/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2018-     Equinor 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.
//
/////////////////////////////////////////////////////////////////////////////////

#include "RimPolylinesFromFileAnnotation.h"

#include "RiaLogging.h"
#include "RigPolyLinesData.h"
#include "RimAnnotationCollection.h"
#include "RimAnnotationLineAppearance.h"

#include "cafPdmUiFilePathEditor.h"

#include <QFile>
#include <QFileInfo>

CAF_PDM_SOURCE_INIT( RimPolylinesFromFileAnnotation, "PolylinesFromFileAnnotation" );

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RimPolylinesFromFileAnnotation::RimPolylinesFromFileAnnotation()
{
    CAF_PDM_InitObject( "PolyLines Annotation", ":/PolylinesFromFile16x16.png", "", "" );

    CAF_PDM_InitFieldNoDefault( &m_polyLinesFileName, "PolyLineFilePath", "File", "", "", "" );
    CAF_PDM_InitField( &m_userDescription, "PolyLineDescription", QString( "" ), "Name", "", "", "" );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RimPolylinesFromFileAnnotation::~RimPolylinesFromFileAnnotation()
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimPolylinesFromFileAnnotation::setFileName( const QString& fileName )
{
    m_polyLinesFileName = fileName;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
QString RimPolylinesFromFileAnnotation::fileName() const
{
    return m_polyLinesFileName().path();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimPolylinesFromFileAnnotation::readPolyLinesFile( QString* errorMessage )
{
    QFile dataFile( m_polyLinesFileName().path() );

    if ( !dataFile.open( QFile::ReadOnly ) )
    {
        if ( errorMessage ) ( *errorMessage ) += "Could not open the File: " + ( m_polyLinesFileName().path() ) + "\n";
        return;
    }

    m_polyLinesData = new RigPolyLinesData;

    std::vector<std::vector<cvf::Vec3d>> polylines( 1 );

    QTextStream stream( &dataFile );
    int         lineNumber = 1;
    while ( !stream.atEnd() )
    {
        QString     line            = stream.readLine();
        QStringList commentLineSegs = line.split( "#", QString::KeepEmptyParts );
        if ( commentLineSegs.empty() ) continue; // Empty line

        QStringList lineSegs = commentLineSegs[0].split( QRegExp( "\\s+" ), QString::SkipEmptyParts );

        if ( lineSegs.empty() ) continue; // No data

        if ( lineSegs.size() != 3 )
        {
            if ( errorMessage )
                ( *errorMessage ) += "Unexpected number of words on line: " + QString::number( lineNumber ) + "\n";
            continue;
        }

        {
            bool   isNumberParsingOk = true;
            bool   isOk              = true;
            double x                 = lineSegs[0].toDouble( &isOk );
            isNumberParsingOk &= isOk;
            double y = lineSegs[1].toDouble( &isOk );
            isNumberParsingOk &= isOk;
            double z = lineSegs[2].toDouble( &isOk );
            isNumberParsingOk &= isOk;

            if ( !isNumberParsingOk )
            {
                if ( errorMessage )
                    ( *errorMessage ) += "Could not read the point at line: " + QString::number( lineNumber ) + "\n";
                continue;
            }

            if ( x == 999.0 && y == 999.0 && z == 999.0 ) // New PolyLine
            {
                polylines.push_back( std::vector<cvf::Vec3d>() );
                continue;
            }

            cvf::Vec3d point( x, y, -z );
            polylines.back().push_back( point );
        }

        ++lineNumber;
    }

    if ( polylines.back().empty() )
    {
        polylines.pop_back();
    }

    m_polyLinesData->setPolyLines( polylines );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
cvf::ref<RigPolyLinesData> RimPolylinesFromFileAnnotation::polyLinesData()
{
    return m_polyLinesData;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
bool RimPolylinesFromFileAnnotation::isEmpty()
{
    if ( m_polyLinesData.isNull() ) return true;

    for ( const std::vector<cvf::Vec3d>& line : m_polyLinesData->polyLines() )
    {
        if ( !line.empty() ) return false;
    }

    return true;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimPolylinesFromFileAnnotation::setDescriptionFromFileName()
{
    QFileInfo fileInfo( m_polyLinesFileName().path() );
    m_userDescription = fileInfo.fileName();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimPolylinesFromFileAnnotation::defineUiOrdering( QString uiConfigName, caf::PdmUiOrdering& uiOrdering )
{
    appearance()->setLineFieldsHidden( !m_showLines() );
    appearance()->setSphereFieldsHidden( !m_showSpheres() );

    uiOrdering.add( &m_polyLinesFileName );

    auto appearanceGroup = uiOrdering.addNewGroup( "Appearance" );
    appearanceGroup->add( &m_closePolyline );
    appearanceGroup->add( &m_showLines );
    appearanceGroup->add( &m_showSpheres );

    appearance()->uiOrdering( uiConfigName, *appearanceGroup );

    uiOrdering.skipRemainingFields( true );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimPolylinesFromFileAnnotation::fieldChangedByUi( const caf::PdmFieldHandle* changedField,
                                                       const QVariant&            oldValue,
                                                       const QVariant&            newValue )
{
    if ( changedField == &m_polyLinesFileName )
    {
        QString errorMessage;
        this->readPolyLinesFile( &errorMessage );
        if ( !errorMessage.isEmpty() )
        {
            QString totalError = "\nError in: " + this->fileName() + "\n\t" + errorMessage;
            RiaLogging::errorInMessageBox( nullptr, "Import Polylines", totalError );
        }
    }
    else if ( changedField == &m_showLines )
    {
        appearance()->setLineFieldsHidden( !m_showLines() );
    }
    else if ( changedField == &m_showSpheres )
    {
        appearance()->setSphereFieldsHidden( !m_showSpheres() );
    }

    RimAnnotationCollection* annColl = nullptr;
    this->firstAncestorOrThisOfTypeAsserted( annColl );

    annColl->scheduleRedrawOfRelevantViews();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
caf::PdmFieldHandle* RimPolylinesFromFileAnnotation::userDescriptionField()
{
    return &m_userDescription;
}