/*
Open Asset Import Library (assimp)
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*/

/** @file FBXExportProperty.h
* Declares the FBX::Property helper class for fbx export.
*/
#ifndef AI_FBXEXPORTPROPERTY_H_INC
#define AI_FBXEXPORTPROPERTY_H_INC

#ifndef ASSIMP_BUILD_NO_FBX_EXPORTER

#include <assimp/types.h> // aiMatrix4x4
#include <assimp/StreamWriter.h> // StreamWriterLE

#include <string>
#include <vector>
#include <ostream>
#include <type_traits> // is_void

namespace Assimp {
namespace FBX {

/** @brief FBX::Property
 *
 *  Holds a value of any of FBX's recognized types,
 *  each represented by a particular one-character code.
 *  C : 1-byte uint8, usually 0x00 or 0x01 to represent boolean false and true
 *  Y : 2-byte int16
 *  I : 4-byte int32
 *  F : 4-byte float
 *  D : 8-byte double
 *  L : 8-byte int64
 *  i : array of int32
 *  f : array of float
 *  d : array of double
 *  l : array of int64
 *  b : array of 1-byte booleans (0x00 or 0x01)
 *  S : string (array of 1-byte char)
 *  R : raw data (array of bytes)
 */
class FBXExportProperty {
public:
    // constructors for basic types.
    // all explicit to avoid accidental typecasting
    explicit FBXExportProperty(bool v);
    // TODO: determine if there is actually a byte type,
    // or if this always means <bool>. 'C' seems to imply <char>,
    // so possibly the above was intended to represent both.
    explicit FBXExportProperty(int16_t v);
    explicit FBXExportProperty(int32_t v);
    explicit FBXExportProperty(float v);
    explicit FBXExportProperty(double v);
    explicit FBXExportProperty(int64_t v);
    // strings can either be stored as 'R' (raw) or 'S' (string) type
    explicit FBXExportProperty(const char* c, bool raw = false);
    explicit FBXExportProperty(const std::string& s, bool raw = false);
    explicit FBXExportProperty(const std::vector<uint8_t>& r);
    explicit FBXExportProperty(const std::vector<int32_t>& va);
    explicit FBXExportProperty(const std::vector<int64_t>& va);
    explicit FBXExportProperty(const std::vector<double>& va);
    explicit FBXExportProperty(const std::vector<float>& va);
    explicit FBXExportProperty(const aiMatrix4x4& vm);

    // this will catch any type not defined above,
    // so that we don't accidentally convert something we don't want.
    // for example (const char*) --> (bool)... seriously wtf C++
    template <class T>
    explicit FBXExportProperty(T v) : type('X') {
        static_assert(std::is_void<T>::value, "TRIED TO CREATE FBX PROPERTY WITH UNSUPPORTED TYPE, CHECK YOUR PROPERTY INSTANTIATION");
    } // note: no line wrap so it appears verbatim on the compiler error

    // the size of this property node in a binary file, in bytes
    size_t size();

    // write this property node as binary data to the given stream
    void DumpBinary(Assimp::StreamWriterLE& s);
    void DumpAscii(Assimp::StreamWriterLE& s, int indent = 0);
    void DumpAscii(std::ostream& s, int indent = 0);
    // note: make sure the ostream is in classic "C" locale

private:
    char type;
    std::vector<uint8_t> data;
};

} // Namespace FBX
} // Namespace Assimp

#endif // ASSIMP_BUILD_NO_FBX_EXPORTER

#endif // AI_FBXEXPORTPROPERTY_H_INC
