//
// Created by parallels on 19/03/24.
//


#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include <gnunet/gnunet_json_lib.h>
#include <jansson.h>
#include <microhttpd.h>
#include <pthread.h>
#include "taler_json_lib.h"
#include "taler_mhd_lib.h"
#include "taler-auditor-httpd.h"
#include "taler-auditor-httpd_amount-arithmetic-inconsistency-get.h"

/**
 * Add deposit confirmation to the list.
 *
 * @param[in,out] cls a `json_t *` array to extend
 * @param serial_id location of the @a dc in the database
 * @param dc struct of inconsistencies
 * @return #GNUNET_OK to continue to iterate, #GNUNET_SYSERR to stop iterating
 */
static enum GNUNET_GenericReturnValue
add_amount_arithmetic_inconsistency (void *cls,
                                     uint64_t serial_id,
                                     const struct
                                     TALER_AUDITORDB_AmountArithmeticInconsistency
                                     *dc)
{
  json_t *list = cls;
  json_t *obj;


  obj = GNUNET_JSON_PACK (

    GNUNET_JSON_pack_data_auto ("operation", &dc->operation),
    TALER_JSON_pack_amount ("exchange_amount", &dc->exchange_amount),
    TALER_JSON_pack_amount ("auditor_amount", &dc->auditor_amount),
    GNUNET_JSON_pack_bool ("profitable", dc->profitable)

    );
  GNUNET_break (0 ==
                json_array_append_new (list,
                                       obj));


  return GNUNET_OK;
}


/**
 *
 * @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
 * @return MHD result code
 */
MHD_RESULT
TAH_AMOUNT_ARITHMETIC_INCONSISTENCY_handler_get (struct TAH_RequestHandler *rh,
                                                 struct MHD_Connection *
                                                 connection,
                                                 void **connection_cls,
                                                 const char *upload_data,
                                                 size_t *upload_data_size,
                                                 const char *const args[])
{
  json_t *ja;
  enum GNUNET_DB_QueryStatus qs;

  (void) rh;
  (void) connection_cls;
  (void) upload_data;
  (void) upload_data_size;
  if (GNUNET_SYSERR ==
      TAH_plugin->preflight (TAH_plugin->cls))
  {
    GNUNET_break (0);
    return TALER_MHD_reply_with_error (connection,
                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
                                       TALER_EC_GENERIC_DB_SETUP_FAILED,
                                       NULL);
  }
  ja = json_array ();
  GNUNET_break (NULL != ja);

  int64_t limit = -20;
  uint64_t offset;

  TALER_MHD_parse_request_snumber (connection,
                                   "limit",
                                   &limit);

  if (limit < 0)
    offset = INT64_MAX;
  else
    offset = 0;

  TALER_MHD_parse_request_number (connection,
                                  "offset",
                                  &offset);

  bool return_suppressed = false;

  struct GNUNET_JSON_Specification spec[] = {
    GNUNET_JSON_spec_bool ("return_suppressed", &return_suppressed),
    GNUNET_JSON_spec_end ()
  };


  // read the input json
  json_t *json_in;
  {
    enum GNUNET_GenericReturnValue res;

    res = TALER_MHD_parse_post_json (connection,
                                     connection_cls,
                                     upload_data,
                                     upload_data_size,
                                     &json_in);
    if (GNUNET_SYSERR == res)
      return MHD_NO;
    if ((GNUNET_NO == res) ||
        (NULL == json_in))
      return MHD_YES;
    res = TALER_MHD_parse_json_data (connection,
                                     json_in,
                                     spec);
    if (GNUNET_SYSERR == res)
    {
      json_decref (json_in);
      return MHD_NO;             /* hard failure */
    }
    if (GNUNET_NO == res)
    {
      json_decref (json_in);
      return MHD_YES;             /* failure */
    }
  }


  qs = TAH_plugin->get_amount_arithmetic_inconsistency (
    TAH_plugin->cls,
    limit,
    offset,
    return_suppressed,
    &add_amount_arithmetic_inconsistency,
    ja);

  if (0 > qs)
  {
    GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR == qs);
    json_decref (ja);
    TALER_LOG_WARNING (
      "Failed to handle GET /amount-arithmetic-inconsistency in database\n");
    return TALER_MHD_reply_with_error (connection,
                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
                                       TALER_EC_GENERIC_DB_FETCH_FAILED,
                                       "amount-arithmetic-inconsistency");
  }
  return TALER_MHD_REPLY_JSON_PACK (
    connection,
    MHD_HTTP_OK,
    GNUNET_JSON_pack_array_steal ("amount-arithmetic-inconsistency",
                                  ja));
}