FALSE, FALSE, sizeof (guint));
    for (i = 0; i < handles->len; i++) {
        EmpathyContact *contact;
        guint           handle;

        handle = g_array_index (handles, guint, i);
        if (handle == 0) {
            continue;
        }

        contact = tp_contact_factory_find_by_handle (tp_factory, handle);
        if (contact) {
            contacts = g_list_prepend (contacts, g_object_ref (contact));
        } else {
            g_array_append_val (new_handles, handle);
        }
    }

    if (new_handles->len == 0) {
        g_array_free (new_handles, TRUE);
        return contacts;
    }

    /* Create new contacts */
    for (i = 0; i < new_handles->len; i++) {
        EmpathyContact *contact;
        guint           handle;

        handle = g_array_index (new_handles, guint, i);

        contact = g_object_new (EMPATHY_TYPE_CONTACT,
                    "account", priv->account,
                    "handle", handle,
                    NULL);
        contact_created (tp_factory, contact);
        contacts = g_list_prepend (contacts, contact);
        new_contacts = g_list_prepend (new_contacts, g_object_ref (contact));
    }
    new_contacts = g_list_reverse (new_contacts);

    if (priv->ready) {
        /* Get the IDs of all new handles */
        tp_cli_connection_call_inspect_handles (priv->connection,
                            -1,
                            TP_HANDLE_TYPE_CONTACT,
                            new_handles,
                            tp_contact_factory_inspect_handles_cb,
                            new_contacts, tp_contact_factory_list_free,
                            G_OBJECT (tp_factory));

        /* Hold all new handles. */
        /* FIXME: Should be unholded when removed from the factory */
        tp_cli_connection_call_hold_handles (priv->connection,
                             -1,
                             TP_HANDLE_TYPE_CONTACT,
                             new_handles,
                             tp_contact_factory_hold_handles_cb,
                             NULL, NULL,
                             G_OBJECT (tp_factory));

        tp_contact_factory_request_everything (tp_factory, new_handles);
    }

    g_array_free (new_handles, TRUE);

    return contacts;
}

void
empathy_tp_contact_factory_set_alias (EmpathyTpContactFactory *tp_factory,
                      EmpathyContact          *contact,
                      const gchar             *alias)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);
    GHashTable                  *new_alias;
    guint                        handle;

    g_return_if_fail (EMPATHY_IS_TP_CONTACT_FACTORY (tp_factory));
    g_return_if_fail (EMPATHY_IS_CONTACT (contact));
    g_return_if_fail (priv->ready);
    g_return_if_fail (empathy_account_equal (empathy_contact_get_account (contact),
                         priv->account));

    handle = empathy_contact_get_handle (contact);

    DEBUG ("Setting alias for contact %s (%d) to %s",
        empathy_contact_get_id (contact),
        handle, alias);

    new_alias = g_hash_table_new_full (g_direct_hash,
                       g_direct_equal,
                       NULL,
                       g_free);

    g_hash_table_insert (new_alias,
                 GUINT_TO_POINTER (handle),
                 g_strdup (alias));

    tp_cli_connection_interface_aliasing_call_set_aliases (priv->connection,
                                   -1,
                                   new_alias,
                                   tp_contact_factory_set_aliases_cb,
                                   NULL, NULL,
                                   G_OBJECT (tp_factory));

    g_hash_table_destroy (new_alias);
}

void
empathy_tp_contact_factory_set_avatar (EmpathyTpContactFactory *tp_factory,
                       const gchar             *data,
                       gsize                    size,
                       const gchar             *mime_type)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    g_return_if_fail (EMPATHY_IS_TP_CONTACT_FACTORY (tp_factory));
    g_return_if_fail (priv->ready);

    if (data && size > 0 && size < G_MAXUINT) {
        GArray avatar;

        avatar.data = (gchar*) data;
        avatar.len = size;

        DEBUG ("Setting avatar on account %s",
            mc_account_get_unique_name (priv->account));

        tp_cli_connection_interface_avatars_call_set_avatar (priv->connection,
                                     -1,
                                     &avatar,
                                     mime_type,
                                     tp_contact_factory_set_avatar_cb,
                                     NULL, NULL,
                                     G_OBJECT (tp_factory));
    } else {
        DEBUG ("Clearing avatar on account %s",
            mc_account_get_unique_name (priv->account));

        tp_cli_connection_interface_avatars_call_clear_avatar (priv->connection,
                                       -1,
                                       tp_contact_factory_clear_avatar_cb,
                                       NULL, NULL,
                                       G_OBJECT (tp_factory));
    }
}

gboolean
empathy_tp_contact_factory_is_ready (EmpathyTpContactFactory *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (tp_factory);

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_FACTORY (tp_factory), FALSE);

    return priv->ready;
}

static void
tp_contact_factory_get_property (GObject    *object,
                 guint       param_id,
                 GValue     *value,
                 GParamSpec *pspec)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (object);

    switch (param_id) {
    case PROP_ACCOUNT:
        g_value_set_object (value, priv->account);
        break;
    case PROP_READY:
        g_value_set_boolean (value, priv->ready);
        break;
    case PROP_MIME_TYPES:
        g_value_set_boxed (value, priv->avatar_mime_types);
        break;
    case PROP_MIN_WIDTH:
        g_value_set_uint (value, priv->avatar_min_width);
        break;
    case PROP_MIN_HEIGHT:
        g_value_set_uint (value, priv->avatar_min_height);
        break;
    case PROP_MAX_WIDTH:
        g_value_set_uint (value, priv->avatar_max_width);
        break;
    case PROP_MAX_HEIGHT:
        g_value_set_uint (value, priv->avatar_max_height);
        break;
    case PROP_MAX_SIZE:
        g_value_set_uint (value, priv->avatar_max_size);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

static void
tp_contact_factory_set_property (GObject      *object,
                 guint         param_id,
                 const GValue *value,
                 GParamSpec   *pspec)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (object);

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

static void
tp_contact_factory_finalize (GObject *object)
{
    EmpathyTpContactFactoryPriv *priv = GET_PRIV (object);
    GList                       *l;

    DEBUG ("Finalized: %p (%s)", object,
        mc_account_get_normalized_name (priv->account));

    g_signal_handlers_disconnect_by_func (priv->account_manager,
                          tp_contact_factory_account_connection_cb,
                          object);

    for (l = priv->contacts; l; l = l->next) {
        g_object_weak_unref (G_OBJECT (l->data),
                     tp_contact_factory_weak_notify,
                     object);
    }

    g_list_free (priv->contacts);
    g_object_unref (priv->account_manager);
    g_object_unref (priv->account);
    g_object_unref (priv->user);

    if (priv->connection) {
        g_signal_handlers_disconnect_by_func (priv->connection,
                              tp_contact_factory_connection_invalidated_cb,
                              object);
        g_object_unref (priv->connection);
    }

    g_strfreev (priv->avatar_mime_types);

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

static GObject *
tp_contact_factory_constructor (GType                  type,
                guint                  n_props,
                GObjectConstructParam *props)
{
    GObject *tp_factory;
    EmpathyTpContactFactoryPriv *priv;

    tp_factory = G_OBJECT_CLASS (empathy_tp_contact_factory_parent_class)->constructor (type, n_props, props);
    priv = GET_PRIV (tp_factory);

    priv->ready = FALSE;
    priv->user = empathy_contact_new (priv->account);
    empathy_contact_set_is_user (priv->user, TRUE);
    tp_contact_factory_add_contact ((EmpathyTpContactFactory*) tp_factory, priv->user);
    tp_contact_factory_status_updated (EMPATHY_TP_CONTACT_FACTORY (tp_factory));

    return tp_factory;
}

static void
empathy_tp_contact_factory_class_init (EmpathyTpContactFactoryClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = tp_contact_factory_finalize;
    object_class->constructor = tp_contact_factory_constructor;
    object_class->get_property = tp_contact_factory_get_property;
    object_class->set_property = tp_contact_factory_set_property;

    g_object_class_install_property (object_class,
                     PROP_ACCOUNT,
                     g_param_spec_object ("account",
                                  "Factory's Account",
                                  "The account associated with the factory",
                                  MC_TYPE_ACCOUNT,
                                  G_PARAM_READWRITE |
                                  G_PARAM_CONSTRUCT_ONLY |
                                  G_PARAM_STATIC_STRINGS));
    g_object_class_install_property (object_class,
                     PROP_READY,
                     g_param_spec_boolean ("ready",
                                   "Whether the factory is ready",
                                   "TRUE once the factory is ready to be used",
                                   FALSE,
                                   G_PARAM_READABLE |
                                   G_PARAM_STATIC_STRINGS));
    g_object_class_install_property (object_class,
                     PROP_MIME_TYPES,
                     g_param_spec_boxed ("avatar-mime-types",
                                 "Supported MIME types for avatars",
                                 "Types of images that may be set as "
                                 "avatars on this connection.  Only valid "
                                 "once 'ready' becomes TRUE.",
                                 G_TYPE_STRV,
                                 G_PARAM_READABLE |
                                 G_PARAM_STATIC_STRINGS));
    g_object_class_install_property (object_class,
                     PROP_MIN_WIDTH,
                     g_param_spec_uint ("avatar-min-width",
                                "Minimum width for avatars",
                                "Minimum width of avatar that may be set. "
                                "Only valid once 'ready' becomes TRUE.",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READABLE |
                                G_PARAM_STATIC_STRINGS));
    g_object_class_install_property (object_class,
                     PROP_MIN_HEIGHT,
                     g_param_spec_uint ("avatar-min-height",
                                "Minimum height for avatars",
                                "Minimum height of avatar that may be set. "
                                "Only valid once 'ready' becomes TRUE.",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READABLE |
                                G_PARAM_STATIC_STRINGS));
    g_object_class_install_property (object_class,
                     PROP_MAX_WIDTH,
                     g_param_spec_uint ("avatar-max-width",
                                "Maximum width for avatars",
                                "Maximum width of avatar that may be set "
                                "or 0 if there is no maximum. "
                                "Only valid once 'ready' becomes TRUE.",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READABLE |
                                G_PARAM_STATIC_STRINGS));
    g_object_class_install_property (object_class,
                     PROP_MAX_HEIGHT,
                     g_param_spec_uint ("avatar-max-height",
                                "Maximum height for avatars",
                                "Maximum height of avatar that may be set "
                                "or 0 if there is no maximum. "
                                "Only valid once 'ready' becomes TRUE.",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READABLE |
                                G_PARAM_STATIC_STRINGS));
    g_object_class_install_property (object_class,
                     PROP_MAX_SIZE,
                     g_param_spec_uint ("avatar-max-size",
                                "Maximum size for avatars in bytes",
                                "Maximum file size of avatar that may be "
                                "set or 0 if there is no maximum. "
                                "Only valid once 'ready' becomes TRUE.",
                                0,
                                G_MAXUINT,
                                0,
                                G_PARAM_READABLE |
                                G_PARAM_STATIC_STRINGS));


    g_type_class_add_private (object_class, sizeof (EmpathyTpContactFactoryPriv));
}

static void
empathy_tp_contact_factory_init (EmpathyTpContactFactory *tp_factory)
{
    EmpathyTpContactFactoryPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (tp_factory,
        EMPATHY_TYPE_TP_CONTACT_FACTORY, EmpathyTpContactFactoryPriv);

    tp_factory->priv = priv;
    priv->account_manager = empathy_account_manager_dup_singleton ();

    g_signal_connect (priv->account_manager, "account-connection-changed",
              G_CALLBACK (tp_contact_factory_account_connection_cb),
              tp_factory);

    priv->can_request_ft = FALSE;
}

EmpathyTpContactFactory *
empathy_tp_contact_factory_new (McAccount *account)
{
    return g_object_new (EMPATHY_TYPE_TP_CONTACT_FACTORY,
                 "account", account,
                 NULL);
}