/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
 * Copyright 2020 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
#ifndef OSGEARTHFEATURES_TFS_PACKAGER_H
#define OSGEARTHFEATURES_TFS_PACKAGER_H 1

#include <osgEarth/Common>
#include <osgEarth/FeatureSource>
#include <osgEarth/CropFilter>


namespace osgEarth { namespace Contrib 
{
    using namespace osgEarth;

    /**
     * Utility that grids up feature data into a tiled json format.
     */
    class OSGEARTH_EXPORT TFSPackager
    {
    public:
        TFSPackager();

        /**
         * The first level in the quadtree that tiles will be added.          
         */
        unsigned int getFirstLevel() const { return _firstLevel;}
        void setFirstLevel( unsigned int value ) { _firstLevel = value;}

        /**
         * The maximum level in the quadtree that tiles can be added.
         */
        unsigned int getMaxLevel() const { return _maxLevel;}
        void setMaxLevel( unsigned int value) { _maxLevel = value;}

        /**
         * The maximum number of features that should be added to a tile before moving onto the next level.
         * Once the max level is reached, features will simply be added to it no matter how many features are in the tile.
         */
        unsigned int getMaxFeatures() const { return _maxFeatures;}
        void setMaxFeatures( unsigned int value ) { _maxFeatures = value;}

        /**
         * The query to run on the FeatureSource.
         */
        const Query& getQuery() const { return _query;}
        void setQuery( const Query& query) { _query = query;}

        /**
         * The cropping method to use when processing the features
         * If the cropping method is set to METHOD_CROP features can be added to multiple tiles.
         */
        CropFilter::Method getMethod() const { return _method;}
        void setMethod( CropFilter::Method method) { _method = method;}

        /**
         * The SRS to use for the output dataset.  If not set the SRS of the FeatureSource will be used.
         * Can be any string that will result in a valid osgEarth::SpatialReference (epsg codes, wkt, proj4).
         */
        const std::string& getDestSRS() const { return _destSRSString;}
        void setDestSRS(const std::string& srs ) { _destSRSString = srs; }

        /**
         * A GeoExtent to use for LOD Level 0, in the SRS of the input dataset.  If not set the
         * GeoExtent of the FeatureSource will be used
         */
        const GeoExtent getLod0Extent() const { return _customExtent; }
        void setLod0Extent(const GeoExtent& extent) { _customExtent = extent; }

        /**
         * Package the given feature source
         * @param features
         *     The feature source to package
         * @param destination
         *     The destination directory
         * @param layername
         *     The name of the layer
         * @param description
         *     Optional description that will be written to the metadata document
         */
        void package( FeatureSource* features, const std::string& destination, const std::string& layername, const std::string& description = "" );




    private:
        unsigned int _firstLevel;
        unsigned int _maxLevel;
        unsigned int _maxFeatures;
        Query _query;
        CropFilter::Method _method;
        std::string _destSRSString;
        osg::ref_ptr< const SpatialReference > _srs;
        GeoExtent _customExtent;
    };

} } // namespace osgEarth::Tools

#endif