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/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
 * Copyright 2008-2010 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 OSGEARTH_REGISTRY
#define OSGEARTH_REGISTRY 1

#include <osgEarth/Common>
#include <osgEarth/Caching>
#include <osgEarth/Capabilities>
#include <osgEarth/Profile>
#include <osgEarth/TaskService>
#include <OpenThreads/ReentrantMutex>
#include <OpenThreads/ScopedLock>
#include <osg/Referenced>
#include <osgDB/ReaderWriter>

#define GDAL_SCOPED_LOCK \
    OpenThreads::ScopedLock<OpenThreads::ReentrantMutex> _slock( osgEarth::Registry::instance()->getGDALMutex() )\
    

namespace osgEarth
{    
    class ShaderFactory;

    class OSGEARTH_EXPORT Registry : public osg::Referenced
    {
    public:
        static Registry* instance(bool erase = false);

        const Profile* getNamedProfile( const std::string& name ) const;

        const Profile* getGlobalGeodeticProfile() const;

        const Profile* getGlobalMercatorProfile() const;

        const Profile* getCubeProfile() const;

        OpenThreads::ReentrantMutex& getGDALMutex();

        Cache* getCacheOverride() const;
        void setCacheOverride( Cache* cacheOverride );

        void addMimeTypeExtensionMapping(const std::string fromMimeType, const std::string toExt);

        osgDB::ReaderWriter* getReaderWriterForMimeType(const std::string& mimeType);

        bool isBlacklisted(const std::string &filename);

        void blacklist(const std::string &filename);

        unsigned int getNumBlacklistedFilenames();

        void clearBlacklist();

        const VerticalSpatialReference* getDefaultVSRS() const;

        const Capabilities& getCapabilities() const;

        ShaderFactory* getShaderFactory() const;
        void setShaderFactory( ShaderFactory* lib );

        TaskServiceManager* getTaskServiceManager() {
            return _taskServiceManager.get(); }

        UID createUID();

        void setCacheDirectory( const std::string& dir );

        const std::string& getCacheDirectory() const;

        const osgDB::Options* getDefaultOptions() const { return _defaultOptions.get(); }

        osgDB::Options* cloneOrCreateOptions( const osgDB::Options* options =0L ) const;

    protected:
        virtual ~Registry();
        Registry();


        void destruct();

        OpenThreads::ReentrantMutex _gdal_mutex;
        bool _gdal_registered;

        osg::ref_ptr<const Profile> _global_geodetic_profile;
        osg::ref_ptr<const Profile> _global_mercator_profile;
        osg::ref_ptr<const Profile> _cube_profile;

        OpenThreads::Mutex _regMutex;        
        int _numGdalMutexGets;
        
        typedef std::map< std::string, std::string> MimeTypeExtensionMap;
        // maps mime-types to extensions.
        MimeTypeExtensionMap _mimeTypeExtMap;

                osg::ref_ptr<Cache> _cacheOverride;

        typedef std::set<std::string> StringSet;
        StringSet _blacklistedFilenames;
        OpenThreads::Mutex _blacklistMutex;

        osg::ref_ptr<const VerticalSpatialReference> _defaultVSRS;

        osg::ref_ptr<ShaderFactory> _shaderLib;

        osg::ref_ptr<TaskServiceManager> _taskServiceManager;

        int _uidGen;

        osg::ref_ptr< Capabilities > _caps;
        void initCapabilities();

        osg::ref_ptr<osgDB::Options> _defaultOptions;
    };
}

#endif //OSGEARTH_REGISTRY