/*
   This file is part of TALER
   Copyright (C) 2024 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/update_category.c
 * @brief Implementation of the update_category function for Postgres
 * @author Christian Grothoff
 */
#include "platform.h"
#include <taler/taler_pq_lib.h>
#include "merchant-database/update_category.h"
#include "helper.h"


enum GNUNET_DB_QueryStatus
TALER_MERCHANTDB_update_category (
  struct TALER_MERCHANTDB_PostgresContext *pg,
  const char *instance_id,
  uint64_t category_id,
  const char *category_name,
  const json_t *category_name_i18n,
  bool *conflict)
{
  struct GNUNET_PQ_QueryParam params[] = {
    GNUNET_PQ_query_param_uint64 (&category_id),
    GNUNET_PQ_query_param_string (category_name),
    TALER_PQ_query_param_json (category_name_i18n),
    GNUNET_PQ_query_param_end
  };
  bool not_found;
  struct GNUNET_PQ_ResultSpec rs[] = {
    GNUNET_PQ_result_spec_bool ("conflict",
                                conflict),
    GNUNET_PQ_result_spec_bool ("not_found",
                                &not_found),
    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"
                       " out_conflict AS conflict"
                       ",out_not_found AS not_found"
                       " FROM merchant_do_update_category"
                       "($1,$2,$3::TEXT::JSONB);");
  qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
                                                 "",
                                                 params,
                                                 rs);
  if (qs <= 0)
    return qs;
  if (not_found)
    return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
  return GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
}
