/*
   This file is part of TALER
   Copyright (C) 2022, 2026 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 src/backenddb/insert_exchange_keys.c
 * @brief Implementation of the insert_exchange_keys function for Postgres
 * @author Christian Grothoff
 */
#include "platform.h"
#include <taler/taler_pq_lib.h>
#include "merchant-database/insert_exchange_keys.h"
#include "helper.h"


enum GNUNET_DB_QueryStatus
TALER_MERCHANTDB_insert_exchange_keys (
  struct TALER_MERCHANTDB_PostgresContext *pg,
  const char *exchange_url,
  const struct TALER_EXCHANGE_Keys *keys,
  struct GNUNET_TIME_Absolute first_retry,
  uint32_t http_status,
  enum TALER_ErrorCode ec)
{
  uint32_t ec32 = (uint32_t) ec;
  json_t *jkeys = (NULL == keys)
    ? NULL
    : TALER_EXCHANGE_keys_to_json (keys);
  struct GNUNET_TIME_Timestamp ldid = (NULL == keys)
    ? GNUNET_TIME_UNIT_ZERO_TS
    : keys->last_denom_issue_date;
  struct GNUNET_PQ_QueryParam params[] = {
    keys == NULL
    ? GNUNET_PQ_query_param_null ()
    : TALER_PQ_query_param_json (jkeys),
    GNUNET_PQ_query_param_absolute_time (&first_retry),
    GNUNET_PQ_query_param_timestamp (&ldid),
    GNUNET_PQ_query_param_string (exchange_url),
    GNUNET_PQ_query_param_uint32 (&http_status),
    GNUNET_PQ_query_param_uint32 (&ec32),
    GNUNET_PQ_query_param_end
  };
  enum GNUNET_DB_QueryStatus qs;

  // FIXME: use a stored procedure instead!
  PREPARE (pg,
           "insert_exchange_keys",
           "INSERT INTO merchant.merchant_exchange_keys"
           "(keys_json"
           ",first_retry"
           ",expiration_time"
           ",exchange_url"
           ",exchange_http_status"
           ",exchange_ec_code"
           ") VALUES ("
           " $1::TEXT::JSONB, $2, $3, $4, $5, $6"
           ");");
  PREPARE (pg,
           "insert_exchange_keys_update",
           "UPDATE merchant.merchant_exchange_keys SET"
           /* preserve old keys if new ones failed to download */
           " keys_json=COALESCE($1::TEXT::JSONB,keys_json)"
           ",first_retry=$2"
           ",expiration_time=$3"
           ",exchange_http_status=$5"
           ",exchange_ec_code=$6"
           " WHERE"
           " exchange_url=$4;");
  qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
                                           "insert_exchange_keys_update",
                                           params);
  if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
    qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
                                             "insert_exchange_keys",
                                             params);
  json_decref (jkeys);
  return qs;
}
