/*

 *

 * (C) 2013-26 - 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.

 *

 */

#ifndef _STATS_MANAGER_H_

#define _STATS_MANAGER_H_

#include "ntop_includes.h"

struct statsManagerRetrieval {

  vector<string> rows;

  int num_vals;

  statsManagerRetrieval() : num_vals(0) {}

};

class StatsManager : protected SQLiteStoreManager {

 public:

  StatsManager(NetworkInterface* iface);

  ~StatsManager() {};

  int insertMinuteSampling(time_t epoch, const char* sampling);

  int insertHourSampling(time_t epoch, const char* sampling);

  int insertDaySampling(time_t epoch, const char* sampling);

  int getMinuteSampling(time_t epoch, string* sampling);

  int openStore(const char* cache_name);

  int retrieveMinuteStatsInterval(time_t epoch_start, time_t epoch_end,

                                  struct statsManagerRetrieval* retvals);

  int retrieveHourStatsInterval(time_t epoch_start, time_t epoch_end,

                                struct statsManagerRetrieval* retvals);

  int retrieveDayStatsInterval(time_t epoch_start, time_t epoch_end,

                               struct statsManagerRetrieval* retvals);

  int deleteMinuteStatsOlderThan(unsigned num_days);

  int deleteHourStatsOlderThan(unsigned num_days);

  int deleteDayStatsOlderThan(unsigned num_days);

 private:

  const char *MINUTE_CACHE_NAME, *HOUR_CACHE_NAME,

      *DAY_CACHE_NAME;  // see constructor for initialization

  /*

   * map has O(log(n)) access time, but we suppose the number

   * of caches is not huge

   */

  std::map<string, bool> caches;

  int insertSampling(const char* sampling, const char* cache_name,

                     long int key);

  int getSampling(string* sampling, const char* cache_name, time_t key_low,

                  time_t key_high);

  int deleteStatsOlderThan(const char* cache_name, const time_t key);

  int retrieveStatsInterval(struct statsManagerRetrieval* retvals,

                            const char* cache_name, const time_t key_start,

                            const time_t key_end);

};

#endif /* _STATS_MANAGER_H_ */