/*
  This file is part of TALER
  (C) 2021 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 taler-merchant-httpd_private-delete-transfers-ID.c
 * @brief implement DELETE /transfers/$ID
 * @author Christian Grothoff
 */
#include "platform.h"
#include "taler-merchant-httpd_private-delete-transfers-ID.h"
#include <taler/taler_json_lib.h>


/**
 * Handle a DELETE "/private/transfers/$ID" request.
 *
 * @param rh context of the handler
 * @param connection the MHD connection to handle
 * @param[in,out] hc context with further information about the request
 * @return MHD result code
 */
MHD_RESULT
TMH_private_delete_transfers_ID (const struct TMH_RequestHandler *rh,
                                 struct MHD_Connection *connection,
                                 struct TMH_HandlerContext *hc)
{
  struct TMH_MerchantInstance *mi = hc->instance;
  enum GNUNET_DB_QueryStatus qs;
  unsigned long long serial;
  char dummy;

  GNUNET_assert (NULL != mi);
  if (1 !=
      sscanf (hc->infix,
              "%llu%c",
              &serial,
              &dummy))
  {
    return TALER_MHD_reply_with_error (connection,
                                       MHD_HTTP_BAD_REQUEST,
                                       TALER_EC_GENERIC_PARAMETER_MALFORMED,
                                       hc->infix);
  }
  qs = TMH_db->delete_transfer (TMH_db->cls,
                                mi->settings.id,
                                serial);
  switch (qs)
  {
  case GNUNET_DB_STATUS_HARD_ERROR:
    return TALER_MHD_reply_with_error (connection,
                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
                                       TALER_EC_GENERIC_DB_COMMIT_FAILED,
                                       NULL);
  case GNUNET_DB_STATUS_SOFT_ERROR:
    GNUNET_break (0);
    return TALER_MHD_reply_with_error (connection,
                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
                                       TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE,
                                       NULL);
  case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
    qs = TMH_db->check_transfer_exists (TMH_db->cls,
                                        mi->settings.id,
                                        serial);
    if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
      return TALER_MHD_reply_with_error (connection,
                                         MHD_HTTP_NOT_FOUND,
                                         TALER_EC_MERCHANT_GENERIC_TRANSFER_UNKNOWN,
                                         hc->infix);
    return TALER_MHD_reply_with_error (connection,
                                       MHD_HTTP_CONFLICT,
                                       TALER_EC_MERCHANT_PRIVATE_DELETE_TRANSFERS_ALREADY_CONFIRMED,
                                       hc->infix);
  case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
    return TALER_MHD_reply_static (connection,
                                   MHD_HTTP_NO_CONTENT,
                                   NULL,
                                   NULL,
                                   0);
  }
  GNUNET_assert (0);
  return MHD_NO;
}


/* end of taler-merchant-httpd_private-delete-transfers-ID.c */