comm_bridge.h

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/**************************************************************************
 *   Copyright (C) 2022 by David Register, Alec Leamas                     *
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,  USA.         *
 **************************************************************************/
 
#ifndef COMM_BRIDGE_H
#define COMM_BRIDGE_H
 
#include <memory>
#include <string>
#include <unordered_map>
 
#include <wx/event.h>
#include <wx/timer.h>
 
#include "model/comm_decoder.h"
#include "model/comm_navmsg.h"
#include "model/nmea_log.h"
 
using N0183MsgPtr = std::shared_ptr<const Nmea0183Msg>;
using N2000MsgPtr = std::shared_ptr<const Nmea2000Msg>;
using SignalKMsgPtr = std::shared_ptr<const SignalkMsg>;
using NavMsgPtr = std::shared_ptr<const NavMsg>;
 
using PriorityMap = std::unordered_map<std::string, int>;
 
struct PriorityContainer {
  std::string prio_class;
  int active_priority;
  std::string active_source;
  std::string active_identifier;
  int active_source_address;
  time_t recent_active_time;
  PriorityContainer(const std::string& cls, int prio = 0)
      : prio_class(cls),
        active_priority(prio),
        active_source_address(-1),
        recent_active_time(0) {}
};
 
struct Watchdogs {
  int position_watchdog;
  int variation_watchdog;
  int heading_watchdog;
  int velocity_watchdog;
  int satellite_watchdog;
  Watchdogs()
      : position_watchdog(0),
        variation_watchdog(0),
        heading_watchdog(0),
        velocity_watchdog(0),
        satellite_watchdog(0) {}
};
 
struct BridgeLogCallbacks {
  std::function<bool()> log_is_active;
  std::function<void(const Logline&)> log_message;
  BridgeLogCallbacks()
      : log_is_active([]() { return false; }),
        log_message([](const Logline&) {}) {}
};
 
class CommBridge : public wxEvtHandler {
public:
  CommBridge();
 
  ~CommBridge() override;
 
  bool Initialize();
 
  bool HandleN0183_AIVDO(const N0183MsgPtr& n0183_msg);
 
  bool EvalPriority(const NavMsgPtr& msg, PriorityContainer& active_priority,
                    PriorityMap& priority_map);
 
  std::vector<std::string> GetPriorityMaps() const;
 
  PriorityContainer& GetPriorityContainer(const std::string& category);
 
  void UpdateAndApplyMaps(const std::vector<std::string>& new_maps);
 
  bool LoadConfig();
 
  bool SaveConfig() const;
 
private:
  PriorityContainer active_priority_position;
  PriorityContainer active_priority_velocity;
  PriorityContainer active_priority_heading;
  PriorityContainer active_priority_variation;
  PriorityContainer active_priority_satellites;
  PriorityContainer active_priority_void;
 
  PriorityMap priority_map_position;
  PriorityMap priority_map_velocity;
  PriorityMap priority_map_heading;
  PriorityMap priority_map_variation;
  PriorityMap priority_map_satellites;
 
  //  comm event listeners
  ObsListener m_n2k_129029_lstnr;
  ObsListener m_n2k_129025_lstnr;
  ObsListener m_n2k_129026_lstnr;
  ObsListener m_n2k_127250_lstnr;
  ObsListener m_n2k_129540_lstnr;
 
  ObsListener m_n0183_rmc_lstnr;
  ObsListener m_n0183_ths_lstnr;
  ObsListener m_n0183_hdt_lstnr;
  ObsListener m_n0183_hdg_lstnr;
  ObsListener m_n0183_hdm_lstnr;
  ObsListener m_n0183_vtg_lstnr;
  ObsListener m_n0183_gsv_lstnr;
  ObsListener m_n0183_gga_lstnr;
  ObsListener m_n0183_gll_lstnr;
  ObsListener m_n0183_aivdo_lstnr;
 
  ObsListener m_signal_k_lstnr;
 
  ObsListener m_driver_change_lstnr;
 
  CommDecoder m_decoder;
 
  bool HandleN0183_GGA(const N0183MsgPtr& n0183_msg);
  bool HandleN0183_GLL(const N0183MsgPtr& n0183_msg);
 
  int m_n_log_watchdog_period;
 
  BridgeLogCallbacks m_log_callbacks;
  int m_last_position_priority;
  std::string m_last_position_source;
  Watchdogs m_watchdogs;
  wxTimer m_watchdog_timer;
 
  void InitCommListeners();
 
  void PresetWatchdogs();
  void MakeHDTFromHDM();
 
  void ApplyPriorityMaps(const std::vector<std::string>& new_maps);
  void ClearPriorityMaps();
  void PresetPriorityContainers();
  void OnDriverStateChange();
 
  void OnWatchdogTimer();
  ;
 
  bool HandleN2K_129029(const N2000MsgPtr& n2k_msg);
  bool HandleN2K_129025(const N2000MsgPtr& n2k_msg);
  bool HandleN2K_129026(const N2000MsgPtr& n2k_msg);
  bool HandleN2K_127250(const N2000MsgPtr& n2k_msg);
  bool HandleN2K_129540(const N2000MsgPtr& n2k_msg);
 
  bool HandleN0183_RMC(const N0183MsgPtr& n0183_msg);
  bool HandleN0183_THS(const N0183MsgPtr& n0183_msg);
  bool HandleN0183_HDT(const N0183MsgPtr& n0183_msg);
  bool HandleN0183_HDG(const N0183MsgPtr& n0183_msg);
  bool HandleN0183_HDM(const N0183MsgPtr& n0183_msg);
  bool HandleN0183_VTG(const N0183MsgPtr& n0183_msg);
  bool HandleN0183_GSV(const N0183MsgPtr& n0183_msg);
 
  bool HandleSignalK(const SignalKMsgPtr& sK_msg);
};
 
#endif  // COMM_BRIDGE_H