/*
  This file is part of TALER
  Copyright (C) 2018 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 bank-lib/testing_api_cmd_reject.c
 * @brief command to check the /reject API from the bank.
 * @author Marcello Stanisci
 */

#include "platform.h"
#include "taler_json_lib.h"
#include <gnunet/gnunet_curl_lib.h>
#include "taler_exchange_service.h"
#include "taler_testing_lib.h"
#include "taler_fakebank_lib.h"
#include "taler_bank_service.h"
#include "taler_fakebank_lib.h"

struct RejectState
{
  struct TALER_BANK_RejectHandle *rh;

  const char *deposit_reference;

  const char *bank_url;
};

/**
 * Callbacks of this type are used to serve the result
 * of asking the bank to reject an incoming wire transfer.
 *
 * @param cls closure
 * @param http_status HTTP response code, #MHD_HTTP_NO_CONTENT
 *        (204) for successful status request; #MHD_HTTP_NOT_FOUND
 *        if the rowid is unknown; 0 if the bank's reply is bogus
 *        (fails to follow the protocol),
 * @param ec detailed error code
 */
static void
reject_cb (void *cls,
           unsigned int http_status,
           enum TALER_ErrorCode ec)
{
  struct TALER_TESTING_Interpreter *is = cls;
  struct RejectState *rs = is->commands[is->ip].cls;

  rs->rh = NULL;
  if (MHD_HTTP_NO_CONTENT != http_status)
  {
    GNUNET_break (0);
    fprintf (stderr,
             "Unexpected response code %u:\n",
             http_status);
    TALER_TESTING_interpreter_fail (is);
    return;
  }
  TALER_TESTING_interpreter_next (is);
}

/**
 * Cleanup the state.
 *
 * @param cls closure, typically a #struct WireState.
 * @param cmd the command which is being cleaned up.
 */
void
reject_cleanup
  (void *cls,
   const struct TALER_TESTING_Command *cmd)
{
  struct RejectState *rs = cls;

  if (NULL != rs->rh)
  {
    TALER_LOG_WARNING ("/reject did not complete\n");
    TALER_BANK_reject_cancel (rs->rh);
  }

  GNUNET_free (rs);
}

/**
 * Run the command.
 *
 * @param cls closure, typically a #struct WireState.
 * @param cmd the command to execute, a /wire one.
 * @param is the interpreter state.
 */
void
reject_run (void *cls,
             const struct TALER_TESTING_Command *cmd,
             struct TALER_TESTING_Interpreter *is)
{
  struct RejectState *rs = cls;
  const struct TALER_TESTING_Command *deposit_cmd;
  const uint64_t *credit_account;
  const uint64_t *row_id;
  extern struct TALER_BANK_AuthenticationData AUTHS[];

  deposit_cmd = TALER_TESTING_interpreter_lookup_command
    (is, rs->deposit_reference);

  if (NULL == deposit_cmd)
    TALER_TESTING_FAIL (is);

  GNUNET_assert
    (GNUNET_OK == TALER_TESTING_GET_TRAIT_CREDIT_ACCOUNT
      (deposit_cmd, &credit_account));

  GNUNET_assert
    (GNUNET_OK == TALER_TESTING_GET_TRAIT_ROW_ID
      (deposit_cmd, &row_id));
  TALER_LOG_INFO ("Account %llu rejects deposit\n",
                  *credit_account);
  rs->rh = TALER_BANK_reject (is->ctx,
                              rs->bank_url,
                              &AUTHS[*credit_account -1],
                              *credit_account,
                              *row_id,
                              &reject_cb,
                              is);
  GNUNET_assert (NULL != rs->rh);
}


/**
 * @param cls closure
 * @param ret[out] result (could be anything)
 * @param trait name of the trait
 * @param selector more detailed information about which object
 *                 to return in case there were multiple generated
 *                 by the command
 * @return #GNUNET_OK on success
 */
static int
reject_traits (void *cls,
               void **ret,
               const char *trait,
               unsigned int index)
{
  struct RejectState *rs = cls;
  struct TALER_TESTING_Trait traits[] = {
    TALER_TESTING_make_trait_rejected (0, rs->deposit_reference),
    TALER_TESTING_trait_end ()
  };

  return TALER_TESTING_get_trait (traits,
                                  ret,
                                  trait,
                                  index);
}

/**
 * FIXME.
 */
struct TALER_TESTING_Command
TALER_TESTING_cmd_bank_reject (const char *label,
                               const char *bank_url,
                               const char *deposit_reference)
{
  struct RejectState *rs;
  struct TALER_TESTING_Command cmd;

  rs = GNUNET_new (struct RejectState);
  rs->bank_url = bank_url;
  rs->deposit_reference = deposit_reference;
  
  cmd.cls = rs;
  cmd.run = &reject_run;
  cmd.cleanup = &reject_cleanup;
  cmd.label = label;
  cmd.traits = &reject_traits;

  return cmd;

}

/* end of testing_api_cmd_reject.c */