/**
  * Telegrams at WsTelegram
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Christian Ehrlicher, NLE, 2019-09-18
  */

#pragma once

#include <cstdint>
#include <exception>
#include <QJsonObject>
#include <QString>

namespace HighLevelArchitecture
{

class JsonException final : public std::exception
{
public:
  JsonException(const QJsonObject &obj, const QString &key);
  const char *what() const noexcept override { return m_what.data(); }
private:
  QJsonObject m_obj;
  QString m_key;
  QByteArray m_what;
};
template <typename T>
struct Constraints;


//
// Enumerations
//
enum class FinalAttackHeadingMode
{
  None = 0,
  HeadingOnly = 1,
  HeadingWithSector = 2,
};


//
// Structs
//
// ------------------------------------------------------------------
struct GeoPosition2D
{
  double lat = 0; // in degree, WGS-84
  double lon = 0; // in degree, WGS-84

  static GeoPosition2D fromJson(const QJsonObject &obj);
  QJsonObject toJson() const;
};

// ------------------------------------------------------------------
struct GeoPosition3D final : public GeoPosition2D
{
  double height = 0;  // above MSL

  static GeoPosition3D fromJson(const QJsonObject &obj);
  QJsonObject toJson() const;
};

// ------------------------------------------------------------------
struct Area2D
{
  GeoPosition2D centerPoint;
  int width{100};
  int height{100};

  static Area2D fromJson(const QJsonObject &obj);
  QJsonObject toJson() const;
};


// ------------------------------------------------------------------
struct WsTelegramBase
{
  int     objectId  = 0;
  QString name;
  double  timestamp = 0; // in msec since epoche // for debugging purpose

  virtual ~WsTelegramBase() = default;
  virtual QJsonObject toJson() const = 0;
  virtual QString type() const = 0;
};

// ------------------------------------------------------------------

template <typename T>
struct WsTelegramBaseTmpl : WsTelegramBase
{
  QString type() const override final { return Constraints<T>::type(); }
};

// ------------------------------------------------------------------
struct WsTelegramPosition final : public WsTelegramBaseTmpl<WsTelegramPosition>
{
  GeoPosition3D position;

  // conversion functions
  static WsTelegramPosition fromJson(const QJsonObject &obj);
  QJsonObject toJson() const override;
};
template <> struct Constraints<WsTelegramPosition>
{
  static QString type() { return QStringLiteral("WsTelegramPosition"); }
};


// ------------------------------------------------------------------
struct WsTelegramRemoveAesObject final : public WsTelegramBaseTmpl<WsTelegramRemoveAesObject>
{
  // conversion functions
  static WsTelegramRemoveAesObject fromJson(const QJsonObject &obj);
  QJsonObject toJson() const override;
};
template <> struct Constraints<WsTelegramRemoveAesObject>
{
  static QString type() { return QStringLiteral("WsTelegramRemoveAesObject"); }
};


// ------------------------------------------------------------------
struct WsTelegramMineFieldObject final : public WsTelegramBaseTmpl<WsTelegramMineFieldObject>
{
  int           activationTime{0};
  bool          isDeactivated{false};
  int           duration{0};
  Area2D        area2D;      // define center and optional width, height

  // conversion functions
  static WsTelegramMineFieldObject fromJson(const QJsonObject &obj);
  QJsonObject toJson() const override;
};
template <> struct Constraints<WsTelegramMineFieldObject>
{
  static QString type() { return QStringLiteral("WsTelegramMineFieldObject"); }
};



} // namespace HighLevelArchitecture