// Copyright (c) 2012-2013 The Cryptonote developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#pragma once

#include <boost/uuid/uuid.hpp>
#include "serialization/keyvalue_serialization.h"
#include "misc_language.h"
#include "cryptonote_config.h"
#include "crypto/crypto.h"

namespace nodetool
{
  typedef boost::uuids::uuid uuid;
  typedef uint64_t peerid_type;

#pragma pack (push, 1)
  
  struct net_address
  {
    uint32_t ip;
    uint32_t port;
  };

  struct peerlist_entry
  {
    net_address adr;
    peerid_type id;
    time_t last_seen;
  };

  struct connection_entry
  {
    net_address adr;
    peerid_type id;
    bool is_income;
  };

#pragma pack(pop)

  inline
  bool operator < (const net_address& a, const net_address& b)
  {
    return  epee::misc_utils::is_less_as_pod(a, b);
  }

  inline
    bool operator == (const net_address& a, const net_address& b)
  {
    return  memcmp(&a, &b, sizeof(a)) == 0;
  }
  inline 
  std::string print_peerlist_to_string(const std::list<peerlist_entry>& pl)
  {
    time_t now_time = 0;
    time(&now_time);
    std::stringstream ss;
    ss << std::setfill ('0') << std::setw (8) << std::hex << std::noshowbase;
    BOOST_FOREACH(const peerlist_entry& pe, pl)
    {
      ss << pe.id << "\t" << epee::string_tools::get_ip_string_from_int32(pe.adr.ip) << ":" << boost::lexical_cast<std::string>(pe.adr.port) << " \tlast_seen: " << epee::misc_utils::get_time_interval_string(now_time - pe.last_seen) << std::endl;
    }
    return ss.str();
  }


  struct network_config
  {
    BEGIN_KV_SERIALIZE_MAP()
      KV_SERIALIZE(connections_count)
      KV_SERIALIZE(handshake_interval)
      KV_SERIALIZE(packet_max_size)
      KV_SERIALIZE(config_id)
    END_KV_SERIALIZE_MAP()

    uint32_t connections_count;
    uint32_t connection_timeout;
    uint32_t ping_connection_timeout;
    uint32_t handshake_interval;
    uint32_t packet_max_size;
    uint32_t config_id;
    uint32_t send_peerlist_sz;
  };

  struct basic_node_data
  {
    uuid network_id;                   
    uint64_t local_time;
    uint32_t my_port;
    peerid_type peer_id;

    BEGIN_KV_SERIALIZE_MAP()
      KV_SERIALIZE_VAL_POD_AS_BLOB(network_id)
      KV_SERIALIZE(peer_id)
      KV_SERIALIZE(local_time)
      KV_SERIALIZE(my_port)
    END_KV_SERIALIZE_MAP()
  };
  

#define P2P_COMMANDS_POOL_BASE 1000

  /************************************************************************/
  /*                                                                      */
  /************************************************************************/
  template<class t_playload_type>
	struct COMMAND_HANDSHAKE_T
	{
		const static int ID = P2P_COMMANDS_POOL_BASE + 1;

    struct request
    {
      basic_node_data node_data;
      t_playload_type payload_data;

      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(node_data)
        KV_SERIALIZE(payload_data)
      END_KV_SERIALIZE_MAP()
    };

    struct response
    {
      basic_node_data node_data;
      t_playload_type payload_data;
      std::list<peerlist_entry> local_peerlist; 

      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(node_data)
        KV_SERIALIZE(payload_data)
        KV_SERIALIZE_CONTAINER_POD_AS_BLOB(local_peerlist)
      END_KV_SERIALIZE_MAP()
    };
	};


  /************************************************************************/
  /*                                                                      */
  /************************************************************************/
  template<class t_playload_type>
  struct COMMAND_TIMED_SYNC_T
  {
    const static int ID = P2P_COMMANDS_POOL_BASE + 2;

    struct request
    {
      t_playload_type payload_data;
      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(payload_data)
      END_KV_SERIALIZE_MAP()
    };

    struct response
    {
      uint64_t local_time;
      t_playload_type payload_data;
      std::list<peerlist_entry> local_peerlist; 

      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(local_time)
        KV_SERIALIZE(payload_data)
        KV_SERIALIZE_CONTAINER_POD_AS_BLOB(local_peerlist)
      END_KV_SERIALIZE_MAP()
    };
  };

  /************************************************************************/
  /*                                                                      */
  /************************************************************************/

  struct COMMAND_PING
  {
    /*
      Used to make "callback" connection, to be sure that opponent node 
      have accessible connection point. Only other nodes can add peer to peerlist,
      and ONLY in case when peer has accepted connection and answered to ping.
    */
    const static int ID = P2P_COMMANDS_POOL_BASE + 3;

#define PING_OK_RESPONSE_STATUS_TEXT "OK"

    struct request
    {
      /*actually we don't need to send any real data*/

      BEGIN_KV_SERIALIZE_MAP()
      END_KV_SERIALIZE_MAP()
    };

    struct response
    {
      std::string status;
      peerid_type peer_id;

      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(status)
        KV_SERIALIZE(peer_id)
      END_KV_SERIALIZE_MAP()    
    };
  };

  
#ifdef ALLOW_DEBUG_COMMANDS
  //These commands are considered as insecure, and made in debug purposes for a limited lifetime. 
  //Anyone who feel unsafe with this commands can disable the ALLOW_GET_STAT_COMMAND macro.

  struct proof_of_trust
  {
    peerid_type peer_id;
    uint64_t    time;
    crypto::signature sign;

    BEGIN_KV_SERIALIZE_MAP()
      KV_SERIALIZE(peer_id)
      KV_SERIALIZE(time)        
      KV_SERIALIZE_VAL_POD_AS_BLOB(sign)  
    END_KV_SERIALIZE_MAP()    
  };


  template<class payload_stat_info>
  struct COMMAND_REQUEST_STAT_INFO_T
  {
    const static int ID = P2P_COMMANDS_POOL_BASE + 4;

    struct request
    {
      proof_of_trust tr;
      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(tr)
      END_KV_SERIALIZE_MAP()    
    };
    
    struct response
    {
      std::string version;
      std::string os_version;
      uint64_t connections_count;
      uint64_t incoming_connections_count;
      payload_stat_info payload_info;

      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(version)
        KV_SERIALIZE(os_version)
        KV_SERIALIZE(connections_count)
        KV_SERIALIZE(incoming_connections_count)
        KV_SERIALIZE(payload_info)
      END_KV_SERIALIZE_MAP()    
    };
  };


  /************************************************************************/
  /*                                                                      */
  /************************************************************************/
  struct COMMAND_REQUEST_NETWORK_STATE
  {
    const static int ID = P2P_COMMANDS_POOL_BASE + 5;

    struct request
    {
      proof_of_trust tr;
      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(tr)
      END_KV_SERIALIZE_MAP()    
    };

    struct response
    {
      std::list<peerlist_entry> local_peerlist_white; 
      std::list<peerlist_entry> local_peerlist_gray; 
      std::list<connection_entry> connections_list; 
      peerid_type my_id;
      uint64_t    local_time;
      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE_CONTAINER_POD_AS_BLOB(local_peerlist_white)
        KV_SERIALIZE_CONTAINER_POD_AS_BLOB(local_peerlist_gray)
        KV_SERIALIZE_CONTAINER_POD_AS_BLOB(connections_list)
        KV_SERIALIZE(my_id)
        KV_SERIALIZE(local_time)
      END_KV_SERIALIZE_MAP()    
    };
  };

  /************************************************************************/
  /*                                                                      */
  /************************************************************************/
  struct COMMAND_REQUEST_PEER_ID
  {
    const static int ID = P2P_COMMANDS_POOL_BASE + 6;

    struct request
    {
      BEGIN_KV_SERIALIZE_MAP()
      END_KV_SERIALIZE_MAP()    
    };

    struct response
    {
      peerid_type my_id;

      BEGIN_KV_SERIALIZE_MAP()
        KV_SERIALIZE(my_id)
      END_KV_SERIALIZE_MAP()    
    };
  };

#endif


}



