/* GLib testing framework examples and tests
 *
 * Copyright (C) 2012 Red Hat Inc.
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 *
 * 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, see <http://www.gnu.org/licenses/>.
 *
 * Author: Stef Walter <stefw@gnome.org>
 */

#include "config.h"

#include <gio/gio.h>

#include <sys/socket.h>

#include <errno.h>
#include <string.h>
#include <unistd.h>

typedef struct {
  GDBusInterfaceSkeleton parent;
  gint number;
} MockInterface;

typedef struct {
  GDBusInterfaceSkeletonClass parent_class;
} MockInterfaceClass;

static GType mock_interface_get_type (void);
G_DEFINE_TYPE (MockInterface, mock_interface, G_TYPE_DBUS_INTERFACE_SKELETON)

static void
mock_interface_init (MockInterface *self)
{

}

static GDBusInterfaceInfo *
mock_interface_get_info (GDBusInterfaceSkeleton *skeleton)
{
  static GDBusPropertyInfo path_info = {
    -1,
    "Path",
    "o",
    G_DBUS_PROPERTY_INFO_FLAGS_READABLE,
    NULL,
  };

  static GDBusPropertyInfo number_info = {
    -1,
    "Number",
    "i",
    G_DBUS_PROPERTY_INFO_FLAGS_READABLE,
    NULL,
  };

  static GDBusPropertyInfo *property_info[] = {
    &path_info,
    &number_info,
    NULL
  };

  static GDBusInterfaceInfo interface_info = {
    -1,
    (gchar *) "org.mock.Interface",
    NULL,
    NULL,
    (GDBusPropertyInfo **) &property_info,
    NULL
  };

  return &interface_info;
}

static GVariant *
mock_interface_get_property (GDBusConnection *connection,
                             const gchar *sender,
                             const gchar *object_path,
                             const gchar *interface_name,
                             const gchar *property_name,
                             GError **error,
                             gpointer user_data)
{
  MockInterface *self = user_data;
  if (g_str_equal (property_name, "Path"))
    return g_variant_new_object_path (object_path);
  else if (g_str_equal (property_name, "Number"))
    return g_variant_new_int32 (self->number);
  else
    return NULL;
}

static GDBusInterfaceVTable *
mock_interface_get_vtable (GDBusInterfaceSkeleton *interface)
{
  static GDBusInterfaceVTable vtable = {
    NULL,
    mock_interface_get_property,
    NULL,
    { 0 }
  };

  return &vtable;
}

static GVariant *
mock_interface_get_properties (GDBusInterfaceSkeleton *interface)
{
  GVariantBuilder builder;
  GDBusInterfaceInfo *info;
  GDBusInterfaceVTable *vtable;
  guint n;

  /* Groan, this is completely generic code and should be in gdbus */

  info = g_dbus_interface_skeleton_get_info (interface);
  vtable = g_dbus_interface_skeleton_get_vtable (interface);

  g_variant_builder_init_static (&builder, G_VARIANT_TYPE ("a{sv}"));
  for (n = 0; info->properties[n] != NULL; n++)
    {
      if (info->properties[n]->flags & G_DBUS_PROPERTY_INFO_FLAGS_READABLE)
        {
          GVariant *value;
          g_return_val_if_fail (vtable->get_property != NULL, NULL);
          value = (vtable->get_property) (g_dbus_interface_skeleton_get_connection (interface), NULL,
                                          g_dbus_interface_skeleton_get_object_path (interface),
                                          info->name, info->properties[n]->name,
                                          NULL, interface);
          if (value != NULL)
            {
              g_variant_take_ref (value);
              g_variant_builder_add (&builder, "{sv}", info->properties[n]->name, value);
              g_variant_unref (value);
            }
        }
    }

  return g_variant_builder_end (&builder);
}

static void
mock_interface_flush (GDBusInterfaceSkeleton *skeleton)
{

}

static void
mock_interface_class_init (MockInterfaceClass *klass)
{
  GDBusInterfaceSkeletonClass *skeleton_class = G_DBUS_INTERFACE_SKELETON_CLASS (klass);
  skeleton_class->get_info = mock_interface_get_info;
  skeleton_class->get_properties = mock_interface_get_properties;
  skeleton_class->flush = mock_interface_flush;
  skeleton_class->get_vtable = mock_interface_get_vtable;
}
typedef struct {
  GDBusConnection *server;
  GDBusConnection *client;
  GMainLoop *loop;
  GAsyncResult *result;
} Test;

static void
on_server_connection (GObject *source,
                      GAsyncResult *result,
                      gpointer user_data)
{
  Test *test = user_data;
  GError *error = NULL;

  g_assert_null (test->server);
  test->server = g_dbus_connection_new_finish (result, &error);
  g_assert_no_error (error);
  g_assert_nonnull (test->server);

  if (test->server && test->client)
    g_main_loop_quit (test->loop);
}

static void
on_client_connection (GObject *source,
                      GAsyncResult *result,
                      gpointer user_data)
{
  Test *test = user_data;
  GError *error = NULL;

  g_assert_null (test->client);
  test->client = g_dbus_connection_new_finish (result, &error);
  g_assert_no_error (error);
  g_assert_nonnull (test->client);

  if (test->server && test->client)
    g_main_loop_quit (test->loop);
}

static void
setup (Test *test,
       gconstpointer unused)
{
  GError *error = NULL;
  GSocket *socket;
  GSocketConnection *stream;
  gchar *guid;
  int pair[2];

  test->loop = g_main_loop_new (NULL, FALSE);

  if (socketpair (AF_UNIX, SOCK_STREAM, 0, pair) < 0)
    {
      int errsv = errno;
      g_set_error (&error, G_IO_ERROR, g_io_error_from_errno (errsv),
                   "%s", g_strerror (errsv));
      g_assert_no_error (error);
    }

  /* Build up the server stuff */
  socket = g_socket_new_from_fd (pair[1], &error);
  g_assert_no_error (error);

  stream = g_socket_connection_factory_create_connection (socket);
  g_assert_nonnull (stream);
  g_object_unref (socket);

  guid = g_dbus_generate_guid ();
  g_dbus_connection_new (G_IO_STREAM (stream), guid,
                         G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER |
                         G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_ALLOW_ANONYMOUS,
                         NULL, NULL, on_server_connection, test);
  g_object_unref (stream);
  g_free (guid);

  /* Build up the client stuff */
  socket = g_socket_new_from_fd (pair[0], &error);
  g_assert_no_error (error);

  stream = g_socket_connection_factory_create_connection (socket);
  g_assert_nonnull (stream);
  g_object_unref (socket);

  g_dbus_connection_new (G_IO_STREAM (stream), NULL,
                         G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT |
                         G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_ALLOW_ANONYMOUS,
                         NULL, NULL, on_client_connection, test);

  g_main_loop_run (test->loop);

  g_assert_nonnull (test->server);
  g_assert_nonnull (test->client);

  g_object_unref (stream);
}

static void
teardown (Test *test,
          gconstpointer unused)
{
  g_clear_object (&test->client);
  g_clear_object (&test->server);
  g_main_loop_unref (test->loop);
}

static void
on_result (GObject *source,
           GAsyncResult *result,
           gpointer user_data)
{
  Test *test = user_data;
  g_assert_null (test->result);
  test->result = g_object_ref (result);
  g_main_loop_quit (test->loop);

}

static void
test_object_manager (Test *test,
                     gconstpointer test_data)
{
  GDBusObjectManager *client;
  GDBusObjectManagerServer *server;
  MockInterface *mock;
  GDBusObjectSkeleton *skeleton;
  const gchar *dbus_name;
  GError *error = NULL;
  GDBusInterface *proxy;
  GVariant *prop;
  const gchar *object_path = test_data;
  gchar *number1_path = NULL, *number2_path = NULL;

  if (g_strcmp0 (object_path, "/") == 0)
    {
      number1_path = g_strdup ("/number_1");
      number2_path = g_strdup ("/number_2");
    }
  else
    {
      number1_path = g_strdup_printf ("%s/number_1", object_path);
      number2_path = g_strdup_printf ("%s/number_2", object_path);
    }

  server = g_dbus_object_manager_server_new (object_path);

  mock = g_object_new (mock_interface_get_type (), NULL);
  mock->number = 1;
  skeleton = g_dbus_object_skeleton_new (number1_path);
  g_dbus_object_skeleton_add_interface (skeleton, G_DBUS_INTERFACE_SKELETON (mock));
  g_dbus_object_manager_server_export (server, skeleton);

  mock = g_object_new (mock_interface_get_type (), NULL);
  mock->number = 2;
  skeleton = g_dbus_object_skeleton_new (number2_path);
  g_dbus_object_skeleton_add_interface (skeleton, G_DBUS_INTERFACE_SKELETON (mock));
  g_dbus_object_manager_server_export (server, skeleton);

  g_dbus_object_manager_server_set_connection (server, test->server);

  dbus_name = NULL;

  g_dbus_object_manager_client_new (test->client, G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_DO_NOT_AUTO_START,
                                    dbus_name, object_path, NULL, NULL, NULL, NULL, on_result, test);

  g_main_loop_run (test->loop);
  client = g_dbus_object_manager_client_new_finish (test->result, &error);
  g_assert_no_error (error);
  g_clear_object (&test->result);

  proxy = g_dbus_object_manager_get_interface (client, number1_path, "org.mock.Interface");
  g_assert_nonnull (proxy);
  prop = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "Path");
  g_assert_nonnull (prop);
  g_assert_cmpstr ((gchar *)g_variant_get_type (prop), ==, (gchar *)G_VARIANT_TYPE_OBJECT_PATH);
  g_assert_cmpstr (g_variant_get_string (prop, NULL), ==, number1_path);
  g_variant_unref (prop);
  prop = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "Number");
  g_assert_nonnull (prop);
  g_assert_cmpstr ((gchar *)g_variant_get_type (prop), ==, (gchar *)G_VARIANT_TYPE_INT32);
  g_assert_cmpint (g_variant_get_int32 (prop), ==, 1);
  g_variant_unref (prop);
  g_object_unref (proxy);

  proxy = g_dbus_object_manager_get_interface (client, number2_path, "org.mock.Interface");
  g_assert_nonnull (proxy);
  prop = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "Path");
  g_assert_nonnull (prop);
  g_assert_cmpstr ((gchar *)g_variant_get_type (prop), ==, (gchar *)G_VARIANT_TYPE_OBJECT_PATH);
  g_assert_cmpstr (g_variant_get_string (prop, NULL), ==, number2_path);
  g_variant_unref (prop);
  prop = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (proxy), "Number");
  g_assert_nonnull (prop);
  g_assert_cmpstr ((gchar *)g_variant_get_type (prop), ==, (gchar *)G_VARIANT_TYPE_INT32);
  g_assert_cmpint (g_variant_get_int32 (prop), ==, 2);
  g_variant_unref (prop);
  g_object_unref (proxy);

  g_object_unref (server);
  g_object_unref (client);

  g_free (number2_path);
  g_free (number1_path);
}

int
main (int   argc,
      char *argv[])
{
  g_test_init (&argc, &argv, G_TEST_OPTION_ISOLATE_DIRS, NULL);

  g_test_add ("/gdbus/peer-object-manager/normal", Test, "/objects",
              setup, test_object_manager, teardown);
  g_test_add ("/gdbus/peer-object-manager/root", Test, "/",
              setup, test_object_manager, teardown);

  return g_test_run();
}
