1 files changed, 86 insertions, 0 deletions
diff --git a/src/backenddb/pg_update_product.c b/src/backenddb/pg_update_product.c
new file mode 100644
index 00000000..cd7c1857
--- /dev/null
+++ b/src/backenddb/pg_update_product.c
@@ -0,0 +1,86 @@
+/*
+   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.c
+ * @brief Implementation of the update_product function for Postgres
+ * @author Christian Grothoff
+ * @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_update_product.h"
+#include "pg_helper.h"
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_update_product (void *cls,
+                       const char *instance_id,
+                       const char *product_id,
+                       const struct TALER_MERCHANTDB_ProductDetails *pd)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_string (instance_id), /* $1 */
+    GNUNET_PQ_query_param_string (product_id),
+    GNUNET_PQ_query_param_string (pd->description),
+    TALER_PQ_query_param_json (pd->description_i18n),
+    GNUNET_PQ_query_param_string (pd->unit),
+    GNUNET_PQ_query_param_string (pd->image), /* $6 */
+    TALER_PQ_query_param_json (pd->taxes),
+    TALER_PQ_query_param_amount_with_currency (pg->conn,
+                                 &pd->price),       /* $8 */
+    GNUNET_PQ_query_param_uint64 (&pd->total_stock),  /* $9 */
+    GNUNET_PQ_query_param_uint64 (&pd->total_lost),
+    TALER_PQ_query_param_json (pd->address),
+    GNUNET_PQ_query_param_timestamp (&pd->next_restock),
+    GNUNET_PQ_query_param_uint32 (&pd->minimum_age),
+    GNUNET_PQ_query_param_end
+  };
+
+  if ( (pd->total_stock < pd->total_lost + pd->total_sold) ||
+       (pd->total_lost < pd->total_lost
+        + pd->total_sold) /* integer overflow */)
+  {
+    GNUNET_break (0);
+    return GNUNET_DB_STATUS_HARD_ERROR;
+  }
+  check_connection (pg);
+  PREPARE (pg,
+           "update_product",
+           "UPDATE merchant_inventory SET"
+           " description=$3"
+           ",description_i18n=$4"
+           ",unit=$5"
+           ",image=$6"
+           ",taxes=$7"
+           ",price=$8"
+           ",total_stock=$9"
+           ",total_lost=$10"
+           ",address=$11"
+           ",next_restock=$12"
+           ",minimum_age=$13"
+           " WHERE merchant_serial="
+           "   (SELECT merchant_serial"
+           "      FROM merchant_instances"
+           "      WHERE merchant_id=$1)"
+           "   AND product_id=$2"
+           "   AND total_stock <= $9"
+           "   AND total_lost <= $10");
+  return GNUNET_PQ_eval_prepared_non_select (pg->conn,
+                                             "update_product",
+                                             params);
+}