/* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 * Copyright (C) 2015  HUBzero Foundation, LLC
 *
 * Author: Leif Delgass <ldelgass@purdue.edu>
 */
#ifndef GEOVIS_UTIL_H
#define GEOVIS_UTIL_H

#include <cstring>
#include <string>

#include <osg/NodeVisitor>
#include <osgEarthFeatures/FeatureIndex>
#include <osgEarthFeatures/FeatureSourceIndexNode>

namespace GeoVis {

class FindFeatureSourceIndexNodeVisitor : public osg::NodeVisitor {
public:
    FindFeatureSourceIndexNodeVisitor() :
        osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
        source(NULL)
    {
    }

    virtual ~FindFeatureSourceIndexNodeVisitor() {}

    virtual void apply(osg::Node& node)
    {
        if (strcmp(node.className(), "FeatureSourceIndexNode") == 0) {
            osgEarth::Features::FeatureSourceIndexNode *fsin = dynamic_cast<osgEarth::Features::FeatureSourceIndexNode *>(&node);
            osgEarth::Features::FeatureSourceIndex *index = fsin->getIndex();
            if (source == NULL || index->getFeatureSource() == source) {
                nodes.push_back(fsin);
            }
        }
        traverse(node);
    }

    osgEarth::Features::FeatureSource *source;
    std::vector<osgEarth::Features::FeatureSourceIndexNode *> nodes;
};

extern std::string loadCSVLayer(const char *filename, const char *longitudeColName = "longitude", const char *latitudeColName = "latitude");

}

#endif