/*
   This file is part of TALER
   Copyright (C) 2026 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_aml_staff_above_serial_id.h
 * @brief implementation of the iterate_aml_staff_above_serial_id function for Postgres
 * @author Christian Grothoff
 */
#ifndef EXCHANGE_DATABASE_ITERATE_AML_STAFF_ABOVE_SERIAL_ID_H
#define EXCHANGE_DATABASE_ITERATE_AML_STAFF_ABOVE_SERIAL_ID_H

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


#ifndef TALER_EXCHANGEDB_AML_STAFF_RESULT_CLOSURE
/**
 * Type of the closure for #TALER_EXCHANGEDB_AmlStaffCallback.
 */
#define TALER_EXCHANGEDB_AML_STAFF_RESULT_CLOSURE void
#endif

/* Callback typedefs */
/**
 * Function called with a status change of an AML staff member.
 *
 * @param cls closure
 * @param rowid unique serial ID of the entry in aml_staff
 * @param decider_pub public key of the staff member
 * @param master_sig signature by the exchange's offline master key
 *        affirming this status, of purpose #TALER_SIGNATURE_MASTER_AML_KEY
 * @param decider_name legal name of the staff member
 * @param is_active true if the staff member could act from @a last_change on
 * @param read_only true if the staff member had read-only access
 * @param last_change when the status took effect, as claimed by the exchange
 * @return #GNUNET_OK to continue to iterate, #GNUNET_SYSERR to stop
 */
typedef enum GNUNET_GenericReturnValue
(*TALER_EXCHANGEDB_AmlStaffCallback)(
  TALER_EXCHANGEDB_AML_STAFF_RESULT_CLOSURE *cls,
  uint64_t rowid,
  const struct TALER_AmlOfficerPublicKeyP *decider_pub,
  const struct TALER_MasterSignatureP *master_sig,
  const char *decider_name,
  bool is_active,
  bool read_only,
  struct GNUNET_TIME_Timestamp last_change);


/**
 * Select AML staff status changes with a serial ID of at least @a serial_id,
 * in the order in which the exchange recorded them.
 *
 * `aml_staff` is append-only: a status change is a new row, so a caller can
 * resume from where it stopped and will still see every change.  The rows an
 * officer accumulates are that officer's history, oldest first.
 *
 * @param pg the database context
 * @param serial_id lowest serial ID to include
 * @param cb function to call on each result
 * @param cb_cls closure for @a cb
 * @return transaction status code
 */
enum GNUNET_DB_QueryStatus
TALER_EXCHANGEDB_iterate_aml_staff_above_serial_id (
  struct TALER_EXCHANGEDB_PostgresContext *pg,
  uint64_t serial_id,
  TALER_EXCHANGEDB_AmlStaffCallback cb,
  TALER_EXCHANGEDB_AML_STAFF_RESULT_CLOSURE *cb_cls);

#endif
