/*
 if (NULL == (perf_ats = GNUNET_ATS_performance_init (cfg, &ats_perf_cb, NULL)))
 {
 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 "Failed to connect to performance API\n");
 GNUNET_SCHEDULER_add_now (end_badly, NULL);
 }
 This file is part of GNUnet.
 (C) 2010-2013 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 ats/test_ats_solver_preferences.c
 * @brief solver test: preference client handling
 * @author Christian Grothoff
 * @author Matthias Wachs
 */
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_testbed_service.h"
#include "gnunet_ats_service.h"
#include "test_ats_api_common.h"

/**
 * Timeout task
 */
static GNUNET_SCHEDULER_TaskIdentifier die_task;

/**
 * Statistics handle
 */
struct GNUNET_STATISTICS_Handle *stats;

/**
 * Scheduling handle
 */
static struct GNUNET_ATS_SchedulingHandle *sched_ats;

/**
 * Scheduling handle
 */
static struct GNUNET_ATS_PerformanceHandle *perf_ats;

/**
 * Return value
 */
static int ret;

/**
 * Test address
 */
static struct Test_Address test_addr;

/**
 * Test peer
 */
static struct PeerContext p;

/**
 * HELLO address
 */
struct GNUNET_HELLO_Address test_hello_address;

/**
 * Session
 */
static void *test_session;

/**
 * Test ats info
 */
struct GNUNET_ATS_Information test_ats_info[3];

/**
 * Test ats count
 */
uint32_t test_ats_count;

static int
stat_cb (void *cls, const char *subsystem, const char *name, uint64_t value,
    int is_persistent);

static void
end (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Done!\n");

  if (die_task != GNUNET_SCHEDULER_NO_TASK )
  {
    GNUNET_SCHEDULER_cancel (die_task);
    die_task = GNUNET_SCHEDULER_NO_TASK;
  }

  if (NULL != sched_ats)
  {
    GNUNET_ATS_scheduling_done (sched_ats);
    sched_ats = NULL;
  }

  if (NULL != perf_ats)
  {
    GNUNET_ATS_performance_done (perf_ats);
    perf_ats = NULL;
  }

  GNUNET_STATISTICS_watch_cancel (stats, "ats", "# active performance clients", &stat_cb, NULL );
  if (NULL != stats)
  {
    GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
    stats = NULL;
  }

  free_test_address (&test_addr);

  ret = 0;
}

static void
end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  die_task = GNUNET_SCHEDULER_NO_TASK;
  end (NULL, NULL );
  ret = GNUNET_SYSERR;
}


static void
perf_info_cb (void *cls,
    const struct GNUNET_HELLO_Address *address, int address_active,
    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
    const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
{
  if (NULL == address)
    return;

  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "ATS performance info: `%s'\n",
      GNUNET_i2s (&address->peer));
}

static void
address_suggest_cb (void *cls,
                    const struct GNUNET_PeerIdentity *peer,
                    const struct GNUNET_HELLO_Address *address,
                    struct Session *session,
                    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
                    struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
                    const struct GNUNET_ATS_Information *atsi,
                    uint32_t ats_count)
{
  int c;
  double pref_val;
  if (NULL == perf_ats)
    return;
  for (c = 1; c < GNUNET_ATS_PreferenceCount; c++)
  {
    pref_val = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 10);
    GNUNET_ATS_performance_change_preference (perf_ats,
        &test_hello_address.peer, GNUNET_ATS_PREFERENCE_LATENCY, pref_val,
        GNUNET_ATS_PREFERENCE_END);
  }
}

static int
stat_cb (void *cls, const char *subsystem, const char *name, uint64_t value,
    int is_persistent)
{
  static int last_value = 0;
  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "ATS statistics: `%s' `%s' %llu\n",
      subsystem, name, value);

  if ((0 == last_value) && (1 == value))
  {
    if (perf_ats != NULL)
    {
      GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Disconnecting performance client\n");
      GNUNET_ATS_performance_done(perf_ats);
      perf_ats = NULL;
    }
  }
  if ((1 == last_value) && (0 == value))
  {
    GNUNET_SCHEDULER_add_now (&end, NULL);
  }
  last_value = value;

  return GNUNET_OK;
}

static void
run (void *cls, const struct GNUNET_CONFIGURATION_Handle *mycfg,
    struct GNUNET_TESTING_Peer *peer)
{

  die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, NULL );
  stats = GNUNET_STATISTICS_create ("ats", mycfg);
  GNUNET_STATISTICS_watch (stats, "ats", "# active performance clients", &stat_cb, NULL );

  /* Connect to ATS scheduling */
  sched_ats = GNUNET_ATS_scheduling_init (mycfg, &address_suggest_cb, NULL );
  if (sched_ats == NULL )
  {
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
        "Could not connect to ATS scheduling!\n");
    GNUNET_SCHEDULER_add_now (&end_badly, NULL );
    return;
  }

  perf_ats = GNUNET_ATS_performance_init (mycfg, &perf_info_cb, NULL );
  if (perf_ats == NULL )
  {
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
        "Could not connect to ATS performance!\n");
    GNUNET_SCHEDULER_add_now (&end_badly, NULL );
    return;
  }

  /* Set up peer */
  memset (&p.id, '1', sizeof(p.id));

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Created peer `%s'\n",
      GNUNET_i2s_full (&p.id));

  /* Prepare ATS Information */
  test_ats_info[0].type = htonl (GNUNET_ATS_NETWORK_TYPE);
  test_ats_info[0].value = htonl (GNUNET_ATS_NET_WAN);
  test_ats_info[1].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
  test_ats_info[1].value = htonl (1);
  test_ats_info[2].type = htonl (GNUNET_ATS_QUALITY_NET_DELAY);
  test_ats_info[2].value = htonl (100);
  test_ats_count = 3;

  /* Adding address without session */
  test_session = NULL;
  create_test_address (&test_addr, "test", test_session, "test",
      strlen ("test") + 1);
  test_hello_address.peer = p.id;
  test_hello_address.transport_name = test_addr.plugin;
  test_hello_address.address = test_addr.addr;
  test_hello_address.address_length = test_addr.addr_len;

  /* Adding address */
  GNUNET_ATS_address_add (sched_ats, &test_hello_address, test_session,
      test_ats_info, test_ats_count);
  GNUNET_ATS_suggest_address(sched_ats, &test_hello_address.peer, NULL, NULL);
}

int
main (int argc, char *argv[])
{
  char *sep;
  char *src_filename = GNUNET_strdup (__FILE__);
  char *test_filename = GNUNET_strdup (argv[0]);
  char *config_file;
  char *solver;

  ret = 0;

  if (NULL == (sep = (strstr (src_filename, ".c"))))
  {
    GNUNET_break(0);
    return -1;
  }
  sep[0] = '\0';

  if (NULL != (sep = strstr (test_filename, ".exe")))
    sep[0] = '\0';

  if (NULL == (solver = strstr (test_filename, src_filename)))
  {
    GNUNET_break(0);
    return -1;
  }
  solver += strlen (src_filename) + 1;

  if (0 == strcmp (solver, "proportional"))
  {
    config_file = "test_ats_solver_proportional.conf";
  }
  else if (0 == strcmp (solver, "mlp"))
  {
    config_file = "test_ats_solver_mlp.conf";
  }
  else if ((0 == strcmp (solver, "ril")))
  {
    config_file = "test_ats_solver_ril.conf";
  }
  else
  {
    GNUNET_break(0);
    GNUNET_free(src_filename);
    GNUNET_free(test_filename);
    return 1;
  }

  GNUNET_free(src_filename);
  GNUNET_free(test_filename);

  if (0
      != GNUNET_TESTING_peer_run ("test-ats-solver", config_file, &run, NULL ))
    return GNUNET_SYSERR;

  return ret;
}

/* end of file test_ats_solver_preferences.c */