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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_increase_refund.h
* @brief implementation of the increase_refund function for Postgres
* @author Christian Grothoff
*/
#ifndef PG_INCREASE_REFUND_H
#define PG_INCREASE_REFUND_H
#include <taler/taler_util.h>
#include <taler/taler_json_lib.h>
#include "taler_merchantdb_plugin.h"
/**
* Function called when some backoffice staff decides to award or
* increase the refund on an existing contract. This function
* MUST be called from within a transaction scope setup by the
* caller as it executes mulrewardle SQL statements.
*
* @param cls closure
* @param instance_id instance identifier
* @param order_id the order to increase the refund for
* @param refund maximum refund to return to the customer for this contract
* @param reason 0-terminated UTF-8 string giving the reason why the customer
* got a refund (free form, business-specific)
* @return transaction status
* #GNUNET_DB_STATUS_SUCCESS_NO_RESULTS if @a refund is ABOVE the amount we
* were originally paid and thus the transaction failed;
* #GNUNET_DB_STATUS_SUCCESS_ONE_RESULT if the request is valid,
* regardless of whether it actually increased the refund beyond
* what was already refunded (idempotency!)
*/
enum TALER_MERCHANTDB_RefundStatus
TMH_PG_increase_refund (void *cls,
const char *instance_id,
const char *order_id,
const struct TALER_Amount *refund,
const char *reason);
#endif
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