/*
     This file is part of GNUnet.
     (C) 2012 Christian Grothoff (and other contributing authors)

     GNUnet is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published
     by the Free Software Foundation; either version 3, or (at your
     option) any later version.

     GNUnet is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     General Public License for more details.

     You should have received a copy of the GNU General Public License
     along with GNUnet; see the file COPYING.  If not, write to the
     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
*/

/**
 * @file set/test_set_api.c
 * @brief testcase for consensus_api.c
 */
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_testing_lib.h"
#include "gnunet_set_service.h"


static struct GNUNET_PeerIdentity local_id;
static struct GNUNET_HashCode app_id;
static struct GNUNET_SET_Handle *set1;
static struct GNUNET_SET_Handle *set2;
static struct GNUNET_SET_ListenHandle *listen_handle;
const static struct GNUNET_CONFIGURATION_Handle *config;


static void
result_cb_set1 (void *cls, struct GNUNET_SET_Element *element,
           enum GNUNET_SET_Status status)
{
  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "got result (set 1)\n");
}


static void
result_cb_set2 (void *cls, struct GNUNET_SET_Element *element,
           enum GNUNET_SET_Status status)
{
  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "got result (set 2)\n");
}


static void
listen_cb (void *cls,
           const struct GNUNET_PeerIdentity *other_peer,
           const struct GNUNET_MessageHeader *context_msg,
           struct GNUNET_SET_Request *request)
{
  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "listen cb called\n");
  GNUNET_SET_accept (request, set2, GNUNET_TIME_UNIT_FOREVER_REL, 
                     GNUNET_SET_RESULT_ADDED, result_cb_set2, NULL);
}


/**
 * Start the set operation.
 *
 * @param cls closure, unused
 */
static void
start (void *cls)
{
  listen_handle = GNUNET_SET_listen (config, GNUNET_SET_OPERATION_UNION,
                                     &app_id, listen_cb, NULL);
  GNUNET_SET_evaluate (set1, &local_id, &app_id, NULL, 42,
                       GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_SET_RESULT_ADDED,
                       result_cb_set1, NULL);
}


/**
 * Initialize the second set, continue
 *
 * @param cls closure, unused
 */
static void
init_set2 (void *cls)
{
  struct GNUNET_SET_Element element;


  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "initializing set 2\n");

  element.data = "hello";
  element.size = strlen(element.data);
  GNUNET_SET_add_element (set2, &element, NULL, NULL);
  element.data = "quux";
  element.size = strlen(element.data);
  GNUNET_SET_add_element (set2, &element, start, NULL);
}


/**
 * Initialize the first set, continue.
 */
static void
init_set1 (void)
{
  struct GNUNET_SET_Element element;

  element.data = "hello";
  element.size = strlen(element.data);
  GNUNET_SET_add_element (set1, &element, NULL, NULL);
  element.data = "bar";
  element.size = strlen(element.data);
  GNUNET_SET_add_element (set1, &element, init_set2, NULL);

  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "initialized set 1\n");
}


/**
 * Signature of the 'main' function for a (single-peer) testcase that
 * is run using 'GNUNET_TESTING_peer_run'.
 * 
 * @param cls closure
 * @param cfg configuration of the peer that was started
 * @param peer identity of the peer that was created
 */
static void
run (void *cls,
     const struct GNUNET_CONFIGURATION_Handle *cfg,
     struct GNUNET_TESTING_Peer *peer)
{

  static const char* app_str = "gnunet-set";

  config = cfg;
  GNUNET_CRYPTO_hash (app_str, strlen (app_str), &app_id);
  GNUNET_CRYPTO_get_host_identity (cfg, &local_id);
  set1 = GNUNET_SET_create (cfg, GNUNET_SET_OPERATION_UNION);
  set2 = GNUNET_SET_create (cfg, GNUNET_SET_OPERATION_UNION);
  init_set1 ();
}

int
main (int argc, char **argv)
{
  int ret;

  ret = GNUNET_TESTING_peer_run ("test_set_api",
                                 "test_set.conf",
                                 &run, NULL);
  return ret;
}