/******************************************************************************
 *
 * Project:  OpenGIS Simple Features for OpenDRIVE
 * Purpose:  Implementation of RoadObject layer.
 * Author:   Michael Scholz, German Aerospace Center (DLR)
 *           Gülsen Bardak, German Aerospace Center (DLR)
 *
 ******************************************************************************
 * Copyright 2024 German Aerospace Center (DLR), Institute of Transportation Systems
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/

#include "ogr_api.h"
#include "ogr_geometry.h"
#include "ogr_xodr.h"

OGRXODRLayerRoadObject::OGRXODRLayerRoadObject(
    const RoadElements &xodrRoadElements, const std::string &proj4Defn)
    : OGRXODRLayer(xodrRoadElements, proj4Defn)
{
    m_poFeatureDefn =
        std::make_unique<OGRFeatureDefn>(FEATURE_CLASS_NAME.c_str());
    m_poFeatureDefn->Reference();
    SetDescription(FEATURE_CLASS_NAME.c_str());

    m_poFeatureDefn->SetGeomType(wkbTINZ);
    if (!m_oSRS.IsEmpty())
        m_poFeatureDefn->GetGeomFieldDefn(0)->SetSpatialRef(&m_oSRS);

    OGRFieldDefn oFieldObjectID("ObjectID", OFTString);
    m_poFeatureDefn->AddFieldDefn(&oFieldObjectID);

    OGRFieldDefn oFieldRoadID("RoadID", OFTString);
    m_poFeatureDefn->AddFieldDefn(&oFieldRoadID);

    OGRFieldDefn oFieldType("Type", OFTString);
    m_poFeatureDefn->AddFieldDefn(&oFieldType);

    OGRFieldDefn oFieldObjectName("Name", OFTString);
    m_poFeatureDefn->AddFieldDefn(&oFieldObjectName);
}

int OGRXODRLayerRoadObject::TestCapability(const char *pszCap)
{
    int result = FALSE;

    if (EQUAL(pszCap, OLCZGeometries))
        result = TRUE;

    return result;
}

OGRFeature *OGRXODRLayerRoadObject::GetNextRawFeature()
{
    std::unique_ptr<OGRFeature> feature;

    if (m_roadObjectIter != m_roadElements.roadObjects.end())
    {
        feature = std::make_unique<OGRFeature>(m_poFeatureDefn.get());

        odr::RoadObject roadObject = *m_roadObjectIter;
        odr::Mesh3D roadObjectMesh = *m_roadObjectMeshesIter;

        // Populate geometry field
        // In contrast to other XODR layers, dissolving of RoadObject TINs is not an option, because faces of "true" 3D objects might collapse.
        std::unique_ptr<OGRTriangulatedSurface> tin =
            triangulateSurface(roadObjectMesh);
        if (!m_oSRS.IsEmpty())
            tin->assignSpatialReference(&m_oSRS);
        feature->SetGeometryDirectly(tin.release());

        // Populate other fields
        feature->SetField(m_poFeatureDefn->GetFieldIndex("ObjectID"),
                          roadObject.id.c_str());
        feature->SetField(m_poFeatureDefn->GetFieldIndex("RoadID"),
                          roadObject.road_id.c_str());
        feature->SetField(m_poFeatureDefn->GetFieldIndex("Type"),
                          roadObject.type.c_str());
        feature->SetField(m_poFeatureDefn->GetFieldIndex("Name"),
                          roadObject.name.c_str());
        feature->SetFID(m_nNextFID++);

        ++m_roadObjectIter;
        ++m_roadObjectMeshesIter;
    }

    if (feature)
    {
        return feature.release();
    }
    else
    {
        // End of features for the given layer reached.
        return nullptr;
    }
}