/*

Open Asset Import Library (assimp)

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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:

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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

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

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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,

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*/

#ifndef AI_GLTF2IMPORTER_H_INC

#define AI_GLTF2IMPORTER_H_INC

#include <assimp/BaseImporter.h>

#include "glTF2Asset.h"

struct aiNode;

namespace glTF2 {

    class Asset;

}

namespace Assimp {

/**

 * Load the glTF2 format.

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

 */

class glTF2Importer : public BaseImporter {

public:

    glTF2Importer();

    ~glTF2Importer() 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;

    void SetupProperties(const Importer *pImp) override;

private:

    void ImportEmbeddedTextures(glTF2::Asset &a);

    void ImportMaterials(glTF2::Asset &a);

    void ImportMeshes(glTF2::Asset &a);

    void ImportCameras(glTF2::Asset &a);

    void ImportLights(glTF2::Asset &a);

    void ImportNodes(glTF2::Asset &a);

    void ImportAnimations(glTF2::Asset &a);

    void ImportCommonMetadata(glTF2::Asset &a);

    aiNode *ImportNode(glTF2::Asset &r, glTF2::Ref<glTF2::Node> &ptr);

private:

    std::vector<unsigned int> meshOffsets;

    std::vector<int> mEmbeddedTexIdxs;

    std::vector<std::vector<unsigned int>> mVertexRemappingTables; // for each converted aiMesh in the scene, it stores a list of vertices that are actually used

    aiScene *mScene;

    /// An instance of rapidjson::IRemoteSchemaDocumentProvider

    void *mSchemaDocumentProvider = nullptr;

};

} // namespace Assimp

#endif // AI_GLTF2IMPORTER_H_INC