1 files changed, 77 insertions, 0 deletions
diff --git a/src/backenddb/pg_lookup_order_status_by_serial.c b/src/backenddb/pg_lookup_order_status_by_serial.c
new file mode 100644
index 00000000..b6a4ebb0
--- /dev/null
+++ b/src/backenddb/pg_lookup_order_status_by_serial.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_lookup_order_status_by_serial.c
+ * @brief Implementation of the lookup_order_status_by_serial 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_lookup_order_status_by_serial.h"
+#include "pg_helper.h"
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_lookup_order_status_by_serial (void *cls,
+                                      const char *instance_id,
+                                      uint64_t order_serial,
+                                      char **order_id,
+                                      struct TALER_PrivateContractHashP *
+                                      h_contract_terms,
+                                      bool *paid)
+{
+  struct PostgresClosure *pg = cls;
+  uint8_t paid8;
+  enum GNUNET_DB_QueryStatus qs;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_string (instance_id),
+    GNUNET_PQ_query_param_uint64 (&order_serial),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
+                                          h_contract_terms),
+    GNUNET_PQ_result_spec_auto_from_type ("paid",
+                                          &paid8),
+    GNUNET_PQ_result_spec_string ("order_id",
+                                  order_id),
+    GNUNET_PQ_result_spec_end
+  };
+
+  check_connection (pg);
+  PREPARE (pg,
+           "lookup_order_status_by_serial",
+           "SELECT"
+           " h_contract_terms"
+           ",order_id"
+           ",paid"
+           " FROM merchant_contract_terms"
+           " WHERE merchant_serial="
+           "     (SELECT merchant_serial "
+           "        FROM merchant_instances"
+           "        WHERE merchant_id=$1)"
+           "   AND order_serial=$2");
+  qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                 "lookup_order_status_by_serial",
+                                                 params,
+                                                 rs);
+  if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT == qs)
+    *paid = (0 != paid8);
+  else
+    *paid = false; /* just to be safe(r) */
+  return qs;
+}