merchant

Merchant backend to process payments, run by merchants
Log | Files | Refs | Submodules | README | LICENSE

lookup_order_by_fulfillment.c (3024B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2023 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/lookup_order_by_fulfillment.c
     18  * @brief Implementation of the lookup_order_by_fulfillment function for Postgres
     19  * @author Iván Ávalos
     20  */
     21 #include "platform.h"
     22 #include <taler/taler_pq_lib.h>
     23 #include "merchant-database/lookup_order_by_fulfillment.h"
     24 #include "helper.h"
     25 
     26 
     27 enum GNUNET_DB_QueryStatus
     28 TALER_MERCHANTDB_lookup_order_by_fulfillment (
     29   struct TALER_MERCHANTDB_PostgresContext *pg,
     30   const char *instance_id,
     31   const char *fulfillment_url,
     32   const char *session_id,
     33   bool allow_refunded_for_repurchase,
     34   char **order_id)
     35 {
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_string (fulfillment_url),
     38     GNUNET_PQ_query_param_string (session_id),
     39     GNUNET_PQ_query_param_bool (allow_refunded_for_repurchase),
     40     GNUNET_PQ_query_param_end
     41   };
     42   struct GNUNET_PQ_ResultSpec rs[] = {
     43     GNUNET_PQ_result_spec_string ("order_id",
     44                                   order_id),
     45     GNUNET_PQ_result_spec_end
     46   };
     47 
     48   GNUNET_assert (NULL != pg->current_merchant_id);
     49   GNUNET_assert (0 == strcmp (instance_id,
     50                               pg->current_merchant_id));
     51   check_connection (pg);
     52   TMH_PQ_prepare_anon (pg,
     53                        "SELECT"
     54                        "  mct.order_id"
     55                        " FROM merchant_contract_terms mct"
     56                        " LEFT JOIN merchant_refunds mref"
     57                        "   USING (order_serial)"
     58                        " WHERE fulfillment_url=$1"
     59                        "   AND session_id=$2"
     60                        "   AND ((CAST($3 AS BOOL)) OR"
     61                        "        mref.refund_serial IS NULL)"
     62                        /* Theoretically, multiple paid orders
     63                           for the same fulfillment URL could
     64                           exist for this session_id -- if a
     65                           wallet was broken and did multiple
     66                           payments without repurchase detection.
     67                           So we need to limit to 1 when returning! */
     68                        " ORDER BY order_id DESC"
     69                        " LIMIT 1;");
     70   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     71                                                    "",
     72                                                    params,
     73                                                    rs);
     74 }