/**
  * @RDE_HEADER@
  * State Machine handler for Exercise Object
  * $Id$
  * $HeadURL$
  * $Author$
  *
  * Created by Hanna E. Rathje, SLSE, 2015-10-12
  */

#pragma once

#include <QObject>
#include <QStateMachine>

#include <ExerciseManagement/exm_enums.hpp>

namespace NGL
{
  class INGLLogger;
}

namespace ExerciseManagement
{
  class ExerciseStateManager;
  class ExerciseStateBase;
  class ObjectExercise;

  class ExerciseStateMachine : public QObject
  {
      Q_OBJECT
    public:
      explicit ExerciseStateMachine(ExerciseManagement::ObjectExercise *objExe, QObject *parent = nullptr);
      ~ExerciseStateMachine();
      bool init();

      bool switchToState(ExerciseManagement::ExerciseState newExerciseState);
      ExerciseManagement::ExerciseState getCurrentState();

    Q_SIGNALS:
      void finished();
      void exerciseStateChanged(ExerciseManagement::ExerciseState exerciseState);

    public Q_SLOTS:
      void onEnteredState();

    private:
      ExerciseStateBase *getStateFromId(ExerciseManagement::ExerciseState exerciseState);
      int exerciseId() const;

      ExerciseStateManager *m_stateManager;
      QStateMachine        *m_stateMachine;
      QMap<ExerciseManagement::ExerciseState, ExerciseStateBase*> m_exerciseStates;

      ObjectExercise       *m_exercise;

      NGL::INGLLogger      &m_logger;
  };

} // namespace ExerciseManagement