Line data    Source code

       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 backenddb/pg_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_error_codes.h>
      23              : #include <taler/taler_dbevents.h>
      24              : #include <taler/taler_pq_lib.h>
      25              : #include "pg_lookup_order_by_fulfillment.h"
      26              : #include "pg_helper.h"
      27              : 
      28              : 
      29              : enum GNUNET_DB_QueryStatus
      30           18 : TMH_PG_lookup_order_by_fulfillment (
      31              :   void *cls,
      32              :   const char *instance_id,
      33              :   const char *fulfillment_url,
      34              :   const char *session_id,
      35              :   bool allow_refunded_for_repurchase,
      36              :   char **order_id)
      37              : {
      38           18 :   struct PostgresClosure *pg = cls;
      39           18 :   struct GNUNET_PQ_QueryParam params[] = {
      40           18 :     GNUNET_PQ_query_param_string (instance_id),
      41           18 :     GNUNET_PQ_query_param_string (fulfillment_url),
      42           18 :     GNUNET_PQ_query_param_string (session_id),
      43           18 :     GNUNET_PQ_query_param_bool (allow_refunded_for_repurchase),
      44              :     GNUNET_PQ_query_param_end
      45              :   };
      46           18 :   struct GNUNET_PQ_ResultSpec rs[] = {
      47           18 :     GNUNET_PQ_result_spec_string ("order_id",
      48              :                                   order_id),
      49              :     GNUNET_PQ_result_spec_end
      50              :   };
      51              : 
      52           18 :   check_connection (pg);
      53           18 :   PREPARE (pg,
      54              :            "lookup_order_by_fulfillment",
      55              :            "SELECT"
      56              :            "  mct.order_id"
      57              :            " FROM merchant_contract_terms mct"
      58              :            " LEFT JOIN merchant_refunds mref"
      59              :            "   USING (order_serial)"
      60              :            " WHERE fulfillment_url=$2"
      61              :            "   AND session_id=$3"
      62              :            "   AND merchant_serial="
      63              :            "        (SELECT merchant_serial"
      64              :            "           FROM merchant_instances"
      65              :            "          WHERE merchant_id=$1)"
      66              :            "   AND ((CAST($4 AS BOOL)) OR"
      67              :            "        mref.refund_serial IS NULL)"
      68              :            /* Theoretically, multiple paid orders
      69              :               for the same fulfillment URL could
      70              :               exist for this session_id -- if a
      71              :               wallet was broken and did multiple
      72              :               payments without repurchase detection.
      73              :               So we need to limit to 1 when returning! */
      74              :            " ORDER BY order_id DESC"
      75              :            " LIMIT 1;");
      76           18 :   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      77              :                                                    "lookup_order_by_fulfillment",
      78              :                                                    params,
      79              :                                                    rs);
      80              : }