//-----------------------------------------------------------------------------
// $Id: QtRun/TimestepList.hpp 2017/02/15 14:49:12 philw $
//-----------------------------------------------------------------------------

#pragma once
#ifndef TimestepListINCLUDED
#define TimestepListINCLUDED

#ifndef DeltaTimeINCLUDED
#include "DeltaTime.hpp"
#endif

#include <QList>
#include <QString>
#include <QStringList>

class Timestep
{
  private:
    DeltaTime _step;
    QString _text;

  public:
    // constructors and destructor
    Timestep(const DeltaTime& step, const QString& text) :
        _step(step),
        _text(text)
    {
    }
    ~Timestep()                             { /* empty */ }

    // accessors
    const DeltaTime& step() const           { return _step; }
    const QString& text() const             { return _text; }
};

class TimestepList 
{
  private:
    // singleton instance
    static TimestepList* _instance;

    const Timestep _tstep1Hour;
    const Timestep _tstep6Hour;
    const Timestep _tstep12Hour;
    const Timestep _tstepDay;
    const Timestep _tstepWeek;
    const Timestep _tstepMonth;
    const Timestep _tstepYear;

    // Note [Phil, 10-2013, Rw 6.4, Gnats 5207]: We have never properly 
    // supported a weekly timestep; (they always started Tuesday night). 
    // For now, we will show the Weekly timestep item ONLY ON DEMAND,
    // e.g. from an old model which uses a Weekly run timestep, or for
    // a SeriesSlot which already has a weekly timestep.
  
    QList<Timestep> _timestepsStd;
    QList<Timestep> _timestepsWithWeekly;

  protected:
    // constructors and destructor
    TimestepList::TimestepList();
    virtual ~TimestepList();

  public:
    // singleton methods
    static const TimestepList& instance();
    static void deleteInstance();
    static bool isInstantiated();

    const QList<Timestep>& timesteps() const { return _timestepsStd; }
    const QList<Timestep>& timesteps (const DeltaTime& toBeUsedForStep) const;

    QStringList stringList() const;
    QStringList stringList(const DeltaTime& toBeUsedForStep) const;

    // return the timestep text
    QString text (const DeltaTime& step) const;

    // return the timestep matching the given text
    DeltaTime step (const QString& text) const;

  private:
    // no bodies provided
    TimestepList(const TimestepList&);
    TimestepList& operator= (const TimestepList&);
};

#endif
//--- (end TimestepList.hpp) ---