/*
 *
 * (C) 2017-26 - ntop.org
 *
 *
 * This program 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 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 */

#include "ntop_includes.h"

/* ***************************************** */

HostPoolStats::HostPoolStats(NetworkInterface* iface)
    : GenericTrafficElement() {
  if (trace_new_delete)
    ntop->getTrace()->traceEvent(TRACE_NORMAL, "[new] %s", __FILE__);

  ndpiStats = new (std::nothrow) nDPIStats();
  totalStats = new (std::nothrow) nDPIStats();
  mustReset = false;

  if (iface && iface->getTimeLastPktRcvd() > 0)
    first_seen = last_seen = iface->getTimeLastPktRcvd();
  else
    first_seen = last_seen = time(NULL);
};

/* ***************************************** */

void HostPoolStats::updateSeen(time_t _last_seen) {
  last_seen = _last_seen;

  if ((first_seen == 0) || (first_seen > last_seen)) first_seen = last_seen;
}

/* ***************************************** */

void HostPoolStats::updateName(const char* _pool_name) {
  pool_name.assign(_pool_name ? _pool_name : "");
}

/* ***************************************** */

void HostPoolStats::lua(lua_State* vm, NetworkInterface* iface) {
  u_int64_t bytes = 0;
  u_int32_t duration = 0;

  lua_newtable(vm);

  GenericTrafficElement::lua(vm, true);
  lua_push_uint64_table_entry(vm, "seen.first", first_seen);
  lua_push_uint64_table_entry(vm, "seen.last", last_seen);
  if (ndpiStats) ndpiStats->lua(iface, vm, true /* with categories */);

  if (totalStats) {
    getStats(&bytes, &duration);

    lua_newtable(vm);

    lua_push_uint64_table_entry(vm, "bytes", bytes);
    lua_push_uint64_table_entry(vm, "duration", duration);

    lua_pushstring(vm, (char*)"cross_application");
    lua_insert(vm, -2);
    lua_settable(vm, -3);
  }
}

/* ***************************************** */

json_object* HostPoolStats::getJSONObject(NetworkInterface* iface) {
  json_object* my_object;

  if ((my_object = json_object_new_object()) == NULL) return (NULL);

  json_object_object_add(my_object, "sent", sent.getJSONObject());
  json_object_object_add(my_object, "rcvd", rcvd.getJSONObject());
  if (ndpiStats)
    json_object_object_add(my_object, "ndpi", ndpiStats->getJSONObject(iface));
  if (totalStats)
    json_object_object_add(my_object, "totals",
                           totalStats->getJSONObject(iface));
  return my_object;
}

/* ***************************************** */

char* HostPoolStats::serialize(NetworkInterface* iface) {
  json_object* my_object = getJSONObject(iface);

  if (!my_object) return NULL;

  char* rsp = strdup(json_object_to_json_string(my_object));

  /* Free memory */
  json_object_put(my_object);

  return (rsp);
}

/* ***************************************** */

bool HostPoolStats::deserialize(char* json, NetworkInterface* iface) {
  json_object *o, *obj;
  enum json_tokener_error jerr = json_tokener_success;

  if (!json) return (false);

  if ((o = json_tokener_parse_verbose(json, &jerr)) == NULL) return (false);

  cleanup();

  if (json_object_object_get_ex(o, "sent", &obj)) {
    sent.deserialize(obj);
    ;
  }

  if (json_object_object_get_ex(o, "rcvd", &obj)) {
    rcvd.deserialize(obj);
  }

  if (json_object_object_get_ex(o, "ndpi", &obj)) {
    if (!ndpiStats) ndpiStats = new (std::nothrow) nDPIStats();
    if (ndpiStats) ndpiStats->deserialize(obj, iface);
  }

  if (json_object_object_get_ex(o, "totals", &obj)) {
    if (!totalStats) totalStats = new (std::nothrow) nDPIStats();
    if (totalStats) totalStats->deserialize(obj, iface);
  }

  json_object_put(o);
  return (true);
}

/* ***************************************** */

void HostPoolStats::cleanup() {
  if (ndpiStats) {
    delete ndpiStats;
    ndpiStats = NULL;
  }

  if (totalStats) {
    delete totalStats;
    totalStats = NULL;
  }

  sent.resetStats();
  rcvd.resetStats();

  pool_name.clear();
  mustReset = false;
  first_seen = last_seen = 0;
}