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/*
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 backenddb/pg_update_product.h
* @brief implementation of the update_product function for Postgres
* @author Christian Grothoff
*/
#ifndef PG_UPDATE_PRODUCT_H
#define PG_UPDATE_PRODUCT_H
#include <taler/taler_util.h>
#include <taler/taler_json_lib.h>
#include "taler_merchantdb_plugin.h"
/**
* Update details about a particular product. Note that the
* transaction must enforce that the sold/stocked/lost counters
* are not reduced (i.e. by expanding the WHERE clause on the existing
* values).
*
* @param cls closure
* @param instance_id instance to lookup products for
* @param product_id product to lookup
* @param[out] pd set to the product details on success, can be NULL
* (in that case we only want to check if the product exists)
* total_sold in @a pd is ignored, total_lost must not
* exceed total_stock minus the existing total_sold;
* total_sold and total_stock must be larger or equal to
* the existing value;
* @return database result code, #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS if the
* non-decreasing constraints are not met *or* if the product
* does not yet exist.
*/
enum GNUNET_DB_QueryStatus
TMH_PG_update_product (void *cls,
const char *instance_id,
const char *product_id,
const struct TALER_MERCHANTDB_ProductDetails *pd);
#endif
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