/*
  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_exchanges.h"
#include "taler-merchant-httpd_tip-query.h"
#include "taler-merchant-httpd_tip-reserve-helper.h"


/**
 * Taler protocol version in the format CURRENT:REVISION:AGE
 * as used by GNU libtool.  See
 * https://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
 *
 * Please be very careful when updating and follow
 * https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html#Updating-version-info
 * precisely.  Note that this version has NOTHING to do with the
 * release version, and the format is NOT the same that semantic
 * versioning uses either.
 *
 * When changing this version, you likely want to also update
 * #MERCHANT_PROTOCOL_CURRENT and #MERCHANT_PROTOCOL_AGE in
 * TBD.c! // FIXME: update comment once libtalermerchant looks at version!
 */
#define MERCHANT_PROTOCOL_VERSION "0:0:0"


/**
 * 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
 * @param mi merchant backend instance, never NULL
 * @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,
                   struct MerchantInstance *mi)
{
  (void) rh;
  (void) connection_cls;
  (void) upload_data;
  (void) upload_data_size;
  (void) mi;
  return TALER_MHD_reply_json_pack (connection,
                                    MHD_HTTP_OK,
                                    "{s:s, s:s}",
                                    "currency", TMH_currency,
                                    "version", MERCHANT_PROTOCOL_VERSION);
}


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