/*
   This file is part of TALER
   Copyright (C) 2022 Taler Systems SA

   TALER 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.

   TALER 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
   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */
/**
 * @file exchangedb/gc.c
 * @brief Implementation of the gc function for Postgres
 * @author Christian Grothoff
 */
#include "taler/taler_pq_lib.h"
#include "exchange-database/gc.h"
#include "helper.h"


enum GNUNET_GenericReturnValue
TALER_EXCHANGEDB_gc (struct TALER_EXCHANGEDB_PostgresContext *pg)
{
  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
  struct GNUNET_TIME_Absolute long_ago;
  struct GNUNET_PQ_QueryParam params[] = {
    GNUNET_PQ_query_param_absolute_time (&long_ago),
    GNUNET_PQ_query_param_absolute_time (&now),
    GNUNET_PQ_query_param_end
  };

  /* Keep wire fees for 10 years, that should always
     be enough _and_ they are tiny so it does not
     matter to make this tight */
  long_ago = GNUNET_TIME_absolute_subtract (
    now,
    GNUNET_TIME_relative_multiply (
      GNUNET_TIME_UNIT_YEARS,
      10));
  if (GNUNET_OK !=
      GNUNET_PQ_prepare_anon (pg->conn,
                              "CALL exchange_do_gc($1,$2);"))
  {
    GNUNET_break (0);
    return GNUNET_SYSERR;
  }
  if (0 >
      GNUNET_PQ_eval_prepared_non_select (pg->conn,
                                          "",
                                          params))
  {
    GNUNET_break (0);
    return GNUNET_SYSERR;
  }
  return GNUNET_OK;
}
