Line data    Source code

       1             : /*
       2             :   This file is part of TALER
       3             :   (C) 2019, 2020, 2021, 2024 Taler Systems SA
       4             : 
       5             :   TALER is free software; you can redistribute it and/or modify it under the
       6             :   terms of the GNU Affero General Public License as published by the Free Software
       7             :   Foundation; either version 3, or (at your option) any later version.
       8             : 
       9             :   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
      10             :   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
      11             :   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
      12             : 
      13             :   You should have received a copy of the GNU General Public License along with
      14             :   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
      15             : */
      16             : /**
      17             :  * @file taler-merchant-httpd_private-get-pos.c
      18             :  * @brief implement GET /private/pos
      19             :  * @author Christian Grothoff
      20             :  */
      21             : #include "platform.h"
      22             : #include "taler-merchant-httpd_private-get-pos.h"
      23             : #include <taler/taler_json_lib.h>
      24             : 
      25             : /**
      26             :  * Closure for add_product().
      27             :  */
      28             : struct Context
      29             : {
      30             :   /**
      31             :    * JSON array of products we are building.
      32             :    */
      33             :   json_t *pa;
      34             : 
      35             :   /**
      36             :    * JSON array of categories we are building.
      37             :    */
      38             :   json_t *ca;
      39             : 
      40             : };
      41             : 
      42             : 
      43             : /**
      44             :  * Add category to the @e ca array.
      45             :  *
      46             :  * @param cls a `struct Context` with JSON arrays to build
      47             :  * @param category_id ID of the category
      48             :  * @param category_name name of the category
      49             :  * @param category_name_i18n translations of the @a category_name
      50             :  * @param product_count number of products in the category
      51             :  */
      52             : static void
      53           0 : add_category (
      54             :   void *cls,
      55             :   uint64_t category_id,
      56             :   const char *category_name,
      57             :   const json_t *category_name_i18n,
      58             :   uint64_t product_count)
      59             : {
      60           0 :   struct Context *ctx = cls;
      61             : 
      62             :   (void) product_count;
      63           0 :   GNUNET_assert (
      64             :     0 ==
      65             :     json_array_append_new (
      66             :       ctx->ca,
      67             :       GNUNET_JSON_PACK (
      68             :         GNUNET_JSON_pack_uint64 ("id",
      69             :                                  category_id),
      70             :         GNUNET_JSON_pack_object_incref ("name_i18n",
      71             :                                         (json_t *) category_name_i18n),
      72             :         GNUNET_JSON_pack_string ("name",
      73             :                                  category_name))));
      74           0 : }
      75             : 
      76             : 
      77             : /**
      78             :  * Add product details to our JSON array.
      79             :  *
      80             :  * @param cls a `struct Context` with JSON arrays to build
      81             :  * @param product_serial row ID of the product
      82             :  * @param product_id ID of the product
      83             :  * @param pd full product details
      84             :  * @param num_categories length of @a categories array
      85             :  * @param categories array of categories the
      86             :  *   product is in
      87             :  */
      88             : static void
      89           0 : add_product (void *cls,
      90             :              uint64_t product_serial,
      91             :              const char *product_id,
      92             :              const struct TALER_MERCHANTDB_ProductDetails *pd,
      93             :              size_t num_categories,
      94             :              const uint64_t *categories)
      95             : {
      96           0 :   struct Context *ctx = cls;
      97           0 :   json_t *pa = ctx->pa;
      98             :   json_t *cata;
      99             : 
     100           0 :   cata = json_array ();
     101           0 :   GNUNET_assert (NULL != cata);
     102           0 :   for (size_t i = 0; i<num_categories; i++)
     103           0 :     GNUNET_assert (
     104             :       0 == json_array_append_new (
     105             :         cata,
     106             :         json_integer (categories[i])));
     107           0 :   if (0 == num_categories)
     108             :   {
     109             :     // If there is no category, we return the default category
     110           0 :     GNUNET_assert (
     111             :       0 == json_array_append_new (
     112             :         cata,
     113             :         json_integer (0)));
     114             :   }
     115           0 :   GNUNET_assert (
     116             :     0 ==
     117             :     json_array_append_new (
     118             :       pa,
     119             :       GNUNET_JSON_PACK (
     120             :         GNUNET_JSON_pack_string ("product_name",
     121             :                                  pd->product_name),
     122             :         GNUNET_JSON_pack_string ("description",
     123             :                                  pd->description),
     124             :         GNUNET_JSON_pack_object_incref ("description_i18n",
     125             :                                         (json_t *) pd->description_i18n),
     126             :         GNUNET_JSON_pack_string ("unit",
     127             :                                  pd->unit),
     128             :         TALER_JSON_pack_amount ("price",
     129             :                                 &pd->price),
     130             :         GNUNET_JSON_pack_allow_null (
     131             :           GNUNET_JSON_pack_string ("image",
     132             :                                    pd->image)),
     133             :         GNUNET_JSON_pack_array_steal ("categories",
     134             :                                       cata),
     135             :         GNUNET_JSON_pack_allow_null (
     136             :           GNUNET_JSON_pack_array_incref ("taxes",
     137             :                                          (json_t *) pd->taxes)),
     138             :         (INT64_MAX == pd->total_stock)
     139             :         ? GNUNET_JSON_pack_int64 ("total_stock",
     140             :                                   pd->total_stock)
     141             :         : GNUNET_JSON_pack_allow_null (
     142             :           GNUNET_JSON_pack_string ("total_stock",
     143             :                                    NULL)),
     144             :         GNUNET_JSON_pack_uint64 ("minimum_age",
     145             :                                  pd->minimum_age),
     146             :         GNUNET_JSON_pack_uint64 ("product_serial",
     147             :                                  product_serial),
     148             :         GNUNET_JSON_pack_string ("product_id",
     149             :                                  product_id))));
     150           0 : }
     151             : 
     152             : 
     153             : MHD_RESULT
     154           0 : TMH_private_get_pos (const struct TMH_RequestHandler *rh,
     155             :                      struct MHD_Connection *connection,
     156             :                      struct TMH_HandlerContext *hc)
     157             : {
     158             :   struct Context ctx;
     159             :   enum GNUNET_DB_QueryStatus qs;
     160             : 
     161           0 :   ctx.pa = json_array ();
     162           0 :   GNUNET_assert (NULL != ctx.pa);
     163           0 :   ctx.ca = json_array ();
     164           0 :   GNUNET_assert (NULL != ctx.ca);
     165           0 :   GNUNET_assert (
     166             :     0 == json_array_append_new (
     167             :       ctx.ca,
     168             :       GNUNET_JSON_PACK (
     169             :         GNUNET_JSON_pack_uint64 ("id",
     170             :                                  0),
     171             :         GNUNET_JSON_pack_string ("name",
     172             :                                  "default"))));
     173           0 :   qs = TMH_db->lookup_categories (TMH_db->cls,
     174           0 :                                   hc->instance->settings.id,
     175             :                                   &add_category,
     176             :                                   &ctx);
     177           0 :   if (0 > qs)
     178             :   {
     179           0 :     GNUNET_break (0);
     180           0 :     json_decref (ctx.pa);
     181           0 :     json_decref (ctx.ca);
     182           0 :     return TALER_MHD_reply_with_error (connection,
     183             :                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
     184             :                                        TALER_EC_GENERIC_DB_FETCH_FAILED,
     185             :                                        NULL);
     186             :   }
     187           0 :   qs = TMH_db->lookup_all_products (TMH_db->cls,
     188           0 :                                     hc->instance->settings.id,
     189             :                                     &add_product,
     190             :                                     &ctx);
     191           0 :   if (0 > qs)
     192             :   {
     193           0 :     GNUNET_break (0);
     194           0 :     json_decref (ctx.pa);
     195           0 :     json_decref (ctx.ca);
     196           0 :     return TALER_MHD_reply_with_error (connection,
     197             :                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
     198             :                                        TALER_EC_GENERIC_DB_FETCH_FAILED,
     199             :                                        NULL);
     200             :   }
     201           0 :   return TALER_MHD_REPLY_JSON_PACK (
     202             :     connection,
     203             :     MHD_HTTP_OK,
     204             :     GNUNET_JSON_pack_array_steal ("categories",
     205             :                                   ctx.ca),
     206             :     GNUNET_JSON_pack_array_steal ("products",
     207             :                                   ctx.pa));
     208             : }
     209             : 
     210             : 
     211             : /* end of taler-merchant-httpd_private-get-pos.c */