/////////////////////////////////////////////////////////////////////////////////
//
//  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 <QString>
#include <QTextStream>

#include <vector>

//==================================================================================================
//
//==================================================================================================
enum RifEclipseOutputTableLineType
{
    COMMENT,
    CONTENTS,
    HORIZONTAL_LINE
};

//==================================================================================================
//
//==================================================================================================
enum RifEclipseOutputTableAlignment
{
    LEFT,
    RIGHT
};

//==================================================================================================
//
//==================================================================================================
enum RifEclipseOutputTableDoubleFormat
{
    RIF_SCIENTIFIC,
    RIF_FLOAT,
    RIF_CONSISE
};

//==================================================================================================
//
//==================================================================================================
struct RifEclipseOutputTableLine
{
    RifEclipseOutputTableLineType lineType;
    std::vector<QString>          data;
    bool                          appendTextSet;
    QString                       appendText;
};

//==================================================================================================
//
//==================================================================================================
struct RifEclipseOutputTableDoubleFormatting
{
    RifEclipseOutputTableDoubleFormatting( RifEclipseOutputTableDoubleFormat format = RIF_FLOAT, int precision = 5 )
        : format( format )
        , precision( precision )
    {
    }

    RifEclipseOutputTableDoubleFormat format;
    int                               precision;
};

//==================================================================================================
//
//==================================================================================================
struct RifEclipseOutputTableColumn
{
    RifEclipseOutputTableColumn(
        const QString&                        title,
        RifEclipseOutputTableDoubleFormatting doubleFormat = RifEclipseOutputTableDoubleFormatting(),
        RifEclipseOutputTableAlignment        alignment    = LEFT,
        int                                   width        = -1 )
        : title( title )
        , doubleFormat( doubleFormat )
        , alignment( alignment )
        , width( width )
    {
    }

    QString                               title;
    RifEclipseOutputTableDoubleFormatting doubleFormat;
    RifEclipseOutputTableAlignment        alignment;
    int                                   width;
};

//==================================================================================================
//
//==================================================================================================
class RifEclipseDataTableFormatter
{
public:
    RifEclipseDataTableFormatter( QTextStream& out );
    RifEclipseDataTableFormatter( const RifEclipseDataTableFormatter& rhs );

    virtual ~RifEclipseDataTableFormatter();

    int     columnSpacing() const;
    void    setColumnSpacing( int spacing );
    QString tableRowPrependText() const;
    QString tableRowAppendText() const;
    void    setTableRowPrependText( const QString& text );
    void    setTableRowLineAppendText( const QString& text );
    QString commentPrefix() const;
    void    setCommentPrefix( const QString& commentPrefix );
    void    setUnlimitedDataRowWidth();
    int     maxDataRowWidth() const;

    RifEclipseDataTableFormatter& keyword( const QString& keyword );
    RifEclipseDataTableFormatter& header( std::vector<RifEclipseOutputTableColumn> tableHeader );
    RifEclipseDataTableFormatter& add( const QString& str );
    RifEclipseDataTableFormatter& add( double num );
    RifEclipseDataTableFormatter& add( int num );
    RifEclipseDataTableFormatter& add( size_t num );
    RifEclipseDataTableFormatter& addOneBasedCellIndex( size_t zeroBasedIndex );
    RifEclipseDataTableFormatter& addValueOrDefaultMarker( double value, double defaultValue );
    RifEclipseDataTableFormatter& comment( const QString& str );
    RifEclipseDataTableFormatter& addHorizontalLine( const QChar& str );
    void                          rowCompleted();
    void                          rowCompleted( const QString& appendText );
    void                          tableCompleted();
    void                          tableCompleted( const QString& appendText, bool appendNewline );

    int tableWidth() const;

protected:
    friend class RifCsvDataTableFormatter;

    int measure( const QString str );
    int measure( double num, RifEclipseOutputTableDoubleFormatting doubleFormat );
    int measure( int num );
    int measure( size_t num );

    static QString format( double num, RifEclipseOutputTableDoubleFormatting doubleFormat );
    static QString format( int num );
    static QString format( size_t num );
    QString        formatColumn( const QString str, size_t columnIndex ) const;

    void outputBuffer();
    void outputComment( RifEclipseOutputTableLine& comment );
    void outputHorizontalLine( RifEclipseOutputTableLine& comment );

    bool isAllHeadersEmpty( const std::vector<RifEclipseOutputTableColumn>& headers );

private:
    std::vector<RifEclipseOutputTableColumn> m_columns;
    std::vector<RifEclipseOutputTableLine>   m_buffer;
    std::vector<QString>                     m_lineBuffer;
    QTextStream&                             m_out;
    int                                      m_colSpacing;
    QString                                  m_tableRowPrependText;
    QString                                  m_tableRowAppendText;
    QString                                  m_commentPrefix;
    int                                      m_maxDataRowWidth;
};