/*
   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/get_signkey_revocation.c
 * @brief Implementation of the get_signkey_revocation function for Postgres
 * @author Christian Grothoff
 */
#include "taler/taler_pq_lib.h"
#include "exchange-database/get_signkey_revocation.h"
#include "helper.h"


enum GNUNET_DB_QueryStatus
TALER_EXCHANGEDB_get_signkey_revocation (
  struct TALER_EXCHANGEDB_PostgresContext *pg,
  const struct TALER_ExchangePublicKeyP *exchange_pub,
  struct TALER_MasterSignatureP *master_sig)
{
  struct GNUNET_PQ_QueryParam params[] = {
    GNUNET_PQ_query_param_auto_from_type (exchange_pub),
    GNUNET_PQ_query_param_end
  };
  struct GNUNET_PQ_ResultSpec rs[] = {
    GNUNET_PQ_result_spec_auto_from_type ("master_sig",
                                          master_sig),
    GNUNET_PQ_result_spec_end
  };

  PREPARE (pg,
           "get_signkey_revocation",
           "SELECT "
           " master_sig"
           " FROM signkey_revocations"
           " WHERE esk_serial="
           "   (SELECT esk_serial"
           "      FROM exchange_sign_keys"
           "     WHERE exchange_pub=$1);");
  return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
                                                   "get_signkey_revocation",
                                                   params,
                                                   rs);
}
