/**
  * @RDE_HEADER@
  * ExerciseStateManager / Manages the state of an exercise
  * $Id$
  * $HeadURL$
  * $Author$
  */

#pragma once

#include <QObject>
#include <functional>
#include <QMap>

#include <ExerciseManagement/exm_enums.hpp>

namespace NGL
{
  class INGLLogger;
}

namespace ExerciseManagement
{
  class ObjectExercise;
  class ExerciseStateManager : public QObject
  {
      Q_OBJECT

    public:
      explicit ExerciseStateManager(ObjectExercise* objExe, QObject *parent = nullptr);

      bool triggerSwitchState(ExerciseManagement::ExerciseState state);

      bool isValid(ExerciseManagement::ExerciseState state) const;
      void setCurrent(ExerciseManagement::ExerciseState state);
      void setInitial(ExerciseManagement::ExerciseState state);

      static QString toString(ExerciseManagement::ExerciseState state);
    Q_SIGNALS:
      void stateUnknown();
      void stateCreated();
      void stateStarted();
      void statePaused();
      void stateStopped();
      void stateTerminated();
      void stateFalse();

    private:
      void setStateInternal(ExerciseManagement::ExerciseState state);
      int exerciseId() const;

      QMap<ExerciseManagement::ExerciseState, std::function<void()> > m_stateSignals;

      ExerciseManagement::ExerciseState m_exerciseState;
      ObjectExercise                   *m_exercise;
      NGL::INGLLogger                  &m_logger;
  };

} // namespace ExerciseManagement