/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2016-     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 "RigFlowDiagResultAddress.h"

#include "cafPdmPointer.h"
#include "cvfObject.h"

#include <map>
#include <string>
#include <vector>

class RimEclipseResultCase;
class RimFlowDiagSolution;

class RigFlowDiagTimeStepResult
{
public:
    explicit RigFlowDiagTimeStepResult( size_t activeCellCount );

    void setTracerTOF( const std::string&                       tracerName,
                       RigFlowDiagResultAddress::PhaseSelection phaseSelection,
                       const std::map<int, double>&             cellValues );
    void setTracerFraction( const std::string&                       tracerName,
                            RigFlowDiagResultAddress::PhaseSelection phaseSelection,
                            const std::map<int, double>&             cellValues );
    void setInjProdWellPairFlux( const std::string&               injectorTracerName,
                                 const std::string&               producerTracerName,
                                 const std::pair<double, double>& injProdFluxes );

    using Curve = std::pair<std::vector<double>, std::vector<double>>;

    // Used to "steal" the data from this one using swap
    std::map<RigFlowDiagResultAddress, std::vector<double>>& nativeResults() { return m_nativeResults; }
    std::map<std::pair<std::string, std::string>, std::pair<double, double>>& injProdWellPairFluxes()
    {
        return m_injProdWellPairFluxes;
    }

private:
    void addResult( const RigFlowDiagResultAddress& resAddr, const std::map<int, double>& cellValues );

    std::map<RigFlowDiagResultAddress, std::vector<double>>                  m_nativeResults;
    std::map<std::pair<std::string, std::string>, std::pair<double, double>> m_injProdWellPairFluxes;

    size_t m_activeCellCount;
};

class RigEclipseCaseData;
class RigOpmFlowDiagStaticData;

class RigFlowDiagSolverInterface : public cvf::Object
{
public:
    struct FlowCharacteristicsResultFrame
    {
        FlowCharacteristicsResultFrame();

        using Curve = std::pair<std::vector<double>, std::vector<double>>;

        Curve  m_storageCapFlowCapCurve;
        Curve  m_dimensionlessTimeSweepEfficiencyCurve;
        double m_lorenzCoefficient;
    };

    struct RelPermCurve
    {
        enum Ident
        {
            KRW,
            KRG,
            KROW,
            KROG,
            PCOW,
            PCOG
        };
        enum EpsMode
        {
            EPS_ON,
            EPS_OFF
        };

        Ident               ident;
        std::string         name;
        EpsMode             epsMode;
        std::vector<double> saturationVals;
        std::vector<double> yVals;
    };

    enum PvtCurveType
    {
        PVT_CT_FVF,
        PVT_CT_VISCOSITY
    };

    struct PvtCurve
    {
        enum Phase
        {
            OIL,
            GAS
        };
        enum Ident
        {
            Unknown,
            Bo,
            Bg,
            Visc_o,
            Visc_g
        };

        Ident               ident;
        Phase               phase;
        std::vector<double> pressureVals;
        std::vector<double> yVals;
        std::vector<double> mixRatVals;
    };

public:
    explicit RigFlowDiagSolverInterface( RimEclipseResultCase* eclipseCase );
    ~RigFlowDiagSolverInterface() override;

    RigFlowDiagTimeStepResult calculate( size_t                                   timeStepIdx,
                                         RigFlowDiagResultAddress::PhaseSelection phaseSelection,
                                         std::map<std::string, std::vector<int>>  injectorTracers,
                                         std::map<std::string, std::vector<int>>  producerTracers );

    FlowCharacteristicsResultFrame calculateFlowCharacteristics( const std::vector<double>* injector_tof,
                                                                 const std::vector<double>* producer_tof,
                                                                 const std::vector<size_t>& selected_cell_indices,
                                                                 double                     max_pv_fraction );

    std::vector<RelPermCurve> calculateRelPermCurves( size_t activeCellIndex );
    std::vector<PvtCurve>     calculatePvtCurves( PvtCurveType pvtCurveType, size_t activeCellIndex );
    bool                      calculatePvtDynamicPropertiesFvf( size_t activeCellIndex, double pressure, double rs, double rv, double* bo, double* bg );
    bool                      calculatePvtDynamicPropertiesViscosity( size_t  activeCellIndex,
                                                                      double  pressure,
                                                                      double  rs,
                                                                      double  rv,
                                                                      double* mu_o,
                                                                      double* mu_g );

private:
    std::wstring getInitFileName() const;
    bool         ensureStaticDataObjectInstanceCreated();
    void         assignPhaseCorrecedPORV( RigFlowDiagResultAddress::PhaseSelection phaseSelection, size_t timeStepIdx );
    void         reportRelPermCurveError( const QString& message );
    void         reportPvtCurveError( const QString& message );

    RimEclipseResultCase*              m_eclipseCase;
    cvf::ref<RigOpmFlowDiagStaticData> m_opmFlowDiagStaticData;

    int m_pvtCurveErrorCount;
    int m_relpermCurveErrorCount;
};