From 0ce49789c7c63be9149e9938efcd3f7c4839dff9 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 15 Sep 2024 00:55:47 +0200
Subject: fix category array construction (#8834)

---
 src/backend/taler-merchant-httpd_private-get-pos.c | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)

(limited to 'src')

diff --git a/src/backend/taler-merchant-httpd_private-get-pos.c b/src/backend/taler-merchant-httpd_private-get-pos.c
index f8f84400..6221fc08 100644
--- a/src/backend/taler-merchant-httpd_private-get-pos.c
+++ b/src/backend/taler-merchant-httpd_private-get-pos.c
@@ -40,6 +40,40 @@ struct Context
 };
 
 
+/**
+ * Add category to the @e ca array.
+ *
+ * @param cls a `struct Context` with JSON arrays to build
+ * @param category_id ID of the category
+ * @param category_name name of the category
+ * @param category_name_i18n translations of the @a category_name
+ * @param product_count number of products in the category
+ */
+static void
+add_category (
+  void *cls,
+  uint64_t category_id,
+  const char *category_name,
+  const json_t *category_name_i18n,
+  uint64_t product_count)
+{
+  struct Context *ctx = cls;
+
+  (void) product_count;
+  GNUNET_assert (
+    0 ==
+    json_array_append_new (
+      ctx->ca,
+      GNUNET_JSON_PACK (
+        GNUNET_JSON_pack_uint64 ("id",
+                                 category_id),
+        GNUNET_JSON_pack_object_incref ("name_i18n",
+                                        (json_t *) category_name_i18n),
+        GNUNET_JSON_pack_string ("name",
+                                 category_name))));
+}
+
+
 /**
  * Add product details to our JSON array.
  *
@@ -134,6 +168,20 @@ TMH_private_get_pos (const struct TMH_RequestHandler *rh,
                                  0),
         GNUNET_JSON_pack_string ("name",
                                  "default"))));
+  qs = TMH_db->lookup_categories (TMH_db->cls,
+                                  hc->instance->settings.id,
+                                  &add_category,
+                                  &ctx);
+  if (0 > qs)
+  {
+    GNUNET_break (0);
+    json_decref (ctx.pa);
+    json_decref (ctx.ca);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_GENERIC_DB_FETCH_FAILED,
+                                       NULL);
+  }
   qs = TMH_db->lookup_all_products (TMH_db->cls,
                                     hc->instance->settings.id,
                                     &add_product,
-- 
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