1 files changed, 77 insertions, 0 deletions
diff --git a/src/backenddb/pg_refund_coin.c b/src/backenddb/pg_refund_coin.c
new file mode 100644
index 00000000..1bde2974
--- /dev/null
+++ b/src/backenddb/pg_refund_coin.c
@@ -0,0 +1,77 @@
+/*
+   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_refund_coin.c
+ * @brief Implementation of the refund_coin function for Postgres
+ * @author Iván Ávalos
+ */
+#include "platform.h"
+#include <taler/taler_error_codes.h>
+#include <taler/taler_dbevents.h>
+#include <taler/taler_pq_lib.h>
+#include "pg_refund_coin.h"
+#include "pg_helper.h"
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_refund_coin (void *cls,
+                    const char *instance_id,
+                    const struct TALER_PrivateContractHashP *h_contract_terms,
+                    struct GNUNET_TIME_Timestamp refund_timestamp,
+                    const struct TALER_CoinSpendPublicKeyP *coin_pub,
+                    const char *reason)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_string (instance_id),
+    GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
+    GNUNET_PQ_query_param_timestamp (&refund_timestamp),
+    GNUNET_PQ_query_param_auto_from_type (coin_pub),
+    GNUNET_PQ_query_param_string (reason),
+    GNUNET_PQ_query_param_end
+  };
+  PREPARE (pg,
+           "refund_coin",
+           "INSERT INTO merchant_refunds"
+           "(order_serial"
+           ",rtransaction_id"
+           ",refund_timestamp"
+           ",coin_pub"
+           ",reason"
+           ",refund_amount"
+           ") "
+           "SELECT "
+           " dcon.order_serial"
+           ",0" /* rtransaction_id always 0 for /abort */
+           ",$3"
+           ",dep.coin_pub"
+           ",$5"
+           ",dep.amount_with_fee"
+           " FROM merchant_deposits dep"
+           " JOIN merchant_deposit_confirmations dcon"
+           "   USING (deposit_confirmation_serial)"
+           " WHERE dep.coin_pub=$4"
+           "   AND dcon.order_serial="
+           "  (SELECT order_serial"
+           "     FROM merchant_contract_terms"
+           "    WHERE h_contract_terms=$2"
+           "      AND merchant_serial="
+           "        (SELECT merchant_serial"
+           "           FROM merchant_instances"
+           "          WHERE merchant_id=$1))");
+  return GNUNET_PQ_eval_prepared_non_select (pg->conn,
+                                             "refund_coin",
+                                             params);
+}