/*
      This file is part of GNUnet
      Copyright (C) 2021-2023 GNUnet e.V.

      GNUnet 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 of the License,
      or (at your option) any later version.

      GNUnet 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
      Affero General Public License for more details.

      You should have received a copy of the GNU Affero General Public License
      along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */

/**
 * @brief API for cmds working with core sub system provided by libgnunetcoretesting
 * @author t3sserakt
 */
#ifndef GNUNET_TESTING_CORE_LIB_H
#define GNUNET_TESTING_CORE_LIB_H


#include "gnunet_util_lib.h"
#include "gnunet_testing_lib.h"


/**
 * Struct to store information needed in callbacks.
 */
// FIXME: breaks naming conventions
struct GNUNET_TESTING_ConnectPeersState
{
  /**
   * Receive callback
   */
  struct GNUNET_MQ_MessageHandler *handlers;

  /**
   * A map with struct GNUNET_MQ_Handle values for each peer this peer
   * is connected to.
   */
  struct GNUNET_CONTAINER_MultiShortmap *connected_peers_map;

  /**
   * Handle for transport.
   */
  struct GNUNET_TRANSPORT_ApplicationHandle *ah;

  /**
   * Core handle.
   */
  struct GNUNET_TRANSPORT_CoreHandle *th;

  /**
   * Context for our asynchronous completion.
   */
  struct GNUNET_TESTING_AsyncContext ac;

  /**
   * The testing system of this node.
   */
  const struct GNUNET_TESTING_System *tl_system;

  // Label of the cmd which started the test system.
  const char *create_label;

  /**
   * Number globally identifying the node.
   *
   */
  uint32_t num;

  /**
   * Label of the cmd to start a peer.
   *
   */
  const char *start_peer_label;

  /**
   * The topology of the test setup.
   */
  struct GNUNET_TESTING_NetjailTopology *topology;

  /**
   * Connections to other peers.
   */
  struct GNUNET_TESTING_NodeConnection *node_connections_head;

  struct GNUNET_TESTING_Interpreter *is;

  /**
   * Number of connections.
   */
  unsigned int con_num;

  /**
   * Number of additional connects this cmd will wait for not triggered by this cmd.
   */
  unsigned int additional_connects;

  /**
 * Number of connections we already have a notification for.
 */
  unsigned int con_num_notified;

  /**
   * Number of additional connects this cmd will wait for not triggered by this cmd we already have a notification for.
   */
  unsigned int additional_connects_notified;

  /**
   * Flag indicating, whether the command is waiting for peers to connect that are configured to connect.
   */
  unsigned int wait_for_connect;
};


/**
 * FIXME: document properly!
 * Create command
 *
 * @param label name for command
 * @param start_peer_label Label of the cmd to start a peer.
 * @param create_label Label of the cmd which started the test system.
 * @param num Number globally identifying the node.
 * @param topology The topology for the test setup.
 * @param additional_connects Number of additional connects this cmd will wait for not triggered by this cmd.
 * @return command.
 */
struct GNUNET_TESTING_Command
GNUNET_CORE_cmd_connect_peers (
  const char *label,
  const char *start_peer_label,
  const char *create_label,
  uint32_t num,
  struct GNUNET_TESTING_NetjailTopology *topology,
  unsigned int additional_connects,
  unsigned int wait_for_connect,
  struct GNUNET_MQ_MessageHandler *handlers);


/**
 * Call #op on all simple traits.
 */
#define GNUNET_CORE_TESTING_SIMPLE_TRAITS(op, prefix)   \
        op (prefix, connect_peer_state, const struct \
            GNUNET_TESTING_ConnectPeersState)

GNUNET_CORE_TESTING_SIMPLE_TRAITS (GNUNET_TESTING_MAKE_DECL_SIMPLE_TRAIT,
                                   GNUNET_CORE_TESTING)


#endif
