merchant

Merchant backend to process payments, run by merchants
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taler-merchant-httpd_get-private-categories-CATEGORY_ID.c (4115B)

      1 /*
      2   This file is part of TALER
      3   (C) 2022-2024 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 src/backend/taler-merchant-httpd_get-private-categories-CATEGORY_ID.c
     18  * @brief implement GET /private/categories/$ID
     19  * @author Christian Grothoff
     20  */
     21 #include "platform.h"
     22 #include "taler-merchant-httpd_get-private-categories-CATEGORY_ID.h"
     23 #include <taler/taler_json_lib.h>
     24 #include "merchant-database/select_category.h"
     25 
     26 
     27 /**
     28  * Handle a GET "/private/categories/$ID" request.
     29  *
     30  * @param rh context of the handler
     31  * @param connection the MHD connection to handle
     32  * @param[in,out] hc context with further information about the request
     33  * @return MHD result code
     34  */
     35 enum MHD_Result
     36 TMH_private_get_categories_ID (
     37   const struct TMH_RequestHandler *rh,
     38   struct MHD_Connection *connection,
     39   struct TMH_HandlerContext *hc)
     40 {
     41   struct TMH_MerchantInstance *mi = hc->instance;
     42   enum GNUNET_DB_QueryStatus qs;
     43   unsigned long long cnum;
     44   char dummy;
     45   struct TALER_MERCHANTDB_CategoryDetails cd;
     46   size_t num_products = 0;
     47   char *products = NULL;
     48 
     49   GNUNET_assert (NULL != mi);
     50   GNUNET_assert (NULL != hc->infix);
     51   if (1 != sscanf (hc->infix,
     52                    "%llu%c",
     53                    &cnum,
     54                    &dummy))
     55   {
     56     GNUNET_break_op (0);
     57     return TALER_MHD_reply_with_error (
     58       connection,
     59       MHD_HTTP_BAD_REQUEST,
     60       TALER_EC_GENERIC_PARAMETER_MALFORMED,
     61       "category_id must be a number");
     62   }
     63 
     64   qs = TALER_MERCHANTDB_select_category (TMH_db,
     65                                          mi->settings.id,
     66                                          cnum,
     67                                          &cd,
     68                                          &num_products,
     69                                          &products);
     70   if (0 > qs)
     71   {
     72     GNUNET_break (0);
     73     return TALER_MHD_reply_with_error (connection,
     74                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
     75                                        TALER_EC_GENERIC_DB_FETCH_FAILED,
     76                                        "select_category");
     77   }
     78   if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
     79   {
     80     return TALER_MHD_reply_with_error (connection,
     81                                        MHD_HTTP_NOT_FOUND,
     82                                        TALER_EC_MERCHANT_GENERIC_CATEGORY_UNKNOWN,
     83                                        hc->infix);
     84   }
     85   {
     86     enum MHD_Result ret;
     87     json_t *jproducts;
     88     const char *pos = products;
     89 
     90     jproducts = json_array ();
     91     GNUNET_assert (NULL != jproducts);
     92     for (unsigned int i = 0; i<num_products; i++)
     93     {
     94       const char *product_id = pos;
     95       json_t *jprod;
     96 
     97       pos = pos + strlen (product_id) + 1;
     98       jprod = GNUNET_JSON_PACK (
     99         GNUNET_JSON_pack_string ("product_id",
    100                                  product_id));
    101       GNUNET_assert (0 ==
    102                      json_array_append_new (jproducts,
    103                                             jprod));
    104     }
    105     GNUNET_free (products);
    106     ret = TALER_MHD_REPLY_JSON_PACK (
    107       connection,
    108       MHD_HTTP_OK,
    109       GNUNET_JSON_pack_string ("name",
    110                                cd.category_name),
    111       GNUNET_JSON_pack_allow_null (
    112         GNUNET_JSON_pack_object_incref ("name_i18n",
    113                                         cd.category_name_i18n)),
    114       GNUNET_JSON_pack_array_steal ("products",
    115                                     jproducts));
    116     TALER_MERCHANTDB_category_details_free (&cd);
    117     return ret;
    118   }
    119 }
    120 
    121 
    122 /* end of taler-merchant-httpd_get-private-categories-CATEGORY_ID.c */