merchant

Merchant backend to process payments, run by merchants
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update_contract_session.c (3091B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2025 Taler Systems SA
      4 
      5    TALER is free software; you can redistribute it and/or modify it under the
      6    terms of the GNU 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/backenddb/update_contract_session.c
     18  * @brief Implementation of the update_contract_session function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "platform.h"
     22 #include <taler/taler_pq_lib.h>
     23 #include "merchant-database/update_contract_session.h"
     24 #include "helper.h"
     25 
     26 
     27 enum GNUNET_DB_QueryStatus
     28 TALER_MERCHANTDB_update_contract_session (
     29   struct TALER_MERCHANTDB_PostgresContext *pg,
     30   const char *instance_id,
     31   const struct TALER_PrivateContractHashP *h_contract_terms,
     32   const char *session_id,
     33   char **fulfillment_url,
     34   bool *refunded)
     35 {
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_auto_from_type (h_contract_terms),
     38     GNUNET_PQ_query_param_string (session_id),
     39     GNUNET_PQ_query_param_end
     40   };
     41   struct GNUNET_PQ_ResultSpec rs[] = {
     42     GNUNET_PQ_result_spec_allow_null (
     43       GNUNET_PQ_result_spec_string ("fulfillment_url",
     44                                     fulfillment_url),
     45       NULL),
     46     GNUNET_PQ_result_spec_bool ("refunded",
     47                                 refunded),
     48     GNUNET_PQ_result_spec_end
     49   };
     50 
     51   /* Session ID must always be given by the caller. */
     52   GNUNET_assert (NULL != session_id);
     53   GNUNET_assert (NULL != pg->current_merchant_id);
     54   GNUNET_assert (0 == strcmp (instance_id,
     55                               pg->current_merchant_id));
     56 
     57   /* no preflight check here, run in transaction by caller! */
     58   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
     59               "Updating session for h_contract_terms '%s' of `%s' to `%s'\n",
     60               GNUNET_h2s (&h_contract_terms->hash),
     61               instance_id,
     62               session_id);
     63   TMH_PQ_prepare_anon (pg,
     64                        "UPDATE merchant_contract_terms mct SET"
     65                        " session_id=$2"
     66                        " WHERE h_contract_terms=$1"
     67                        " RETURNING"
     68                        "  contract_terms->>'fulfillment_url' AS fulfillment_url"
     69                        " ,EXISTS (SELECT 1"
     70                        "            FROM merchant_refunds mr"
     71                        "           WHERE order_serial=mct.order_serial"
     72                        " ) AS refunded");
     73   *fulfillment_url = NULL;
     74   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     75                                                    "",
     76                                                    params,
     77                                                    rs);
     78 }