/*

Open Asset Import Library (assimp)

----------------------------------------------------------------------

Copyright (c) 2006-2025, assimp team

All rights reserved.

Redistribution and use of this software in source and binary forms,

with or without modification, are permitted provided that the

following conditions are met:

* Redistributions of source code must retain the above

copyright notice, this list of conditions and the

following disclaimer.

* Redistributions in binary form must reproduce the above

copyright notice, this list of conditions and the

following disclaimer in the documentation and/or other

materials provided with the distribution.

* Neither the name of the assimp team, nor the names of its

contributors may be used to endorse or promote products

derived from this software without specific prior

written permission of the assimp team.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

----------------------------------------------------------------------

*/

#pragma once

#ifndef AI_GLTFIMPORTER_H_INC

#define AI_GLTFIMPORTER_H_INC

#include <assimp/BaseImporter.h>

#include <assimp/DefaultIOSystem.h>

struct aiNode;

namespace glTF {

    class Asset;

}

namespace Assimp {

/**

 * Load the glTF format.

 * https://github.com/KhronosGroup/glTF/tree/master/specification

 */

class glTFImporter : public BaseImporter {

public:

    glTFImporter();

    ~glTFImporter() override = default;

    bool CanRead(const std::string &pFile, IOSystem *pIOHandler, bool checkSig) const override;

protected:

    const aiImporterDesc *GetInfo() const override;

    void InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) override;

private:

    void ImportEmbeddedTextures(glTF::Asset &a);

    void ImportMaterials(glTF::Asset &a);

    void ImportMeshes(glTF::Asset &a);

    void ImportCameras(glTF::Asset &a);

    void ImportLights(glTF::Asset &a);

    void ImportNodes(glTF::Asset &a);

    void ImportCommonMetadata(glTF::Asset &a);

private:

    std::vector<unsigned int> meshOffsets;

    std::vector<int> embeddedTexIdxs;

    aiScene *mScene;

};

} // namespace Assimp

#endif // AI_GLTFIMPORTER_H_INC