Line data    Source code

       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/get_unit.c
      18              :  * @brief Implementation of the get_unit function for Postgres
      19              :  * @author Bohdan Potuzhnyi
      20              :  */
      21              : #include "platform.h"
      22              : #include <taler/taler_pq_lib.h>
      23              : #include "merchant-database/get_unit.h"
      24              : #include "helper.h"
      25              : 
      26              : 
      27              : enum GNUNET_DB_QueryStatus
      28           76 : TALER_MERCHANTDB_get_unit (
      29              :   struct TALER_MERCHANTDB_PostgresContext *pg,
      30              :   const char *instance_id,
      31              :   const char *unit_id,
      32              :   struct TALER_MERCHANTDB_UnitDetails *ud)
      33              : {
      34              :   enum GNUNET_DB_QueryStatus qs;
      35           76 :   struct GNUNET_PQ_QueryParam params[] = {
      36           76 :     GNUNET_PQ_query_param_string (unit_id),
      37              :     GNUNET_PQ_query_param_end
      38              :   };
      39           76 :   struct GNUNET_PQ_ResultSpec rs[] = {
      40           76 :     GNUNET_PQ_result_spec_uint64 ("unit_serial",
      41              :                                   &ud->unit_serial),
      42           76 :     GNUNET_PQ_result_spec_string ("unit",
      43              :                                   &ud->unit),
      44           76 :     GNUNET_PQ_result_spec_string ("unit_name_long",
      45              :                                   &ud->unit_name_long),
      46           76 :     GNUNET_PQ_result_spec_string ("unit_name_short",
      47              :                                   &ud->unit_name_short),
      48           76 :     TALER_PQ_result_spec_json ("unit_name_long_i18n",
      49              :                                &ud->unit_name_long_i18n),
      50           76 :     TALER_PQ_result_spec_json ("unit_name_short_i18n",
      51              :                                &ud->unit_name_short_i18n),
      52           76 :     GNUNET_PQ_result_spec_bool ("unit_allow_fraction",
      53              :                                 &ud->unit_allow_fraction),
      54           76 :     GNUNET_PQ_result_spec_uint32 ("unit_precision_level",
      55              :                                   &ud->unit_precision_level),
      56           76 :     GNUNET_PQ_result_spec_bool ("unit_active",
      57              :                                 &ud->unit_active),
      58           76 :     GNUNET_PQ_result_spec_bool ("unit_builtin",
      59              :                                 &ud->unit_builtin),
      60              :     GNUNET_PQ_result_spec_end
      61              :   };
      62              : 
      63           76 :   GNUNET_assert (NULL != pg->current_merchant_id);
      64           76 :   GNUNET_assert (0 == strcmp (instance_id,
      65              :                               pg->current_merchant_id));
      66              :   // FIXME: combine both SELECT statements into a single statement!
      67           76 :   TMH_PQ_prepare_anon (pg,
      68              :                        "SELECT"
      69              :                        "  cu.unit_serial"
      70              :                        " ,cu.unit"
      71              :                        " ,cu.unit_name_long"
      72              :                        " ,cu.unit_name_short"
      73              :                        " ,cu.unit_name_long_i18n"
      74              :                        " ,cu.unit_name_short_i18n"
      75              :                        " ,cu.unit_allow_fraction"
      76              :                        " ,cu.unit_precision_level"
      77              :                        " ,cu.unit_active"
      78              :                        " ,FALSE AS unit_builtin"
      79              :                        " FROM merchant_custom_units cu"
      80              :                        " WHERE cu.unit=$1");
      81           76 :   qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
      82              :                                                  "",
      83              :                                                  params,
      84              :                                                  rs);
      85           76 :   if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs)
      86            8 :     return qs;
      87           68 :   TMH_PQ_prepare_anon (pg,
      88              :                        "SELECT"
      89              :                        "  bu.unit_serial"
      90              :                        " ,bu.unit"
      91              :                        " ,bu.unit_name_long"
      92              :                        " ,bu.unit_name_short"
      93              :                        " ,bu.unit_name_long_i18n"
      94              :                        " ,bu.unit_name_short_i18n"
      95              :                        " ,COALESCE(bo.override_allow_fraction, bu.unit_allow_fraction)"
      96              :                        "   AS unit_allow_fraction"
      97              :                        " ,COALESCE(bo.override_precision_level, bu.unit_precision_level)"
      98              :                        "   AS unit_precision_level"
      99              :                        " ,COALESCE(bo.override_active, bu.unit_active)"
     100              :                        "   AS unit_active"
     101              :                        " ,TRUE AS unit_builtin"
     102              :                        " FROM merchant.merchant_builtin_units bu"
     103              :                        " LEFT JOIN merchant_builtin_unit_overrides bo"
     104              :                        "   ON bo.builtin_unit_serial = bu.unit_serial"
     105              :                        " WHERE bu.unit=$1");
     106           68 :   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
     107              :                                                    "",
     108              :                                                    params,
     109              :                                                    rs);
     110              : }