/*
  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 testing_api_cmd_patch_instance.c
 * @brief command to test PATCH /instance
 * @author Christian Grothoff
 */
#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 of a "PATCH /instance" CMD.
 */
struct PatchInstanceState
{

  /**
   * Handle for a "PATCH /instance/$ID" request.
   */
  struct TALER_MERCHANT_InstancePatchHandle *iph;

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

  /**
   * Base URL of the merchant serving the request.
   */
  const char *merchant_url;

  /**
   * ID of the instance to run PATCH for.
   */
  const char *instance_id;

  /**
   * Length of the @payto_uris array
   */
  unsigned int payto_uris_length;

  /**
   * Array of payto URIs.
   */
  const char **payto_uris;

  /**
   * Name of the instance.
   */
  const char *name;

  /**
   * Address to use.
   */
  json_t *address;

  /**
   * Jurisdiction to use.
   */
  json_t *jurisdiction;

  /**
   * Wire fee to use.
   */
  struct TALER_Amount default_max_wire_fee;

  /**
   * Amortization to use.
   */
  uint32_t default_wire_fee_amortization;

  /**
   * Deposit fee ceiling to use.
   */
  struct TALER_Amount default_max_deposit_fee;

  /**
   * Wire transfer delay to use.
   */
  struct GNUNET_TIME_Relative default_wire_transfer_delay;

  /**
   * Order validity default duration to use.
   */
  struct GNUNET_TIME_Relative default_pay_delay;

  /**
   * Expected HTTP response code.
   */
  unsigned int http_status;

};


/**
 * Callback for a PATCH /instances/$ID operation.
 *
 * @param cls closure for this function
 * @param hr response being processed
 */
static void
patch_instance_cb (void *cls,
                   const struct TALER_MERCHANT_HttpResponse *hr)
{
  struct PatchInstanceState *pis = cls;

  pis->iph = NULL;
  if (pis->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 (pis->is));
    TALER_TESTING_interpreter_fail (pis->is);
    return;
  }
  switch (hr->http_status)
  {
  case MHD_HTTP_OK:
    break;
  // FIXME: add other legitimate states here...
  default:
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "Unhandled HTTP status.\n");
  }
  TALER_TESTING_interpreter_next (pis->is);
}


/**
 * Run the "PATCH /instances/$ID" CMD.
 *
 *
 * @param cls closure.
 * @param cmd command being run now.
 * @param is interpreter state.
 */
static void
patch_instance_run (void *cls,
                    const struct TALER_TESTING_Command *cmd,
                    struct TALER_TESTING_Interpreter *is)
{
  struct PatchInstanceState *pis = cls;

  pis->is = is;
  pis->iph = TALER_MERCHANT_instance_patch (is->ctx,
                                            pis->merchant_url,
                                            pis->instance_id,
                                            pis->payto_uris_length,
                                            pis->payto_uris,
                                            pis->name,
                                            pis->address,
                                            pis->jurisdiction,
                                            &pis->default_max_wire_fee,
                                            pis->default_wire_fee_amortization,
                                            &pis->default_max_deposit_fee,
                                            pis->default_wire_transfer_delay,
                                            pis->default_pay_delay,
                                            &patch_instance_cb,
                                            pis);
  GNUNET_assert (NULL != pis->iph);
}


/**
 * Offers information from the PATCH /instances CMD state to other
 * commands.
 *
 * @param cls closure
 * @param[out] ret result (could be anything)
 * @param trait name of the trait
 * @param index index number of the object to extract.
 * @return #GNUNET_OK on success
 */
static int
patch_instance_traits (void *cls,
                       const void **ret,
                       const char *trait,
                       unsigned int index)
{
  struct PatchInstanceState *pis = cls;
  #define NUM_TRAITS (pis->payto_uris_length) + 11
  struct TALER_TESTING_Trait traits[NUM_TRAITS];
  traits[0] =
    TALER_TESTING_make_trait_string (0, pis->name);
  traits[1] =
    TALER_TESTING_make_trait_string (1, pis->instance_id);
  traits[2] =
    TALER_TESTING_make_trait_json (0, pis->address);
  traits[3] =
    TALER_TESTING_make_trait_json (1, pis->jurisdiction);
  traits[4] =
    TALER_TESTING_make_trait_amount_obj (0, &pis->default_max_wire_fee);
  traits[5] =
    TALER_TESTING_make_trait_uint32 (0, &pis->default_wire_fee_amortization);
  traits[6] =
    TALER_TESTING_make_trait_amount_obj (1, &pis->default_max_deposit_fee);
  traits[7] =
    TALER_TESTING_make_trait_relative_time (0,
                                            &pis->default_wire_transfer_delay);
  traits[8] =
    TALER_TESTING_make_trait_relative_time (1, &pis->default_pay_delay);
  traits[9] =
    TALER_TESTING_make_trait_uint32 (1, &pis->payto_uris_length);
  traits[NUM_TRAITS - 1] =
    TALER_TESTING_trait_end ();
  for (unsigned int i = 0; i < pis->payto_uris_length; ++i)
  {
    traits[10 + i] =
      TALER_TESTING_make_trait_string (2 + i, pis->payto_uris[i]);
  }

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


/**
 * Free the state of a "PATCH /instances/$ID" CMD, and possibly
 * cancel a pending operation thereof.
 *
 * @param cls closure.
 * @param cmd command being run.
 */
static void
patch_instance_cleanup (void *cls,
                        const struct TALER_TESTING_Command *cmd)
{
  struct PatchInstanceState *pis = cls;

  if (NULL != pis->iph)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "PATCH /instance/$ID operation did not complete\n");
    TALER_MERCHANT_instance_patch_cancel (pis->iph);
  }
  json_decref (pis->address);
  json_decref (pis->jurisdiction);
  GNUNET_free (pis->payto_uris);
  GNUNET_free (pis);
}


struct TALER_TESTING_Command
TALER_TESTING_cmd_merchant_patch_instance (
  const char *label,
  const char *merchant_url,
  const char *instance_id,
  unsigned int payto_uris_length,
  const char *payto_uris[],
  const char *name,
  json_t *address,
  json_t *jurisdiction,
  const char *default_max_wire_fee,
  uint32_t default_wire_fee_amortization,
  const char *default_max_deposit_fee,
  struct GNUNET_TIME_Relative default_wire_transfer_delay,
  struct GNUNET_TIME_Relative default_pay_delay,
  unsigned int http_status)
{
  struct PatchInstanceState *pis;

  pis = GNUNET_new (struct PatchInstanceState);
  pis->merchant_url = merchant_url;
  pis->instance_id = instance_id;
  pis->http_status = http_status;
  pis->payto_uris_length = payto_uris_length;
  pis->payto_uris = GNUNET_new_array (payto_uris_length,
                                      const char *);
  memcpy (pis->payto_uris,
          payto_uris,
          sizeof (const char *) * payto_uris_length);
  pis->name = name;
  pis->address = address; /* ownership transfer! */
  pis->jurisdiction = jurisdiction; /* ownership transfer! */
  GNUNET_assert (GNUNET_OK ==
                 TALER_string_to_amount (default_max_wire_fee,
                                         &pis->default_max_wire_fee));
  pis->default_wire_fee_amortization = default_wire_fee_amortization;
  GNUNET_assert (GNUNET_OK ==
                 TALER_string_to_amount (default_max_deposit_fee,
                                         &pis->default_max_deposit_fee));
  pis->default_wire_transfer_delay = default_wire_transfer_delay;
  pis->default_pay_delay = default_pay_delay;
  {
    struct TALER_TESTING_Command cmd = {
      .cls = pis,
      .label = label,
      .run = &patch_instance_run,
      .cleanup = &patch_instance_cleanup,
      .traits = &patch_instance_traits
    };

    return cmd;
  }
}


/* end of testing_api_cmd_patch_instance.c */