/*
   This file is part of TALER
   Copyright (C) 2022 Taler Systems SA

   TALER is free software; you can redistribute it and/or modify it under the
   terms of the GNU General Public License as published by the Free Software
   Foundation; either version 3, or (at your option) any later version.

   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

   You should have received a copy of the GNU General Public License along with
   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */
/**
 * @file backenddb/pg_update_contract_terms.c
 * @brief Implementation of the update_contract_terms function for Postgres
 * @author Iván Ávalos
 */
#include "platform.h"
#include <taler/taler_error_codes.h>
#include <taler/taler_dbevents.h>
#include <taler/taler_pq_lib.h>
#include "pg_update_contract_terms.h"
#include "pg_helper.h"

enum GNUNET_DB_QueryStatus
TMH_PG_update_contract_terms (void *cls,
                              const char *instance_id,
                              const char *order_id,
                              json_t *contract_terms)
{
  struct PostgresClosure *pg = cls;
  struct GNUNET_TIME_Timestamp pay_deadline;
  struct GNUNET_TIME_Timestamp refund_deadline;
  const char *fulfillment_url = NULL;
  struct TALER_PrivateContractHashP h_contract_terms;

  if (GNUNET_OK !=
      TALER_JSON_contract_hash (contract_terms,
                                &h_contract_terms))
  {
    GNUNET_break (0);
    return GNUNET_DB_STATUS_HARD_ERROR;
  }

  {
    struct GNUNET_JSON_Specification spec[] = {
      GNUNET_JSON_spec_timestamp ("pay_deadline",
                                  &pay_deadline),
      GNUNET_JSON_spec_timestamp ("refund_deadline",
                                  &refund_deadline),
      GNUNET_JSON_spec_mark_optional (
        GNUNET_JSON_spec_string ("fulfillment_url",
                                 &fulfillment_url),
        NULL),
      GNUNET_JSON_spec_end ()
    };
    enum GNUNET_GenericReturnValue res;

    res = TALER_MHD_parse_json_data (NULL,
                                     contract_terms,
                                     spec);
    if (GNUNET_OK != res)
    {
      GNUNET_break (0);
      return GNUNET_DB_STATUS_HARD_ERROR;
    }
  }

  check_connection (pg);
  {
    struct GNUNET_PQ_QueryParam params[] = {
      GNUNET_PQ_query_param_string (instance_id),
      GNUNET_PQ_query_param_string (order_id),
      TALER_PQ_query_param_json (contract_terms),
      GNUNET_PQ_query_param_auto_from_type (&h_contract_terms),
      GNUNET_PQ_query_param_timestamp (&pay_deadline),
      GNUNET_PQ_query_param_timestamp (&refund_deadline),
      (NULL == fulfillment_url)
      ? GNUNET_PQ_query_param_null ()
      : GNUNET_PQ_query_param_string (fulfillment_url),
      GNUNET_PQ_query_param_end
    };
    PREPARE (pg,
             "update_contract_terms",
             "UPDATE merchant_contract_terms SET"
             " contract_terms=$3"
             ",h_contract_terms=$4"
             ",pay_deadline=$5"
             ",refund_deadline=$6"
             ",fulfillment_url=$7"
             " WHERE order_id=$2"
             "   AND merchant_serial="
             "     (SELECT merchant_serial"
             "        FROM merchant_instances"
             "        WHERE merchant_id=$1)");
    return GNUNET_PQ_eval_prepared_non_select (pg->conn,
                                               "update_contract_terms",
                                               params);
  }
}