/*
   This file is part of TALER
   Copyright (C) 2025 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_product_image_by_hash.c
 * @brief Implementation of the get_product_image_by_hash function for Postgres
 * @author Bohdan Potuzhnyi
 */
#include "merchantdb_lib.h"
#include "merchant-database/get_product_image_by_hash.h"
#include "helper.h"


enum GNUNET_DB_QueryStatus
TALER_MERCHANTDB_get_product_image_by_hash (
  struct TALER_MERCHANTDB_PostgresContext *pg,
  const char *instance_id,
  const char *image_hash,
  char **image)
{
  struct GNUNET_PQ_QueryParam params[] = {
    GNUNET_PQ_query_param_string (image_hash),
    GNUNET_PQ_query_param_end
  };
  struct GNUNET_PQ_ResultSpec rs[] = {
    GNUNET_PQ_result_spec_string ("image",
                                  image),
    GNUNET_PQ_result_spec_end
  };

  GNUNET_assert (NULL != pg->current_merchant_id);
  GNUNET_assert (0 == strcmp (instance_id,
                              pg->current_merchant_id));
  TMH_PQ_prepare_anon (
    pg,
    "SELECT"
    "  mi.image"
    " FROM merchant_inventory mi"
    " WHERE mi.image_hash=$1");
  *image = NULL;
  return GNUNET_PQ_eval_prepared_singleton_select (
    pg->conn,
    "",
    params,
    rs);
}
