#ifndef PKMNLIB_FILEBYTECODESTREAM_HPP
#define PKMNLIB_FILEBYTECODESTREAM_HPP
#include <angelscript.h>
#include <cstdio>
#include "IPkmnBinaryStream.hpp"

class FileByteCodeStream : public IPkmnBinaryStream {
private:
    FILE* non_null _file;
    size_t _readPosition = 0;

public:
    explicit FileByteCodeStream(FILE* non_null file, size_t bound) : IPkmnBinaryStream(bound), _file(file) {}

    int Write(const void* non_null ptr, asUINT size) override {
        if (size == 0)
            return 0;
        return fwrite(ptr, size, 1, _file);
    }
    int Read(void* non_null ptr, asUINT size) override {
        if (size == 0)
            return 0;
        if (_readPosition + size >= _angelScriptBound) {
            size = _angelScriptBound - _readPosition;
        }
        auto diff = fread(ptr, size, 1, _file);
        _readPosition += diff;
        return diff;
    }
};

#endif // PKMNLIB_FILEBYTECODESTREAM_HPP