/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2017     Statoil ASA
// 
//  ResInsight 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 3 of the License, or
//  (at your option) any later version.
// 
//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html> 
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "RiuExpressionContextMenuManager.h"
#include "cafPdmChildArrayField.h"
#include "cafPdmObject.h"
#include "cafPdmField.h"
#include <QPointer>
#include <memory>

class RimSummaryCalculationVariable;
class QTextEdit;

//==================================================================================================
///  
///  
//==================================================================================================
class RimSummaryCalculation : public caf::PdmObject
{
    CAF_PDM_HEADER_INIT;

public:
    RimSummaryCalculation();

    void                            setDescription(const QString& description);
    QString                         description() const;

    bool                            isDirty() const;

    caf::PdmChildArrayFieldHandle*  variables();

    const std::vector<double>&      values() const;
    const std::vector<time_t>&      timeSteps() const;

    void                            setExpression(const QString& expr);
    QString                         expression() const;
    QString                         unitName() const;

    bool                            parseExpression();
    bool                            calculate();
    void                            updateDependentCurvesAndPlots();

    caf::PdmFieldHandle*    userDescriptionField() override;

    static QString                  findLeftHandSide(const QString& expresion);
    void                            attachToWidget();


private:
    void                    fieldChangedByUi(const caf::PdmFieldHandle* changedField, const QVariant& oldValue,
                                                     const QVariant& newValue) override;

    void                    defineEditorAttribute(const caf::PdmFieldHandle* field, QString uiConfigName, 
                                                          caf::PdmUiEditorAttribute* attribute) override;
    RimSummaryCalculationVariable*  findByName(const QString& name) const;
    RimSummaryCalculationVariable*  addVariable(const QString& name);
    void                            deleteVariable(RimSummaryCalculationVariable* calcVariable);

    QString                         buildCalculationName() const;

private:
    caf::PdmField<QString>                              m_description;
    caf::PdmField<QString>                              m_expression;
    caf::PdmField<QString>                              m_unit;

    caf::PdmChildArrayField<RimSummaryCalculationVariable*> m_variables;

    caf::PdmField<std::vector<double>>                  m_calculatedValues;
    caf::PdmField<std::vector<time_t>>                  m_timesteps;

    std::unique_ptr<RiuExpressionContextMenuManager>    m_exprContextMenuMgr;

    bool                                                m_isDirty;
};