1 files changed, 109 insertions, 0 deletions
diff --git a/src/backenddb/pg_lookup_product.c b/src/backenddb/pg_lookup_product.c
new file mode 100644
index 00000000..65a3c0e5
--- /dev/null
+++ b/src/backenddb/pg_lookup_product.c
@@ -0,0 +1,109 @@
+/*
+   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_product.c
+ * @brief Implementation of the lookup_product 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_product.h"
+#include "pg_helper.h"
+
+enum GNUNET_DB_QueryStatus
+TMH_PG_lookup_product (void *cls,
+                       const char *instance_id,
+                       const char *product_id,
+                       struct TALER_MERCHANTDB_ProductDetails *pd)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_string (instance_id),
+    GNUNET_PQ_query_param_string (product_id),
+    GNUNET_PQ_query_param_end
+  };
+
+  if (NULL == pd)
+  {
+    struct GNUNET_PQ_ResultSpec rs_null[] = {
+      GNUNET_PQ_result_spec_end
+    };
+
+    check_connection (pg);
+    return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                     "lookup_product",
+                                                     params,
+                                                     rs_null);
+  }
+  else
+  {
+    struct GNUNET_PQ_ResultSpec rs[] = {
+      GNUNET_PQ_result_spec_string ("description",
+                                    &pd->description),
+      TALER_PQ_result_spec_json ("description_i18n",
+                                 &pd->description_i18n),
+      GNUNET_PQ_result_spec_string ("unit",
+                                    &pd->unit),
+      TALER_PQ_result_spec_amount_with_currency ("price",
+                                   &pd->price),
+      TALER_PQ_result_spec_json ("taxes",
+                                 &pd->taxes),
+      GNUNET_PQ_result_spec_uint64 ("total_stock",
+                                    &pd->total_stock),
+      GNUNET_PQ_result_spec_uint64 ("total_sold",
+                                    &pd->total_sold),
+      GNUNET_PQ_result_spec_uint64 ("total_lost",
+                                    &pd->total_lost),
+      GNUNET_PQ_result_spec_string ("image",
+                                    &pd->image),
+      TALER_PQ_result_spec_json ("address",
+                                 &pd->address),
+      GNUNET_PQ_result_spec_timestamp ("next_restock",
+                                       &pd->next_restock),
+      GNUNET_PQ_result_spec_uint32 ("minimum_age",
+                                    &pd->minimum_age),
+      GNUNET_PQ_result_spec_end
+    };
+
+    check_connection (pg);
+    PREPARE (pg,
+             "lookup_product",
+             "SELECT"
+             " description"
+             ",description_i18n"
+             ",unit"
+             ",price"
+             ",taxes"
+             ",total_stock"
+             ",total_sold"
+             ",total_lost"
+             ",image"
+             ",merchant_inventory.address"
+             ",next_restock"
+             ",minimum_age"
+             " FROM merchant_inventory"
+             " JOIN merchant_instances"
+             "   USING (merchant_serial)"
+             " WHERE merchant_instances.merchant_id=$1"
+             "   AND merchant_inventory.product_id=$2");
+    return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                     "lookup_product",
+                                                     params,
+                                                     rs);
+  }
+}