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             : }