/*
   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/include/exchange-database/iterate_denomination_info.h
 * @brief implementation of the iterate_denomination_info function for Postgres
 * @author Christian Grothoff
 */
#ifndef EXCHANGE_DATABASE_ITERATE_DENOMINATION_INFO_H
#define EXCHANGE_DATABASE_ITERATE_DENOMINATION_INFO_H

#include "taler/taler_json_lib.h"
#include "exchangedb_lib.h"


/**
 * Function called with information about the exchange's denomination keys.
 * Note that the 'master' field in @a issue will not yet be initialized when
 * this function is called!
 *
 * @param cls closure
 * @param denom_serial table row of the denomination
 * @param denom_pub public key of the denomination
 * @param issue detailed information about the denomination (value, expiration times, fees);
 */
#ifndef TALER_EXCHANGEDB_DENOMINATION_RESULT_CLOSURE
/**
 * Type of the closure for #TALER_EXCHANGEDB_DenominationCallback.
 */
#define TALER_EXCHANGEDB_DENOMINATION_RESULT_CLOSURE void
#endif
typedef void
(*TALER_EXCHANGEDB_DenominationCallback)(
  TALER_EXCHANGEDB_DENOMINATION_RESULT_CLOSURE *cls,
  uint64_t denom_serial,
  const struct TALER_DenominationPublicKey *denom_pub,
  const struct TALER_EXCHANGEDB_DenominationKeyInformation *issue);


/* Callback typedefs */
/**
 * Function called with information about the exchange's denomination keys.
 * Note that the 'master' field in @a issue will not yet be initialized when
 * this function is called!
 *
 * @param cls closure
 * @param denom_serial table row of the denomination
 * @param denom_pub public key of the denomination
 * @param issue detailed information about the denomination (value, expiration times, fees);
 */
typedef void
(*TALER_EXCHANGEDB_DenominationCallback)(
  TALER_EXCHANGEDB_DENOMINATION_RESULT_CLOSURE *cls,
  uint64_t denom_serial,
  const struct TALER_DenominationPublicKey *denom_pub,
  const struct TALER_EXCHANGEDB_DenominationKeyInformation *issue);

/**
 * Fetch information about all known denomination keys.
 *
 * @param pg the database context
 * @param cb function to call on each denomination key
 * @param cb_cls closure for @a cb
 * @return transaction status code
 */
enum GNUNET_DB_QueryStatus
TALER_EXCHANGEDB_iterate_denomination_info (struct
                                            TALER_EXCHANGEDB_PostgresContext *pg
                                            ,
                                            TALER_EXCHANGEDB_DenominationCallback
                                            cb,
                                            TALER_EXCHANGEDB_DENOMINATION_RESULT_CLOSURE
                                            *cb_cls);

#endif
