merchant

Merchant backend to process payments, run by merchants
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pg_refund_coin.c (2913B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2022 Taler Systems SA
      4 
      5    TALER is free software; you can redistribute it and/or modify it under the
      6    terms of the GNU General Public License as published by the Free Software
      7    Foundation; either version 3, or (at your option) any later version.
      8 
      9    TALER is distributed in the hope that it will be useful, but WITHOUT ANY
     10    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
     12 
     13    You should have received a copy of the GNU General Public License along with
     14    TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15  */
     16 /**
     17  * @file backenddb/pg_refund_coin.c
     18  * @brief Implementation of the refund_coin function for Postgres
     19  * @author Iván Ávalos
     20  */
     21 #include "platform.h"
     22 #include <taler/taler_error_codes.h>
     23 #include <taler/taler_dbevents.h>
     24 #include <taler/taler_pq_lib.h>
     25 #include "pg_refund_coin.h"
     26 #include "pg_helper.h"
     27 
     28 enum GNUNET_DB_QueryStatus
     29 TMH_PG_refund_coin (void *cls,
     30                     const char *instance_id,
     31                     const struct TALER_PrivateContractHashP *h_contract_terms,
     32                     struct GNUNET_TIME_Timestamp refund_timestamp,
     33                     const struct TALER_CoinSpendPublicKeyP *coin_pub,
     34                     const char *reason)
     35 {
     36   struct PostgresClosure *pg = cls;
     37   struct GNUNET_PQ_QueryParam params[] = {
     38     GNUNET_PQ_query_param_string (instance_id),
     39     GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
     40     GNUNET_PQ_query_param_timestamp (&refund_timestamp),
     41     GNUNET_PQ_query_param_auto_from_type (coin_pub),
     42     GNUNET_PQ_query_param_string (reason),
     43     GNUNET_PQ_query_param_end
     44   };
     45   PREPARE (pg,
     46            "refund_coin",
     47            "INSERT INTO merchant_refunds"
     48            "(order_serial"
     49            ",rtransaction_id"
     50            ",refund_timestamp"
     51            ",coin_pub"
     52            ",reason"
     53            ",refund_amount"
     54            ") "
     55            "SELECT "
     56            " dcon.order_serial"
     57            ",0" /* rtransaction_id always 0 for /abort */
     58            ",$3"
     59            ",dep.coin_pub"
     60            ",$5"
     61            ",dep.amount_with_fee"
     62            " FROM merchant_deposits dep"
     63            " JOIN merchant_deposit_confirmations dcon"
     64            "   USING (deposit_confirmation_serial)"
     65            " WHERE dep.coin_pub=$4"
     66            "   AND dcon.order_serial="
     67            "  (SELECT order_serial"
     68            "     FROM merchant_contract_terms"
     69            "    WHERE h_contract_terms=$2"
     70            "      AND merchant_serial="
     71            "        (SELECT merchant_serial"
     72            "           FROM merchant_instances"
     73            "          WHERE merchant_id=$1))");
     74   return GNUNET_PQ_eval_prepared_non_select (pg->conn,
     75                                              "refund_coin",
     76                                              params);
     77 }