/*
  This file is part of TALER
  Copyright (C) 2020 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 lib/testing_api_cmd_merchant_get_order.c
 * @brief command to test GET /private/orders/$ORDER_ID.
 * @author Jonathan Buchanan
 */
#include "platform.h"
#include <taler/taler_exchange_service.h>
#include <taler/taler_testing_lib.h>
#include "taler_merchant_service.h"
#include "taler_merchant_testing_lib.h"


/**
 * State for a GET /private/orders/$ORDER_ID CMD.
 */
struct MerchantGetOrderState
{
  /**
   * The merchant base URL.
   */
  const char *merchant_url;

  /**
   * Expected HTTP response code for this CMD.
   */
  unsigned int http_status;

  /**
   * The handle to the current GET /private/orders/$ORDER_ID request.
   */
  struct TALER_MERCHANT_OrderMerchantGetHandle *ogh;

  /**
   * The interpreter state.
   */
  struct TALER_TESTING_Interpreter *is;

  /**
   * Reference to a command that created an order.
   */
  const char *order_reference;
};


/**
 * Callback to process a GET /orders/$ID request
 *
 * @param cls closure
 * @param hr HTTP response details
 * @param osr order status response details (on success)
 */
static void
merchant_get_order_cb (
  void *cls,
  const struct TALER_MERCHANT_HttpResponse *hr,
  const struct TALER_MERCHANT_OrderStatusResponse *osr)
{
  /* FIXME, deeper checks should be implemented here. */
  struct MerchantGetOrderState *gos = cls;
  const struct TALER_TESTING_Command *order_cmd;

  order_cmd = TALER_TESTING_interpreter_lookup_command (
    gos->is,
    gos->order_reference);

  gos->ogh = NULL;
  if (gos->http_status != hr->http_status)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Unexpected response code %u (%d) to command %s\n",
                hr->http_status,
                (int) hr->ec,
                TALER_TESTING_interpreter_get_current_label (gos->is));
    TALER_TESTING_interpreter_fail (gos->is);
    return;
  }
  switch (hr->http_status)
  {
  case MHD_HTTP_OK:
    // FIXME: use gts->tip_reference here to
    // check if the data returned matches that from the POST / PATCH
    break;
  default:
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "Unhandled HTTP status.\n");
  }
  TALER_TESTING_interpreter_next (gos->is);
}


/**
 * Run the "GET order" CMD.
 *
 * @param cls closure.
 * @param cmd command being run now.
 * @param is interpreter state.
 */
static void
merchant_get_order_run (void *cls,
                        const struct TALER_TESTING_Command *cmd,
                        struct TALER_TESTING_Interpreter *is)
{
  struct MerchantGetOrderState *gos = cls;
  const struct TALER_TESTING_Command *order_cmd;
  const char *order_id;
  const struct GNUNET_HashCode *h_contract;

  order_cmd = TALER_TESTING_interpreter_lookup_command (
    is,
    gos->order_reference);

  if (GNUNET_OK !=
      TALER_TESTING_get_trait_order_id (order_cmd,
                                        0,
                                        &order_id))
    TALER_TESTING_FAIL (is);

  if (GNUNET_OK !=
      TALER_TESTING_get_trait_h_contract_terms (order_cmd,
                                                0,
                                                &h_contract))
    TALER_TESTING_FAIL (is);

  gos->is = is;
  gos->ogh = TALER_MERCHANT_merchant_order_get (is->ctx,
                                                gos->merchant_url,
                                                order_id,
                                                NULL,
                                                false,
                                                GNUNET_TIME_UNIT_ZERO,
                                                &merchant_get_order_cb,
                                                gos);
}


/**
 * Free the state of a "GET order" CMD, and possibly
 * cancel a pending operation thereof.
 *
 * @param cls closure.
 * @param cmd command being run.
 */
static void
merchant_get_order_cleanup (void *cls,
                            const struct TALER_TESTING_Command *cmd)
{
  struct MerchantGetOrderState *gos = cls;

  if (NULL != gos->ogh)
  {
    TALER_LOG_WARNING ("Get tip operation did not complete\n");
    TALER_MERCHANT_merchant_order_get_cancel (gos->ogh);
  }
  GNUNET_free (gos);
}


/**
 * Define a GET /private/tips/$TIP_ID CMD.
 *
 * @param label the command label
 * @param merchant_url base URL of the merchant which will
 *        serve the request.
 * @param order_reference reference to a command that created an order.
 * @param http_status expected HTTP response code for the request.
 */
struct TALER_TESTING_Command
TALER_TESTING_cmd_merchant_get_order (const char *label,
                                      const char *merchant_url,
                                      const char *order_reference,
                                      unsigned int http_status)
{
  struct MerchantGetOrderState *gos;

  gos = GNUNET_new (struct MerchantGetOrderState);
  gos->merchant_url = merchant_url;
  gos->order_reference = order_reference;
  gos->http_status = http_status;
  {
    struct TALER_TESTING_Command cmd = {
      .cls = gos,
      .label = label,
      .run = &merchant_get_order_run,
      .cleanup = &merchant_get_order_cleanup
    };

    return cmd;
  }
}


/* end of testing_api_cmd_merchant_get_order.c */