/*
  This file is part of TALER
  (C) 2019 Taler Systems SA

  TALER is free software; you can redistribute it and/or modify it under the
  terms of the GNU Affero 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 backend/taler-merchant-httpd_config.c
 * @brief implement API for querying configuration data of the backend
 * @author Florian Dold
 */
#include "platform.h"
#include <jansson.h>
#include <taler/taler_util.h>
#include <taler/taler_json_lib.h>
#include "taler-merchant-httpd.h"
#include "taler-merchant-httpd_mhd.h"
#include "taler-merchant-httpd_parsing.h"
#include "taler-merchant-httpd_exchanges.h"
#include "taler-merchant-httpd_responses.h"
#include "taler-merchant-httpd_tip-query.h"
#include "taler-merchant-httpd_tip-reserve-helper.h"


/**
 * Handle a "/config" request.
 *
 * @param rh context of the handler
 * @param connection the MHD connection to handle
 * @param[in,out] connection_cls the connection's closure (can be updated)
 * @param upload_data upload data
 * @param[in,out] upload_data_size number of bytes (left) in @a upload_data
 * @return MHD result code
 */
int
MH_handler_config (struct TMH_RequestHandler *rh,
                   struct MHD_Connection *connection,
                   void **connection_cls,
                   const char *upload_data,
                   size_t *upload_data_size)
{
  int ret;
  const char *instance_str;
  struct MerchantInstance *mi;

  instance_str = MHD_lookup_connection_value (connection,
                                              MHD_GET_ARGUMENT_KIND,
                                              "instance");
  if (NULL == instance_str)
    instance_str = "default";

  mi = TMH_lookup_instance (instance_str);

  if (NULL == mi)
    return TMH_RESPONSE_reply_bad_request (connection,
                                           TALER_EC_CHECK_PAYMENT_INSTANCE_UNKNOWN,
                                           "merchant instance unknown");

  ret = TMH_RESPONSE_reply_json_pack (connection,
                                      MHD_HTTP_OK,
                                      "{s:s}",
                                      "currency", TMH_currency);

  return ret;
}

/* end of taler-merchant-httpd_config.c */