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/*                                                                                    */
/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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/*  Copyright (c) 2005-2020, Michele Bosi                                             */
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#ifndef LoadWriterVLX_INCLUDE_ONCE
#define LoadWriterVLX_INCLUDE_ONCE

#include <vlX/ClassWrapper.hpp>
#include <vlX/Registry.hpp>
#include <vlX/Serializer.hpp>
#include <vlX/Value.hpp>
#include <vlX/vlxutils.hpp>
#include <vlCore/LoadWriterManager.hpp>
#include <vlCore/ResourceDatabase.hpp>
#include <vlCore/DiskFile.hpp>

namespace vlX
{
  //-----------------------------------------------------------------------------

  VLX_EXPORT vl::ref<vl::ResourceDatabase> loadVLT(vl::VirtualFile* file);
  VLX_EXPORT vl::ref<vl::ResourceDatabase> loadVLT(const vl::String& path);
  VLX_EXPORT vl::ref<vl::ResourceDatabase> loadVLB(vl::VirtualFile* file);
  VLX_EXPORT vl::ref<vl::ResourceDatabase> loadVLB(const vl::String& path);
  VLX_EXPORT bool saveVLT(vl::VirtualFile* file, const vl::ResourceDatabase*);
  VLX_EXPORT bool saveVLT(const vl::String& file, const vl::ResourceDatabase*);
  VLX_EXPORT bool saveVLB(vl::VirtualFile* file, const vl::ResourceDatabase*);
  VLX_EXPORT bool saveVLB(const vl::String& file, const vl::ResourceDatabase*);
  VLX_EXPORT bool isVLT(vl::VirtualFile* file);
  VLX_EXPORT bool isVLT(const vl::String& file);
  VLX_EXPORT bool isVLB(vl::VirtualFile* file);
  VLX_EXPORT bool isVLB(const vl::String& file);

  //---------------------------------------------------------------------------
  // LoadWriterVLX
  //---------------------------------------------------------------------------
  /**
   * A vl::ResourceLoadWriter capable of reading Visualization Library's VLT and VLB files.
   */
  class LoadWriterVLX: public vl::ResourceLoadWriter
  {
    VL_INSTRUMENT_CLASS(vl::LoadWriterVLX, vl::ResourceLoadWriter)

  public:
    LoadWriterVLX(): vl::ResourceLoadWriter("|vlt|vlb|", "|vlt|vlb|") {}

    vl::ref<vl::ResourceDatabase> loadResource(const vl::String& path) const
    {
      if (isVLT(path))
        return loadVLT(path);
      else
      if (isVLB(path))
        return loadVLB(path);
      else
        return NULL;
    }

    vl::ref<vl::ResourceDatabase> loadResource(vl::VirtualFile* file) const
    {
      if (isVLT(file))
        return loadVLT(file);
      else
      if (isVLB(file))
        return loadVLB(file);
      else
        return NULL;
    }

    bool writeResource(const vl::String& path, vl::ResourceDatabase* res_db) const
    {
      if (path.extractFileExtension().toLowerCase() == "vlt")
        return saveVLT(path, res_db);
      else
      if (path.extractFileExtension().toLowerCase() == "vlb")
        return saveVLB(path, res_db);
      else
        return false;
    }

    bool writeResource(vl::VirtualFile* file, vl::ResourceDatabase* res_db) const
    {
      if (file->path().extractFileExtension().toLowerCase() == "vlt")
        return saveVLT(file, res_db);
      else
      if (file->path().extractFileExtension().toLowerCase() == "vlb")
        return saveVLB(file, res_db);
      else
        return false;
    }
  };
//-----------------------------------------------------------------------------
}

#endif