/****************************************************************************
 * apps/wireless/ieee802154/i8sak/i8sak_assoc.c
 * IEEE 802.15.4 Swiss Army Knife
 *
 *   Copyright (C) 2014-2015, 2017 Gregory Nutt. All rights reserved.
 *   Copyright (C) 2014-2015 Sebastien Lorquet. All rights reserved.
 *   Copyright (C) 2017 Verge Inc. All rights reserved.
 *
 *   Author: Sebastien Lorquet <sebastien@lorquet.fr>
 *   Author: Anthony Merlino <anthony@vergeaero.com>
 *   Author: Gregory Nuttx <gnutt@nuttx.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <nuttx/fs/ioctl.h>

#include "i8sak.h"

#include <nuttx/wireless/ieee802154/ieee802154_ioctl.h>
#include <nuttx/wireless/ieee802154/ieee802154_mac.h>
#include "wireless/ieee802154.h"

/****************************************************************************
 * Private Function Prototypes
 ****************************************************************************/

static void assoc_eventcb(FAR struct ieee802154_notif_s *notif, FAR void *arg);

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name : i8sak_assoc
 *
 * Description :
 *   Request association with the Coordinator
 ****************************************************************************/

void i8sak_assoc_cmd(FAR struct i8sak_s *i8sak, int argc, FAR char *argv[])
{
  struct ieee802154_assoc_req_s assocreq;
  struct wpanlistener_eventfilter_s filter;
  int fd, option, optcnt, ret;

  /* If the addresses has never been automatically or manually set before, set
   * it assuming that we are the default device address and the endpoint is the
   * default PAN Coordinator address.  This is actually the way the i8sak settings
   * are configured, so just set the flag if it's not already set.
   */
   
  if (!i8sak->addrset)
    {
      i8sak->addrset = true;
    }

  optcnt = 0;
  while ((option = getopt(argc, argv, ":hs:e:")) != ERROR)
    {
      optcnt++;
      switch (option)
        {
          case 'h':
            fprintf(stderr, "Requests association with endpoint\n"
                    "Usage: %s [-h]\n"
                    "    -h = this help menu\n"
                    , argv[0]);
            /* Must manually reset optind if we are going to exit early */

            optind = -1;
            return;
          case 's':
            /* Parse extended address and put it into the i8sak instance */

            i8sak->ep.saddr = i8sak_str2luint16(optarg);
            i8sak->ep.mode= IEEE802154_ADDRMODE_SHORT;
            break;
          case 'e':
            /* Parse extended address and put it into the i8sak instance */

            i8sak_str2eaddr(optarg, &i8sak->ep.eaddr[0]);
            i8sak->ep.mode = IEEE802154_ADDRMODE_EXTENDED;
            break;
          case ':':
            fprintf(stderr, "ERROR: missing argument\n");
            /* Must manually reset optind if we are going to exit early */

            optind = -1;
            i8sak_cmd_error(i8sak); /* This exits for us */
          case '?':
            fprintf(stderr, "ERROR: unknown argument\n");
            /* Must manually reset optind if we are going to exit early */

            optind = -1;
            i8sak_cmd_error(i8sak); /* This exits for us */
        }
    }
  
  /* If none of the option flags were used, and there is an argument included,
   * assume it is the PAN ID
   */

  if (optcnt && argc == 2)
    {
      i8sak->ep.panid = i8sak_str2luint16(argv[1]);
    }
  
  fd = open(i8sak->devname, O_RDWR);
  if (fd < 0)
    {
      printf("i8sak: cannot open %s, errno=%d\n", i8sak->devname, errno);
      i8sak_cmd_error(i8sak);
    }

  if (argc < 2)
    {
      /* TODO: Perform a scan operation here, to determine addressing information
       * of coordinator.
       */

      fprintf(stderr, "i8sak: scan not implemented. Using default values\n");
    }

  /* Register new callback for receiving the association notifications */

  memset(&filter, 0, sizeof(struct wpanlistener_eventfilter_s));
  filter.confevents.assoc = true;

  wpanlistener_add_eventreceiver(&i8sak->wpanlistener, assoc_eventcb, &filter,
                                 (FAR void *)i8sak, true);

  printf("i8sak: issuing ASSOC. request\n");

  assocreq.chnum = i8sak->chnum;
  assocreq.chpage = i8sak->chpage;

  memcpy(&assocreq.coordaddr, &i8sak->ep, sizeof(struct ieee802154_addr_s));

  assocreq.capabilities.devtype = 0;
  assocreq.capabilities.powersource = 1;
  assocreq.capabilities.rxonidle = 1;
  assocreq.capabilities.security = 0;
  assocreq.capabilities.allocaddr = 1;

  ieee802154_assoc_req(fd, &assocreq);

  close(fd);

  /* Wait here, the event listener will notify us if the correct event occurs */

  i8sak->assoc = true;

  ret = sem_wait(&i8sak->sigsem);
  sem_post(&i8sak->exclsem);
  if (ret != OK)
    {
      i8sak->assoc = false;
      printf("i8sak: test cancelled\n");
      i8sak_cmd_error(i8sak);
    }
}

/****************************************************************************
 * Private Functions
 ****************************************************************************/

static void assoc_eventcb(FAR struct ieee802154_notif_s *notif, FAR void *arg)
{
  FAR struct i8sak_s *i8sak = (FAR struct i8sak_s *)arg;

  if (notif->u.assocconf.status == IEEE802154_STATUS_SUCCESS)
    {
      printf("i8sak: ASSOC.request succeeded\n");
    }
  else
    {
      printf("i8sak: ASSOC.request failed: %s\n", 
             IEEE802154_STATUS_STRING[notif->u.assocconf.status]);
    }

  if (i8sak->assoc)
    {
      sem_post(&i8sak->sigsem);
      i8sak->assoc = false;
    }
}