/* -*-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 OSGEARTHSYMBOLOGY_RESOURCE_H
#define OSGEARTHSYMBOLOGY_RESOURCE_H 1

#include <osgEarth/Common>
#include <osgEarth/Tags>
#include <osgEarth/Config>
#include <osgEarth/Status>
#include <osgEarth/Threading>
#include <osg/Object>
#include <vector>

namespace osgEarth { namespace Util
{
    /**
     * Base class for a Resource, which is an external data element managed
     * by a ResourceLibrary.
     */
    class OSGEARTH_EXPORT Resource : public Taggable<osg::Object>
    {
    protected:
        Resource(const Resource& rhs,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY) {};
        Resource( const Config& config =Config() );

        const Status& getStatus() const { return _status; }

        /** dtor */
        virtual ~Resource() { }

        // META_Object specialization:
        virtual osg::Object* cloneType() const { return 0; } // cloneType() not appropriate
        virtual osg::Object* clone(const osg::CopyOp&) const { return 0; } // clone() not appropriate
        virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Resource*>(obj)!=NULL; }
        virtual const char* className() const { return "Resource"; }
        virtual const char* libraryName() const { return "osgEarth"; }

    public: // properties

        /** Readable name of the resource. */
        std::string& name() { return _name; }
        const std::string& name() const { return _name; }

    public: // serialization functions

        virtual Config getConfig() const;
        void mergeConfig( const Config& conf );

    protected:

        mutable std::mutex _mutex;
        mutable Status _status;

    private:
        std::string _name;
    };

    typedef std::vector< osg::ref_ptr<Resource> > ResourceVector;
} }

#endif // OSGEARTHSYMBOLOGY_SKIN_RESOURCE_H