/*
   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 src/backenddb/get_otp_device.c
 * @brief Implementation of the get_otp_device function for Postgres
 * @author Christian Grothoff
 */
#include "platform.h"
#include <taler/taler_pq_lib.h>
#include "merchant-database/get_otp_device.h"
#include "helper.h"


enum GNUNET_DB_QueryStatus
TALER_MERCHANTDB_get_otp_device (
  struct TALER_MERCHANTDB_PostgresContext *pg,
  const char *instance_id,
  const char *otp_id,
  struct TALER_MERCHANTDB_OtpDeviceDetails *td)
{
  struct GNUNET_PQ_QueryParam params[] = {
    GNUNET_PQ_query_param_string (otp_id),
    GNUNET_PQ_query_param_end
  };
  uint32_t pos32 = TALER_MCA_NONE;
  struct GNUNET_PQ_ResultSpec rs[] = {
    GNUNET_PQ_result_spec_string ("otp_description",
                                  &td->otp_description),
    GNUNET_PQ_result_spec_uint64 ("otp_ctr",
                                  &td->otp_ctr),
    GNUNET_PQ_result_spec_string ("otp_key",
                                  &td->otp_key),
    GNUNET_PQ_result_spec_uint32 ("otp_algorithm",
                                  &pos32),
    GNUNET_PQ_result_spec_end
  };
  enum GNUNET_DB_QueryStatus qs;

  GNUNET_assert (NULL != pg->current_merchant_id);
  GNUNET_assert (0 == strcmp (instance_id,
                              pg->current_merchant_id));
  TMH_PQ_prepare_anon (pg,
                       "SELECT"
                       " otp_description"
                       ",otp_ctr"
                       ",otp_key"
                       ",otp_algorithm"
                       " FROM merchant_otp_devices"
                       " WHERE otp_id=$1");
  qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
                                                 "",
                                                 params,
                                                 rs);
  td->otp_algorithm = (enum TALER_MerchantConfirmationAlgorithm) pos32;
  return qs;
}
